Exhibit L - DCF ITB 2223 093-2.pdf

LIQUID-FILLED, MEDIUM-VOLTAGE AR-VFI TRANSFORMER

SECTION 26 12 13.03

26 12 13.03-1 04/04/23

SECTION 26 12 13.03

LIQUID-FILLED, MEDIUM-VOLTAGE AR-VFI TRANSFORMER

PART 1 GENERAL

1.01 SCOPE

A. This specification applies to three-phase, 5,500/6150 kVA, 60 Hz, fully dead front, padmounted transformer. Differential overcurrent protection shall be accomplished utilizing a 24VDC microprocessor-based differential relay paired with a resettable vacuum fault interrupter (VFI) which shall be provided with three-pole ganged operation.

B. The VFI unit is to be used for transformer differential protection & local/remote on/off switch

C. The unit is to be insulated with Envirotemp™ FR3™ less-flammable dielectric fluid. The unit shall utilize vacuum interrupters for all fault current interruption such that the dielectric media is not consumed or contaminated by normal operations of the interrupters. The unit shall be designed for installation on a concrete or fiberglass pad at ground level.

D. The transformer shall use resettable interrupter controls and shall not use expulsion fuses (use of PRCLFs for increased interrupt rating are allowable).

E. This specification shall only cover the purchase and shipment of transformers. The purchaser and/or user shall be responsible for all site-work, electrical connections, and installation at a later date.

1.02 APPLICABLE STANDARDS

A. All characteristics, definitions, and terminology, except as specifically covered in this specification, shall be in accordance with the latest revision of the following IEEE®, Department of Energy, and NEMA® standards.

1. IEEE Std C37.60™-2012 standard – IEEE Standard Requirements for Overhead, Pad- Mounted, Dry Vault, and Submersible Automatic Circuit Reclosers and Fault Interrupters for Alternating Current Systems Up to 38 kV

2. IEEE Std 386™-2016 standard – Standard for Separable Insulated Connector Systems for Power Distribution Systems Above 600 V.

3. IEEE Std C37.90™-2005 standard – IEEE Standard for Relays and Relay Systems Associated with Electric Power Apparatus.

4. IEEE Std C37.90.2™-2004 standard – Standard for Withstand Capability of Relay Systems to Radiated Electromagnetic Interference from Transceivers.

5. IEEE Std C57.12.00™ - 2015 standard – Standard for Standard General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers.

6. IEEE Std C57.12.28™-2014 – Sections 5.3, 5.4, 5.5 – Coating System Requirements

7. IEEE Std C57.12.90™ - 2011 standard – IEEE Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers and IEEE Guide for Short-Circuit Testing of Distribution and Power Transformers.

8. IEEE Std C57.12.91™ standard – Guide for Loading Mineral-Oil-Immersed Transformers.

9. IEEE Std C57.154™ standard – IEEE standard for the design, testing, and application of liquid-immersed distribution, power, and regulating transformers using high-temperature insulation systems and operating at elevated temperatures

10. IEEE Std 1584™ - 2018 – IEEE Guide for performing arc-flash hazard calculations

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11. NEMA TR 1-1993 (R2000) – Transformers, Regulators and Reactors, Table 0-2 Audible Sound Levels for Liquid-Immersed Power Transformers.

12. NEMA 260-1996 (2004) – Safety Labels for Pad-Mounted Switchgear and Transformers Sited in Public Areas.

13. 10 CFR Part 431 – Department of Energy – Energy Conservation Program for Commercial Equipment: Distribution Transformers Energy Conservation Standards; Final Rule.

PART 2 PRODUCTS

2.01 MANUFACTURERS

A. Eaton

B. ABB

2.02 RATINGS

A. The transformer shall be designed in accordance with this specification and the base kVA rating shall be: 5,500/6150 kVA @ 55/65oC.

B. The transformer shall have a high voltage and the basic lightning impulse insulation level (BIL) of 12,470 V and 95 kV BIL

C. The low voltage and the basic lightning impulse insulation level (BIL) shall be 4,160/2,400 V and 60 kV BIL. THE MEDIUM VOLTAGE AND BASIC LIGHTNING IMPULSE INSULATION LEVEL

(BIL) SHALL BE 12,470/7,200 V AND 95 KV BIL.

