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Pe 1 Uninterruptible Power Systems | International Electrotechnical Commission | Electric Power System
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NEMA P E * 1 92 m 6470247 0501909 183 m
STANDARDS PUBLICATION NO.PE 1
NAVONAL ELECTRICAL MANUFACTURERSASSOClATON H 2101 L SIREET, N.W., WASHIEIGTON, D.C. 20037
22:40:46 MDT Questions or comments about this message: please call the Document
NEMA P E S 1 92 6470247 0503930 9T5
NEMA STANDARDS PUBLICATION NO. PE 1-1992
(202) 457-8400
O1992 by National Electrical Manufacturers Association
Foreword ............................................ i
purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
pe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sc0 ii
Section 1 REFERENCED STANDARDS AND DEFINITIONS
Referenced Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Section 2 U P S FUNCTIONALBLOCKSANDCONFIGURATIONS
Introduction to UPS andFunctionalBlocks . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Blocks ....................................... 9
UPSConfigurationsUsingSingle-UPSUnits ......................... 10
UPSConfigurationsUsingUPSUnitsinParallel ....................... 12
Section 3 U P S SWITCHES
Genaal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Typesof U P S Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
ApplicationofUPSPowerSwitches ............................. 17
Rated ValuesandPerformance ................................ 21
Section 4 BATTERIES
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Types ......................................... 23
Factors ...................................... 23
OptimumBattery Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
ValveRegulated Batteries ................................... 23
Maintenance ..................................... 23
BatteryChargingDischarging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
BatteryReplacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
BatteryTerminalMaintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Batteries.SpecialSafetyHandling .............................. 24
BatteryStorage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
BatteryOperationMonitoring ................................. 24
Section 5 RATEDVALUESANDPERFORMANCE OF UPS
Genaal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
ValuesandCharacteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Section 6 TESTING STANDARDS
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
UPSTests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
TestMeasuringMethodsforInputandOutput ........................ 34
Tests ..................................... 34
Section 7 RFiCTIFIER/CHARGEX TESTS
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Test ......................................... 35
VoltageAdjustment Test ................................... 35
No-Load Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
TemperatureRise Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Current-Limit Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Test ....................................... 36
VoltageRegulationTest .................................... 36
EfficiencyMeasurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
PowerFactorMeasurement .................................. 36
RippleVoltageMeasurement ................................. 36
AudibleNoiseTest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
. . ... .. ... . . .. . . 44 Section 10 INSTALLATION GeneralInformation . . . . ... .... . .... . . .. .. . .. . .. . .. ... ... . . . . . ... .. . .. . . . . .... . . . . .. .. . . .. . . . . . ... . ... .. . .. .. ... . . . . 45 Safety . . . . .. . . .. . .. . . ... ... . .. . . ...... . . . . . . .. . . .. . 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584... . . ... . .. . . . . . . . . .. . . 42 Output Undervoltage Transient . . . .``. 42 SERVICE CONDITIONS General .. ... .. . .. .. .. . 39 CheckingofAuxiliaryDevices . . .. .. . . . . . . . .. .```. 43 UnusualElectricalConditions . . . . ..`. . . . ...... .. .. . . . .. .. ... . . . . . . . .. . . . . .. . . . . . . . . . .. 39 RatedContinuous-LoadandLight-LoadTests .. . .. ..... . . . . . . . . .. . . . .. .. ... .. . . ... . . . . . .. . .. . . . . .... . .. .. . . . . . . . .. . . . .. .. . . . . . .`. . . . . . . .. .. . . ... . . . . . . . . . . 46 Maintenance Plan .. . 47 Operation . . . . . . . .. .. .... . . . . ... . . . . . .. . . .. . . ... . . ... . . . . . . .... . . . . . . . . 41 Output VoltageUnbalanceTest . .. . .. . . . . .. . 51 UserData .. . 46 UnusualServiceConditions . . . . . . .. . .. ... .. . . . .. . .... . . . .... . . . .. . . . .. ... . . . . . .. . . . 46 Section 11 SAFETY DesignStandard . . . . .. ... . . . .. . . . . . . . .. ... . . . .. . . . . 51 Data . . .. .. . .. .. .. . ... . .. . . .. . . ... . .. . . . .. . . . . .. . . . .. . . . . 42 Output OvervoltageTransient . . . . User=. . . 37 INWRTEiR TESTS General . . . ... . . . . 48 Inspection ..`. . . . ~~ . 45 Installation . . . . .. .. .. ... . .. . . .. . . . . ..... . . .. . . . . . . . . .. . . National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100. . .... . . Safety 49 Maintenance Instructions .. 45 Planning . . . .. . SurgeWithstandCapabilityTest . .. . ..... . . .. . . . . . . . . . ... ...... . . . .. 46 U P S InstallationDiagrams . 42 Dielectric Test ..... . . . . ... . . ... . . .. . .. 47 Safe Construction .. . .. . . . .. . . . ... .. . .. .. . . ... .. . ... .. .. .. . 43 UsualService Conditions . . . .. .... . . .. . . . . . . . . .... . .. .. . .. . . . . . ... .. . . ... . . .. . . . . . . . .. . ... . . . . ..`.. . .. . . . . ... . . .. . . . . . . . . . . . . .. .... . ... .... . . . . . .. .. . . . .. . . . . ... .... . . . . . .`--- Supplier 53 COPYRIGHT 2003.. . .... . ... ...... . .. . . .... . . . . .. .. . . . . . .. . . 41 Output Short-Circuit-CurrentTest . .. 40 AudibleNoiseTest . . . . . .... . . . .. . . .. . Site 45 Initial U P S Inspection . . . . . ... ... . . . . . . . . . . . ... . . . . . . .. . . . . . . . . ... . .. . . .. . .-`-`. .. . . . . . ... . . .. . . . .. . . . . ..... . .. . .. . . ... . .. . . . . .````. . .. . . .. . . . . . .... .. . . . . . .. . . ... . . . . . . . . . ... . . . . . .. 49 APPENDIX A APPLICATIONDATAFORM General .. .. .. . . ... .. . 39 Temperature RiseTest . . . . . .. . .. ... 46 Batteries . . . . . . . . . . . . 41 Frequency Modulation . . . . . .. 46 Location . . .. . .. . . .. . . . . . .. .. . . .. .. .. .. . 43 UnusualEnvironmentalConditions . .. . . . Battery 46 On-SiteInstallationandVerification . . . . . .`. . ... .. . .. . . ... .. . .. .. . . . .. .. . .. ... .. ... .. .. .. . . . .. . . . . .. . . . . . . .. --`... . . .. ..... . . . . . . . .....``. . . . .. . . . . . .
. and Power Systems Support Committee of the Industrial Power Systems Department. 20037 COPYRIGHT 2003. The standards cover both installation and manufacturing criteria obtained from manufacturers and users.````. The effortsof the members of the Unintermptible Power System Committee was heightened because of the valuable and appreciated user inputthe from Government representatives from AT&T.`.``. provisions for construction. ".. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100.. ~ NEMA PE*3 7 2 W b470247 0503733 604 W PE 1-1992 Page i Foreword The standardsin this publication represent the technical judgement of the Power Electronics Section with respect to the performance and construction of Unintermptible Power Systems (UPS).`. User=.. has worked (and continuesto work) closely with such organizations as the American Society for Testing and Materials (AS"). -.`.`--- followed by their appropriate classification and the date. and others willbe consulted for any changes necessary to keep them up todate with advancing technology. and safety considerations of unintermptible power systems( U P S ) .. The Power Electronics Section of NEMA. and Departmentof the Navy. Proposed or recommended revisions should be submitted to: Vice President. PE 1-1992 revises and reaffirms the content of NEMA Standards Publication for U P S No. Washington Navy Yard. Those which have been revised are --`. The unchanged NEMA Standards and Authorized Engineering Information appear in this publication with the original PE 1-1983 date. a testing schedule. ~ ~..``. As future major revisions to this publication are proposed. ratings.`. through its members. Suite 300 Washington. Social Security Administration. ..C... the Instituteof Electrical and Electronics Engineers (IEEE). 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584. appropriate individuals and organi- zations will be canvassed. . The purpose of this publication is to provide manufacturers and users with definitions. research tests. Underwriters Laboratories Inc. specification outline. records of manufacturers and field experience. User needs have been considered throughout the development and revision of these standards.W. PE 1-1983. N. Engineering Department National Electrical Manufacturers Association 2101 L Street.. Publication No..-`-`.```. These standards are based upon sound engineering principles. D. Appropriate gov- ernment agencies.`.
--`.```.````.. The primary function of the U P S covered by this technical standard is to provide quality and continuity of an alternating current power source.-`-`... .- NEMA PE*1 9 2 m 6470247 0501914 5YO PE 1-1992 Page ii Purpose This NEMA Standards Publication is adopted in the public interestto provide a standard for performance and construction and to assist buyers in selecting and obtaining the proper product for their particular needs.`.`.``. Referenced Standards scope This Standards Publication covers unintermptible power systems (UPS)as it appliesto semicon- ductor acto ac converter systems with a dedicated dc electrical energy storage capability.``.`--- COPYRIGHT 2003. The U P S standard is intended to define a complete Unintemptible Power System regarding its overall performance and safety and not individual subsystem functional units. This U P S standard can be applied UtoP Sathat is comprised of semiconductor power converters and rotary power converters (motor-generated sets)....1. ~.`. however.. no technical or application information regarding rotary power converters is included in this publication. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584. ~ .* * See 1.. Recommended safe practices intended to prevent personal injury and property damage arising out of the installation and use of this equipment are covered more completely in other related safety publications suchas the Manufacturers Instructions and the National Electrical Code..`.`. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100. User=.
-`-`.``. NY 10036 Power System ANSI S1.. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100.`--- ANSI/IEEE 450-1987 Practicefor Maintenance...````. Testing. .1 REFERENCEDSTANDARDS and are available from the organizations shown below..`.1983 Specificationfor Sound Level Meters ANSI/IEEE 32-1972 Neutral Grounding Devices..45-1987 Guide on Surge Testing for Equipment Connected to Low-Voltage AC Power Circuits ANSI/C84.1-1989 Voltage Ratingsfor Electric Power Systems and Equipment (60Hz) ANSI/C92.``.`. American National Standards Institute (ANSI) 11 West 42nd Street New York. Terminology and Test Procedure A N S I E E C62. and Replacement of Large Lead Stor- age Batteriesfor Generating Stations and Substations ANSI/IEEE484-1987 Practice for Installation Design andInstallation of Large Lead Storage Batteries for Generating Stations and Substations ANSI/IEEE 485-1983 Batteries. It is The following publications are for information purposes suggested when ordering those documents that the latest edition be requested. and Definitions IEC 364-2 (1970) Part 2: Fundamental Principles IEC 364-3 (1977) Part 3: Assessment of General Characteristics IEC 364-4 Part 4: Protection for Safety IEC 364-5 Part 5: Selection and Erection of Electrical Equipment IEC 364-61 (1986) Part 6: Ver@cation. Object. Recommended Practice for Sizing Large Lead StorageSor Generating Stations and Substations International Electrotechnical Commission (IEC) (Available from ANSI) IEC 146-4(1986) Methods of SpecifVing Performance Test Requirements of UPS IEC 146-2( 1974) Semiconductor Self-Commutated Converters IEC 364 Electrical Installations of Buildings IEC 364-1 (1972) Part I : Scope.. NEMA PE*l 9 2 6470247 050L9l5 487 PE 1-1992 Page 1 UNINTERRUPTIBLE POWER SYSTEMS Section 1 REFERENCED STANDARDS AND DEFINITIONS 1.`.1-1982 Insulation Coordination ANSI/C92. Standard Requirements..Alternating-Current Electrical Systemsand Equipment Operating at Voltages Above 230 Kilovolts Nominal-Preferred Voltage Ratings ANSI/IEEE 100-1988 Dictionary of Electrical and Electronic Terms Storage Batteries --`.```.`.2-1987 Power Systems .`. Chapter61:Initial Verìjîcation IEC 364-7 Part 7:Requirements for Special Installations or Locations COPYRIGHT 2003..31-1980@1986) Precision Methods for the Determination of Sound Power ofBroad Level Band Noise Sources in Reverberation Rooms ANSI S1.4. User=.36-1979 Survey Methodfor the Determination of (R1985)Sound Power ANSI S 1.41-1980 Guide for Surge Voltages in Low-Voltage AC Power Circuits (Formerly designated IEEE Std 587-1 980) ANSI/IEEE C62..
``... National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100.1989 Deadpont Distribution Switchboards NEMAPB 2. NY 10017 IEEE428.V (DIN) (Available from ANSI) DIN VDE0871m.`. Operation andMaintename of Panelboards Rated600 Volts orLess NEMA PB2..for In- dustrial.1-1991 General Instructions for Proper Installation. .. Scientific and Medical (ISM) Radio Frequency Equipment Institute of Electrical and Electronics Engineers (IEEE) 345 East 47th Street New York.````. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584. Suite 300 Washington.78-1978 Limits ofRadi0 Interferencefrom Radio-FrequencyApparatusandlnstal- lations DIN VDE 0871 part 1-1985 Radio Interference Suppressionof Radio Frequency Equipment. D.1987 Emergency and Standby Power Systems for Industrial and Commercial Applications IEEE493-1980 Recommended Practice forDesign ofReliable Industrial and Commercial Power Systems IEEE 519-1981 Guidefor Harmonic ControlandReactive Compensation of Static Power Converters IEEE 928-1986 Terrestrial Photovoltaic Power Systems IEEE944-1986 Recommended Practice for the Applicationand Testingof Uninterruptible Power Suppliesfor Power Generating Stations National Electrical Manufacturers Association 2101 L Street.. Scientific and Medical(ISM) and Similar Purposes DIN VDE 0871 part 1-1982 Limits and Methods of Measurement of Radio Interference Charac- teristics of Indwtrial..1-1991 Safety Color Code --`.-`-`.```.1981 Dejìnitions and Requirementsfor Thyristor AC Power Controllers IEEE 446..`. 20037 NEMA PE 7-1985 (R 1992) Communication Type Battery Chargers NEMA IB 4-1987 Determination of Amperehour and Watthour Capacityof Lead-Acid In- dustrial Storage Batteriesfor Stationary Service NEMA IB 5-1987 Life Testing oflead-Acid Industrial Storage Batteries (WithFree Electro- lyte)for Stationary Service NEMA MG 1-1987 Motors and Generators Panelboards and Distribution Switchboards NEMAPB 1-1990 Panelboards NEMAPB 1. Operation and Maintenance of Deadpont Distribution Switchboards Rated 600 Volts or Less ANSI 2535. User=.1-1991 General Instructionsfor Proper Handling.`... N.W. Installation.`--- COPYRIGHT 2003.`.``..`.C. NEMA P E S 1 92 m 6470247 05019Lb 313 m PE 1-1992 Page 2 IEC 664 (1980) Insulation Coordination Within Low-Voltage Systems Including Clear- ances and Creepage Distances for Equipment E C 664A (1981) First Supplement IEC 555-2-1988 Disturbances in Supply Systems CausedBy Household Appliances and Similar Electrical Equipment Part 2: Harmonics IEC 950 Data Processing Equipment Deutsches Institutfor Normung e.
