EDE SIR Attachment J.2 Switchboard Specification.pdf

693KA8-18-R-00005

PART III SECTION J

ATTACHMENT J.2 - SWITCHBOARD SPECIFICATION

TABLE OF CONTENTS

PART 1 – GENERAL…………………………………………………………………………page 3

1.1 REFERENCES

1.2 RELATED REQUIREMENTS

1.3 SUMMARY

1.4 SUBMITTALS……………………………………………………………………………..page 4

1.5 SHOP DRAWINGS………………………………………………………………………page 5

1.6 QUALITY ASSURANCE………………………………………………………………,,,page 6

1.6.1 Drawing References

1.6.2 Equipment Ratings……………………………………………………………………..page 7

1.7 DIMENSIONS AND STORAGE

1.8 EQUIPMENT QUALIFICATIONS AND CERTIFICATIONS

PART 2 – PRODUCTS

2.1 PRODUCT COORDINATION

2.2 SWITCHBOARD…………………………………………………………………………..page 7

2.2.1 Ratings

2.2.2 Construction

2.2.2.1 Enclosure

2.2.2.2 Bus Bars

2.2.2.3 Main Section…………………………………………………………………………..page 8

2.2.2.4 Distribution Sections

2.2.2.5 Auxiliary Sections

2.2.2.6 Handles

2.2.3 Protective Devices

2.2.3.1 Power Circuit Breaker

2.2.3.2 Molded-Case Circuit Breaker

2.2.4 Draw-out Breakers

2.2.4.1 Key Locks……………………………………………………………………………..page 9

2.2.4.2 Padlocks

2.2.5 Electronic Trip Units

2.2.6 Electronic Trip Unit Central Monitor

2.2.7 Instruments……………………………………………………………………………...page 10

2.2.7.1 AC Ammeters

2.2.7.2 AC Voltmeters

2.2.7.3 Instrument Control Switches

2.2.8 Watt-hour and Digital Meters

2.2.8.1 Digital Meters

2.2.8.2 Electronic Watt-hour Meter…………………………………………………………..page 11

2.2.9 Current Transformers…………………………………………………………………...page 12

2.2.10 TVSS

2.2.11 Meter Fusing

2.2.12 Heaters

2.2.13 Terminal Boards

2.2.14 Wire Marking

2.3 IDENTIFICATION

2.3.1 Wire Marking……………………………………………………………………………..page 13

2.3.2 Nameplates

2.3.3 Mimic Bus

2.4 WARNING SIGNS

2.5 SOURCE QUALITY CONTROL

2.5.1 Equipment Test Schedule

2.5.2 Switchboard Design Tests…………………………………………………….............page 14

2.5.2.1 Design Tests

2.5.3 Switchboard Production Tests

2.6 KIRK KEY INTERLOCKS

2.7 ACCESSORY COMPONENTS AND FEATURES

PART 1 GENERAL

1.1 REFERENCES

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.

AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)

ANSI/IEEE C57.12.29 (2014) Pad-Mounted Equipment--Enclosure Integrity for Coastal Environments (for switchboard and transformers)

AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)

ASTM A 123/A 123 M-02 (2002) Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products ASTM A 153/A 153M (2001; Rev. A) Zinc Coating (Hot-Dip) on Iron and Steel Hardware - AASHTO No.: M 232 ASTM A 653/A 653M (2000) Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process ASTM D 149(1997; Rev. A) Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at Commercial Power Frequencies ASTM D 1535 (1997) Specifying Color by the Munsell System

INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)

IEEE C12.15 (1990) Electricity Metering Solid-State Demand Registers for Electromechanical Watt-hour Meters IEEE C12.16 (1991) Electricity Metering Solid-State Electricity Meters

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

NEMA/IEEE C57.12.28 (2005) Pad-Mounted Equipment—Enclosure Integrity NEMA ICS 6 (2011) Industrial Control and Systems Enclosures NEMA LI 1 (2011) Industrial Laminated Thermosetting Products NEMA PB 2 (2011) Dead-front Distribution Switchboards NEMA PB 2.1 (2013) Proper Handling, Installation, Operation and Maintenance of Deadfront Distribution Switchboards Rated 600 Volts or Less NEMA PB 2 (2011) Deadfront Distribution Switchboards NEMA ST 20 (2014) Dry-Type Transformers for General Applications

UNDERWRITERS LABORATORIES (UL)

UL 489 12th Edition (January 15, 2013) Safety Molded-Case Circuit Breakers, Molded-Case Switches and Circuit-Breaker Enclosures UL 891 (July 2005) Dead-Front Switchboards UL 1283 (1998) Electromagnetic Interference Filters UL 1449 (1998) Standard for Safety for TVSS

1.2 RELATED REQUIREMENTS

Specification for Electrical Power Monitoring System (EPMS).

1.3 SUMMARY

All written material including electronic documents shall not be copyrighted or require the FAA to obtain special permission for reproduction for any purpose. This shall include, but no be limited to, Operation and Maintenance Manuals, Training Material, Shop Drawings, As-Builts, Software Code and Software Code Documentation. The FAA shall have the right to reproduce this information, as well as incorporate into their internal training programs and documents.

The Contractor shall furnish the equipment specified in this specification.

1.4 SUBMITTALS

1.4.1 Proposal Submittals

Offerors shall submit technical and management proposals in accordance with the instructions contained in Section L – Instructions, Conditions and Notices to Offerors, at L.15.0 – Proposal Instructions c) Volume III – “Technical and Management”.