D. The high voltage and low voltage connections of the transformer shall be:

1. Delta - Grounded Wye

a. For Delta - Grounded Wye configurations the low voltage neutral shall be a fully insulated X0 bushing with ground strap. The low voltage shall lag the high voltage by 30°.

E. The transformer shall be furnished with full capacity high-voltage taps. The tap-changer shall be clearly labeled to reflect that the transformer must be de-energized before operating the tap-changer as required in Section 4.3 of IEEE Std C57.12.34™-2009 standard. The tap-changer shall be operable on the higher voltage only for transformers with dual high voltages. The unit shall have one of the following tap configurations:

1. Two – 2 ½% taps above and below rated voltage (split taps)

F. The dielectric coolant shall be listed less-flammable fluid meeting the requirements of National Electrical Code® Section 450-23 and the requirements of the National Electrical Safety Code® (IEEE Std C2™-2002 standard), Section 15. The dielectric coolant shall be non-toxic*, non-bioaccumulating and be readily and completely biodegradable per EPA OPPTS 835.3100. The base fluid shall be 100% derived from edible seed oils and food grade performance enhancing additives. The fluid shall not require genetically altered seeds for its base oil. The fluid shall result in zero mortality when tested on trout fry *. The fluid shall be certified to comply with the US EPA Environmental Technology Verification (ETV) requirements and tested for compatibility with transformer components. The fluid shall be Factory Mutual Approved®, UL® Classified Dielectric Medium (UL-EOUV) and UL® Classified Transformer Fluid (UL-EOVK), Envirotemp™ FR3™ fluid.

*(Per OECD G.L. 203)

G. The transformer, filled with Envirotemp™ FR3™ fluid, shall have a:

1. 55/65°C average winding temperature rise rating. The above winding temperature rise shall not exceed 55°C when loaded at base kVA rating. The transformer shall provide an

26 12 13.03-3 04/04/23 additional 12% continuous operating capacity at the 65°C rating. This transformer is identified as a PEAK transformer.

H. The percent impedance voltage, as measured on the rated voltage connection, shall be per Table 5 of IEEE Std C57.12.36™-2017 standard.

I. The transformer shall be cooled by the natural circulation of air over the tank surface and any corrugate or radiators if required, allowing only the base kVA rating shall be provided with Class

KNAN

J. UL® Listing/Classification and FM® Approval

1. The transformer shall be UL® Listed (certifying compliance with IEEE® standards only) per

UL® XPLH.

2.03 CONSTRUCTION

A. The core and coil shall be vacuum processed to ensure maximum penetration of insulating fluid into the coil insulation system. While under vacuum, the windings will be energized to heat the coils and drive out moisture, and the transformer will be filled with preheated filtered degassed insulating fluid. The core shall be manufactured from burr-free, grain-oriented silicon steel and shall be precisely stacked to eliminate gaps in the corner joints. The coil shall be insulated with B-stage, epoxy coated, diamond pattern, insulating paper, which shall be thermally cured under pressure to ensure proper bonding of conductor and paper.

B. Panel type radiators or corrugated type cooling are welded directly to the tank when additional cooling is required.

C. The tank must be welded using precision cut, cold-rolled steel plate and equipped with extra-heavy duty, welded-in-place lifting lugs and jacking provisions. The tank base must be designed to allow skidding or rolling in any direction.

D. The transformer shall be of sealed tank construction of sufficient strength to withstand a pressure of 7 psig without permanent distortion, and 15 psig without rupturing.

E. The tank shall include a pressure relief device as a means to relieve pressure in excess of pressure resulting from normal operation. The venting and sealing characteristics shall be as follows:

1. Cracking Pressure: 10 psig +/-2 psig

2. Resealing Pressure: 6-psig minimum

3. Zero leakage from reseal pressure to -8 psig

4. Flow at 15 psig: 50 SCFM minimum

F. The tank shall be cleaned with an alkaline cleaning agent to remove grease and oil. An iron phosphate coating shall then be chemically bonded to the metal to assure coating adhesion and retard corrosion. The tank shall be primed with an electrodeposited powder epoxy to provide a barrier against moisture, salt, and corrosives. The top-coat shall be a liquid polyurethane coating to seal and add ultraviolet protection. The tank coating shall meet all requirements in IEEE Std C57.12.28™-2014 standard.

G. The transformer shall be padmount design with the high voltage terminations enclosed as follows:

1. Full height, bottom entry cabinet

a. A full height bottom entry air terminal chamber is a weather-resistant metal enclosure with sidewall mounted dead break bushings. It is intended for underground feed and is provided with facilities for distribution arresters. A hinged door with pentahead bolt interlocked with the secondary door.

