Attachment_1._SABER_Specifications_Part6.pdf

3.5.2 Field Dielectric Tests

3.5.2.1 Perform field dielectric tests on medium-voltage switchgear according to IEEE C37.20.2 or IEEE C37.20.3 as applicable.

3.5.3 Follow-Up Verification

3.5.3.1 Upon completion of acceptance checks, settings, and tests, the Contractor shall show by demonstration in service that circuits and devices are in good operating condition and properly performing the intended function. Circuit breakers shall be tripped by operation of each protective device. Test shall require each item to perform its function not less than three times. As an exception to requirements stated elsewhere in the contract, notify the Contracting Officer 10 working days in advance of the dates and times for checks, settings, and tests.

END OF SECTION 26 11 13.00 20

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SABER Specifications

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Attachment 1 20 May 2014

SECTION 26 11 16

SECONDARY UNIT SUBSTATIONS

PART 1 GENERAL

1.1 REFERENCES

1.1.1 The publications listed below form a part of this specification to the extent referenced. The publications are referred to in the text by the basic designation only. Unless other wise noted, the latest published version and/or revision shall be used.

1.1.1.1 ACI INTERNATIONAL (ACI)

a. ACI 318M Metric Building Code Requirements for Structural Concrete and Commentary

1.1.1.2 AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)

a. ANSI C39.1 Requirements for Electrical Analog Indicating Instruments

b. ANSI C57.12.13 Conformance Requirements for Liquid-Filled Transformers

1.1.1.3 ASTM INTERNATIONAL (ASTM)

a. ASTM A 123 Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products

b. ASTM A 153 Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware

c. ASTM A 167 Standard Specification for Stainless and Heat-Resisting Chromium-Nickel Steel Plate, Sheet, and Strip

d. ASTM A 653 Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process

e. ASTM A 780 Standard Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized Coatings

f. ASTM C 260 Standard Specification for Air-Entraining Admixtures for Concrete

g. ASTM D 117 Standard Guide for Sampling, Test Methods, Specifications and Guide for Electrical Insulating Oils of Petroleum Origin

h. ASTM D 1535 Specifying Color by the Munsell System

i. ASTM D 3487 Standard Specification for Mineral Insulating Oil Used in Electrical Apparatus

j. ASTM D 709 Laminated Thermosetting Materials

k. ASTM D 877 Standard Test Method for Dielectric Breakdown Voltage of Insulating Liquids Using Disk Electrodes

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l. ASTM D 92 Standard Test Method for Flash and Fire Points by Cleveland Open Cup Tester

m. ASTM D 97 Pour Point of Petroleum Products

1.1.1.4 FM GLOBAL (FM)

a. FM P7825 Approval Guide

1.1.1.5 INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)

a. IEEE C2 National Electrical Safety Code

b. IEEE C37.121 American National Standard for Switchgear Unit Substations Requirements

c. IEEE C37.20.3 Metal-Enclosed Interrupter Switchgear

d. IEEE C37.90.1 Surge Withstand Capability (SWC) Tests for Relays and Relay Systems Associated with Electric Power Apparatus

e. IEEE C57.12.00 Standard General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers

f. IEEE C57.12.01 General Requirements for Dry-Type Distribution and Power Transformers Including Those with Solid-Cast and/or Resin- Encapsulated Windings

g. IEEE C57.12.29 Pad-Mounted Equipment - Enclosure Integrity for Coastal Environments

h. IEEE C57.12.50 Sealed Dry-Type Distribution Transformers 1 to 500 kVA, Single-Phase; and 15 to 500 kVA, Three-Phase with High- Voltage 601 to 34 500 Volts, Low-Voltage 120 to 600 Volts

i. IEEE C57.12.51 Ventilated Dry-Type Power Transformers, 501 kVA and Larger, Three-Phase, with High-Voltage 601 to 34 500 Volts, Low- Voltage 208Y/120 to 4160 Volts

j. IEEE C57.12.80 Standard Terminology for Power and Distribution Transformers

k. IEEE C57.12.90 Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers

l. IEEE C57.12.91 Test Code for Dry-Type Distribution and Power Transformers

m. IEEE C57.124 Recommended Practice for the Detection of Partial Discharge and the Measurement of Apparent Charge in Dry-Type Transformers

n. IEEE C57.13 Standard Requirements for Instrument Transformers

o. IEEE C57.98 Guide for Transformer Impulse Tests

p. IEEE C62.11 Standard for Metal-Oxide Surge Arresters for Alternating Current Power Circuits (>1kV)

q. IEEE Std 100 The Authoritave Dictionary of IEEE Standards Terms

r. IEEE Std 386 Standard for Separable Insulated Connector Systems for Power Distribution Systems Above 600V

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Attachment 1

1.1.1.6 INTERNATIONAL ELECTRICAL TESTING ASSOCIATION (NETA)

a. NETA ATS Acceptance Testing Specifications

1.1.1.7 NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

a. NEMA C12.1 Electric Meters; Code for Electricity Metering

b. NEMA C12.10 Physical Aspects of Watthour Meters

c. NEMA C12.4 Mechanical Demand Registers

d. NEMA ICS 6 Standard for Industrial Controls and Systems Enclosures

e. NEMA LI 1 Industrial Laminated Thermosetting Products

f. NEMA ST 20 Standard for Dry-Type Transformers for General Applications

1.1.1.8 NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

a. NFPA 70 National Electrical Code

1.1.1.9 ORGANIZATION FOR ECONOMIC CO-OPERATION AND DEVELOPMENT (OECD)

a. OECD Test 203 Fish Acute Toxicity Test

1.1.1.10 U.S. ENVIRONMENTAL PROTECTION AGENCY (EPA)

a. EPA 600/4-90/027F Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms

b. EPA 712-C-98-075 Fate, Transport and Transformation Test Guidelines - OPPTS 835.3100- "Aerobic Aquatic Biodegradation"

1.1.1.11 UNDERWRITERS LABORATORIES (UL)

a. UL 467 Standard for Grounding and Bonding Equipment

1.2 RELATED REQUIREMENTS

1.2.1 Section 26 08 00 Apparatus Inspection and Testing applies to this section, with the additions and modifications specified herein.