5-1991 Accident Prevention TagsVor Temporary Hazards) National Fire Protection Association (NFPA) Publication Sales Department Batterymarch Park Quincy.. Room 7122 Washington. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584.2-1991 Environmental and Facility Safety Sign Future Standard ANSI 2535.``..``. .4-1991 Product Safety Signs and Labels ANSI 2535...```.Street.`. in which the U P S operates..````..`--- (Federal Information Processing Standards Publication) 1. direct-current produces root-mean-square when electrical that voltage. 20554 47CFR-Part 15. N. Subpart B-RFI/EMZ-October.`.`. User=. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100. VA 22161 FIPS PUB 94-1983 Guideline Electrical onPower for ADP Installations --`. energy froma chemical reaction and can be recharged by COPYRIGHT 2003. Department of Commerce/ National Bureau of Standards Springfield. response to the occurrence of predetermined conditions..2 DEFINITIONS IEEEin Definitions marked with an asterisk(*) are identical to those contained Standard the Dictionary of Electrical and Electronics Terms. APPARENT POWER" BAlTERY Theproductoftheroot-mean-squarecurrentandtheArechargeableelectrochemicalenergystoragedevice discharged.-`-`. AMBIENT TEMPERATURE AUTOMATIC CONTROL The temperature of the medium such as air or liquid in Control of an operation without human intervention. 1989 National Technical Information Service U.W.C.`.`.ANSI/IEEE Std 100-1988. IL 60062 ANSI UL 67-1988 Panel Boards ANSI/UL 840-1990 Insulation Coordination Including Clearances and Creepage Distances for Electrical Equipment ANSI/UL 891-1984 Dead-Front Switchboards ANSI/UL 924-1983 Emergency Lighting and Power Equipment ANSI/UL 1012-1988 Power Supplies Federal Communications Commission 2025 M. PE 1-1992 Page 3 ANSI 2535..3-1991 Criteriafor Safety Symbols ANSI 2535. D. MA 02269 Handbook-1990 National Electrical Code Handbook A N S I M A 70-1990 National Electrical Code A N S I M A 110-1988 OSHA-29CFR1910 Emergency and Standby Power Systems Underwriters Laboratories Inc.S. 333 Pfingsten Road Northbrook..NEMA has obtained reprint permission from IEEE.
ELECTRONIC POWER CONVERTER An electronic device for changing power in one of the COMMUTATION following ways: The transfer of current between various paths of a circuit. ENERGY RESTORE TIME CURRENT LIMIT(control)* The time required by the energy storage means UPS of the The function that maintains a current within its pre. BATTERY. The specified voltage or potential gradient below which a dielectric material will continue to resist electrical cur- --`.```.`--- BATTERY END VOLTAGE rent flow. User=. UPS.DC LINK rect-current power for the purpose of charging a battery. EFFICIENCY* BYPASS The ratioof output power to input power expressed in A power path around one or more functional units of apercent. COPYRIGHT 2003. DEVIATION cal energy. or both.`..`. after providing rated stored energy time.``.-`-`. DIELECTRIC WITHSTAND STRENGTH phere.. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584.DIELECTRIC TESTS* trolysis is controlled by areclosingpressure-sensitive Tests which consist the of application of a voltage higher valve.`.`. The direct-current power interconnection between rec- tifier or rectifier/charger and inverter functionalunits. Any departurefromadesiredorexpectedvalueor pattern. PE 1-1992 Page 4 reversing the chemical reaction with direct-current electri. AC/DC power converters DC/AC power converters CONTINUITY OF LOAD POWER AC/AC power converters The availability of load power within the limits specified DC/DC power converters for the load.`..``... DC ENERGY STORAGE SYSTEM BURKIN" A system consisting of single or multiple devices (typi- The operation ofunits or systems priorto their ultimate cally batteries) designed to provide the required stored application intended to stabilize their characteristics and energy time. connect power circuits. . A battery in whichtheproductsofelectrolysisand evaporation are allowed to escape freely to the atmos. the ratio The interval of time between the initiation of the opening of the real power of the fundamental wave to the apparent of a U P S switch and the instant when current ceases to power flow of the fundamental wave. to identify early failures. VENTED spacing. BATTERY CHARGER A device for changing alternating-current power to di.. VALVE-REGULATED A battery in which the venting of the products of elec... than the rated voltage for a specified time to verify the dielectric withstand strength of insulation materials and BATTERY. maximum) valueto its root-mean-square value. Alternating-current power supplied from an ac input to the ac output via a bypass. to be charged to provide a second rated stored energy time scribed value. in the power circuit.. The lowest battery voltage at which U P Samay operate. DISPLACEMENT POWER FACTOR BREAK-TIME The displacement component of power factor. ELECTRONIC POWER SWITCH CREST FACTOR(periodic functional)* An electronic device which can be controlledto inter- The CREST FACTOR is the ratio of its crest (peak.````. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100. ELECTROMAGNETIC INTERFERENCE (EMI) BYPASS POWER Unwanted radiatedor conducted electric noise.
`.```.`. User=. A load whose voltage and current relationship is not lini2. LOAD SHARING FREQUENCY DEVIATION The simultaneous supplying of power to a loadh m two The cyclic or random variation of instantanmus frequency or more sources connected in parallel.. combination withat least one electronic controllable valve device. . LOAD TRANSFER TIME The time required for the transfer of the load from one HARMONIC DISTORTION power sourceto another. A current higher thanits steady state value drawn by a --`.`. about a mean frequency during steady-state electrical op- erating conditions.. LINE COMMUTATED ELECTRONIC SWITCH OUTPUT VOLTAGE Electronic switch where the commutation is by provided The rms voltage (unless otherwise specified for a par- the reversalof current in theAC power line. the U P S . COPYRIGHT 2003. MANUAL CONTROL Control of an operation by human intervention.. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100. Distortioncharacterized bythe appearance of harmonics in addition to the fundamental component.. INVERTER OUTPUT POWER An electronic converterused to convert direct current to The power expressed in watts delivered to the load by alternating current.. OUTPUT VOLTAGE MODULATION The cyclic variation of instantaneous voltage about a mean voltage during steadystate operation.-`-`... ticular load) at the output terminals referred to as naturally commutated electronic switch. Sometimes of the U P S .`--- device when initially energizedor activated.`.. or both. INPUT POWER The ac power expressed in watts supplied to the ac NOMINAL input VALUE terminals of the U P S . INTERRUPTING TIME The intervalof time during which the output voltage of OUTPUT IMPEDANCE a U P S is outside of specified limits during operation or The impedance presented by theU P S output terminals control of the UPS.``. to a load.X. INPUT AC Electric power in the form of alternating current (ac) NONLINEAR LOAD supplied to the U P S and bypass. FORCED COMMUTATED ELECTRONIC SWITCH LOAD Electronic switch where the commutation is by provided A device or devices which receives power from the ac elecmnic switch or by another output of theU P S .`. voltage and current.``.. MAKE-TIME The inmal of time between the initiationthe ofclosing of HYBRID UPS POWER SWITCH a U P S switch and the instant when the current begins to flow U P S power switch with mechanical separable contacts in in the power circuit. OUTPUT CURRENT The rms current from the U P S output terminals.````. OPERATION The transfer of UPS a switch from the on to the off state INRUSH (opening operation) or vice versa (closing operation). PE 1-1992 Page 5 FAULT CURRENT AVAILABILITY LINEAR LOAD in a circuitas a resultof a low The current that can flow A load which presents a linear relationship between impedance fault. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584. auxiliary circuitry within the electronic switch. A common value used to identify a parameter but not necessarily the actual or measured value. INPUT SOURCE IMPEDANCE Theimpedanceofthesourceatthein~tte~inalsoftheUPS.
or on parts or which are synchronized. Power that does work (expressed in watts). The instantaneous addition or removal of electrical loads attains a second nominal state and ultimately returns to thea power source. for a specified of rated load power (under specified service conditions parameter.``. The instan- SYNCHRONIZATION taneous product of voltage and current. Thepowerintendedtoreplaceprimepowerforthe times by the user'sown generation. PULSE STEP LOAD A quantity which departs from a fist nominal value. impedance load..-`-`. Transfer Time --`. duration of the prime power outage. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584.`. PE 1-1992 Page 6 PHASE ANGLE materials as required to verify during production that the The angle (usually expressed in electrical degrees)be. STORED ENERGY TIME RATING The minimum time that the U P S will provide continuity A value.. tween reference points on one or more ac wave forms. PRIME POWER STANDBY POWER The power normally continuously available which is usually supplied by electrical utility company but some. Adevice for converting alternatingcurrent to direct-cur- TOTAL HARMONIC DISTORTION rent.`.) when the stabilized value of the parameter returns to and TOLERANCE* stays within the steady state tolerance.. to first nominal state..`. starting with a fully charged energy storage means) in the absence of ac input until the energy storage means reaches REAL POWER its specified minimum discharge voltage... The ratio of the root-mean-square (rms) value of all the RECTIFIEWCHARGER* harmonics to the root-mean-square value of the fundamen- A U P S component that changes ac current to dc power tal usually expressed in percent. Transfer Tests made for quality control by the manufacturer on Transfer of the load power between two sources every device or representative samples.``.`. A means by which to achieve the state of synchronism. PREFERRED SOURCE SOLID STATE SWTCH The ac power source that delivers power to the load A device that can start or interrupt current flow in an under normal conditions use of gated (controlled) semicon- electrical circuit by the ductor elements rather than physically moving contacts. The rateof change of frequency inHz per second. The total permissible variation of a quantity from a RECTIFIER" designated value. assigned by a manufacturer.. POWER FACTOR SLEW RATE (FREQUENCY) The ratio of the total real power to the apparent power.product meets the design specifications..`--- COPYRIGHT 2003.. RECOVERY TIME (The state where ac systems operate at the Same frequency The time interval betweena change ina parameter and with a specified phase-angle displacement. An intentional repetition of a given function"usual1y Asynchronous a. Transfer intended to improve reliability. Transfer of the load power between two power sources whichare not synchronized. SHORT-CIRCUIT OUTPUT CURRENT POWER" Thecurrentwhichflowsfromthe U P S intoa zero The time rate of transferring or transforming energy. Used to denote the switchingof a load power from one REDUNDANT power sourceto another.````.`. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100. ROUTINE TEST Synchronous b. . to feed either an inverter or a battery or both. Usually TRANSFER implies that the rectifier output voltage is regulated. User=. c.```.
National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100.. PE 1-1992 Page 7 B The interval of time between the initiation of transfer and the instant the load power is com- specified degreeof continuity of load powera specified stored energy time upon ac input failure. of a quantity from its mean or The change in the value typical value. which ultimately disappears.```.``. by the U P S from The initial controlled power increase the ac input. from a U P S . UNINTERRUPTIBLE POWER SYSTEM (UPS) A U P S is a device which provides quality and continuity ofanacpowersource. TYPE TESF The performancetests taken on the first machine of each WALK-IN type of design. TRANSIENT VARIATION A momentary variation.`..``...`. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584.`..-`-`. isolate. User=.````.`--- B B COPYRIGHT 2003. A switch usedto m s f e r a load from one power source a U P S or interrupt. ....`. or transfer power flow within to another.`.All U P S shallmaintainsome --`.. for pletely transferred from one sourceto another. UPS SWITCH TRANSFER SWITCH A switch (electronic or mechanical) used to connect.
-`-`...`... .``.`--- COPYRIGHT 2003.`.`. User=..`. ~ ~~ NEMA PE*L 92 6470247 0503922 bL7 PE 1-1992 Page 8 --`.````.```.`. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100.``.. ....
may be needed to supply depict this functional block throughout these standards. or other primary source of or protected load is predominately some form of data power is not available. then the functional building block is termed a is usually the local electric utility.2Energy Storage Means The energy storage means is the functional building --`. such as a capacitor.which battery. although it may be other equipment group of batteries. which willbe used to depict this described in the following sections.1 RectifierlCharger An unintermptible power system (UPS). from the battery or rectifier. If the converter usedis quality of power to a user’s equipment inthe event of a only to provide energy to the energy storage means.-`-`.by If the converter is used only to provide powerto converting some form of stored energy to supply topower an inverter.3 Inverter monly referredto as stored energy time.of storing dc energy.2. . If the the user’s equipment for a specified period of time when converter is used for both functions. frequency than the utility power. This time interval is com. The inverter be mayneeded to manufacturers are not defined in these of standard isolation provide power to a load which operates at a different switches.`.. or partial or total failure of the normal sourceofpower.. or protected load. is a solid state electronic power system. typically referred to critical as the for this functional block.2. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100.`. The stored energy to support this load.`.``.`.`. The critical vides energy when the utility. then the block is termed a rectifier. It most commonly is a battery. but may be some other device capable such as lighting.2. PE 1-i 992 Page 9 D Section 2 UPS FUNCTIONAL BLOCKS AND CONFIGURATIONS 2. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584... B power to the equipment for a specified time which be may momentary or formany hours. Figure 2-1 Figure 2-2 B RECTIFIER/CHARGER BATTERY COPYRIGHT 2003. pumps or communica.. may consist of one piece of equipment or may be a room or building full of equipment. Figure 2. Figure 2-2 illus- tion equipment.. then the block is the utility is no longer available or acceptable.2.````. which will be used to usually in the form of batteries. functional block throughout these standards. It is the 2.1 illustrates the symbol The user’s equipment.. as described in these standards. trates the symbol for this battery. User=.2 FUNCTIONAL BLOCKS BLOCKS 2. or backup time. This is accomplishedcharger. instrumentation. orit may be designed to provide less than one hundred watts to several megawatts. termed a rectifier/charger.```.. The inverter is an electronic power converter which A variety of WSes have been developed to meet the changes dc power into ac power. The rectifier/charger is an electronic power converter Its primary function is to provide specified continuity and that changes ac power to dc power.1INTRODUCTIONTOUPSANDFUNCTIONAL 2..`--- equipment that the user has determined needs be to pro- vided with power which has better continuity and quality block that allows the U P S to be uninterruptible and pro- than that power whichis normally available. It may be designed to user’s requirements for continuity and quality of power to continuously provide power to the critical load from either different types of loads over a wide range of power. or processing equipment. The power to the critical load only when the utility is not design concepts and circuit technologies used by UPS providing adequate power.``. Figure 2-3 illustrates the These functional building blocks in these standards are symbol for an inverter.