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b. The low voltage terminations shall each be enclosed with the following:

2. Full height, bottom entry cabinet

a. A full height bottom entry air terminal chamber is a weather-resistant metal enclosure around sidewall mounted bushings. A hinged door with padlockable handle.

b. The tank shall be complete with an anodized aluminum laser engraved nameplate. This nameplate shall meet IEEE Std C57.12.00™-2010 standard for Nameplate B.

H. High voltage bushings and terminals

1. The transformer shall be provided with six (6) sidewall mounted 15 kV bushings, 600 amp dead-break for deadfront application and arranged for loop feed configuration.

I. Low voltage bushings and terminals

1. The low voltage bushings shall be sidewall-mounted. Low voltage bushings shall be electrical grade wet process porcelain. The low voltage bushings shall be located in the segment opposite of the specified high-voltage configuration and be rated 900A, 5kV for deadfront application.

J. Overvoltage Protection

1. The overvoltage protection scheme provided with the transformer shall consist of one of the following attributes. If for any reason a special protection scheme is required it shall be clearly stated on the inquiry

a. Primary overvoltage protection shall consist of elbow type MOVE arresters in conjunction with deadfront bushing wells and inserts.

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2.04 INTEGRAL VACUUM FAULT INTERRUPTER

A. Ratings

1. The switchgear shall be rated* 15 kV, 16 kA as follows:

Nominal Voltage 15 kV Maximum Design Voltage, kV 15.5 BIL, kV 95 1-Minute Withstand Voltage (60 Hz), kV 35 Momentary Current, 10 Cycles (sym.), kA 16.0 3-second Withstand Current (sym.), kA 16.0

Continuous Current, (max), A 900 Interrupting Current (sym./asym.) 16/25.8 Making Current (sym.), kA 16.0

Fault Interrupter

Cable Charging Interrupting Current, A 10.0 Continuous Current, (max), A 600 Load Switching, A 600Load-Break Switch Fault Making, kA (sym./asym.) 16/25.8

Minimum Full Life Fault Interrupting Duty Cycle per IEEE Std C37.60™-2003 standard (2 duty cycles)

Number of Operations

Percent of Interrupting Current Rating: 15-20% 88

45-55% 112

90-100% 32

Total 232

* Continuous and short-circuit currents may be limited by ratings of selected bushings.

B. Vacuum Fault Interrupters

1. The transformer shall incorporate a vacuum fault interrupter for overcurrent protection, such that the major dielectric media is never contaminated by circuit interruption arc products. The interrupter shall be manually resettable, with no consumable parts (i.e. fuses). The maximum interrupting time from issuance of a trip signal from the electronic control shall be 2 cycles.

2. The vacuum fault interrupter may be tripped via the incorporated relay control by sensing anomalies in the system provided there is adequate sensing equipment also incorporated into the transformer. That is, the VFI may be tripped (opened) in the event of anomalies such as, but not limited to, overcurrent, over/undervoltage, over temperature, over pressure, under frequency, etc. provided the appropriate associated devices are also incorporated into the transformer (i.e. potential transformers, thermometers, pressure relief devices, transducers, etc.) and the appropriate relay control is selected.

3. To maximize safety to the operator, the interrupter shall incorporate a trip-free mechanism to prevent the possibility of holding the interrupter mechanism closed under a faulted circuit condition.

4. The vacuum fault interrupter shall act as a three-phase group operated circuit breaker. The trip mechanisms for each phase shall be mechanically linked and the electronic control shall

26 12 13.03-6 04/04/23 be set so that an overcurrent condition on any one phase shall simultaneously trip all three phases. A single operating handle shall be provided for manual opening, reset and closing.

The operating handle(s) shall be mounted on the front plate of the tank in close relation to the VFI being controlled and shall have three distinct operating positions corresponding to the vacuum fault interrupter positions of closed, open, or tripped. A pointer attached to the handle shall be provided for ready identification of the handle’s position. The handle shall be designed for operation with a lineman’s hot stick and have a push to close / pull to open / pull to reset operation requiring no more than 75 lbs. of force and 60 degrees of movement for complete operation. Except when equipped with the optional motor operator, when the vacuum fault interrupter is tripped by automatic action of the VFI control, the operating handle shall drop to an intermediate position between its closed and open positions, to provide indication that it is tripped. The operating handle assembly shall include provisions to padlock the handle in the open position.