1.3 DEFINITIONS

1.3.1 Unless otherwise specified or indicated, electrical and electronics terms used in these specifications, and on the drawings, shall be as defined in IEEE Std 100.

1.4 SUBMITTALS

1.4.1 Government approval may be required on any of the following items. Items requiring submittals will be listed on the Submittal Register. Provide copies of all submittals per the requirements in Section 01 33 00, Submittal Procedures, or as listed on the Submittal Register.

a. A certification, from the manufacturer, that the technical requirements of this specification shall be met.

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Attachment 1

b. An outline drawing of the transformer with devices identified (paragraph entitled "Transformer Drawings," item a).

c. ANSI nameplate data of the transformer (paragraph entitled "Transformer Drawings", item b).

d. Routine and other tests (paragraph entitled "Routine and Other Tests"), shall be conducted by the manufacturer and may be witnessed by the government (paragraph entitled "Source Quality Control"). Provide transformer test schedule required by submittal item "SD-11 Closeout Submittals". Provide certified copies of the tests.

e. Provide acceptance test reports required by submittal item "SD-06 Test Reports".

f. Provide operation and maintenance manuals required by submittal item "SD-10 Operation and Maintenance Data".

1.4.1.2 SD-02 Shop Drawings

a. Unit Substation Drawings

b. Transformer drawings

(1) Include wiring diagrams and installation details of equipment indicating proposed location, layout and arrangement, control panels, accessories, piping, ductwork, and other items that must be shown to ensure a coordinated installation. Wiring diagrams shall identify circuit terminals and indicate the internal wiring for each item of equipment and the interconnection between each item of equipment. Drawings shall indicate adequate clearance for operation, maintenance, and replacement of operating equipment devices.

Submittals shall include the nameplate data, size, and capacity. Submittals shall also include applicable federal, military, industry, and technical society publication references.

1.4.1.3 SD-03 Product Data

a. Fuse curves

b. Secondary unit substation

c. Unit substation transformer (liquid-filled)

d. Unit substation transformer (dry-type)

e. Submittal shall include manufacturer's information for each component, device, and accessory provided with the transformer.

1.4.1.4 SD-06 Test Reports

a. Acceptance checks and tests

1.4.1.5 SD-07 Certificates

a. Paint coating system

b. Transformer Losses

1.4.1.6 SD-09 Manufacturer's Field Reports

a. Load Interrupter Switch production tests

b. Unit substation transformer design tests (liquid-filled)

c. Unit substation transformer routine and other tests (liquid-filled)

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d. Unit substation transformer design tests (dry-type)

e. Unit substation transformer routine and other tests (dry-type)

1.4.1.7 SD-10 Operation and Maintenance Data

a. Unit substations, Data Package 5

1.4.1.8 SD-11 Closeout Submittals

a. Assembled Operation and Maintenance Manuals

b. Equipment test schedule

1.5 QUALITY ASSURANCE

1.5.1 Drawing Requirements

1.5.1.1 Unit Substation Drawings

a. Drawings shall include, but are not limited to the following:

(1) An outline drawing, with front, top, and side views showing incoming, transformer, and outgoing sections. Include switchgear information from Section 26 28 00.00 10 Motor Control Centers, Switchboards and Panelboards or 26 23 00 Switchboards and Switchgear as part of the total unit substation, as applicable.

(2) One-line diagram showing load interrupter switch, current transformers, meters, and ampere rating of bus bars.

(3) Elementary diagrams and wiring diagrams with terminals identified, and indicating prewired interconnections between items of equipment and the interconnection between the items.

(4) Provisions for future extension and future forced air equipment.

(5) Time-current characteristic fuse curves (on full size logarithmic paper).

1.5.1.2 Transformer Drawings

a. Drawings shall include, but are not limited to the following:

(1) An outline drawing, with front, top, and side views.

(2) ANSI nameplate data.

1.5.1.3 Paint Coating System

a. Submit IEEE C57.12.29 coating system performance requirement tests. When interrupter switchgear and transformer are provided by two different manufacturers, each one shall provide certification.

1.5.1.4 Transformer Losses

a. Submit certification from the manufacturer indicating conformance with the paragraph entitled "Specified Transformer Losses".

1.5.1.5 Substation Product Data

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Attachment 1

a. Submittal shall include manufacturer's information for each component, device, and accessory provided with the equipment.

1.5.2 Test Reports

1.5.2.1 Submit report of acceptance test results as specified by paragraph entitled "Field Quality Control."

1.5.3 Regulatory Requirements

1.5.3.1 In each of the publications referred to herein, consider the advisory provisions to be mandatory, as though the word, "shall" had been substituted for "should" wherever it appears. Interpret references in these publications to the "authority having jurisdiction," or words of similar meaning, to mean the Contracting Officer. Equipment, materials, installation, and workmanship shall be in accordance with the mandatory and advisory provisions of NFPA 70 unless more stringent requirements are specified or indicated.

1.5.4 Standard Products

1.5.4.1 Provide materials and equipment that are products of manufacturers regularly engaged in the production of such products which are of equal material, design and workmanship. Products shall have been in satisfactory commercial or industrial use for 2 years prior to bid opening.

The 2-year period shall include applications of equipment and materials under similar circumstances and of similar size. The product shall have been on sale on the commercial market through advertisements, manufacturers' catalogs, or brochures during the 2-year period.