The single conversion converter alsoisreferred Figure 2-5 --`.`. The single conversion converter is ating modes may be selected to provide for expanding defined in these standards. higher capacity of the utility to start loads with high inrush tery whenever ac power is available at the input.`.. as described in Section2.```. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100. and describes their U P S switches are functional blocks that are used to key features. or momentary overloads. facilitate the selectionof a U P S suitable for the applica- nate sourceof power.-`-`. to meet the requirements of the application. or connect the load to the ac input. tion.`.. to take advantage of atb-ib- Figure 2-4.recti- fierkharger-inverter type of U P S first converts input ac power to dc power and then back to ac power.. NEMA PE83 92 6470247 0503924 49T m PE 1-1992 Page 10 2. Group 3 S i n g l e Conversion Converter Configurations without bypass. This section illustrates a few of the more 2.`--- to as a “line interactive converter” sincethe ac input is UPS SWITCH directly converted to ac output power without first con- verting to dc power. and its symbol is illustrated in loads. Multiples of these single-UPS units can be com- bined to provide increased capacity.5 UPSSwitches commonly used U P S configurations. Figure 2-4 SINGLE CONVERSION CONVERTER COPYRIGHT 2003. or redundancy.. The recti- fierkharger-inverter type of U P S is a double conversion converter. When currents.. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584.2 may combined into many different configurations.``. to provide redundancy. The U P S To understand the differentU P S configurations and to switch maybe configured to connect the loadto an alter.2.Section3describes various U P S switch configurations.3 UPSCONFIGURATIONSUSINGSINGLE- I . andmay be performed to allow the typically while simultaneously maintaining the charge on the bat.``. Group -ingle Conversion Converter Configurations with bypass. 2. Group2-Rectifier-InverterConfigurationswithby- pass. the con- verter supplies ac power to the load using energy from the battery.2. User=.`.whereas. utes of different U P S technology. Figure2-5 illustrates the symbol for this functional block..````. or to meet special load requirements.. This bypassing function may The single conversion converter is an electronic power be performed manually or automatically in the event that converter that supplies controlled ac power to the load the U P S fails.`. single UPSes are divided into four major groups listed below. The significant difference between the single con- version type of U P S is that the single conversion converter converts the input ac power directly to output ac power withoutfirstconvertingtodcpower. / UPS UNITS be The functional blocks described in Section 2. connect or disconnect various parts of Uthe P S . ..4.4 SingleConversionConverter bypassing internal functions. Combinationsand oper- Figure 2-3 INVERTER specified ac power is not availableat the input.. Group 1-Rectifier-Inverter Configurations without by- pass.
transformers and syn- chronizing circuitry maybe utilized. phase and voltageas supplied to the load by the inverter. and the bypass power is utilized only T temporarily for specific purposes... but do not have bypass capability. This mode is commonly referred to as “on-line” operation.. RECTIFIER INVERTER UPS WITHOUT BYPASS The functional block diagram for this type of U P S is Group 2 includes configurations that consistof a recti. In order for this type of system to function. Using the same functional blocks. Figure 2-7 tional block diagram for this type of U P S is shown in SIMPLIFIED SYMBOL RECTIFIER INVERTER Figure 2-6..````. the With Bypass bypass power must be at the same nominal frequency... In one mode. as in Group 1. This bypass switch allows power tobe supplied to the load directly fromthe AC AC AC INPUT 0 UPS . switch used as a bypass is included.`. power is normally supplied to the load via the bypass switch and the inverter is utilized whenever the bypass input poweris unsuitable to power the load.`.. this type of U P S can supply an output frequency and voltage thatis independent of theac input. this type UofP S can be designed to operate in one of two different modes. power is normally supplied to the load via the O > rectifier-inverter.and aUPS fier/charger.1Group l-Rectifier-Inverter Configurations. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584.``. A simplifiedsymbolthatisfunctionally utility inputor from an alternate power source in the event equivalent is shown in Figure2-7.``. inverter.3. inrushes.. shown in Figure 2-8. Without Bypass Group 1 includes configurations that consistof a recti- fier/charger. v >OUTPUT 1 SW Figure 2-8 RECTIFIER INVERTER UPS WITH BYPASS --`. To service the U P S e s with no bypass capability.3.```. To accomplish this compatibility.. This mode of operation is commonly referredto as “off-line” operation. or to supply load 2. NEMA PE*3 7624 7 0 2 4075 0 3 7 2 5 326 PE 1-1992 Page 11 2. The func. .`.`. or for maintenance..Withno bypass.-`-`.`--- COPYRIGHT 2003. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100. UPSes in this group are suitable for frequency converters.2Group 2-Rectifier-Inverter Configurations. The bypass input may also be supplied by anotherUPS unit. that the U P S fails. power to the critical -V=A- loadwouldgenerallyhave to be interrupted. and battery. inverter. or as part of a larger system that consists of multiple u n i t s with overall bypass capability.`. User=. In the second mode. and battery. to provide power of desired continuity and quality if Figure 2-6 the inverter of thefîîst U P S unit fails.
3. capacity loads.4. withoutbypass is shown in Figure2-4.” are capable of supplying the load if one single-UPS unit fails or is disconnected from the system. The battery inputs may be connected to a single battery. NEMA P E S 3 7 2 = 6470247 0503726 262 = PE 1-1992 Page 12 2.” The other reason is to supply continuity of with their ac outputs connected to a common point. without bypass. thus a degree of redundancy one single-UPS unit of configuration 2.`. with Bypass (A-D). parallel Ups Configurations. Ina single conversion converter configu-in parallel to supply higher capacity loads.. User=. and often additional UPS to function.4 UPSCONFIGURATIONSUSINGUPSUNITS equivalent to Figure 2-1qA-D). Transformers or other regulating maintenance while the remainder of the systemis supply- devices may be used to match the input voltage to the ing the load. without Bypass units may be supplied with bypass capabilities. without bypass may be designed so that power is 2. Each single-UPS AC Figure 2-9 SINGLE CONVERSION CONVERTER UPSWITH BYPASS COPYRIGHT 2003.2. Transformersmay be used to matchtheinput configuration.. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584.3. required output.```. .3....one or more single-UPS unit rectifier/charger of Figure ity.4Group M i n g l e ConversionConverter Examples of this configuration are shown in Figure 2-10 Configurations. without bypasstypically used for larger systems. Parallel U P S e s are single conversion converter configuration. IN PARALLEL There are two basic reasons to parallel U P S units.-`-`. The parallel ration.4. This func-backup. In parallel systems that have bypass capability. For voltage to the required output voltage..`.4 and includes a battery. Group4 includes configurations that consist of the single Aparallel-for-capacity configuration may alsoconsist of conversion converter with an independent bypass capabil. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100. The single conversion converter configu- ration.ConversionConverter As with single-UPS unit configurations. The functional blockinverters of Figure 2-3 placed in parallelto supply higher diagram for this UPSis shown in Figure2-9.`. the inverter function may operate combination ofU P S units is considered a single U P S and at its full rating or at a fraction including zero of the UPS the ac outputs ofall the units are connected to a common rating during normal operation.`. 2. or they Group 3 includes configurations that consistof the single may be operated as frequency converters with battery conversion converter without bypass capability. the tional block is described in2..``. The resulting combination is treated as one single-UPSunitandisconsideredto be functionally 2.3.``.`--- capacity. this is defined as “parallel for sists of more than one single-UPS unit placed in parallel --`. single-UPS unit is designed such that the remaining units this is definedas “parallel for redundancy.````.. bypass ftequency and phase has to be the sameas the UPS The functional symbol for single conversion converter output.3 Group-ingle.`. the nominal output frequency has to be the switches are provided to isolate portions of the system for same as the utility input.1 Parallel UPS forCapacity still supplied to the load from the utility even though the Parallel-for-capacity configuration consists of morethan inverter function has failed. point. or the individual units may have separate batteries. Each power if one or more of the UPS units ina system fails. Group4 is distinct from the systems in group 3 in that 2-1. placed may be provided.. One 2. connected with an unequal number of one or more it has independent bypass capability.2 Parallel UPS for Redundancy is to supply more powerthan a single-UPS configuration A parallelLfor-redundancyconfigurationusuallycon- is capable of supplying.1 or 2.3.
.`. Inputsl .-`-`.. Redundant of Figure 2-3 placed in parallel.``..``.```.`. or inverter fails COPYRIGHT 2003. A parallel-for-redundancy configuration may also con.. .`. and 3 Figure 2-1. that unit can not interfere with the other has to havea disconnect function or means such that if any unit or units in maintaining the specified continuity of one load unit fails. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100.11. Each functional unit if one unit fails. 2.`--- power. example of this configuration is shown in Figure 2-11. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584.`. The functional blocks areinput power may be provided to the UPS byseparate utility designedsuchthattheremainingunits are capableof sources ora alternate generator... AC INPUT 0 1 T m - AC AC OUTPUT INPUT 0 - 2 T I AC INPUT 0 - 3 T Figure 2-1OA PARALLEL UPS FOR CAPACITY unit has to have a disconnect function or means such that or is disconnected from the system.An block diagram Figure2.. In addition.````. An example of this configuration is shownin the in maintaining the specified continuity of load power..`.. an added level of redundancy maybe pro- sist of more than one single-UPS unit rectifier/charger of vided by supplyinga bypass capability. supplying the load if one rectifier/charger. User=. that unit cannot interfere with the other units --`.connected with an unequal number of inverters of Figure 2-11 may be the same or different.
```... NEMA P E * 1 72 W 6470247 0501728 035 PE 1-1992 Page 14 AC INPUT 1 AC AC INPUT "+ OUTPUT 2 --`.``. .`. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584.````...-`-`. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100.`.`--- AC INPUT 3 - Figure 2-108 PARALLEL UPSFOR CAPACITY COPYRIGHT 2003.`.. User=.``.....`.`.
`.`--- Figure 2-IOD D PARALLEL UPS FOR CAPACITY COPYRIGHT 2003..``. I NEMA.. .```.`. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584. .~. PE*3 72 b4702L17 0503727 T 7 3 PE 1-1992 Page 15 D AC T I- AC INPUT0 2 AC INPUT0 3 - Figure 2-1OC PARALLEL UPS FOR CAPACITY D AC INPUT 2 AC INPUT o rL 'L 3 % --`.-`-`.````..``... National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100..`.. ~.`. User=....`. .
. PE 1-1992 Page 16 AC INPUT0 UPS 1 sw AC INPUT0 UPS UPS 2 UNIT A SW A AC OUTPUT AC INPUT0 UPS UPS 3 UNIT B Svv B Figure 2-1 1 PARALLEL UPSFOR REDUNDANCY WITH BYPASS --`.`.-`-`..```.``. User=. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100...````..`..``..`..`--- COPYRIGHT 2003.. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584.`.`..
The manual breakers and switches described 3. interruption of power. The principal reason for using a solid-state switch instead isolating switches. Aswitch applications.2. and fuse combination maybe used in place of a thermal 3.1ManualBreakerOrSwitch configurations anda number of examples of commonly Manually operated breakers or switches are single or usedconfigurations are showninthefollowingpara- multi-pole units that are typically standard commercially graphs. The interrupters enable operating units to Contactors are solenoid operated switches provided with remain connectedto the load while a failed unit is instantly single or multiple poles anda wide range of current and isolated from the load without significant disturbance of voltage ratings.Theswitchesarecommonlyarrangedin form functional units ofa U P S and are associated with its three-pole configurationsforthree-phaseapplications. Figure 3-2 shows U P S interrupters used in a parallel redundant U P S to connect or disconnect UPS to or froma 3.`.1 shows an interrupter used to disconnect a load be outfitted with motor or solenoid operators so that the from a U P S output.2. and common applications.`. of equivalent mechanical devices is because of the supe- These switches interact with other functional units of the rior switching speed. Auxiliary features is designedto act as an impedance to power flow.3 Contactors common bus. but in practice. The information in this section is intended to provide 3. The electronic switch provides the basic manually operated breaker or switch to systems fast response time and the parallel breaker provides low- that include solidstate switches. and tie switches..2. 3. Auxiliary features such as isolated con. the U P S switches are shown in available devices suitable for a wide rangeof voltage and diagrams as separate units. 3.. application.2.4Solid-stateSwitch A U P S transfer switch consistsof a combination of two A solid-state switch.2 UPS TransferSwitches 3. The hybrid U P S switch is a combination of electronic and mechanical U P S switches. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584.a U P S switch current applications. other general purpose breakers or switches that are used If the solid-state switchtoisbe used for continuous duty for convenience or safety are not included in this discus. The following paragraphs give a brief description of commonly usedU P S switches. and automatic controls. the UPS inverter switches canbe turned on andoff by application of motor itself is usedas a U P S interrupter. User=. Depending on the design and --`. the inverter power and electrical control signals. loss continuous duty.`. sometimes referred to as a static or more U P S switches used to transfer a load from one switch because it has no moving parts. mal losses of the switching devices.. bypass switches.1 UPS Switches Used As lntempters magnetic breaker.. The devices are often provided with may be an integral part ofa U P S unit. motor operated breakers.``.1 GENERAL semiconductor power switching devices(s) in each toline The termU P S switches applies to all power switches that be switched.. which can be used effectively in U P S to maintain continuity of load power. such as conventional main distribution boards.`--- COPYRIGHT 2003.3APPLICATION OF UPS SWITCHES U P S switches areused in conjunction withU P S in many 3. is comprised ofa power source to another. PE 1-1992 Page 17 Section 3 UPS SWITCHES 3. Other switches switching power flow ainU P S system without significant or breakers. Included are interrupters. .2 Electrically Operated BreakerOrSwitch series withU P S units. In someU P S designs..3.``. U P S switches used as interrupters are on/off switches in 3. For simplicity. cooling maybe needed to dissipate the ther- sion.```.1incan Figure 3.. A most common configu- 3.2 TYPES OF UPS SWITCHES ration consists of a solid state switch in parallel with a The design and constructionU PofS switches range fiom motor operated breaker.5HybridSwitches description of types of U P S switches.2.-`-`.2. auxiliary features such as isolated contacts for remote The following paragraphs describe common U P S switch signaling and electrically operated trip capability. load transfer switches. their general char- acteristics. In that case.1 are also provided. or cally.`. battery disconnect switches. The switch is operated electroni- rectifier input switches. tacts are commonly provided. load power. applications. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100.. described in3.````..2.`.3.