C. Electronic Trip Control

1. The protective relays for the transformer protection shall be a single multifunction, microprocessor-based relay that incorporates restrained differential protection for two windings with fixed or variable percentage, using one or two settable slopes with adjustable intersection points and minimum pickup.

2. The relay shall be Schweitzer SEL 787 or approved equal differential relay having all, but not limited to, the features and functions herein specified.

3. Relay shall be wired to directly trip the VFI mechanism.

4. The relay shall be a solid-state microprocessor-based multifunctional type that operates from a 5 ampere or 1 ampere secondary output of current transformers. The relay shall provide ANSI 50/51 protective functions, and ANSI 50/51N or 50/51G ground fault protection functions for each secondary winding. The relay shall be configurable between true rms or fundamental sensing for each phase and ground. Ground element shall be capable of being utilized in residual, zero sequence, ground source connection schemes, or deactivated.

5. The current transformer ratings being used for percentage restraint differential protection, phase, negative sequence, and ground protection feeding the device shall be programmable for current transformers with primary current ratings from 1 through 10,000 amperes

6. Provide phase and ground (as applicable) CT’s on transformer secondary. CTs will be connected to transformer relay via test switches within control cabinet. The LV Phase CT ratio shall be 1500:5 C200 Multi-ratio (1 CT per phase) under oil. The Neutral CT shall be 1500:5 C200 Multi-ratio, under oil.

7. Provide phase and ground (as applicable) CT’s on transformer primary. CTs will be connected to transformer relay via test switches within cabinet. CT ratio shall be 500:5 C200 Multi-ratio (1 CT per phase), under oil.

8. Control cabinet will be equipped with ABB FT-1 type test switches as needed for application or approved equal. Test switches shall be provided for all primary CTs and PTs.

9. Control cabinet will be supplied with terminal block for customer connections.

10. Control cabinet will be supplied with 120V supplied by 120VAC from internal CPT and 12VDC from cabinet mounted 12V battery capable of 24hour back up. Provide connection point for future external 120V source and disconnect for internal control power circuit.

11. Control cabinet to include heater powered by 120V internal circuit.

12. Control cabinet will be NEMA 4X, UL listed, 100% stainless steel box

13. The relay shall provide, but is not limited to, the following protection devices:

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a. Percentage Restrained Differential Protection (87). The relay shall incorporate restrained differential protection for two windings with fixed or variable percentage, using one or two settable slopes with adjustable intersection point and minimum pickup values.

b. Harmonic Elements. The relay shall incorporate second-, fourth-, and fifth-harmonic elements, with the choice of temporarily or permanently desensitizing the differential protection to prevent restrained differential element operation during inrush or overexcitation conditions; it shall be possible to set the fifth-harmonic element to warn user of overexcitation condition.

c. Unrestrained Differential Protection (87H). The relay shall include unrestrained differential protection to produce rapid tripping for severe internal faults.

d. Ground Differential Protection (87GD) or Restricted Earth Fault Protection (REF). The relay shall incorporate restricted earth fault protection for the detection of ground faults in wye-connected windings.

e. Phase overcurrent (50/51): Four inverse time overcurrent (51-1, 51-2, 51-3, 51-4) functions and four instantaneous overcurrent (50-1, 50-2, 50-3,50-4) functions with adjustable time delay. Each element can be assigned to either side of the transformer.

f. Ground overcurrent (50R/51R): Two inverse time overcurrent (51R-1, 51R-2) functions and two instantaneous overcurrent (50R-1, 50R-2) functions from calculated values with adjustable time delay. Each element can be assigned to either side of the transformer.

g. Ground overcurrent (50X/51X): Two inverse time overcurrent (51X-1, 51X-2) functions and two instantaneous overcurrent (50X-1, 50X-2) functions from measured values with adjustable time delay. Each element can be assigned to either side of the transformer.

h. The phase, negative sequence, and ground protection curves shall be independently field-selectable. Curves shall be selectable from the following:

i. IEEE: Moderately inverse, very inverse, extremely inverse

j. IEC: A, B, C or D

k. Thermal: Flat, lt, I2t, I4t

14. The relay shall have 8 contact outputs that may be programmed for any protection function operation output.

15. The relay shall have a front panel display of relay condition, and 14 programmable LEDs that can be used for trip condition or breaker status.

