July 22, 1994

Contract #TW0592

**SPECIAL SPECIFICATION**

**SECTION 16631**

**[CENTRAL BATTERY INVERTER SYSTEMS]{.underline}**

**[PART 1 - GENERAL]{.underline} [Page]{.underline}**

1.01 Related Documents 2

1.02 Summary 2

1.03 Submittals 2

1.04 Quality Assurance 3

1.05 Warranty 3

**[PART 2 - PRODUCTS]{.underline}**

2.01 Manufacturers 4

2.02 Central Battery Inverter System 4

2.03 Finish 5

2.04 Concrete Bases 5

**[PART 3 - EXECUTION]{.underline}**

3.01 Concrete Bases 6

3.02 Installation 6

3.03 Identification 6

3.04 Field Quality Control 6

3.05 Cleaning 7

3.06 Demonstration 7

**SPECIAL SPECIFICATION**

**SECTION 16631**

**[CENTRAL BATTERY INVERTER SYSTEMS]{.underline}**

**[PART 1 - GENERAL]{.underline}**

**1.01 [RELATED DOCUMENTS]{.underline}**

> A. Drawings and general provisions of Contract, including General and
> Supplementary Conditions and Division 1 Specification Sections, apply
> to this Section.
>
> B. Requirements of the following Division 16 Sections apply to this
> Section:
>
> 1\. \"Basic Electrical Requirements.\"
>
> 2\. \"Basic Electrical Materials and Methods.\"

**1.02 [SUMMARY]{.underline}**

> A. This Section includes a battery source packaged with battery
> charger, inverter, transfer switch, and automatic control and
> protective devices to provide an integrated system.

**1.03 [SUBMITTALS]{.underline}**

> A. General: Submit the following in accordance with Conditions of
> Contract and Division 1 Specification Sections.
>
> B. Product data for products specified in this Section. Include
> dimensions and data on features and components. Include wiring
> diagrams and elevation view of front panel showing control and
> indicating devices. Include data on ratings.
>
> C. Maintenance data for products for inclusion in \"Operating and
> Maintenance Manual\" specified in Division 1 and in Division 16
> Section \"Basic Electrical Requirements.\"
>
> D. Record of Field Tests: Covering tests required by Article 700 of
> the National Electrical Code and Part 3 of this Section.
>
> E. Special Project warranties specified in this Section.

**1.04 [QUALITY ASSURANCE]{.underline}**

> A. Components and Installation: Comply with NFPA 70, National
> Electrical Code.
>
> B. Listing and Labeling: Provide products specified in this Section
> that are listed and labeled.
>
> 1\. The Terms \"Listed\" and \"Labeled\": As defined in the National
> Electrical Code, Article 100.
>
> 2\. Listing and Labeling Agency Qualifications: A \"Nationally
> Recognized Testing Laboratory\" (NRTL) as defined in OSHA Regulation
> 1910.7.
>
> C. Comply with UL 924, Standard for Emergency Lighting and Power
> Equipment.

**1.05 [WARRANTY]{.underline}**

> A. Special Project Warranty: A written warranty, mutually executed by
> the manufacturer and the Installer, agreeing to replace central
> battery inverter systems that fail in materials or workmanship within
> the special project warranty period specified below. This warranty
> shall be in addition to, and not a limitation of, other rights and
> remedies the Owner may have under the Contract Documents.
>
> B. Special Project Warranty Period: 10 years beginning on the date of
> Substantial Completion. A full warranty shall apply for the first year
> of the period, and a pro rata warranty for the last 9 years.

**PART 2 - [PRODUCTS]{.underline}**

**2.01 [MANUFACTURERS]{.underline}**

> A. Available Manufacturers: Subject to compliance with requirements,
> manufacturers offering products that may be incorporated in the Work
> include, but are not limited to, the following:
>
> B. Manufacturers: Subject to compliance with requirements, provide
> products by the following:
>
> 1\. Exide Electronics, Inc.