Where two or more items of the same class of equipment are required, these items shall be products of a single manufacturer; however, the component parts of the item need not be the products of the same manufacturer unless stated in this section.

1.5.5 Alternative Qualifications

1.5.5.1 Products having less than a 2-year field service record will be acceptable if a certified record of satisfactory field operation for not less than 6000 hours, exclusive of the manufacturers' factory or laboratory tests, is furnished.

1.5.6 Material and Equipment Manufacturing Date

1.5.6.1 Products manufactured more than 3 years prior to date of delivery to site shall not be used, unless specified otherwise.

1.6 MAINTENANCE

1.6.1 Assembled Operation and Maintenance Manuals

1.6.1.1 Manuals shall be assembled in durable, hard covered, water resistant binders. The manual shall be assembled and indexed in the order noted in a table of contents. The contents of the assembled operation and maintenance manuals shall be as follows:

a. Manufacturer's O&M information required by the paragraph entitled, "SD-10 Operation and Maintenance Data."

b. Catalog data required by the paragraph entitled, "SD-03 Product Data."

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Attachment 1

c. Drawing required by the paragraph entitled, "SD-02 Shop Drawings."

d. Price for spare parts and supply list

e. Routine and field acceptance test reports

1.6.2 Operation and Maintenance Data

1.6.2.1 Submit operation and maintenance data in accordance with Section 01 78 23 Operation and Maintenance Data and as specified herein.

1.7 WARRANTY

1.7.1 The equipment items shall be supported by service organizations which are reasonably convenient to the equipment installation in order to render satisfactory service to the equipment on a regular and emergency basis during the warranty period of the contract.

PART 2 PRODUCTS

2.1 PRODUCT COORDINATION

2.1.1 Products and materials not considered to be secondary unit substations and related accessories are specified in Section 33 70 02.00 10 Electrical Distribution System, Underground and Section 26 20 00 Interior Distribution System.

2.2 SECONDARY UNIT SUBSTATION

2.2.1 Secondary Unit substations shall comply with IEEE C37.121 regardless of the kVA rating specified. Substation shall consist of incoming sections, transformer sections, and outgoing sections. If applicable, substation shall be designed for outdoor service with ventilation openings and gasketing provided to ensure a weatherproof assembly under rain, snow, sleet, and hurricane conditions. Substations shall be sub-assembled and coordinated by one manufacturer and shall be shipped in complete sections ready for connection at the site. Where practicable, substation shall be shipped as one unit. External doors shall have provisions for padlocking.

2.2.2 Incoming Sections

2.2.2.1 If required for proper connection and alignment, include a transition section with the incoming section.

2.2.3 Incoming Section Enclosure

2.2.3.1 The incoming section enclosure shall be NEMA ICS 6 Type as indicated. Bases, frames and channels of enclosure shall be corrosion resistant and shall be fabricated of ASTM A 167 type 304 or 304L stainless steel or galvanized steel. Base shall include any part of enclosure that is within (3 inches) of concrete pad. Galvanized steel shall be ASTM A 123, ASTM A 653 G90 coating, and ASTM A 153, as applicable. Paint enclosure, including bases, ASTM D 1535 light gray No. 61 or No. 49. Paint coating system shall comply with IEEE C57.12.29.

2.2.3.2 Cable Terminations

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Attachment 1

a. Provide medium voltage cable terminations as specified in Section 33 70 02.00 10 Electrical Distribution System, Underground.

b. IEEE Std 386. Insulated High-Voltage Connectors. Connectors shall have steel reinforced hook-stick eye, grounding eye, test point, and arc-quenching contact material.

c. Provide one set of three grounding elbows and one set of three feed-thru inserts for each secondary unit substation. Grounding elbows and feed-thru inserts shall be delivered to the contracting officer

2.2.4 Surge Arresters

a. IEEE C62.11, rated as indicated, fully shielded, dead-front, metal-oxide-varistor, elbow type with resistance-graded gap, suitable for plugging into inserts. Arresters for use at elevations in excess of 6000 feet above mean sea level shall be specifically rated for that purpose. Arresters shall be equipped with mounting brackets suitable for the indicated installations.

2.2.4.2 Load Interrupter Switch

a. IEEE C37.20.3, UL listed and labeled load interrupter switchgear. Provide a three-pole, single-throw, deadfront, metal-enclosed, load interrupter switch with manual stored energy operator.

The switch shall be operated by a manually charged spring stored energy mechanism which shall simultaneously disconnect or connect ungrounded conductors. The moveable blade of the switch shall be de-energized when in the open position. The mechanism shall enable the switch to close against a fault equal to the momentary rating of the switch without affecting its continuous current carrying or load interrupting ability. A ground bus shall extend the width of the switch enclosure and shall be bolted directly thereto. Connect frame of unit to ground bus.

The door shall have an inspection window to allow full view of the position of the three switch blades through the closed door. Switch shall have provision for padlocking in the open and closed positions. Switch/fuse integrated ratings shall be as required.

2.2.4.3 Primary Protective Device Connection

a. Connections between the primary protective device and transformer shall be cable or bus (as applicable) mounted on porcelain insulators, and sized and braced to withstand the specified short-circuit and short-time currents.

2.2.5 Transformer (Liquid-Filled) Sections

2.2.5.1 ANSI C57.12.13. Less-flammable liquid-filled. Transformer base, including the tank, radiators, flanges, base, lifting provisions, and hardware, shall be fabricated of ASTM A 167 type 304, 304L, or 316 stainless steel. Transformer base shall include any part of the transformer that is within (3 inches) of concrete pad. Paint coating system shall comply with

IEEE C57.12.29.

2.2.5.2 Transformer Ratings

a. Cooling Class: As indicated.

b. Frequency: 60 Hz.

c. Phases: Three phase.

d. Rated Kilovolt Amperes: As indicated.

e. Voltage Rating: As indicated.