16. The relay shall have a LCD display with LED background illumination capable of displaying the following information with metering accuracy of +/- half (0.5) percent of measured value

(ln) for ln < 2 ln and +/- one (1) percent of measured value (ln) for ln > 2:

17. Relay will be able to measure the following values from the transformer (*voltage and power measurements require inclusion of PTs and PT inputs):

a. Individual RMS and fundamental phase currents

b. Ground RMS and fundamental current

c. Phase-to-ground and phase-to-phase voltages with phase angles

d. Watts

e. Vars

f. VA

g. Frequency

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h. Power factor – apparent and displacement

i. Minimum/maximum values of current, voltage, watts, vars, VA, frequency, apparent pf and displacement pf

j. phase angles

18. Relay shall have the following features:

a. Trip coil-monitoring and IRIG-B.

b. Zone selective interlocking capability.

c. Real-time clock for stamping of events, trips and minimum/maximum values with 1ms time resolution or better.

d. User interface for programming and retrieving data from the front of the unit without additional equipment.

e. Eight (8) contact inputs that are user programmable.

f. Continuous self-testing of internal circuitry, self-diagnostic capability.

g. Programmable lockout/self-reset after trip function (86 lockout).

h. Programmable set points for device curve selection.

i. Programmable inputs, such as current transformer ratios.

j. Relay shall be suitable for operating temperatures from -20 degrees to 60 degrees C.

Relay shall be suitable for operating with humidity from 0 to 95% relative humidity.

19. Relay shall record information on the last 20 faults including:

a. Date, time, and currents at the time of fault.

b. Relay shall record 3600 cycles of waveform data for the current.

c. Relay shall record the last 300 events into an event log with date and time stamping.

20. Relay shall have the following communications ports available if specified:

a. Rear communications port(s) that support: IEC61850, Modbus TCP, and DNP3.0 TCP via RJ-45 connector.

b. Fiber port for Ethernet.

c. A USB front communication port for programing and interrogation of the relay via personal or laptop computer.

d. Communication ports shall have the ability to transmit all information contained in the relay such as currents, set points, cause of trip, magnitude of trip current, and open-close trip status over the connected network.

21. Relay trip contacts shall not change state if power is lost or an undervoltage occurs. These contacts shall only cause a trip upon detection of an overcurrent or fault condition based upon programmed settings

22. The relay shall be suitable for operating on control power with a nominal input voltage of

124VAC.

23. The Relay shall be fully programmable through the face of the relay. In addition, a means to be able to program the relay through a communication port needs to be provided.

24. Meet the specified time-current curve immediately upon energization.

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25. No “warm-up”, initialization, or arming time delays adjustments shall be necessary.

26. No minimum load requirement or battery back-up device shall be necessary to meet the specified time-current characteristics.

27. Surge protection shall be provided for the relay.

D. VFI Optional Features (to be provided)

1. Open/Closed Semaphores

a. When specified, an Open (green) /Closed (red) mechanical semaphore shall be provided and shall indicate the open or closed status of the vacuum fault interrupter. The semaphore shall be visible through a window on the tank in direct logical proximity to the operating handle of its fault interrupter. Semaphore is provided as standard with motor operator kit.

2. Auxiliary Switches

a. The VFI shall be provided with two extra sets of stage “a” and “b” auxiliary switches for the purpose of remote indication of status. These auxiliary switches shall be rated for 15-amps @ 120-Vac / 1-amp @ 125-Vdc and wired to an external terminal strip.

2.05 ACCESSORIES (to be provided)

A. The following standard accessories shall be provided:

1. De-energized tap-changer

2. 1.0” upper fill plug with filter press connection

3. 1.0” drain valve with sampling device

4. Cover-mounted automatic pressure relief device

5. Welded cover with bolted manhole

6. Lifting lugs (4)

7. Liquid level gauge

8. Dial type thermometer

9. Pressure/vacuum gauge

10. SS ground pads (4)

11. Nitrogen blanket with purge valve

12. Touch-up paint (2 aerosol cans)

13. Schrader Valve

B. The following optional accessories shall be provided:

1. Bleeder valve

2. NEMA® 4 control box

3. Auxiliary contacts for liquid level gauge

4. Auxiliary contacts for pressure/vacuum gauge

5. Pressure Relief Valve

6. Control box for SEL 787 Relay

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7. Test/Shorting CT blocks for 787 Replay (primary and secondary)

8. Test PT blocks for 787 Relay (primary and secondary)

9. Internal CTs on primary and secondary side for relaying

10. Internal Control Power Transformer with internal fuses and external On/Off switch

11. 15 kV Vacuum Fault Interrupter on primary side of transformer

12. Stainless Steel Name Plate.

C. Special Features

1. The following special features may be provided if specified:

2. Dead front HV termination

a. Loop feed

b. 25kV, 600A HV bushing well with 15kV insert.

c. Parking Stands

3. Dead front LV termination

a. 5kV, 600A LV bushing well with 5kV insert.