**2.02 [CENTRAL BATTERY INVERTER SYSTEM]{.underline}**

> A. Description: Powerware System 50 Model 40. A factory-fabricated
> unit that uses an integral battery source, input filter, an inverter
> with a maintenance bypass switch, and automatic control and switching
> to provide both normal and emergency or standby electrical supply for
> alternating current branch circuit loads.
>
> B. Operation: System normally supplies power to output circuits from a
> single external normal supply source for the system. When the normal
> power source fails, the system automatically transfers from the normal
> source to the internal battery source and reenergizes and feeds output
> circuits through the inverter. When normal power is restored, the load
> automatically retransfers to the normal supply, and the battery is
> recharged.
>
> C. Multiple Output Voltages: System shall supply branch circuits at
> 480/277V voltage levels as indicated. Voltages shall be transformed
> internally from 480V 3 phase 3 wire as required to produce indicated
> output voltages.
>
> D. Provide capacity and voltage ratings as indicated. Indicated
> capacity ratings applyboth to 100-percent tungsten lamp load and
> 100-percent low-power-factorfluorescent lamp ballast load.
>
> E. Enclosure: NEMA Type 1 steel cabinet. Provide access to components
> through hinged doors with flush tumbler lock and catch.
>
> F. Inverter: Solid-state type with features including:
>
> 1\. Output voltage automatically regulated to within plus or minus 2
> percent, and output frequency regulated to within plus or minus 1 Hz,
> from no load to full load at unity power factor over the operating
> range of the battery voltage.
>
> 2\. Total Conversion Efficiency: 75 percent, minimum.
>
> 3\. Output Wave Form: Sine wave with maximum 10-percent total harmonic
> distortion throughout the battery operating voltage range, at unity
> power factor, from 50-percent capacity load to full load.
>
> G. Protection: Automatic, 130-percent current-limiting, short-circuit
> protection and fail-safe start-up protection for inverter. Automatic
> low-battery-voltage shutdown, reverse input polarity protection, and
> separate overload and short-circuit protection for input power circuit
> and control circuit.
>
> H. Battery Charger: Solid-state, automatic, three-charging-rate type
> with minimum charger efficiency of 85 percent. Include controls that
> automatically apply an equalizing charge to the battery every 90 days.
>
> I. Battery: Sealed lead-calcium type designed for maintenance-free
> operation, including no addition of water for the service life of the
> battery.
>
> J. Instrumentation and Controls: Include ready-normal power \"on\"
> light, \"charge\" light, \"inverter supply load\" light, battery
> voltmeter, a.c. output voltmeter, load ammeter, and test switch to
> simulate a.c. failure. Provide meters with 2-percent accuracy.
>
> K. Batteries shall provide a minimum of 15 minutes of back-up power at
> 100% load.
>
> L. Provide input circuit Breaker rated at 125% of maximum AC output
> current.

**2.03 [FINISH]{.underline}**

> A. Cabinet: Manufacturer\'s standard baked-enamel finish over
> corrosion-resistant prime treatment.

**2.04 [CONCRETE BASES]{.underline}**

> A. Concrete: Portland cement, mix to a 4000-psi, 28-day compressive
> strength.
>
> 1\. Cement: ASTM C 150, Type I.
>
> 2\. Fine Aggregate: ASTM C 33, sand.
>
> 3\. Coarse Aggregate: ASTM C 33, crushed gravel.
>
> B. Reinforcement Fabric: ASTM A 185, welded-wire fabric, plain.
>
> C. Reinforcement Bars: ASTM A 615, Grade 60, deformed.

**[PART 3 - EXECUTION]{.underline}**

**3.01 [CONCRETE BASES]{.underline}**

> A. Construct concrete equipment bases of dimensions indicated.
>
> B. Form concrete bases having permanent steel frame, using steel
> channels conforming to ASTM A 36, size and location as indicated.
> Miter and weld corners and provide cross bracing. Anchor or key to
> floor slab.
>
> C. Install reinforcing bars, tied to frame, and place anchor bolts and
> sleeves using manufacturer\'s installation template.
>
> D. Form concrete bases using framing lumber with form-release
> compounds. Chamfer top edges and corners.
>
> E. Install reinforcing bars and place anchor bolts and sleeves using
> manufacturer\'s installation template.
>
> F. Place concrete and allow to cure before installation of equipment.
>
> G. Clean exposed steel frames and apply 2 coats of rust-preventative
> metal primer and 2 coats of exterior, gloss, alkyd enamel in color
> selected by the Architect.

**3.02 [INSTALLATION]{.underline}**

> A. Manufacturer\'s Field Services: Arrange and pay for the services of
> a factory-authorized service representative to supervise the
> installing, connecting, testing, and adjusting of the unit.
>
> B. Clearance: Minimum 36 inches in front of unit and additional side
> and rear clearance if required by manufacturer\'s installation
> instructions.

**3.03 [IDENTIFICATION]{.underline}**

> A. Identify system and components in accordance with Division 16
> Section \"Electrical Identification.\"

**3.04 [FIELD QUALITY CONTROL]{.underline}**

> A. Tests: Under supervision of factory-authorized service
> representative, test all system functions, operations, and protective
> features. Adjust to ensure operation is in accordance with
> specifications. Perform tests required by the National Electrical
> Code, Article 700. Perform the following tests upon completion of
> installation of system and after building circuits have been energized
> from normal power source.
>
> 1\. Simulation of malfunctions to verify protective device operation.
>
> 2\. Provision of instruments as required to make positive observation
> of test results.
>
> 3\. Tests of duration of supply on emergency, demonstrations of
> low-battery-voltage shutdown, and transfers due to normal source
> failure and restoration.
>
> B. Retest: Correct deficiencies identified by tests and observations
> and retest until specified requirements are met.

**3.05 [CLEANING]{.underline}**

> A. Upon completion of installation, inspect system components. Remove
> paint splatters and other spots, dirt, and debris. Touch up scratches
> and mars of finish to match original finish. Clean unit internally
> using methods and materials recommended by manufacturer.

**3.06 [DEMONSTRATION]{.underline}**

> A. Training: Arrange and pay for the services of a factory-authorized
> service representative to demonstrate adjustment, operation, and
> maintenance of the system and to train Owner\'s personnel, for a
> minimum of 5 working days.
>
> B. Conduct a minimum of 2 hours of training as specified under
> \"Instructions to Owner\'s Employees\" in the \"Project Closeout\"
> Section of these specifications.
>
> C. Schedule training with at least seven working days advance
> notification.

END OF SECTION