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READ AND **REMOVE THIS PAGE** BEFORE PLACING

THE SPECIFICATION SECTION IN THE CONTRACT

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[DIVISION 16: ELECTRICAL]{.underline}

SECTION 16206: CONVERTERS

USE: Furnishing and installing a single phase to three phase converter.

**NOTES TO SPECIFIER:**

A. Options within paragraphs are identified by enclosure in brackets;
blank spaces enclosed by brackets \[\_\_\_\_\_\] provide for information
to be inserted, as appropriate, to individual projects.

B. **TO AVOID CONFLICTING REQUIREMENTS AND COSTLY MISTAKES,** the
specifier must edit (delete, substitute or add to the text). The
remaining paragraphs must be renumbered.

C. DELETE FOR FINAL COPY: Notes to the Specifier, located between lines
of asterisks; all \[brackets\], [underlining]{.underline}, **boldface**,
and *italics*, within the paragraphs; and this page. (Open Reveal Codes
\[alt F3\] to do this accurately.)

D. [To Edit "(Footer B)":]{.underline} (Corel 8). **ENTIRE FOOTER SHOULD
BE BOLDED.** Click in the footer and delete the "Project Name (ftr B)"
text and replace it with the **Name of the Project (upper and lower
case)**. Replace date with current MM/YY (WITHOUT BRACKETS).

E. The Guide Specifications are intended to be continuously reviewed and
revised. User's technical comments are appreciated. Also, other related
or similar specification that are written "from scratch" that could
benefit others, or other questions can be sent to NSTC A/E Group, ST
110, or call (303) 987-6868.

**DRAWING DATA REQUIRED:**

**REVISIONS OF THIS SECTION:**

CSI format, editorial changes: 12/01

Metric:

Technical Update: 2/97

**SECTION 16206**

**CONVERTERS**

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

**1.1 SUMMARY**

** A. Section Includes: \[Furnishing\] \[and\] \[installing\] a
\[rotary\] \[static\] type single to three phase converter.**

**1.2 SUBMITTALS**

** A. General: Submittals shall be according to \[Section 01009 -
General Information and Requirements.\] \[Section 01300 - Submittals.\]
\[Section 01365 - Certificates of Conformance.\]**

** B. Manufacturer\'s Literature: Submit \[\_\_\_\_\] copies of the
manufacturer\'s descriptive data for the phase converter to be used on
this project.**

** C. Installation Instructions: Submit \[\_\_\_\_\] copies of the
manufacturer\'s installation instructions for the phase converters to be
used on this project.**

** D. Operating and Maintenance Instructions: Submit \[\_\_\_\_\] copies
of the manufacturer\'s maintenance instructions for the phase converters
to be used on this project.**

** E. Shop Drawings: Submit \[\_\_\_\_\] copies of shop drawings for the
phase converters to be used on this project.**

**1.3 QUALITY ASSURANCE**

** A. Manufacturer Qualifications: The manufacturer shall have parts and
service available to commence correction of any deficiency, within 24
hours after verbal notification by the Contracting Officer, through
factory representatives, franchised dealers, or factory certified
maintenance service shops. **

** B. Labeling Requirements: Phase converters shall be Underwriters
Laboratories Inc., (UL) labeled and listed. UL listing and labeling will
not be required if it can be shown that phase converters meet the
requirements of another nationally recognized testing laboratory
(NRTL).**

** C. Testing Requirements: The three phase currents shall be recorded
for each section of the phase converter after completion of balancing to
obtain the best motor phase current balance possible.**

D. Failure Criteria: Not limited to the following:

**  1. Unsatisfactory operation of converter or motors.**

** 2. Overheating of converter or motors at 20 starts per hour.**

** 3. Excessive ([\>]{.underline} 5%) current unbalance at set point.**

** 4. Excessive starting current ([\>]{.underline} 4 x rated F.L.I.)**

** 5. Excessive starting time ([\>]{.underline} 3 sec.)**

**1.4 WARRANTY**

** A. Requirements: Furnish a written warranty from the manufacturer
covering the phase converter and its component parts according to
Section 01700 - Contract Closeout. The warranty period shall extend for
a minimum of 1 year.**