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f. Impedance: As indicated.

g. Insulation Level: As indicated.

h. Temperature Rise: 65 degree C average winding temperature rise above a 30 degree ambient.

i. Audible Sound Levels: Audible sound levels shall comply with the following:

kVA Range DECIBELS (MAX)

225-300 55 301-500 56 501-700 57 701-1000 58 1001-1500 60 1501-2000 61 2001-2500 62 2501-3000 63 3001-4000 64

2.2.5.3 Transformer Accessories

a. The transformer shall have the following accessories:

(1) Four 2.5 percent full capacity taps, two above and two below rated primary voltage.

(2) Tap changer, with external, pad-lockable, manual type operating handle, for changing tap setting when transformer is de-energized.

(3) Dead-front high-voltage bushings; IEEE Std 386. 15 kV, 95 kV BIL 25kV, 125 kV BIL 35 kV, 150 kV BIL.

(4) Parking stands: Provide a parking stand near each dead-front bushing.

(5) Insulated low-voltage neutral bushing with lugs for ground cable and removable ground strap.

(6) Ground pads.

(7) Liquid-level indicator.

(8) Pressure-vacuum gage.

(9) Liquid temperature indicator.

(10) Drain and filter valves.

(11) Pressure relief device, top mounted, Qualitrol series 208.

(12) Diagrammatic stainless steel or laser-etched anodized aluminum nameplate in accordance with IEEE C57.12.00 and as modified or supplemented by this section.

(13) Transformer base with provisions for jacking and for rolling in either direction.

(14) Lifting provisions.

(15) Bolted transformer top or welded top with bolted handhole access.

(16) Auxiliary cooling equipment and controls.

(a) Transformer shall be forced-air-cooled. Forced-air-cooling fans shall have automatic temperature control relay.

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Attachment 1

2.2.5.4 Specified Transformer Losses

a. The values for the specified losses shall be used for comparison with the losses determined during the routine tests. If the routine test values for no-load losses exceed the specified no-load losses by more than 10 percent, or the total losses exceed the specified total losses (sum of no-load and load losses) by more than 6 percent, the transformer is unacceptable.

2.2.5.5 Insulating Liquid

a. Less-flammable transformer liquids: NFPA 70 and FM P7825 for less-flammable liquids having a fire point not less than 300 degrees C tested per ASTM D 92 and a dielectric strength not less than 33 kV tested per ASTM D 877. Provide identification of transformer as "non- PCB" and "manufacturer's name and type of fluid" on the nameplate.

(1) The fluid shall be a biodegradable electrical insulating and cooling liquid classified by UL and approved by FM as "less flammable" fluids. The fluid shall meet the following fluid properties:

(a) Pour point: ASTM D 97, less than -15 degree C

(b) Aquatic biodegradation: EPA 712-C-98-075, 100%

(c) Trout toxicity: OECD Test 203, zero mortality of EPA 600/4-90/027F, pass

2.2.5.6 Transformer (Dry-Type) Section[s]

a. IEEE C57.12.01, and [IEEE C57.12.50 for dry-type transformers rated up to 500 kVA and IEEE C57.12.51 for dry-type transformers rated 501 kVA and larger. Transformer base, including the enclosure, flanges, base, lifting provisions, and hardware, shall be fabricated of ASTM A 167 type 304 or 304L stainless steel. Transformer base shall include any part of the transformer that is within (3 inches) of concrete pad. Paint coating system shall comply with

IEEE C57.12.29.

b. Provide a vacuum pressure impregnated (VPI) type transformer with an insulation system rated 220 degrees C, and with an 80 degree C average winding temperature rise above a 40 degrees C maximum ambient.

2.2.5.7 Transformer Ratings

a. Transformer shall be as indicated.

b. Transformer voltage ratings shall be as indicated.

c. Provide four 2.5 percent full capacity taps, two above and two below rated primary voltage.

Locate tap adjustments on the face of the high voltage coil. Adjustments shall be accessible by removing the front panel and shall be made when the transformer is de-energized.

d. Audible sound levels shall comply with the following:

kVA DECIBELS (MAX)

225 58 300 58 kVA DECIBELS (MAX)

500 60

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750 64 1000 64 1500 65 2000 66 2500 68

e. Diagrammatic stainless steel or laser-etched anodized aluminum nameplate

f. Transformer shall include ground pads, lifting lugs and provisions for jacking under base. The transformer base construction shall be suitable for using rollers or skidding in any direction.

The transformer shall have an insulated low-voltage neutral bushing with lugs for ground cable, and with removable ground strap.

g. Dry type transformer shall have the following accessories.

(1) Winding temperature indicator

(2) Auxiliary cooling equipment and controls

(a) Transformer shall be forced-air-cooled. Forced-air-cooling fans shall have automatic temperature control relay temperature indicator with sequence contacts.

2.2.6 Specified Transformer Losses

2.2.6.1 The values for the specified losses shall be used for comparison with the losses determined during the routine tests. If the routine test values for no-load losses exceed the specified no-load losses by more than 10 percent, or the total losses exceed the specified total losses (sum of no-load and load losses) by more than 6 percent, the transformer is unacceptable.

2.2.7 Outgoing Section

2.2.7.1 The outgoing section shall consist of a full height air terminal compartment. This compartment shall contain the indicated metering, instruments, and control power transformers and shall be the connection point for the secondary conductors between the transformer and the switchboard. Provide one three point latching hinged door, either full height or on the upper half of the outgoing section to provide access to metering. The upper section shall contain the current transformers and a watthour meter mounted to a dead front interior barrier as defined below. If using upper half section door only, the lower section shall be bolt on type and contain bus bars and lugs to terminate the service entrance conductors. Provide insulated barriers between the upper and lower sections to permit the bus bars to pass between the sections.