Mechanical switches may be used Depending on application.Providingloadpowerduring U P S maintenance ent characteristics.`--- UPS UPS AC INPUT UNIT SWITCH Figure 3-2 PARALLEL UPS UNITS WITH INTERRUPTERS application... but the ruggedness and isolation capability of mechanical ally or automatically either with or without interruption of switches are needed. U P S transfer switches may where ruggedness and isolation are important: solid state be operated to provided synchronous or asynchronous switches maybe used where fast response and electronic transfer. U P S functional unit failure...`. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584. User=.Peakloadsexceeding U P S inverterrating of U P S switches. power to the load. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100. Eachtype has different characteristics c. continuous current and overcurrent currents or fault clearing currents) rating. Transfer switches maybe used in caseof: Since transfer switches are made up of the different types a...``.`. or intermittent duty. b.`. control are desired.`.. .Loadcurrentsurgesortransients(loadinrush such as transfer time.````. the transfer switches will exhibit differ..`. and hybrid switches may be used Figure 3-3 shows the use of a U P S transfer switch to where the fast response of solid state switches is required transfer the load between a U P S unit output and an ac input. The ac input to the U P S and the ac input to the COPYRIGHT 2003.```.-`-`..``. ~-____ . the transfer of power canbe switched manu. ~ - NEMA PE*3 92 6470247 0503932 566 PE 1-1992 Page 18 UPS UPS LOAD AC SVWTCH INPUT UNIT Figure 3-1 SINGLE-UPS UNITWITH INTERRUPTER UPS UPS AC INPUT UN IT SWITCH --`. and either continuous d. isolation of input and output.
U P S systems andU P S switches to provide total isolation this configuration is often referred to as a U P S unit with from power sources for maintenance purposes. tions given in this section is meant tobe a guide and not a e. User=. U P S tie switches may be used to connect two or more b. transferred to the altemateac input until theUPS unit is repaired. U P S interrupter is capable of performing the isolation d.. only one switch need be included in the design. 3. The switch in series with the UPS systems. 3. the alternateac U P S units or loads in such a way to provide operating input switch can be closed momentarily to aug.. one switch shouldbe opened before the other is closed. function..Sincethisconfigurationallowstheloadto be U P S isolation switches may be used as auxiliary partsof connected to the ac input whereby theU P S is bypassed. In case of momentary overload. allowing the power.3UPSUnitIsolationSwitches source.4 RATED VALUESANDPERFORMANCE For U P S switches which are not regarded as integral parts of a U P S . the transfer The U P S maintenance bypass switchis used not onlyto switch (and U P S ) may be designed so that both provide isolation but also to ensure continuity of load switches maybe on simultaneously.. closed so that the momentary overload is shared between theU P S and the alternate ac input. load power may be provided via the bypass The types of classification of switches and their applica- switch until the situation is corrected.`. . 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584. the load may be rigid classification.. nance bypass switch. In case of sustained or continuous U P S unit over.3. but when the acfails. Each power normally flowsto the load from the alter. thus causinga load power inter. 3.```.0th. U P S switch can perform multiple functions and it is not nate ac input. cal switches are used for isolationto provide safety.Figure 3-6 showsatypical use of UPS tie unit maybe opened momentarily or may remain switches. UPS SWITCH . The U P S unit canbe operated in a mode whereby U P S switches canbe combined in different ways. flexibility especially in redundant or partially redundant ment theU P S . Figure 3-5 shows an example of a U P S mainte- load to be transferred without interruption.````. Figure This configuration of the transfer switch provides a 3-4 shows a common use of isolation switches. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100.3. the UPS input necessary to cascade separate functions. the following rated values and charac- teristics may be specified by the manufacturer.``..``.3. I B I-I Figure 3-3 UPS UNIT WITH TRANSFER SWITCH transfer switch (inputs A and B) may be the same power 3. 3.5 Tie Switches ruption. For example.The rated --`.`. envise. Mechani- bypass.6 UPS Switch Functional Combinations C.`--- COPYRIGHT 2003.-`-`.`.. NEMA P E S 1 92 W bY70247 0503933 Y T 2 PE 1-1992 Page 19 I" 1 SWITCH A AC INPUT .`..3.`. Incaseof U P S unit failure. if a supplies the load. load. If mechanical switchesare used primarily to iso.4UPSMaintenance Bypass Switch late the U P S unit for maintenance.. variety of coñtrol options: a.
-`-`..`..``.``....`.`... PE 1-1992 Page 20 r i I 1 I UPS UPS AC INPUT UNIT SWITCH A J LOAD AC SWITCH INPUT B L"" Figure 3-4 UPS UNIT WITH ISOLATION SWITCHES UPS TRANSFER AC INPUT UNIT SWITCH A I IS0 \ IS0 \ I SWITCH' SWITCH AC INPUT BYPASS B SWITCH Figure 3-5 UPS UNIT WITH MAINTENANCE BYPASS SWITCH --`.`.`--- COPYRIGHT 2003..`. .. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100. User=.````. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584.```.
Voltage.`..... Off-state leakage current c. h. On-state voltage drop d. the follow.-`-`.`. switches) Rated Values(if applicable) 1.`...````.``. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100. User=. Maximumcurrent at turn-off --`.Numberofpoles/numberofphases n. Maximum permissible rate of rise of off-state e. . Break time U P S and are not specified separately.Maximumcurrent at turn-on g. Make time ing ratings can be used to identify critical requirements of k.`.`--- COPYRIGHT 2003.. Non-repetitive peak off-state voltage b..j.`. Overlap time or interrupt time(fortransfer U P S switches within an integrated UPS. PE 1-1992 Page 21 1 1 TIE 2 I I I I UPS I I I LOP- I TIE 3 Figure 3-6 UPS UNITS WITHTIE SWITCHES values of thoseU P S switches which are regardedas inte.minimumand maximum m. Repetitive peak off-state voltage a.```. Intermittent current rating voltage f.``. However. Continuous current capability O.. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584. Cooling requirements (or losses at ratedload) P. Overload current capability gral parts of UPSa are matched to the requirements of the i.
-`-`..``... PE 1-1992 Page 22 --`.```.``.`...`. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584.`.`..`... .````.. User=. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100.`--- COPYRIGHT 2003.
National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100.`.````. The rate of discharge too higha rate can reduce battery life.Ineverycase.```.-`-`. the battery provides the high. nectors and termination tightness. The discharge shall be inhibited when the battery g. k.refer to NEMA documents IB-4. and reconnect the cables. d. Excessive overcharging. absorbed electrolyte. Incorrect charging or discharging can destroy a When battery replacement is required.5 VALVE REGULATED BAlTERIES 4. The useful life of a battery may be affected by many 4. 4. IB-10.. 4. j. Terminals should be kept clean and free of chemical gen recombination systems.9 BAlTERY TERMINAL MAINTENANCE Sometimes valve regulated (sealed) batteries are re- ferred toas maintenance free batteries incorporating oxy. con- manufacturer’s recommendations.`. such as Nickel Cadmium.`.`. vent when their internal pressure becomes sufficiently (CHARGING) and when needed. The non-operating storage temperature has reachedits minimum allowable terminal voltage. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584.. Many undertaken without consulting the U P S manufacturer’s cycles of excessive discharge can drastically reduce a recommendations.. The two mostcommon fied personnel. if rated performance isto be achieved. Loose con- COPYRIGHT 2003.themanufacturer’sinstructions Other types of batteries. Since will eventually dry out the battery and shorten its useful the load side ofa U P S is ac. User=.. clean the terminals of Many types of batteries are used in U P S applications. 4.. which results in venting. and the battery Routine maintenance includes inspection of cables. the battery is the device may which of water is not necessary. . Battery systems should be designed to allow for routine 4. Refer UtoP S supplier’s data Battery maintenance should be performedbyonly quali- for specific recommendations.4 OPTIMUM BAllERY LIFE 4. corrosion. These batteries are designed to be used to store electrical energy by chemical conversion. These batteries require routine maintenanceas recom. ties shall not be mixed unless authorized by the UPS manufacturer. The specific gravity or pH of the electrolyte Batteries shall be charged according to specifications b.7 BAlTERY CHARGINGDISCHARGING factors: a.A torque level prescritml by the manufacturer.``. The depth of discharge prescribed by the manufacturer. Con- h. Extreme care is urged The most commonis the lead-acid battery and its deriva.``. IB-8. present. it shall not be battery very quickly (possibly within hours or days). --`. supplied by the battery manufacturer. Battery equalizing shall only be done as recommended by the battery manufacturer. mayshould be followed.`--- current from the battery to alternating current.. when performing this operation. and terminal cleanli- ness. stored energyto power the load (DISCHARGING). Nuts and other hardware should only be tightened to the mended in 4. The float voltage sary chargingrateandcontrolthemaximumcharging f.1 GENERAL maintenance free battery isone in which routine addition In U P S applications.8 BAlTERY REPLACEMENT The manufacturer’s specifications should be carefully followed. It may be necessary to periodically disassemble the 4... battery terminal and the battery connector. voltage can decrease battery life. or gelled deposits which may form on the interface between the electrolyte technologies.2 BAlTERY TYPES cable connections from the battery.. The number of discharge cycles sult the U P S supplier before changing to another size or i.3 BAlTERY LIFE FACTORS maintenance.Theripplecurrent The charging systemin a U P S shall provide the neces- e. be used in some applications.6 ROUTINE MAINTENANCE Formoredetailedinformation on batteries. The temperature differential between cells voltages. an inverter changes the direct life. Battery maintenance information can be constructions are valve regulated and vented.6. Batteries of different types and capaci- battery’s expected life. The rate of charge type of battery.IB-5. The temperature of the battery Excessive battery equalizing and excessive equalizing Overcharge.`. PE 1-1992 Page 23 Section 4 BATTERIES 4. High voltages may be tiva. Recharging the battery at c.
a potentially explosive A battery monitoring system may be implemented for mixture.. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100. SPECIALSAFETYHANDLING Batteries should be handled with extreme care or they 4.````. .`. storage temperature range isO to 25"C.`. Suggested teries.11 BAlTERY STORAGE insulating barrier. amounts of water andseek medical help immediately. the batteries may be charged periodically.Thegasses 4. Spilled electrolyte may destroy When lead acid batteries are be to stored for long periods clothing. each bank of batteries to obtain a history of the operation of the battery system. burn skin.andsurfacescoated unless they have been designed for all-attitude use...flushwithcopious failure of the battery.12 BATTERY OPERATIONMONITORING vented are hydrogen and oxygen.. Prior to assembly of post connec.`. Batteries normally self-discharge if left unattended for a Allpost-to-postandterminalconnectionsshould be long period of time.often an irreversible failure of the batteries. When such trickle charging is when working with batteries. Always wear eye protection. User=.I Battety Storage for Long Periods of Time may cause severe injury. and never smoke when in thevicinityofventedlead-acidbatteries.`. tion.`--- COPYRIGHT 2003. tested for proper resistance after all terminal connections Lead acid batteries should be stored in a charged condi- are completed and prior to use of the battery. Batteries shouldbe of time.```. trickle charge.``.``. impractical. it is advisableto keep them on a very low rate of serviced onlyby a qualified technician.10 BAllERIES. in accordance with the battery manufac- CAUTION-Always wear goggles and rubber gloves turer's recommendations.-`-`. otherwise sulfation of the plates occurs... with a corrosion inhibiting material that will not change state under heating or other conditions that might form an 4. or cause blindness. all surfaces should be cleaned in accordance with the Batteries shouldbe used and storedin an upright position batterymanufacturer'sdirections. ~ . ~ 6470247 0503938 T 8 4 W PE 1-1992 Page 24 nections and/or excessive tightening can cause premature Ifelectrolytegetsinto the eyes.. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584.`.or in accordance with manufacturer's recommendations. 4.. which is When working on the electrical connections to the bat. insulated tools should be used.11 .. --`.. tions. and to assist in battery evaluation.
`--- ratings are based on linear loads.5 150 5.`.`.1 PreferredkVARatings 0.o 125 standards publication. RefertoAppendixA to establish ThreePhase technical and engineering information needed UPS theby o..``. All load 10 400 --`. 450 15 500 20 625 750 Table 5-2 NOMINAL INPUTOR OUTPUT VOLTAGES (VOLTS AC) 120 208 240 277 480 575 D COPYRIGHT 2003.2.`.1 GENERAL Table 5-1 The rated values and performanceU PofS listeda herein PREFERRED UPS OUTPUT RATINGS describe theU P S operating at the usual service conditions (kVA) listedinSection 9.2.````. 15 O.35 CHARACTERISTICS 5.2 PreferredVottageRating 2. PE 1-1992 Page 25 B Section 5 OF UPS RATED VALUES AND PERFORMANCE 5. User=.60 facturers may provide ratings in between and beyond those 0. For other services conditions...5 75 Table 5-1lists the preferred output rating of U P S .`.`.5 350 Table 5-3 lists the rated values the of U P S . 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584.25 30 performance and application issues that should be consid. Manu.2 Refer to Appendix Afor a comprehensive checklist of 0.2 AND VALUES 0. 5 300 Values 5. 1. 1 10 user and supplier..75 100 listed and comply with all other requirements of this 1.. 0..5 3 200 225 those listed and comply withall other requirements of the 4 250 Standard Publication.. . see Section 9.5 ered by theU P S user. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100.0 175 The preferred input and output voltages are listed in B Table 5-2. 3 37.-`-`.3 Rated 7. 15 These rated values and performances shall be measured at the input and output terminal of theU P S ..4 50 5. O.```. Manufacturers may provide ratings in and beyond between 2.. 0.2. 0.``.