4. Cooling

a. Mild steel radiators

1) Welded

5. Positive nitrogen pressure oil preservation system (5 PSI)

6. Current transformers for relaying/metering

D. Optional transformer evaluation

1. No unit evaluation but include quote losses as reference only on bid.

2.06 FINISH PERFORMANCE REQUIREMENTS

A. The tank coating shall meet all requirements in IEEE Std C57.12.28™-2014 standard including:

1. Salt Spray

2. Crosshatch adhesion

3. Humidity

4. Impact

5. Oil resistance

6. Ultraviolet accelerated weathering

PART 3 EXECUTION

3.01 PRODUCTION TESTING

A. All units shall be tested for the following:

1. Ratio, polarity and phase relation tests using all tap settings

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2. Winding resistance measurement tests on primary windings in each de-energized tap-changer position. Measure the resistance of the secondary winding in each de-energized tap-change position.

3. Insulation power factor

4. Full wave and reduced wave impulse test

5. Applied and Induced potential tests

6. No-Load losses at rated current

7. Total losses at rated current

8. Percent impedance at rated current

9. Excitation current (100% voltage) test

10. Leak test

11. Sweep frequency response analysis test

B. Transformers shall conform to efficiency levels for liquid immersed distribution transformers, as specified in the Department of Energy ruling “10 CFR Part 431 Energy Conservation Program:

Energy Conservation Standards for Distribution Transformers; Final Rule; April 18, 2013.”

Manufacturers shall comply with the intent of all regulations set forth in noted ruling (commonly referred to as DOE 2016).

C. The manufacturer shall provide certification upon request for all design and other tests listed in IEEE Std C57.12.00™-2010 standard, including verification that the design has passed short circuit criteria per IEEE Std C57.12.00™-2010 and IEEE Std C57.12.90™-2010 standards.

3.02 SHIPPING

A. Transformers shall be loaded and unloaded at customer site with overhead cranes. No pallet shall be provided. Both loading and unloading shall be part of the transformer pricing.

B. The transformer shall be delivered to the Florida State Hospital site in Chattahoochee, Florida.

Specific site location shall be provided by the Florida Agency (FL Department of Children & Families) responsible for the facility.

C. A suitable crane shall be supplied as part of this proposal and coordinated with the delivery. A lift plan shall be submitted and approved by the engineer prior to delivery. The Lift Plan shall specifically include the crane specifications being used. The Lift Plan due nine (9) weeks prior to delivery. The transformer will be off-loaded from the transport to an existing pad. The location of the pad shall be supplied by the State of Florida prior to delivery.

3.03 DATA WITH PROPOSAL

A. The following data shall be submitted with the proposal:

1. Core losses.

2. Winding losses.

3. Percent impedance.

4. Typical bid drawing

B. The following data shall be submitted with the proposal:

1. Exciting Current @ 100% and 110% rated Voltage.

2. Efficiencies must be provided at loading levels of 100%, 75%, 50%, and 25%.

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3.04 DRAWINGS

A. The following will be provided after receipt of order:

1. Approval drawings

2. CAD drawings

3.05 TESTING

A. The insulating fluid test shall either be performed at the factory (certified) or after delivered and the cost of the test included in this proposal. Testing shall be accordance with ASTM D 923 include the following:

1. Dielectric breakdown voltage: ASTM D877 and/or ASTM D 1816.

2. Water in insulating liquids: ASTM D 1533.

3. Color: ANSI/ASTM D 1500.

4. Dissolved Gas Analysis: ANSI/IEEE C57.104 or ASTM D 3612.

3.06 SERVICE

A. The manufacturer of the transformer shall have regional service centers located within 2 hours flight time of all contiguous 48 states. Service personnel shall be factory trained in commissioning and routine service of quoted transformers.

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