Provide locking access handle to eliminate unauthorized access.

2.2.7.2 Outgoing Section Enclosure

a. Provide outgoing section enclosure in accordance with the requirements in paragraph entitled, "Incoming Section Enclosure".

2.2.8 Switchgear Mounted Power Monitors

2.2.8.1 IEEE C37.90.1 for surge withstand. Provide true rms, plus/minus one percent accuracy, programmable, microprocessor-based meters enclosed in sealed cases with a simultaneous three line display. Meters shall have (0.56 inch), minimum, LED's. The meters shall accept input from standard 5A secondary instrument transformers. Programming shall be via a front panel display and a communication interface with a computer. Password secured programming shall

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Attachment 1 be stored in non-volatile EEPROM memory. Digital communications shall be provided with the required protocol. The meter shall calculate and store average max/min demand values for all readings based on a user selectable sliding window averaging period. The meter shall have programmable hi/low set limits with two Form C dry contact relays when exceeding alarm conditions. Meter shall provide THD measurement to the thirty-first order. Historical trend logging capability shall include ability to store up to 100,000 data points with intervals of 1 second to 180 minutes. The unit shall also store and time stamp up to 100 programmable triggered conditions. Event waveform recording shall be triggered by the rms of 2 cycles of voltage or current exceeding programmable set points. Waveforms shall be stored for all 6 channels of voltage and current for a minimum of 10 cycles prior to the event and 50 cycles past the event.

(1) Multi-Function Meter: Meter shall simultaneously display a selected phase to neutral voltage, phase to phase voltage, percent phase to neutral voltage THD, percent phase to phase voltage THD; a selected phase current, neutral current, percent phase current THD, percent neutral current; selected total PF, kW, kVA, kVAR, FREQ, kVAh, kWh.

Detected alarm conditions include over/under current, over/under voltage, over/under kVA, over/under frequency, over/under selected PF/kVAR, voltage phase reversal, voltage imbalance, reverse power, over percent THD. The meter shall have a Form C KYZ pulse output relay.

2.2.9 Instruments

2.2.9.1 ANSI C39.1 for electrical indicating switchboard style instruments, with 2 percent accuracy.

The ac ammeters and voltmeters shall be minimum of (2 inches) square, with (250-degree) scale. Provide single phase indicating instruments with flush-mounted transfer switches for reading three phases.

a. Ac Ammeters

(1) Self-contained.

b. Ac Voltmeters

(1) Self-contained.

2.2.9.2 Instrument Control Switches

a. Provide rotary cam-operated type with positive means of indicating contact positions. Switches shall have silver-to-silver contacts enclosed in a protective cover which can be removed to inspect the contacts.

2.2.9.3 Current Transformers

a. IEEE C57.13. Transformers shall be single ratio, 60 hertz.

2.2.10 Control Power Transformers

2.2.10.1 Transformer shall conform to the requirements of Section 26 20 00 Interior Distribution System.

2.2.11 Meter Fusing

2.2.11.1 Provide a fuse block mounted in the metering compartment containing one fuse per phase to protect the voltage input to voltage sensing meters. Size fuses as recommended by the meter

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Attachment 1 manufacturer.

2.2.12 Heaters

2.2.12.1 Provide 120-volt heaters in incoming section, dry-type transformer section, and outgoing section. Heaters shall be of sufficient capacity to control moisture condensation in the compartments, shall be 250 watts minimum, and shall be controlled by a thermostat located in each section. Thermostat shall be industrial type, high limit, to maintain compartments within the range of (60 to 90 degrees F). If heater voltage is different than substation equipment voltage, provide transformer rated to carry 125 percent of heater full load rating. Transformer shall have 220 degrees C insulation system with a temperature rise not exceeding 115 degrees C and shall conform to NEMA ST 20.

2.2.13 Insulated Barriers

2.2.13.1 Where insulated barriers are required by reference standards, provide barriers in accordance with NEMA LI 1, Type GPO-3, (0.25 inch) minimum thickness.

2.2.14 Terminal Boards

2.2.14.1 Provide with engraved plastic terminal strips and screw type terminals for external wiring between components and for internal wiring between removable assemblies. Terminal boards associated with current transformers shall be short-circuiting type. Terminate conductors for current transformers with ring-tongue lugs. Terminal board identification shall be identical in similar units. External wiring shall be color coded consistently for similar terminal boards.

2.2.15 Wire Marking

2.2.15.1 Mark control and metering conductors at each end. Provide factory-installed, white, plastic tubing, heat stamped with black block type letters on factory-installed wiring. On field-installed wiring, provide white, preprinted, polyvinyl chloride (PVC) sleeves, heat stamped with black block type letters. Each sleeve shall contain a single letter or number, shall be elliptically shaped to securely grip the wire, and shall be keyed in such a manner to ensure alignment with adjacent sleeves. Provide specific wire markings using the appropriate combination of individual sleeves. Each wire marker shall indicate the device or equipment, including specific terminal number to which the remote end of the wire is attached.

2.2.16 Grounding and Bonding

2.2.16.1 Provide as specified in Section 33 70 02.00 10 Electrical Distribution System, Underground.

2.2.17 Padlocks

2.2.17.1 Padlocks shall be provided for secondary unit substation equipment and for each fence gate.

Padlocks shall be keyed as directed by the Contracting Officer. Padlocks shall comply with Section 08 71 00 Door Hardware.

2.2.18 Cast-in-Place Concrete

2.2.18.1 Concrete associated with electrical work for other than encasement of underground ducts shall be (4000 psi) minimum 28-day compressive strength unless specified otherwise. All concrete

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Attachment 1 shall conform to the requirements of Section 03 30 00.00 20 Cast-In Place Concrete.