** B. Uniformity: The warranty for all components of the phase converter
shall be covered by a single manufacturer.**

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

**2.1 MATERIALS**

** A. General: Converters shall be constructed of the manufacturer\'s
standard materials, as listed in published product information; types
and sizes shall be as indicated or as required for the installation.**

**2.2 MANUFACTURED UNITS**

** A. Static Type Converter: Shall utilize an autotransformer and
capacitors to produce symmetrical three phase currents from a single
phase source. It shall include adjustable taps on the autotransformer
and connections to increase or decrease the capacitance to allow full
load current balance within 5 percent. It shall be specially engineered
for use with \[a single motor.\] \[sewage lift station.\] \[duplex pump
installations.\] \[It shall include \[one\] \[two\] independently
adjustable sections, \[one for each associated motor,\] and it shall be
capable of running \[the\] \[each\] motor at full load, independently or
simultaneously without overloading either the converter or the motors.\]
The converter shall provide not less than 150 percent starting torque,
it shall be capable of at least twenty 3-second or ten 6-second starts
per hour, it shall be able to operate in an ambient temperature of -25
degrees F to +110 degrees F, with no-load loss not to exceed 40 watts,
and have an efficiency of 97 percent at full load. Each section of the
converter shall have a mean time between failure (MTBF) of 10,000 hours.
The converter shall be sized by the manufacturer after receipt of
accurate motor data including rated revolutions per minute (rpm) and
full load current (FLI) from the Contractor.\]**

** B. Adjustable Rotary Type Converter: Shall be the adjustable rotary
type built for applications where load voltages and current balances are
critical such as electronic equipment, computers, or specialty motors.
The converters rotary section shall include a rotary transformer with a
tapped winding to allow adjustment of full load currents to within
[+]{.underline} 5 percent of balance. The converter can operate one or
more wye or delta connected motors, of single or variable speed,
reversible or non-reversible, intermittent or continuous duty. The
converter shall allow normal performance of connected motors, normal
starting and 200 percent breakdown torque, and shall not limit the
number of starts per hour above the motor manufacturer\'s
recommendation. Power loss in converter shall not decrease total
efficiency by more than 2 percent at loaded condition. The converter
shall also include non-pcb capacitors in a metal enclosure.**

** C. Standard Rotary Type Phase Converter: Shall be suitable for
multiple motor applications such as those found in small machine shops.
Converter construction includes all copper windings, cast frame, and UL
listed non- pcb capacitors. Control over balancing load current within
[+]{.underline} 15 percent is obtained by connecting or disconnecting
capacitors connected in parallel with the manufactured phase.**

**2.3 SOURCE QUALITY CONTROL**

** A. Testing: The manufacturer will perform the required testing,
recording, and adjusting of the converter at the factory. This shall
include adjustment of autotransformer taps and preliminary setting of
the capacitance based on Contractor provided motor data.**

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

**3.1 INSTALLATION**

** A. General: Install converters as indicated, complying with the
manufactuer\'s written instructions, applicable requirements of codes
and standards, and accordign to recognized industry practices.**

**3.2 FIELD QUALITY CONTROL**

** A. Testing: The Contractor shall conduct the performance and
acceptance tests of the converter and shall adjust the autotransformer
tap and add or remove condensers in each section to obtain the best
possible full load current balance for each motor. The Contractor shall
furnish necessary equipment, labor, and materials to conduct the
testing. Testing shall be conducted in the presence of the Contracting
Officer who shall be given 48 hours notice before any test is to be
conducted and shall include recording of the final balanced three phrase
currents of each motor.**

**[PART 4: MEASUREMENT AND PAYMENT]{.underline}**

**\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\***

**WHEN A \"LUMP SUM\" CONTRACT IS USED, DELETE THE TITLE PART 4:
MEASUREMENT AND PAYMENT, AND BOTH ARTICLES FROM THIS SECTION.
MEASUREMENT AND PAYMENT WILL BE ADDRESSED IN PART 4 OF SECTION 01009 -
GENERAL INFORMATION AND REQUIREMENTS OR SECTION 01010 - SUMMARY OF
WORK.**

**\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\***

**4.1 METHOD OF MEASUREMENT**

** A. Units: The work described in this section will not be measured for
payment.**

**4.2 BASIS OF PAYMENT**

** A. Payment: No direct payment for the work described under this
section will be made. Consideration for this item shall be included in
the bid price for other items of the Contract.**

**END OF SECTION**