```. .70 NEMA Standard >30 -100 0.. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584. User=.. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100.`. ~-_____ = 6470247 0503940 6 3 2 " ~~ ~ ~ ~ " NEMA PE*3 92 PE 1-1992 Page 26 Table 53 - RATED VALUESOF THE UPS Values Characteristics Class* NEMA Standard INPUT Minimum Power Factorat rated load** 0.. ..````.`--- COPYRIGHT 2003.-`-`...80 >3oo -loo0 0..``.`..1 -1 0.``.60 >1-10 0.`.`.`. 1-20 + 5%.65 >10 -30 0..10% >2&1000 a 2% NEMA Standard --`.85 Input Current Limit 125% of normal full load input (Maximum battery recharging current (the value for this and/or maximum outout overload) characteristic typical) Authorized is Enpineering Information Walk-In:** If applicable Increasing from 25% normalfull (optional) load current to maximum current seconds in Authorized 202 toEngineering Information Maximum Peak InrushCurrent**10timesthenormal peak fullload Standard NEMA current input Input Current Total Harmonic Distribution(THD)** Iiahukm >e20 30% >2&200 15% >200 OUTPUT Steady state voltage regulationsfor no load to rated load and minimum to maximum dc voltage (Battery)+ Maxium Output Rating:&VA) -e Variations o.75 >loo -300 0.
f2% 50%Linear Unbalanced Loads" + 4% NEMA Standard OVERALL SYSTEM Efficiency See Fig. 1-2 No overload for load125% >2 -10 5 min. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100.```. **In the case of a type of WS that normally supplies the load directly from the ac input. the value is determined by the load and this value does not apply..`.````.. for5-3maximum levels (see NEMA MG 1-1987) NEMAStandard *See NEMA StandardizationPage for explanation of NEMA Standard Classes. . 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584.`--- Harmonic Distortion (THD) Maximum THD for s2 10% >2 5% NEMAStandard Overload Capacity Overload o. 5-1for minimum levels (for Voltagetransients dueto any See Fig. 1-2 Hz >2 f 0.``. COPYRIGHT 2003.2.... t In the case of a type of UPS that normally supplies the load directly from the ac input defined in section 9... maximum NEMA Standard y Factor Power UPS) Phase Displacement (for 3-phase 120°&2" Loads- Balanced Linear 50% Unbalanced Linear Loads-NEMAStandard 12Oof4' UPS) Voltage Unbalance (for 3-phase Balanced Linear Loads. tt In the case of a type of UPS that normally supplies the load directly from ac input.`..`.5 Hz NEMAStandard Output Frequency Slew Ratett 1 H z / S e c . >10min. the value is determined by the load and this value does not apply.`.``. 10 for 125% load NEMA Standard Output Frequency (Non-Synchronized) +1 o.-`-`. 5-2 formaximumlevels dynamic change in operating NEMA Standard Audible Noise See Fig.`. PE 1-1992 Page 27 Table 5-3(CONTINUED) RATED VALUED OF THE UPS Output VoltageTotal --`. User=..
09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584.`...`--- COPYRIGHT 2003..`. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100..``.`. .````.`.-`-`.`.``. User=....```... PE 1-1992 Page 28 --`.
`... 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584. PE 1-1992 Page 29 Percent Voltage Transient 180 ...``. forthe timeindicated.`. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100.`.. to the RMS value of the nominal ac voltage... User=..`. Figure 5-2 OUTPUT VOLTAGE TRANSIENT LIMITS COPYRIGHT 2003. .1 MS 1 MS 10 MS 100 MS 1 SEC --`.I\ \ ltage Transient L lit 80 I \ I NOM *O t I I I I \ \ .````.-`-`..`.I." I I / / I .-"" I I ""II IC- "" Ø -60 Underv tage Transients Li lit -80 for ?ateds2KVA -100 .```.`--- Transient Duration NOTE: The percent overvoltage or undervoltage is derived from the ratio of the RMS of the voltage deviation from the nominal voltage sinewave.``.
.``.-`-`. ... 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584.`.`.`.````..`.... .```.``. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100.`--- COPYRIGHT 2003.. User=.`." ~- b470247 0501944 288 PE 1-1992 Page 30 W CL! O z --`..
tional units to form a completeUPS either at the factory The UPS shall notbe damaged during operation with the or at the installation site. equivalent to the full rated load. If the test 6.. by interrupting theac input power shown in Table6-1 may be performed in any order.6AC Input ReturnTest a. 6. The test shall be conducted with rated load applied to This test shallbe performed when synchronization to an the UPS.5ACInputFailureTest functional units or combinations of such. load. PE 1-1992 Page 31 Section 6 TESTING STANDARDS GENERAL 6. cooling. the load shall be trans- external source is required.3SynchronizationTest ity.8.````. or simulated by switchingallonUPS rectifi- All other tests shall be conducted with full rated linear ers and bypass feeders at the same time.3. if applicable.. Frequency UPS testing shallbe performed after wiring of the func. input): a.3. UPS in more convenient.3.2 UPS Auxiliary Device@) Test tional units orU P S units shall be made to fail. Load tests shall be performed by connecting loads to the This test may be performed during another test if it is U P S output. Ac output voltage and 6. fans.`--- COPYRIGHT 2003.7 Parallel UPS Redundance Test (Appliesto b..15 in is specified.3. meters.3. Less extensive operational tests with frequency rate of change.3. shall be observed.6.`.`.`. the ac inputas far upstreamas practical.3. pumps.-`-`.4Frequency Slew Rate Equipment may be type and routine tested in the factory This test shall be performed to determine the output as a completeU P S . redundant func- 6.1 through 6. The test appropriate dcsome. shall be verified the limits given in Figure 5-2.. in conjunction with the light load test. and Figures 2-9 and 2-10) other means required to determine proper UPS This test shall be required for UPS incorporating parallel operation. this following tests shall be performed (with and without ac test shall be performed at the end of that test. The test shall be conducted with rated load applied to the U P S . 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584. limits givenin Figure 5-2.3.``.whereappropriate input power. User=. The final test on The test shall be performed..```. While synchronized. Alternatively.Withandwithoutredundancy.3.Frequencyvariationlimits ferred to bypass and then back to UPS..3. The operation of all control switches..3. Output voltage vari- 6. when conducted on-site. By failure simulation. appropriate The dc source. batteries and load may be performed on site.3. or during another test ifit is more convenient. The output The functioning ofU P S auxiliary devices. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100.variation shall be measured.whereappropriate This test shall be performed either by restoring the ac b. or shall be simulatedby switching off all UPS rectifiers and bypass feedersat the same time.``.1LightLoadTest frequency shall alsobe measured. voltage transient shall be measured shall and comply with ing. 6. suchas light. annunciators. --`. routinetestsin the factorymay be restrictedto Ups 6.( S e e Table 6-1. This test shall be performed to verify that the U P S is This test shall normallybe performed with a battery or correctly connected and all functions operate properly.3 TESTSPECIFICATIONS The input failure should be conducted by interrupting The tests 6.Outputvoltageandfrequency 6. Proper operation of all UPS rectifiers including walk-in. By failure simulation. redundancy.9Full Load Test able limits.2 UPS TESTS ations shall be checked for specified limits.Withandwithoutbypass. .. The output voltage shall be tested by use of a variable frequency generator or transient shall be measured and shall comply with the by simulation of circuit conditions. shall use the maximum available load which does not exceed the rated continuous load: 6.8TransferTest This test shall be required Ufor P S with bypass capabil- 6.1 6.`.`. with a battery or other site then replaces the UPS routine factory test. the phase angle between bypass source and inverter shall be measured and checked against manufacturers’ accept.) loss of one phase or improper phase rotation in a three- phase system..
User=.14 Energy Restore Time X X 6. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584.3.3.18 Output overvoltage protection X X 6.2 Synchronization X X X 6..`.``.23 Audible noise X X 6.`--- COPYRIGHT 2003.16 Short-circuit test X X 6.3.3.22 conducted noise X X Harmonic components X X 6.3.21 Radio frequency interference and 6.24 Surge voltage X X 6..-`-`.3.`..20 Frequent modulation X X 6.26 Dielectric withstand X X 6.15 Overload capability X X X 6.3.6 Parallel UPS redundancy test X 6.13 Stored Energy time X X 6.25 Operating temperature X X 6.```.`.3.3.3.`.3.8 Full load X X 6.19 Periodoc output voltage modulation X X 6.3.``.3.3...11 Output voltage 6.3.12 unbalance X X Current divisionin parallel Ups X X X 6.5 Ac input return X X 6.3.3.9 U P S efficiency X Unbalanced load X X 6.3.3 Output frequency rate 6.3.3. . National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100.3.3.17 Restart X X X 6..1 Transfer X X X 6.`. NEMA P E 8 3 7 2 W 6470247 0503746 050 PE 1-1992 Page 32 Table 6-1 TESTING SCHEDULE Optional Qpe of Test When (See Specific (Mandatory) for Required pages 53) Specification Application Test Test RoutineType Test Light load X X 6.21 --`..4 of change X Ac input failure X X 6..3.3.1 Auxiliary device(s) X X 6.3.3..````.
PE 1-1992
parallel connectionshall be load tested by testing individ- 6.3.17 Short Circuit Test
ual U P S units separately oras a whole. A short circuit shall
be applied to the U P S output and the
following items measured for a U P S without bypass and
6.3.10 UPS Efficiency Test
with ac input power applied:
U P S efficiency shall be determined by the measurement a. The operation of protective devices or circuits
of the real power input and output. b. The peak short circuit current
c.Theoutputsteadystateshortcircuitcurrentand
6.3.11 Unbalanced Load Test length of time, if specified.
Unbalanced loads shall be appliedto the U P S or UPS Appropriate circuit protective devices (fuses, circuit
units, The voltage unbalance shall be measured. breakers) shall be permitted when making these tests.
Phase angle deviations shall be measured, or calculated
from the measured values of phase-to-phase and phase-to- 6.3.18 Restart Test
neutral voltages. Automatic or otherrestart means shall be tested aftera
complete shutdown ofU P S .
6.3.12 Balanced Load Tests
Balanced loads shall be applied UtoP Sthe or U P S units. 6.3.19 Output Overvoltage Protect ion Test
The voltage unbalance shall be measured. Output overvoltage protection shall be tested.
from the measured values of phase-to-phase and phase-to- 6.3.20 Periodic Output Voltage Modulation Test
neutral voltages. Voltages shall be observed at specific loads and operat-
6.3.13 Current Division in Parallel or Parallel
Redundant UPS Test 6.3.21 Frequency Modulation Test
Current Division in the parallel or parallel redundant If applicable, the frequency modulation test shall be
U P S units or functional units shall be measuredwith either consistent with 8.8.
a simulated or actual load.
6.3.22 Radio Frequency Interference and
6.3.14 Stored Energy Time Test (Batteries) Conducted Noise Tests
The stored energy time be shall
determined by switching Radio frequency interferences and conducted noise tests
off the ac input to the U P S operating at rated load and shall be conducted in compliance with applicable federal
measuringthedurationthatspecifiedoutputpower is regulations.
maintained. The battery voltage must not fall below the Radio fiequency interference and conducted noise of
specified value during this test. U P S shall be specifiedfor rated loads.
New batteries often not do provide rated capacity during
the initial operation.A freshening chargemay be recom- 6.3.23 Harmonic Components Test
mended by the manufacturer before discharge tests are Harmonic components of output voltage shall be tested
performed. The initial discharge test performance should under rated linear load conditions per 8.4.3.
be compared against rated performance. Repeated charge Input currenttotal harmonics distortion(THD) shall be
and discharge cycles may initially indicate greater than tested under rated linear load conditions with the ac input
rated performance but may reduce the life of the battery. sourcespecifiedbythe U P S manufacturer.Theinput
source voltage shall be set to the nominalvalve.
6.3.15 Restored Energy Time Test
When the energy restored time is specified, it shall be 6.3.24 Audible Noise Test
established by repeating the stored energy time test, as Audible noise may be tested in accordance with ANSI
described in 6.3.14, after the specified chargingperiod. For S 1.31 to S 1.36-1972, Method for Physical Measurement
U P S with chargers or rectifier/chargers, the charging cur- of Sound, using a sound level meter conforming to the
rent and voltage should be measured to verify specified requirements of ANSIS 1.4- 197 1.
charging rate and float voltage regulations.
6.3.25 Surge Withstand Capability Test
6.3.16 Overbad Capability Test
The ac input terminals of theU P S shall be subjectedto
The specified kVAor kW overload(s) shall be appliedto the appropriate surge voltage waveform as described in
the U P S outputforthetimeinterval(s)specified.The C62.41-1987and C62.45-1987rnEE 587 SurgeWith-
output voltage and current be shall
measured with ac input stand Capability (SWC) Test or demonstrate compliance
power applied. by analysis.
NEMA P E * l 9 2 W
The U P S shall continue to operate
as specified. ers (second edition) and IEC 146-2 (1974) Part 2. Semi-
conductor Self-Commutated Converters, (first edition).
6.3.26 Operating Temperature Test The following testing procedures may be employed
Operating temperatures of componentsshall be within a. Dielectric/Insulation-IEC 146 Sub-clause492.1
UL 1778-1989.
the limits specified in b.Checkingofauxiliarydevices-IEC 146 Sub-
6.3.27 Dielectric Voltagewithstand Test c. Checkingofprotective deviceeIEC 146 Sub-
be performed in accordance
Dielectric Voltage test shall clause 492.9
with that specifiedin UL 1778-1989. d.Checkingofsupervisingandremotesignalling
6.4TESTMEASURINGMETHODS FOR INPUT e. Checkingofmeasuringdevices
AND OUTPUT f. Lightloadtransfertest
Authorized Engineering Information 3-5-1992
6.4.1 Accuracy Type testing of U P S switches shall require a functional
Harmonics may influence the accuracy of the test meas- test with a complete WS. In addition to the tests men-
be evalu-
urement, and their affects on test results should tioned above,a type test programshall include:
ated. a. Complete functional test, e.g. switching of loads
6.4.2VoltageTransients c.
temperature rise-IEC 146-2 Sub-
Voltage transients shallbe measured by eitheran oscil- clause 5.5
loscope, transient recorder, or by another method which d. Shorttimeoverload-IEC 146-2 Sub-clause 5.9
records momentary valuesof transients. e. Shortcircuitcapability-IEC 146-2 Subclause
FUNCTIONAL UNITTESTS
Functional unit tests are required only when separate 6.5.4MonitoringandControlEquipment
functional units are supplied. If unit tests arerequired, they Unit tests shall include:
shall be tested as shown in6.5.1-6.5.5. Dielectric/insulation
b. Checkingof electricalcircuits
6.5.1RectifierTests c.Checkingofoperationalcontrolsandalarms
Rectifier testsshall be performed according to Section7.
6.5.5UPSTestingProcedure
6.5.2InverterTests Following the functional testing, in accordance with6.5,
Inverter tests shall be performed in accordance with if required, the U P S testing shall be completed at the
Section 8. installation site, per6.2 and 6.3.
6.5.3TestingofUPS switches
Operational tests of U P S switches may be performed in
accordance with IEC 146 (1973)Semiconductor Convert-
~- - . .~ ..
NEMA PE*3 92 m b470247 0503949 BbT m
B SECTION 7
RECTlFlEWCHARGER TESTS
GENERAL d.Current-limittest (see 7.6)
Tests are divided intotwo categories, type tests listed in e.Ripplevoltagemeasurement (see 7.11)
7.1.1 and routine tests listed in 7.1.2.
7.1.1TypeTests Dielectric voltage test shall be performed in accordance
Type tests are those tests which are made to determine with that specified inUL 1778-1989.
the performance characteristics of rectifier/chargers. They For those tests, all semiconductors, capacitors, and sen-
need not be repeated unless design changes are made that sitive control components may be short-circuited; printed
would affectthe test results. Type tests include are
butnot circuit control boards may be removed.