2.3 MANUFACTURER'S NAMEPLATES

2.3.1 Each item of equipment shall have a nameplate bearing, as a minimum, the manufacturer's name, address, model number, and serial number securely affixed in a conspicuous place; the nameplate of the distributing agent will not be acceptable. Include additional information as applicable to fully identify the equipment. Nameplates shall be made of noncorrosive metal. Equipment containing liquid dielectric shall include the type of dielectric on the nameplate. Sectionalizer switch nameplates shall have a schematic with all switch positions shown and labeled. As a minimum, provide nameplates for transformers, circuit breakers, meters, switches, and switchgear.

2.4 FIELD FABRICATED NAMEPLATES

2.4.1 ASTM D 709. Provide laminated plastic nameplates for each secondary unit substation, equipment enclosure, relay, switch, and device; as specified in this section or as indicated on the drawings. Each nameplate inscription shall identify the function and, when applicable, the position. Nameplates shall be melamine plastic, (0.125 inch) thick, white with black center core.

Surface shall be matte finish. Corners shall be square. Accurately align lettering and engrave into the core. Minimum size of nameplates shall be (one by 2.5 inches). Lettering shall be a minimum of (0.25 inch) high normal block style.

2.5 WARNING SIGNS

2.5.1 Provide warning signs for the enclosures of secondary unit substations having a nominal rating exceeding 600 volts.

a. When the enclosure integrity of such equipment is specified to be in accordance with IEEE C57.12.29, such as for secondary unit substations, provide self-adhesive warning signs on the outside of the high voltage compartment door(s). Sign shall be a decal and shall have nominal dimensions of (7 by 10 inches) with the legend "DANGER HIGH VOLTAGE" printed in two lines of nominal (2 inch) high letters. The word "DANGER" shall be in white letters on a red background and the words "HIGH VOLTAGE" shall be in black letters on a white background.

Decal shall be Panduit No. PPS0710D72 or approved equal.

b. When such equipment is guarded by a fence, mount signs on the fence. Provide metal signs having nominal dimensions of (14 by 10 inches) with the legend "DANGER HIGH VOLTAGE KEEP OUT" printed in three lines of nominal (3 inch) high white letters on a red and black field.

2.6 SOURCE QUALITY CONTROL

2.6.1 Equipment Test Schedule

2.6.1.1 The Government reserves the right to witness tests. Provide equipment test schedules for tests to be performed at the manufacturer's test facility. Submit required test schedule and location, and notify the Contracting Officer 30 calendar days before scheduled test date. Notify Contracting Officer 15 calendar days in advance of changes to scheduled date.

a. Test Instrument Calibration

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Attachment 1

(1) The manufacturer shall have a calibration program which assures that all applicable test instruments are maintained within rated accuracy.

(2) The accuracy shall be directly traceable to the National Institute of Standards and Technology.

(3) Instrument calibration frequency schedule shall not exceed 12 months for both test floor instruments and leased specialty equipment.

(4) Dated calibration labels shall be visible on all test equipment.

(5) Calibrating standard shall be of higher accuracy than that of the instrument tested.

(6) Keep up-to-date records that indicate dates and test results of instruments calibrated or tested. For instruments calibrated by the manufacturer on a routine basis, in lieu of third party calibration, include the following:

(a) Maintain up-to-date instrument calibration instructions and procedures for each test instrument.

(b) Identify the third party/laboratory calibrated instrument to verify that calibrating standard is met.

2.6.2 Load Interrupter Switch Production Tests

2.6.2.1 IEEE C37.20.3. Furnish reports of production tests performed on the actual equipment for this project. Required tests shall be as follows:

a. Production Tests

(1) Dielectric

(2) Mechanical operation

(3) Grounding of instrument transformer case

(4) Electrical operation and control wiring

2.6.3 Transformer Design Tests (Liquid-Filled)

2.6.3.1 In accordance with IEEE C57.12.00 and IEEE C57.12.90. Additionally, IEEE C57.12.80 section 5.1.2 states that "design tests are made only on representative apparatus of basically the same design." Submit design test reports (complete with test data, explanations, formulas, and results), in the same submittal package as the product data and shop drawings for each of the specified transformers. Design tests shall have been performed prior to the award of this contract.

a. Tests shall be certified and signed by a registered professional engineer.

b. Temperature rise: "Basically the same design" for the temperature rise test means a unit-substation transformer with the same coil construction (such as wire wound primary and sheet wound secondary), the same kVA, the same cooling type (ONAN), the same temperature rise rating, and the same insulating liquid as the transformer specified.

c. Lightning impulse: "Basically the same design" for the lightning impulse dielectric test means a unit-substation transformer with the same BIL, the same coil construction (such as wire wound primary and sheet wound secondary), and a tap changer, if specified. Design lightning impulse tests shall include both the primary and secondary windings of that transformer.

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Attachment 1

(1) IEEE C57.12.90 paragraph 10.3 entitled "Lightning Impulse Test Procedures," and IEEE C57.98.

(2) State test voltage levels.

(3) Provide photographs of oscilloscope display waveforms or plots of digitized waveforms with test report.

d. Lifting and moving devices: "Basically the same design" for the lifting and moving devices test means a transformer in the same weight range as the transformer specified.

e. Pressure: "Basically the same design" for the pressure test means a unit-substation transformer with a tank volume within 30 percent of the tank volume of the transformer specified.

2.6.4 Transformer Routine and Other Tests (Liquid-Filled)

2.6.4.1 In accordance with IEEE C57.12.00 and IEEE C57.12.90. Routine and other tests shall be performed by the manufacturer on each of the actual transformers prepared for this project to ensure that the design performance is maintained in production. Submit test reports, by serial number and receive approval before delivery of equipment to the project site. Required tests and testing sequence shall be as follows:

a. Cold resistance measurements (provide reference temperature)

b. Phase relation

c. Ratio

d. Insulation power-factor by manufacturer's recommended test method.

e. No-load losses (NLL) and excitation current

f. Load losses (LL) and impedance voltage

g. Dielectric

(1) Impulse: Per IEEE C57.12.90 paragraph 10.3 entitled "Lightning Impulse Test Procedures," and IEEE C57.98. Test the primary winding only.

(a) State test voltage levels

(b) Provide photographs of oscilloscope display waveforms or plots of digitized waveforms with test reports. As an alternative, photographs of oscilloscope display waveforms or plots of digitized waveforms may be hand-delivered at the factory witness test.

1. Applied voltage

2. Induced voltage

h. Leak

i. Sample insulating liquid. Sample shall be tested for:

(1) Dielectric breakdown voltage

(2) Acid neutralization number

(3) Specific gravity

(4) Interfacial tension

(5) Color

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Attachment 1

(6) Visual condition

(7) Water in insulating liquid

(8) Measure dissipation factor or power factor

j. Perform dissolved gas analysis (DGA)

2.6.5 Transformer Design Tests (Dry-Type)

2.6.5.1 In accordance with IEEE C57.12.01 and IEEE C57.12.91. Additionally, IEEE C57.12.80 section 5.1.2 states that "design tests are made only on representative apparatus of basically the same design." Submit design test reports in the same submittal package as the product data, shop drawings, and certificates of transformer losses for each of the specified transformers.

Design tests shall have been performed prior to the award of this contract.

a. Provide required submittals in a hard-covered binder with index and tabs.

b. Tests shall be certified and signed by a registered professional engineer. Engineers stamp and signature shall appear on at least the first page of the factory test reports.

c. Temperature rise:

(1) "Basically the same design" for the temperature rise test means a unit-substation transformer with the same coil construction (such as wire wound primary and sheet wound secondary), the same kVA, the same cooling type (AA), the same temperature rise rating, the same insulating class and the same insulating medium as the transformer specified.

(2) Provide temperature rise readings, formulas, calculations of average temperature rise, and description of test method.

d. Lightning impulse:

(1) "Basically the same design" for the lightning impulse dielectric test means a unit-substation transformer with the same BIL and the same coil construction (such as wire wound primary and sheet wound secondary).

(2) IEEE C57.12.91 and IEEE C57.98. Provide design lightning impulse tests consisting of a reduced full-wave, two-chopped waves, and one full wave test for each phase of the primary and secondary windings of the same transformer.

(3) State test voltage levels.

(4) Provide photographs of oscilloscope display waveforms or plots of digitized waveforms with test report.

(5) Partial Discharge Test per IEEE C57.124. Provide transformer ratings, description and diagram of test method used, test readings and final results.

2.6.6 Transformer Routine and Other Tests (Dry-Type)

2.6.6.1 In accordance with IEEE C57.12.01 and IEEE C57.12.91. Routine and other tests shall be performed by the manufacturer on each of the actual transformers prepared for this project to ensure that the design performance is maintained in production. Submit test reports, by serial number and receive approval before delivery of equipment to the project site. Required tests and testing sequence shall be as follows:

a. Resistance measurements

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Attachment 1

b. Phase relation

c. Ratio

d. Insulation power-factor by manufacturer's recommended test method.

e. No-load losses (NLL) and excitation current

f. Load losses (LL) and impedance voltage

g. Lightning impulse: Perform the complete design type impulse tests on the transformer primary winding only.

(1) IEEE C57.12.91 and IEEE C57.98

(2) State test voltage levels

(3) Provide photographs of oscilloscope display waveforms or plots of digitized waveforms with test reports. As an alternative, photographs of oscilloscope display waveforms or plots of digitized waveforms may be hand delivered at the factory witness test.

h. Low frequency dielectric

(1) Applied voltage

(2) Induced voltage

PART 3 EXECUTION

3.1 INSTALLATION

3.1.1 Electrical installations shall conform to IEEE C2, NFPA 70, and to the requirements specified herein.

3.2 GROUNDING

3.2.1 NFPA 70 and IEEE C2, except that grounds and grounding systems shall have a resistance to solid earth ground not exceeding 5 ohms.

3.2.1.1 Grounding Electrodes

3.2.1.2 Provide driven ground rods as specified in Section 33 70 02.00 10 Electrical Distribution System, Underground. Connect ground conductors to the upper end of the ground rods by exothermic weld or compression connector. Provide compression connectors at equipment end of ground conductors.

3.2.2 Substation Grounding

3.2.2.1 Provide bare copper cable not smaller than No. 4/0 AWG not less than (24 inches) below grade interconnecting the indicated ground rods. Surge arrester and neutrals shall be bonded directly to the transformer enclosure and then to the grounding electrode system with bare copper conductors, sized as shown. Lead lengths shall be kept as short as practicable with no kinks or sharp bends. Substation transformer neutral connections shall not be smaller than No. 1/0 AWG. When work in addition to that indicated or specified is directed to obtain the specified ground resistance, the provision of the contract covering "Changes" shall apply. Fence and

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Attachment 1 equipment connections shall not be smaller than No. 4 AWG. Ground fence at each gate post and cornerpost and at intervals not exceeding (10 feet). Bond each gate section to the fence post through a (1/8 by one inch) flexible braided copper strap and clamps.

3.2.3 Connections

3.2.3.1 Make joints in grounding conductors and loops by exothermic weld or compression connector.

Exothermic welds and compression connectors shall be installed as specified in Section 33 70

02.00 10 Electrical Distribution System, Underground, paragraph entitled "Grounding".

3.2.4 Grounding and Bonding Equipment

3.2.4.1 UL 467, except as indicated or specified otherwise.

3.3 INSTALLATION OF EQUIPMENT AND ASSEMBLIES

3.3.1 Install and connect unit substations furnished under this section as indicated on project drawings, the approved shop drawings, and as specified herein.