VOLTAGE ADJUSTMENT TEST
a.Dielectrictest (see 7.2)
(SeeFigue 7-1)
b.Voltageadjustmenttest(see7.3)
c.No-loadtest (see7.4) The ac input shall be adjusted to the rated value and the
d.Temperature rise test(see7.5) output current to one-half the rated value. Theand floating
e.Current-limittest (see 7.6) equalizing voltage adjustments shallbe within the ranges
f. Short-circuittest (see 7.7) specified.
g.Voltageregulatortest(see7.8) 7.4 NCLOAD TEST (SeeFigure7-1)
h. Efficiencymeasurement (see 7.9)
i. Powerfactormeasurement (see 7.10) The battery rectifier/charger shall be operatedfor 5
j. Ripplevoltagemeasurement (see 7.11) minutes with no-load applied, at the range limits of the
k. Audiblenoisetest(see7.12) supply voltage, to assure its ability to float-charge the
D 1. Voltagesurgetest(see7.13) connected battery.
7.1.2 Routine Tests
(See Figue 7-1)
The following routine tests be
are those tests which shall
performed by the manufactureron all production units: The battery rectifier/charger shall be operated continu-
a. Dielectrictest (see 7.2) ously at its maximum output current until there is no
b.Voltageadjustmenttest(see7.3) further rise in the temperature of any component. The
c.No-loadtest (see 7.4) temperature rise shall not exceed the values given inUL
1778-1989.
I+ TEST
D INTERCONNECTION OFBAlTERY
CHARGER, BAlTERY AND LOAD
where remote sensing is required.`. PE 1-1992 Page 36 The load shallbe resistive. voltage while applying at least three increments no-load.c.3141..7SHORT-CIRCUITTEST (SeeFigure7-1) (SeeFigure 7-1) A short-circuit shall be placed across the output termi. by measuring the total power at the alternating-current input terminalsby means of wattmeters and by measuring 7.Enom Measurements of ripple voltage shall be taken at the terminals of a fully charged battery. voltage and current. --`.````. If. the input watts can (SeeFigure 7-1) be measured witha suitable wattmeter and the Voltamperes This test shallbe made at the rated floating and equaliz.Emax .```. the conditions of measurement shall be indicated. The maximum deviation. the minimum @.12 AUDIBLE NOISE TEST (SeeFigure 7-1) the average values of the direct-current voltage and current The rectifierkharger shall be operated under nominal at the output terminals at rated output.8 VOLTAGE REGULATION TEST For single-phase rectifier/chargers. and a variable resistive load shall (SeeFigure 7-1) be connected across the battery terminals to cover the The efficiency ofa battery charger shall be determined power rating of the battery charger. the efficiency shallbe parallel.`--- COPYRIGHT 2003.`. The power factorforsingle-andthree-phaserecti- nals of the rectifier/charger. (in percent) .(input watts) tained..(output watts) xloo% the maximum temperature rise of that componentis ascer.36- 1972.. all peripheral loads shall be discon- 7. such as fans. efficiency is measured at other to its design current-limit value until its output voltage thanratedaverage directTcment voltage and full-load drops to at least the level of a fully-discharged battery as input. to provide the required current. Power Factor= Total input volts amperes From the values measured. For a three-phased charger.. expressed measured with rms responding meters.-`-`. the input power factor may half-load.6CURRENT-LIMITTEST (SeeFigure7-1) power requirements of all accessories. 7. The rectifier/chargerbeshall operated input voltage and true rms input current. the input watts shall include the 7. produce the highest audible sound level. Ripple voltage shall The regulationis usually expressed as a percentagea of be expressed in terms of an rms value and/or rms value as nominal value where&om is equalto 1/2 the sum ofEmin a percentage of the average dc output voltage of the battery and Emax.. the charger shall be operated in that mode until Efficiency . theyare shall be determined.`. . can be calculated fmm the measurements of the true rms ing voltage settings. The charger shall be capable fier/chargers shallbe calculated as follows: of withstanding the short-circuit condition either by means of the current limit feature or operation of an output circuit watts per phase Power Factor= breaker ora fuse. the voltage shall be Total input watts measured at the battery terminals. using rms re- at the minimum and maximum limits of specified line sponding meters. the maximum (Emax). specified. full-load.min) and the nominal (Enom) voltage values Where the voltage and currentare rms values.. as a percentage. Unless otherwisestated. User=.`.11 RIPPLE VOLTAGE MEASUREMENT Maximum . may be calculated as follows: 7. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100.. The average dc voltage be shall meas.9 EFFICIENCY MEASUREMENT nected from the battery. be calculated as follows: ured at the output terminals of the charger except that. with a battery connectedin From the values thus measured. calculated in accordance with the following: If a mode of operation other than at maximum output current would result in a greater temperature rise in any averagedc component.`. Output watts is full load conditions to determine the conditions which product of d. charger. During this test.Ernin xloo (See Figure 7-1) Deviationpercent . The battery be shall removed for this test. for The rectSer/charger shall be operated and overloaded the sake of convenience. rms volt-amperes per phase 7..``. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584. Measurements shall be made in accordance with ANSI S1.``.10 POWER FACTORMEASUREMENT 7..
~ .~ .```. DISCHARGE SWITCH CHARGE SWITCH CHARGE SOURCE L O AC SOURCE RECTIFIER O CHARGER L Figure 7-2 HOOK-UP FOR TRANSIENT VOLTAGE WITHSTAND CAPABILITY TEST --`.``.41-1980 and C62...`.. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100.````...`.`..13 SURGE WITHSTAND CAPABILITY TEST (SeeFigure 7-2) The surge withstand capability shallbe tested in accordance withANSI C62. User=.-`-`.``. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584.45-1987 or compliance demonstrated by analysis. ..`--- COPYRIGHT 2003. -~ NEMA P E * 1 9 2 W 6 4 7 0 2 4 70 5 0 1 9 5 14 1 8 PE 1-1992 Page 37 7.. ~ .`.`..
..`--- COPYRIGHT 2003.`.. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584...`...``. User=..````. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100. . PE 1-1992 Page 38 --`.`.`.```.`.-`-`..``.
(The temperature rise shall not exceed the valves givenUL in 1778-1989.andV1 at which steady state has been reached. perature rise.g. 8. NEMA P E S 1 9 2 6470247 0503953 290 PE 1-1992 Page 39 Section 8 INVERTER TESTS 8..1 GENERAL d.`.````. such as contactors. inductors.4..3 Power Efficiency 8. User=. A variable load consisting of resistors.1 Frequency Tolerance 8. and WA The inverter to be tested shall be representative.1Schedule of Tests 8. of the production run for which the testsare to be e. tempera- The test circuit consists of the following: ture rise shallbe determined for the minimum.``. W2. in all (wave analyzer) respects.4 Audible Noise 8.4. and a. A variabledirectvoltagesourceU1 maximum values of supply voltage.5 Output Short-circuitCurrent * 8.2 Temperature Rise * * 8.) Table 8-1 TESTING SCHEDULE (Optional) (Mandatory) Test When Required for Type See Specific Routine Sec 8 Test Application Test Test for Detail Auxiliary Device(s) * 8.9 Voltage Dip 8. shall be checked.. A2.12 COPYRIGHT 2003. rated.-`-`..`.3 TEMPERATURE RISE TEST 8. temperature rise) shall switches S3 not distort the test results.4 can be carried out with the test conditions until the temperatureallofcritical components circuitshown inFigure 8-1.1.4. on all inverters.. Output instrumentation V3. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584...1.. Additional means forinserting fuses andshort circuits. b.If this supply voltage is not known.`.```. Some testsare required The functioning of auxiliary devices.``. A bank of electrolytic capacitorsCl to assure low Temperature of all critical components shall be moni- impedance input voltage to the inverter under test under rated cooling conditions tored to determine the point c. 8. --`. fans.3 Rated Continous Load and Light Load 8. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100.4. W1.8 Voltage Rise 8.`--- considered valid.2CHECKING OF AUXIUARYDEVICES The testprogram for an inverter unit includes some or all of the tests listed in Table 8-1.6 Output Voltage Unbalance * 8.`..7 Frequency Modulation 8..`.4 Output Voltage Tolerance 8.2TestCircuit Diagram The invertershall be operated continuously under rated The tests described in 8. .11 Dielectric Withstand * * 8. Instrumentation for securing auxiliary and capacitors to be connected by means of the data or making concurrent test (e. the specific application. F.10 Operating Temperature * 8. This recommended test circuithas reached a steady-state value.2 Relative Harmonic Content 8. but canbealso regarded Withinthesupplyvoltagerange of the inverter. the as a single-phase representation of a test set-up for a supply voltage shall be selected to give maximum tem- multiphase inverter. f. etc. others are performed only if required for pumps. applies to single-phase inverters. Inputinstrumentation Al.
and so indicated.4 RATED CONTINUOUSLOAD AND continuous load. the supply voltage shallbe adjusted sequentially to 8.it shall be measured over the specified range --`. The wave analyzer.`. shall be a distortion analyzer or quate accuracy to indicate output current with the inverter a broad-band voltmeterused in conjunction with a rejec- under test.``.3 Output HarmonicDistortion Voltmeter V3 shallbe an rms-reading voltmeter of ade. (SeeFigure 8-1) quate accuracy to indicate output voltage of the inverter VoltmetersV1andV3 and ammeter A2 shall be in under test.WA. If the frequency regulation is to be determined over a current range other then light load up through rated con- 8..4.`--- Voltmeter V1 shallbe a dc voltmeter of adequate accu.2 Frequency Regulation(SeeFigure 8-1) the minimum.4. .`. 8. rated and maximum values and the requiredVoltmeter V1 and ammeter A2 shall be in accordance measurements (see 8.. it shall be measured over the specified UGHT-LOAD TESTS range andso indicated. rejected by wave analyzer..-`-`..1through8.4.. Ammeter A2 shall be an rms-reading ammeter of ade. WA.1. NEMA PE*L 92 W 64702470503954L27 PE 1-1992 Page 40 8. shall be of sufficient accmcy Theinvertershallthen be testedunderalight-load to read the fundamental frequency of the output atvoltage condition. and the required measurements made at each point. tion filter and a pass-band filter.`.1 Output Voltage Regulation ( S e e Figure 8-1) tinuous load.F. The output voltage regulation shall be determined from The relative harmonic content shall be determined from the readings taken of V3 for the specified supply voltage reading the rms value of the output voltage of the inverter range as read on voltmeter V1 and for the light load and under test and therms value after the has been fpndamental rated continuous loadas noted from ammeterA2.``. The frequency meter. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100. racy to indicate the supply voltage to the inverter under test.4. User=.```. accordance with 8.4.Thesupplyvoltageshallagain be adjusted a fixed value or over the frequency range of the inverter sequentially to the minimum.4.4)madeateach with 8.4.. While the inverter is operating under continuous rated load.`. rated and maximum values under test..````.1. If the output voltage tolerance is to be determined over The relative harmonic content shall be determined for a current range other then light load up through rated the specified supply voltage range as read on voltmeter V1 - and for the light-load and rated continuous load as noted from ammeterA2. point. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584..`.. L 1 n + O - SI INVERTER U1 ” UNDER TEST /y c1 - I U wo” RA Figure 8-1 TEST CIRCUIT DIAGRAM COPYRIGHT 2003.
F. If the output voltage has a low relative har- monic content.6 OUTPUT SHORT-CIRCUIT-CURRENT TEST VoltmetersV1andV3andammeter A2 shall be in The short-circuit-current test is made to determine the accordancewith8. 8.) RMS voltage measurementsat rated balanced load and no The conversionfactor shall be determinedfromthe load.. VAVGis the average of the three-phase voltage cordance with 8. Authorized Engineering Information3-5-1 992 Ammeter Al shall be a mean-value direct-reading am. Voltmeter V3 and frequency meter. calculated as the ratio of OU PU. Power efficiency shall be determined from the readings Unbalanced ratio= OUPU taken from wattmeter W1 and wattmeter W2 for speci- the COPYRIGHT 2003. VoltmetersV1andV3andammeter A2 shall be in Where: accordance with 8. Vn = negative sequence component of the The wattmeter W1 shall be of sufficient accuracy to read output voltage. voltage measurement.`.2.VAVG Voltage Unbalance= xloo% voltmeterV1andforthelightloadupthroughrated VAVG continuous loadas noted from ammeterA2. Voltmeter V3 and frequency meterF range andso indicated.``.4.4 and Figure 8-1. it shall be meas.`. ammeter Al and watt. accordance with 8. NEMA PE*3 9 2 6470247 0503955 Ob3 PE 1-1992 Page 41 If the relative harmonic content is to be determined over fied input voltage rangeas read on voltmeter V1 and for a current range other then light load up through rated the light load up through rated continuous load as noted continuous load. 8.4. The wattmeter W2 shall be of sufficient accuracy to read The minis the minimum of the three-phase the fundamental power output from the inverter under test.`. shall be observed to insure that testsare made within the Iftherelativeharmoniccontent is specified for the output voltage tolerance band and within the frequency output current of the inverter under test.``.4. 8. . = VAVG. (Sufficient accuracy may be obtained by the use of a The test shallbe repeated at the varioustimes during the wattmeter which is so designed as to readthe fundamental cycle to determine worst case... F. shall be observed to ensure that or tests are made within the output voltage tolerance band and within the frequency tolerance. time for thefuse to open. measurements.4..4. meter W2.4 Power Efficiency The test set upin accordance with Figure8-1... --`.36-1972. the power input. for the specified input voltage as range read on V w . power only. The test shallbe made at rated input direct voltage and meter of adequate accuracy to indicate the direct-current rated continuous load and with appropriate fuses.2.3141.```.. the output voltage relative The inverter shallbe operated at nominal full load con- harmonic content shall be measured under rated condi. ured andso indicated. Measurements shall be made in accordance with tions. The load condition be shall specified in this case if the load differs from a pure resistive load. tolerance.1andthefrequencymeter. following equation and that yields the highest value. The testset up shallbe in accordance with 8.````. The output terminals shall be short circuited by a fuse at Wattmeter W2 shall be of sufficient accuracy to read the that time in the output cycle which results in the longest fundamental power output from the inverter under test.`. output voltage.1 and the frequency meter F. ANSI S1. to meter suitable forthis frequency). ditions.7OUTPUTVOLTAGEUNBALANCETEST quency canbe measured with sufficient accuracy by using The output voltage unbalance shall be determined from a wattmeter suitable for this frequency. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100.`.. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584. in available 12t on a branch circuit supplied by the inverter.VMIN VUNBAL VAVGx 100% 8. (Sufficient accuracy may be obtainedbythe use of a Vmax is the maximum of the three-phase wattmeter which is so designed as to read the fundamental voltage measurement. the output power of the fundamental fre. the output power of the fundamental frequency The voltage unbalance factor shallbe can be measured with sufficient accuracy by using a watt. This voltage unbalance shall be determined by the readings taken from voltmeter V1. User=.-`-`. in ac. poweronly if theoutputhasalowrelativeharmonic NEMA Standard 3-5-1992 content.. it shall be measured over the specified from ammeter A2.5 AUDIBLENOISE TEST If not otherwise specified.`--- input to the inverter under test. including both direct power and ripple Vp = Positive sequence component of the power.
.. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584. with that specified in UL 1778. printed circuit controlboards may be removed. . and sen- The test for voltagerise shall be as specified.````.`.9 OUTPUT OVERVOLTAGE TRANSIENT For those tests. PE 1-1992 LECTRIC 8. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100.. sitive control components may be short-circuited...`....8MODULATION FREQUENCY Dielectric voltage testshall be performed in accordance 4 The test for frequency modulation shall be as specified.11 8. 8..`.-`-`.``. 8.10 OUTPUTUNDERVOLTAGETRANSIENT The test for voltagedip shall be as specified.all semiconductors.`. --`.``. User=.```.`--- 4 i COPYRIGHT 2003. capacitors.`.
. be strictly in accordance with the battery out condensation).``. that is thermallystraW~ed. 4. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584.orabrasiveen- 3.41-1987 (IEEE Guide for Surge c. the battery may not a. (5. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100. fumes number.`.````.Nosingleharmonicuptothe11thshall environmental or service conditions exist.```. Distortion of the ac line input voltages shall be limited to the following: 9.2 tween the warmest and coolest cells in the below. or me.arti- chargedbatterywhenoperatedwith ac input cle 480-8a.See NEC (National Electric Code). INPUT AC VOLTAGE e.. 424 frequency reference.explosive. User=.. rated performance and life when operated within the range 1.1 g. a U P S should be operated battery shall not exceed 3'C. The manufacturer should be consulted for battery is on a tiered rack inan atmosphere further information regarding any unusual service condi. shall be capable of operating within its rating under the 3. The manufacturer should be consulted if any unusual 2.Totalharmonicvoltagedistortionshallnot CONDITIONS exceed 10%.. tions.. The ac line input frequency hasa tolerance that Nominal Maximum Minimum does not exceed5127 percent of nominal.. corrosive. the 9. Note106 that 120 most U P S inverters 220disconnect synchronization 184 208 from the reference 254 frequency upon 212 smaller devia. d. the shalI prevent the accumu- d. The input AC voltage range be shall as indicated lation of gases from the battery such that the in Table 9-1. Conductivedustsuch as metalfilings.carbon. The dc voltage supplied to the battery shall b.3 UNUSUAL ENVIRONMENTAL 1. If the battery ventilation consists system of vented cells.4"E). 480 Authorized EngineeringInformation 3-51 508 992 575 600 f. 6470247 0501957 936 W PE 1-1992 Page 43 D Section 9 SERVICE CONDITIONS GENERAL 9. Harmonics higher than the 11th conditionsare exposure to: shall decayas the reciprocal of the harmonic Damaging a. warms the battery nonuniformly. B C. The within these ranges to prevent premature failure or non. nominal witha range of 32 to 104"E).. highly accurate. The altitude does not exceed 3300 feet (loo0 meters). The humidity does not exceed 95 percent (with. If operated at the low end of the temperature following conditions: range in item 1 above. within the limits given in Table 9-1..2 USUAL SERVICE CONDITIONS battery's useful life may be shortened.`.`.Wheneverpossible. the limits shall apply to any single Table 9-1 phase voltage. The 25'C nominal with a range of O to 40°C (77°F manufacturer shouldbe consulted.`--- 508 internal.5293Hz) andthen run on 245their 277 --`. manufacturer's specification. or if the chanical wear. b. The ambientair temperature at the equipment is provide the expected stored energy time.``. 2. B Voltages in Low Voltage AC Power Circuits) etc. temperature differenceoccurs when the bat- nominal operation resulting from abnormal deterioration teryismountednear a heat source that of the insulation system. If operated continuously at the high end of the temperature range in item 1 above. electrical breakdown.Thefollowingserviceconditionsaffectthebat- Uninterruptible power systems are designed to deliver tery. 5. Among such exceed 5%. Con- A U P S constructed in accordance with these standards sult the manufacturer. The U P S shall provide specified concentration of hydrogen shall not exceed output power and recharge and maintain a fully 2%. 240 tions (typically 0.`.-`-`. For three- phase systems.Steamor oil mist COPYRIGHT 2003..Very dirty.Surges shall bewithinthelimitsstatedin vironments ANSI C62. NEMA PE81 92 m.. The maximum temperature difference be- of usual service conditions described in paragraph 9.`.
COPYRIGHT 2003.225 Kg/cu. PE 1-1992 Page 44 e. 5000 16400 .Maximum faultcurrentavailabilityinexcess of the fault current rating ofthe U P S protective devices..74 n.seacoast.4.1 Ac Input@)to UPS a. corrosion. Some examples of unusual electri- cal conditions are shown in section 9. meterat sea which cause deterioration. Salt air.-`-`.4'F)be..41-1987. e.`.1.Transientvoltagesorotherelectricalnoisesuch as that caused by lightning or reactive switching.forced air P.. boilers. or blockage level. Restriction of ventilation 4000 13100 . Continuousaveragerelativehumidityabove cooled equipment will have a smaller derating factor.``.9 1 fungus 2500 8200 . or shipboard conditions DERATING FACTORSFOR USE AT ALTITUDE g.`--- c. Combustible mixtureof dusts or gases Table 9-2 f.````.2. Derating tween warmest and coolest cells of the battery Meters Feet Factor * Plant 1000 3300 1.. Radioactivity levels above those of the natural background 3500 11500 . f.```. --`. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100. .4 UNUSUAL ELECTRICAL CONDITIONS The manufacturer should be consulted if unusual elec- trical conditions exist. 9. See Table 9-2 for typical derating. d. 95% orbelow 10% 9.o i..4.95 J. Voltagesurgesinexcess of ANSI C62.`. Altitudes in excess of 3300 feet (loo0 meters). Extremetemperaturesorsuddentemperature ABOVE 1000 METERS changes h.. Highradiatedorconductedheatfromother 4500 14800 . User=..Voltageharmonicsinexcess of thosegiven in 9. etc.78 m. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584.70 sources such as sunlight. 9.5.2.Superimposedhighfrequencyvoltages (EM)..`. Strong electromagnetic fields 1500 4900 .. Seismic activity or abnormal shock or vibration r. b. g.82 1.`.4. Voltage in excess of the tolerances given in 9.Frequencyinexcess ofthetolerancegiven in 9. furnaces. Atmospheric conditions conducive to growth of 2000 660 . 15'C (59 "F). of converterparts èxposed to the liquid coolant "Sincefansloseefficiencywithaltitude.86 k.`. Temperature gradient exceeding 3'C (5. Coolingliquidcontainingacidsorimpurities Based on densityof dry air = 1.2.67 O. Insect or vermin infestation 3000 9800 .6.``.
Some Floor loading must be considered.2 Qualified Personnel load(s) as is practicable.1ElectricalRequirements 10. output.3INITIAL UPS INSPECTION This section of the standard covers the installation of 10.2. other units may gested.`.2.. to provide dropped..````.``.. Voltage requirements for the U P S input and Ups 10.3. When equipment is U P S ’ S require minor adjustment during installation.2 FLOORLOADING trical contractor for installation is recommended. and site 10.. The total load in kVA andkW ordered have been supplied and/or installed. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584. It is the purposeof this standard.`. able operation of the UPS.. 10. Installations may be subject to national and damage.1Site Survey manual in advance of delivery.`--- COPYRIGHT 2003. tests may need to be performed to assure that theUPS is Floor loading shall not exceed the values defined by local performing as required.-`-`. Some smaller Upon receipt of theUPS.2. National and local codes should be met. Audible noise j. the system e.3..4. should be considered during the placement of the U P S . Available power 10.2 UPS Location Before installation.1 UPSLOCATEDCLOSETOCRITICAL requirements.``. 10..2. Read the owners manual BEFORE beginning the actual installation.r NEMA PE*& 92 m 6470247 0501959 709 m PE 1-1992 Page 45 Section 10 INSTALLATION 10. Soundproofing maybe required. Before unpacking. The following items should be determined Verify that all options and spare parts which have been a.4. --`.)The UPS Building g. It is advisableto obtain a copy of the owners 10.2 Storage requirements output c. codes and/or the architectural standards for the building. 10.2. require experienced and licensed electricians for system The packaging should be examined for visible signsof installation. Ventilationandambienttemperatureranges. .`.4. alerting the end user to examine the electronics information which will promote safe installation and reli-for possible shipment damage.1 GENERAL INFORMATION 10. This erally supplied by the manufacturer) should be obtained.`. Door clearances batteries shouldbe maintained and charged at intervals if f.2. Verify thatthe site conditions are in accordance with the Verify that the unit received has been designed to operate information which has been gathered and documented in from the line input voltages and frequency at the site. Floor loading life expectancy is be to realized.2. access should be kept clean and free from dust and dirt. (See 4 Section. The installation of a UPS can be very simple. check the number on the crate against the bill of lading to assure the correct product has been 10.```.Elevatoravailabilityandcapacity delivery. User=. and installed on casters..4 Line and Circuit Breaker Sizing The incoming line and incoming circuit breaker($ shall be sized in accordance with theUPS input rating. the following steps aresug- units can be plugged into a wall outlet. h.3 Installation Wiring Diagram and Instructions 10. andin accordance with local and national electrical codes.1IncomingInspection single phase and three-phase UPSes.3 AUDIBLENOISE U P S installation wiring diagrams and instructions (gen- Most UPS systems generate some audible noise. LOADS It is desirable to locate theUPS as close to the critical 10.4 INSTALLATION i.2. A crushed package might indicatethe unit was local codes. the UPS may not be installed upon d. When installation timeis prolonged. A certified elec- 10. frequency. verify thatU P S received meets the specifications for input.`. or very complex. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100. neutral. the point floor loading is increased.. Appendix A. b. Qualified personnel shouldbe used to install theUPS.4. Floor plan In many cases.2SITEPLANNING shipped.
7. VERIFICATION More detailed information may be found in Section4. Phasing and wiring should be verified to make sure that proper connection has been COPYRIGHT 2003.`. theUPS output ment. f.7 OKSITE INSTALLATIONAND batteries are essential. Consult the U P S d.75 Safety Shields Refer to FIPS publication 94 for computer and data processing installations.`. Proper ventilation care and in handling 10.Storageconditionsandventilation h.7.``..6 Wire Sires and Typewire be permanently removed.10 UPS INSTALLATIONDIAGRAMS Verification Installation diagrams should be provided by the electri- Roper connection of line. The manufacturer should be consulted if unusual service An electrical contractor can provide the correct wire conditions exist.7.Maintainingan alarm log the bypass input and output of Uthe P S . there be may a phase shift between c. For three-phase sys.1 Line Neutral. NEMA PE*L 92 m 6470247 0503960 420 m PE 1-1992 Page 46 10. overcharging.```.. and seismic con- siderations may apply. and ground shall be U P S installation has been cal contractor after the electrical verified by the electrical contractor..3 Bypass Input b. lead acid batteries. Battery equalization 10. terminals.`. and Keep the distance between Uthe P S and the battery bank cause blindness. U P S withseparatebypass e.5 Grounding Requirements made.Mhihtainingabatterymaintenancescheduleand manufacturer for phase shift information.`. cordance with national and local codes. Thewire standard. and Phase Rotation 10. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584. size will vary with the size of theU P S and the line drop that is allowable. manufacturer.4.````. destroy fabrics.. tems.5 SAFETY battery banks. may generate gasses which are a potentially explosive mixture. care should be given to the design of the --`. User=.``. neutral. if spilled. Also. battery racks.6BATTERY LOCATION ing architecture.Schedule of airfiltercleaningand/orreplace- Prior to connection of the critical load.4 Load Voltage and Phasing Verified i. Refer to the owners manual or consult with the Grounding shall be installed and be maintained in ac.9 BATTERIES When planning the installation for the use of external 10. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100. safety shields have been included to protect operating personnel. phase rotation shallbe verified. . Consult local codes and the build- 10. Batteries contain the installation. Maintainingalogofdown-time input may be supplied by two feeders with separate dis. 10.`.4. The maintenance plan should have a forth by theU P S supplier. consultthe UPS supplier. voltage shouldbe verified. Ground.`--- See Section11 for safety information. Planning should include ready access to The location of the batteries inU PaS system varies and batteries and battery terminals for routine maintenance.Designatingaresponsible site representative 10. is dependent upon the size of UtheP S and the specifics of Batteries canbe potentially dangerous. When installation procedures It is important to keep the U P S as close to the critical require removal in order to gain access to high voltage load as is practical.. provision for: a. completed.11MAINTENANCEPLAN 10.7.. These are covered in Section 9 of this sizes andtype wire needed for theU P S system. For long runs. may be larger than prescribed by code in to order meet the 10..8 UNUSUALSERVICECONDITIONS voltage drop limitations. Batteries are very heavy. 10. Safety shields should never 10.. g. upon as short as possible. these safety shields shallbe replaced after the The sizeof the cables between the batteries and U P Sthe installation is complete. In some U P S e s .-`-`.2 DC Bus Voltages Verification (External A scheduled maintenance plan should be formulated Batteries) which will document the periods of routine maintenance The battery for the UPS shall meet the requirements set that are required. 10. Connectionstorquingandcleaning connects.Maintainingamaintenanceandrepairlog In some installations. sulfuric acid which can bum skin. phase and phase 1% rotationshould be verified. 10..