3.3.2 Interrupter Switchgear

3.3.2.1 IEEE C37.20.3.

3.3.3 Meters and Instrument Transformers

3.3.3.1 NEMA C12.1.

3.3.4 Field Applied Painting

3.3.4.1 Where field applied painting of enclosures is required to correct damage to the manufacturer's factory applied coatings, provide manufacturer's recommended coatings and apply in accordance with manufacturer's instructions.

3.3.5 Field Fabricated Nameplate Mounting

3.3.5.1 Provide number, location, and letter designation of nameplates as indicated. Fasten nameplates to the device with a minimum of two sheet-metal screws or two rivets.

3.3.6 Warning Sign Mounting

3.3.6.1 Provide the number of signs required to be readable from each accessible side, but space the signs a maximum of (30 feet) apart.

3.3.7 Galvanizing Repair

3.3.7.1 Repair damage to galvanized coatings using ASTM A 780, zinc rich paint, for galvanizing damaged by handling, transporting, cutting, welding, or bolting. Do not heat surfaces that repair paint has been applied to.

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Attachment 1

3.4 FOUNDATION FOR EQUIPMENT AND ASSEMBLIES

3.4.1 Exterior Location

3.4.1.1 Mount unit substation on concrete slab. Unless otherwise indicated, the slab shall be at least (8 inches) thick, reinforced with a (6 x 6 - W2.9 x W2.9) mesh placed uniformly (4 inches) from the top of the slab. Slab shall be placed on a (6 inch) thick, well-compacted gravel base. Top of concrete slab shall be approximately (4 inches) above the finished grade. Edges above grade shall have (1/2 inch) chamfer. The slab shall be of adequate size to project at least (8 inches) beyond the equipment. Provide conduit turnups and cable entrance space required by the equipment to be mounted. Seal voids around conduit openings in slab with water- and oil-resistant caulking or sealant. Seals shall be of sufficient strength and durability to protect all energized live parts of the equipment from rodents, insects, or other foreign matter. Cut off and bush conduits (3 inches) above slab surface.

3.4.2 Interior Location

3.4.2.1 Mount unit substation on concrete slab. Unless otherwise indicated, the slab shall be at least (4 inches) thick. The top of the concrete slab shall be approximately (4 inches) above finished floor. Edges above floor shall have (1/2 inch) chamfer. The slab shall be of adequate size to project at least (4 inches) beyond the equipment. Provide conduit turnups and cable entrance space required by the equipment to be mounted. Seal voids around conduit openings in slab with water- and oil-resistant caulking or sealant. Seals shall be of sufficient strength and durability to protect all energized live parts of the equipment from rodents, insects, or other foreign matter. Cut off and bush conduits (3 inches) above slab surface.

3.4.3 Cast-in-Place Concrete

3.4.3.1 Cast-in-place concrete work shall conform to the requirements of Section 03 30 00.00 20 Cast- In-Place Concrete.

3.5 PADLOCKS

3.5.1 Provide padlocks for secondary unit substation equipment and for each fence gate.

3.6 FIELD QUALITY CONTROL

3.6.1 Performance of Acceptance Checks and Tests

3.6.1.1 Perform in accordance with the manufacturer's recommendations and include the following visual and mechanical inspections and electrical tests, performed in accordance with NETA

ATS.

3.6.1.2 Interrupter Switchgear (Air Switches)

a. Visual and Mechanical Inspection

(1) Compare equipment nameplate data with specifications and approved shop drawings.

(2) Inspect physical and mechanical condition.

(3) Confirm correct application of manufacturer's recommended lubricants.

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Attachment 1

(4) Verify appropriate anchorage and required area clearances.

(5) Verify appropriate equipment grounding.

(6) Verify correct blade alignment, blade penetration, travel stops, and mechanical operation.

(7) Verify that fuse sizes and types correspond to approved shop drawings.

(8) Verify that each fuse holder has adequate mechanical support.

(9) Inspect all bolted electrical connections for high resistance using low-resistance ohmmeter, verifying tightness of accessible bolted electrical connections by calibrated torque-wrench method, or performing thermographic survey.

(10) Test interlocking systems for correct operation and sequencing.

(11) Verify correct phase barrier materials and installation.

(12) Compare switch blade clearances with industry standards.

(13) Inspect all indicating devices for correct operation

b. Electrical Tests

(1) Perform insulation-resistance tests.

(2) Perform over-potential tests.

(3) Perform resistance measurements through all bolted connections with low-resistance ohmmeter, if applicable.

(4) Measure closed contact-resistance across each switch blade and fuse holder.

(5) Verify heater operation.

3.6.1.3 Transformers (Liquid-Filled)

a. Visual and mechanical inspection

(1) Compare equipment nameplate data with specifications and approved shop drawings.

(2) Inspect physical and mechanical condition. Check for damaged or cracked insulators and leaks.

(3) Verify that cooling fans and pumps operate correctly and that fan and pump motors have correct overcurrent protection.

(4) Verify operation of all alarm, control, and trip circuits from temperature and level indicators, pressure relief device, and fault pressure relay.

(5) Inspect all bolted electrical connections for high resistance using low-resistance ohmmeter, verifying tightness of accessible bolted electrical connections by calibrated torque-wrench method, or performing thermographic survey.

(6) Verify correct liquid level in transformer tank.

(7) Perform specific inspections and mechanical tests as recommended by manufacturer.

(8) Verify correct equipment grounding.

(9) Verify the presence of transformer surge arresters.

b. Electrical Tests

(1) Perform resistance measurements through all bolted connections with low-resistance

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Attachment 1 ohmmeter, if applicable.

(2)…