2.8 User Connections 11.2..3PrecautionaryLabeling case or enclosure constructedto provide a degreeof pro- Precautionary labeling shall be prepared to give infor.6 Labeling Size.2.2. g. Rated dc input current (optional for U P S with to the equipment. and Location Rated ac output power and output kVA Requirements j.. Rated ac output frequency i. 11. e. State the hazard b.2. if the precautionis not in death or severe personal injury signed to meet or exceed an applicable standard such as followed..5 Label Requirements Th.e manufacturer shall provide nameplate markingsto Warnings and instructions should NOTbe mixed.. Weight (optional). Rated ac output current 11.2. Rated dc input voltage (optional for U P S with The information shallbe readily visible and maybe on internal battery) a label.`.1 DESIGN STANDARD WARNING indicates a potential hazard that can result The U P S that is covered by this standard shall be de. Bepermanently affiied totheproduct.. CSA. Rated ac output voltage or its equivalent shallbe placed on theU P S . 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584. E€. in death or severe personal injuryi€ the precaution is not A grounding terminalor connection shallbe provided to followed.. The include the following minimum information: warning label shall: a. tag.`.7Enclosure The equipment shall be provided with a surrounding 11.if d.`. U L .2. m. Supplier’s name a.`. accommodating the power wiring specified for the maxi- WARNING.2TerminalMarkings sistent withANSI standard 2535. Describe the severity of thepotential harm d. Rated input voltage (and phase configuration. k. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100. Serial numberor control number c. 11..1NameplateMarkings 11. . User=. and CAUTION. COPYRIGHT 2003.2.Beconspicuous.. UPSes. Legibility.-`-`.I NEMA PE*& 9 2 6470247 O503963 3b7 PE 1-1992 Page 47 Section I 1 SAFETY 11. The manufacturer’s name and address internal battery) shall appear on the label unless it is readily visible else- O.````.andconcise --`. 11.```. Rated dc input voltage (required Ufor P S with Size.clear.`. where on the product. Rated dc input current (required UforP S with who may encounter the equipment before they are exposed external battery) to thehazards identified. accommodate a grounding wire coming into Uthe P S and shall have an ampacity specified in Article 250 of the National Electrical Code.``. legibility. or equivalent.A label identification number shall appear on the precautionary label.4Signal Words Alternating-current terminals shallbe of such size a and In descending order of severity. Labeling shall be con- 11.`--- C. Rated ac input frequency shown in Figure 11-1. CAUTION indicates a hazard that can result in minor personal injuryor property damage if the precaution is not 11..``. h. Model and/or part number designation or both b.4. Precautionary Labeling Example. or other printed form and permanently affixed n. Instruct the user how to avoid the hazard required) e. Rated ac input current As a minimum. mum rated current in Article3 10of the National Electrical DANGER indicates an immediate hazard that will result Code. three signal words are type and shall be so located that they will be capable of recognized to identify the level of hazards: DANGER. and location of precautionary labeling external battery) shall be such that it can be read and understood by those 1.2 SAFE CONSTRUCTION followed. User connections shall be permanently identifiedto per- mit proper installation. the electric shockcan kill information f. tection to personnel against accidental contact with ener- mation on hazards and precautionary measures to users ofgized and moving parts.
.-`-`. interlocks... guards.3.`.. --`.`.``. b. Terminals shallbe of such a size and type and shallbe 11. include safety protection instruction to the user/installer.1 Components and Assemblies Following is a list of expectations from the user.. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100.3 OPERATION 11.`.``.````.`. Certaincolorsareassociatedwithtrafficand safety therefore: -Red should signify danger or malfunction.`. opposite from the correct one. 11.2 Hazardous voltages shall be of such a size and type andbeshall so located that Users shall be protected against casual contact ofhaz- they willbe capable of accommodating the power wiring ardous voltage circuits..```. NEMA PES3 92 M 6470247 0503962 2 T 3 M PE 1-1992 Page 48 s Heed Protect yourself and others 1 ELECTRIC SHOCK Do nottouchelectricallylive can kill parts such as outputterminals or internal *iring UPS are suppliedbymultiplepowersources and battery.3. use. specified for the maximum rated current in Article 310 of the National Electrical Code.. etc. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584.4 Options & Additions so located that they will be capable of accommodatingthe The options and additions providedby the supplier shall power wiring specified for the proper ratings.. Only qualifiedpersonnel should install..5 Guidelines for User Interface 11. Do not remove thiswarning Figure 11 -1 PRECAUTIONARY LABELING EXAMPLE For U P S with external batteries.`--- COPYRIGHT 2003.3. direct-current terminals 11. terminations.. incorporated into the National Electrical Code.3. The U P S manufacturer shall the U P S to isolate hazards and minimize unsafe opera- specifythevoltageandcurrentrequirementsofthese tions. User=. The U P S components and assemblies should minimize a. Rotary controls should turn clockwise for ON or increase and counterclockwise for OFF or de- the possibility of being reversed or installed in positions crease. especially where reverse installation could causeinjury. 11.3 Safety Devices Control terminals shallbe of such size and type that they Hazards that cannot be totally eliminated shall have will accommodate the wiring specified in Article310 of safety devices.3.. or servicethisequipment.
`.. tions to include the following: Preventive a.`--- COPYRIGHT 2003.Safetyshieldsandinterlocks. loading d. --`. ... The manufacturer shall provide maintenance instruc- "Green should signify safeor normal condition. a. Clearancesforaccessandventilation Floor c..``...Correctivemaintenance.```. NEMA PE*3 92 W 6470247 0503963 1 3 T W PE 1-1992 Page 49 "Orange or yellow should signify caution or service 11.4 SAFETY INSPECTION b. c.`. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584..`. User=.How to determine if service is required onthe stallation: UPS.``..5 MAINTENANCE INSTRUCTIONS required.````.Userassemblyandinterconnections b. if applicable The following items shouldbe inspected following in..`. maintenance 11.-`-`.`. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100.
.-`-`. NEMA P E * & 92 6470247 0503964 076 PE 1-1992 Page 50 --`.`--- COPYRIGHT 2003..`..```. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100.. ..`.`.``..`. User=..``. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584..`..````.
`. and rated input power requirement. The formbemay used as a detailed check listto assure that important equipment compatibility issues are addressed. -duration -Crest factor -Ungrounded ( ) iii.-`-`.. .`--- ( )lagging -A peak inrush current. -Hz ( ) Neutral required P o w e r Factor.Equipmentlist ( ) Attach separate sheets showing equipment manufacturer. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100....Lighting ( ) iv.. a. ( )leading.. Single-phase loads -Vat.``. -duration -Crest factor ( ) ii.`.Rectifiersupplies ( ) v. Stored energy time (Battery run time) “inutes stored energy time M i n u t e s restored energy time COPYRIGHT 2003. model number. --__. Special load considerations ( ) Unbalanced loads ( ) Non-linear loads ( ) Intermittent duty ( ) Load sequencing ( )Other ( ) High neutral current ( ) Load sequencing ( ) High Neutral current ( ) Special grounding ( )Other d. --`. PROFILE OF THE LOAD TO BE OPERATED FROM THE UPS Information tobe provided by user.. USER DATA 2. c. Other b. H z P o w e r Factor.`.`. Air conditioning or othermotor ( ) iii. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584. ( )lagging -A peak inrush current.````.. User=. NEMA PE*L 92 = 6470247 0503965 T02 PE 1-1992 Page 51 Appendix A APPLICATION DATA FORM 1. Computersystem () ii. Estimated present total load requirements ( ) i. ( )leading.```. Types of loads ( ) i. Three-phase loads -Vac line-to-line JVA. Switchmodesupplies ( )vi. Actual power requirement mayvary from the nameplate data. GENERAL This form provides assistance in establishing the technical and engineering information needed by theUPS user and supplier to meet the user’s requirements.``. >VA.`..
...```.``... Limitations of space and weight f. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100. . Special conditions ( ) Standby generator -Vat..Specialmechanicalconditions: ( ) vibration.. a.. >VA 3. ACINPUTPOWERAVAILABILITY FOR UPS Information to be provided by user.. Maintenancebypassrequirements i....Also see Section 9. Audiblenoiselimits . . Single-phase loads V a c . ( ) heat.... if needed --`. NEMA PE*3 92 W 6470247 0503966 949 W PE 1-1992 Page 52 (Battery recharge time) e.z ( ) ii. ( ) dust.`..`. Available fault current Amps ( )v. Estimated futuretotal load requirements ( ) i.. >VA. Attach additional specifications or site drawings. H z ( ) High source impedance and/or poor voltage regulation ( ) Superimposed voltage harmonics ( ) Transient voltages ( ) Frequent outages -Number per month -Duration ( ) iv. Specialenvironmentalconditions: ( ) fumes. k V A ( ) ii. ( ) transport & handling ( ) access limitations. Ambient temperature.. ( ) salt air.. >VAH..Coolingsystem .````.( ) other e.-`-`. Three-phase V a c line-to-line >VA -Hz (No Neutral Available) -Vac line-to-neutralA V A -)Iz (Neumal Available) ( ) iii. c.. Local/remotemonitoringandcontrol j.``. Safetycoderequirements . Three-phase loads "Vat.`.. Single-phase -Vat. User=.. GENERAL PHYSICAL ANDSERVICEREQUIREMENTS Information tobe provided by user. ( ) shock. Source groundinp- 4.`. ( ) moisture.`--- COPYRIGHT 2003...`.-mm -min b. k Size of largest shipping split.. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584.. ( ) other d.. Grounding and isolation requirements h. ( ) i. g.
. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100. . Size and weightof U P S c. a... Power factor capability - e. .. . Restored energy time (Battery recharge time) “minutes c. SUPPLIER DATA 5. Currentcrest factor- 6. a. Characteristics of battery (if not an integral part UofP S ) 1. Size and weight of batteries d. Inrush current_A peak-duration g. Ambienttemperature --`.`.``.duration g. Overload capability -A peak maximum. -kVA d. Typeofcooling COPYRIGHT 2003. End (discharge) voltage -Vdc iii.`. Total harmonic distortion at rated linear load -% h. Unbalanced voltage for balanced and unbalanced load- 7. .. . Configuration drawings including connections and access requirements e.`--- f. GENERALPHYSICAL ANDSERVICEREQUIREMENTS Information to be provided by ups supplier.`.``. Output voltage -Vac -% c.`. a. Stored energy time (Battery run time) -minutes b.```. User=. Harmonic currents (l’ND) -% h. Rated current nominal at voltage -AIX iv. STORED ENERGY Information tobe provided byU P S supplier. a.-`-`. UPSRATEDOUTPUTCHARACTERISTICS Information tobe provided byU P S supplier. .Inputvoltage-Vac -% c.````.. Maximum current end atvoltage -AIX 8. Rated Output power and apparent power-kW. Nominal voltage -Vdc 11.. .Inputcurrent - d. Type of battery . Phase configuration ( ) Single-phase ( ) Three-phase wye ( ) Three-phase delta b. Phase configuration ( ) Single-phase ( ) Three-phase wye ( ) Three-phase delta b... . .`.- d. .Inputpowerfactor- e. . Inputfrequency-& -% f. UPS RATED INPUT CHARACTERISTICS AND POWER REQUIREMENTS Information tobe provided byU P S supplier..Outputfrequency -Hz -% f. U P S losses (heat rejection) BTUM b. Maximum load crest factor capability - i.
. .. or international.``. 7 & 16) Authorized Engineering Information Authorized Engineering Information consists of explanatory data and other engineering information of an informative of hTMA Standard or Suggested Standard for Future Design. pp.p.” These indicate the status of the standard. Adoptive Standard. which have received the affirmative vote the affirmative of at least two-thirds of the Subdivision votes cast in or negative: 1. B COPYRIGHT 2003. and (StandardizationPolicies and Procedures. operating characteristics. Statements incorporating other auxiliary verbs suchas “should. pp. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100.” “Suggested Standard for Future Design.p. Existence of a National Electrical Manufacturers Association Standard does in any respect preclude any member or nonmember from manufacturing or selling products not to the standard.orprocess pmceduE with reference to one or more of the following: nomenclature.-`-`. testing. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584. User=. rating.`. (StandardisationPolicies and Procedures.” or “Adoptive Standard.`. tolerances.```. suggests a sound engineering approachto future development. process. conforming (StandardizationPolicies und Procedures. which relates to a product. safety.`--- National Electrical Manufacturers Association Standardsare of three classes.. either domestic. 3.the The material identifiedas ‘‘Authorized Engineering Information” is designated similarly.. dimensions.p.`. 7 & 16) Identification of Status Standards in NEMA Standards Publications are identified as ‘‘hEMA Standard. A statement incorporatingthe auxiliary verb “shall” indicates that compliance with a requirement is mandatory for compliance with the standard.” “may. I) Definition of a Standard A Standard of the National Electrical Manufacturers Association defines a product.andstatusare sct fonh in certain clauses StandardizationPolicies and Procedures manual and are referenced below: of the hThU Purpose of Standards National Electrical Manufacturers Association Standards are adopted in the public interest and are designedto eliminate misunderstandings between the manufacturer and the purchaser to assist the purchaser in selecting and obtaining and the proper product for their particular needs.`.. (StandardizationPolicies and Procedures. which may not have been regularly to a applied but which commercial product. composition..theirclassification. Suggested Standard for Future Design. NEMA STANDARDIZATION BACKGROUND B The purpose of hEhU Standards. 8) Categories of Standards D --`. alternate dimensions satisfying the otherofprovisions the Standards Publicationmay be capableof otherwise equivalent performance. the service for which theyare designed. 2. or procedure commercially standardized toand repetitive subject manufacture..``.” etc. refer to authorized engineering information and not to procedures required for compliance with the standard. (Standardization Policies and Procedures. These classes of standards are identified in the foreword or throughout text.````.`... 2) Dimensions Where dimensions are given for interchangeability purposes. regional. whichis adopted in whole or in part fromthe ctandards of another organization. which standard character not falling within the classification has received the affirmative vote of at least two-thirds of the Subdivision votes in the castaffirmativeor negative. hEMA Standard. performance.
Palatine. OH45373 Houston. A Division Chloride of Power Electronics. WI 54646 Lorain. NY 14423 Sola Electric Unit Technologies.. OH 44052 Cyberex Inc. NY 10940 Buffalo. Pacific PowerSource Corp. IL 60018 Best Power Technology.. 92626 ElkVillage.`--- COPYRIGHT 2003.. Inc.```. Industrial Division Troy.`.`. CA90509 Santa Ana. Middletown. Grove IL 60007 Emerson Electric Co. National Electrical Manufacturers Association Document provided by IHS Licensee=Aramco HQ/9980755100. Inc. New Jersey07083-8107 Des Plaines.`. Hobart BrothersCo.``.`.. Necedah.`.. Union. Lorain Products-Reliance Co. OH44060 Huntington Beach. CA92449 Networks/UPSystems D Electro Square Co. Mentor. Il 60067 Caledonia. TX 77041 K/W Control Systems Westinghouse Electric Corp. 09/03/2003 22:40:46 MDT Questions or comments about this message: please call the Document Policy Group at 1-800-451-1584..-`-`. Teledyne Inet Industrial Controls Division Torrance.````.. POWER ELECTRONICS SECTION OF THE NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION MEMBER COMPANIES AT&T La Marche ManufacturingCo. . EPE ofSignal General Corp. User=. CA92702 Toshiba International Corp. NY 14240 --`. Costa CAMesa.``... Inc.
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