1.4.2 Contract Submittals

The Contractor must, within ten days of Contract award, submit detailed and dimensioned plans, section and elevations. Type and size of structural supports, metal thickness, surface finishes, bus cross sections, provisions for lifting as well as single line diagram of switch, fuse, circuit breakers, bus arrangements, metering arrangements.

Schematic wiring diagrams and a full set of equipment wiring diagrams for protective equipment relays, overcurrent relays, pilot lights, alarms, and controls. Provide narratives for all wiring diagrams. Diagrams shall specify:

• Fuse sizes and types.

• Breaker sizes and types.

• Nameplate data.

Within ten days of Task Order/Delivery Order award, the Contractor shall submit a milestone chart indicating when each of the following will be received by the COR, expressed in weeks after receipt of Order.

1. Mimic-bus diagram layout.

2. Short-time and short-circuit ratings of switchboard assembly.

3. Electronic and paper copies of all time current curves for overcurrent protective devices.

4. Current ratings of buses

5. Submission of equipment shop drawings.

6. Submission of installation drawings.

7. Submission of Factory Acceptance Test Procedure.

8. Complete purchasing release of all material.

9. Completion of final assembly.

10. Submission of Site Acceptance Test Procedure.

11. Submission of O & M manuals.

12. Submission of schematic & wiring diagrams.

13. Submission of final as-built drawings

14. Factory Acceptance Testing - Switchboards

15. Switchboard shipping date to UPS manufacturer.

16. Switchboard received at site.

17. Site Acceptance Testing

The Contractor shall also submit:

Catalog cuts of equipment showing as a minimum the ratings, dimensions, weight and any other technical information published for the equipment and all accessories. Submittal shall identify proposed manufacturer of the switchboard, circuit breakers and fuses, as well as the overall dimensions and weight of the shipping splits.

Recommended spare parts list and pricing information. The spare parts list shall include but not be limited to the items called out in the Specifications.

A copy of the proposed preventive maintenance agreement for items of equipment both under warranty and out of warranty.

A preventive maintenance schedule for each item of equipment, specifying the type of maintenance required and identifying:

o all of the Contractor’s field service facilities, o the number of factory-trained field service technicians at each location, and o the number of paralleling switchboard systems under maintenance at each field service facility.

1.5 SHOP DRAWINGS

1.5.1 Contractor’s Drawings:

Twelve (12) copies shall be submitted to the COR for approval within ten business days of Task Order/Delivery Order signing, and prior to proceeding with any fabrication or assembly of equipment. All drawings and data shall be identified by project number and Specification reference. The drawings shall contain revision boxes to describe revisions in full detail. Indication of the latest revision on each drawing shall be made by such means as a triangle-enclosed revision number. The drawings MUST NOT be marked as proprietary to the Contractor. The following items as a minimum are required.

1. Outline drawings showing plan and elevation views of each piece of equipment with the size, weight, and heat dissipation of each piece of equipment, together with the size and weight of the shipping splits for each piece of equipment.

2. Base plans for the location of the equipment floor channels, anchor bolts and conduit entrance spaces, where applicable.

3. Three line wiring diagrams, showing unit wiring and markings for feeder and all control connections.

4. Detailed schematic diagrams and product descriptions of all systems. Include fully dimensioned component information.

5. Provide air filtration and air conditioning requirements for all operating modes.

6. Time/current characteristic curves for all circuit breakers, fuses and other circuit protection devices. Curves shall be full size logarithmic overlays.

7. Site acceptance test procedures for approval.

8. Bill of material for each drawing showing all components ratings and catalog numbers.

9. Warranty.

10. Recommended preventive maintenance procedure (outline form).

11. A list of all protection settings, such as rectifier turn-on delays, walk-in rates, etc.

Electronic copies of approved shop drawings must be submitted to the COR. Text shall be in MS Word for Windows format and drawings in the latest edition of AutoCAD.

1.6 QUALITY ASSURANCE

1.6.1 Drawing References

These specifications provide directions that equipment and wiring shall be manufactured and installed “as indicated,” “where indicated,” and “as indicated on drawings.” These references must be understood to refer to the Contractor’s FAA-approved design drawings unless otherwise indicate in the text of the Specification.

1.6.2 Equipment Ratings

Each switchboard as a complete and finished product shall receive a single integrated equipment rating by the manufacturer. The integrated equipment short circuit rating shall certify that all equipment is capable of withstanding the thermal and magnetic stress of a fault equal to the value specified on the Drawings. Such rating shall be established by actual tests by the manufacturer on similar equipment. This certification shall be permanently affixed to the switchboard.

1.7 DIMENSIONS AND STORAGE

1.7.1 Deliver switchboard in sections of lengths that can be moved past obstructions in delivery path. No section can be greater than 72” wide by 72” deep by 94.5” high, or as access points are shown on the FAA-approved drawings.

1.7.2 Store switchboard indoors in clean dry space with uniform temperature to prevent condensation. Protect switchboard from exposure to dirt, fumes, water, corrosive substances, and physical damage.

1.8 EQUIPMENT QUALIFICATIONS AND CERTIFICATIONS

1.8.1 The Contractor must submit a certification of standard switchboards, overcurrent protective devices, accessories, and the components’ withstand capabilities. “Withstand" means that the unit will remain in place without separation of any parts from the device when subjected to the seismic forces specified and the unit will be fully operational, as installed, after the seismic event.

Include the following:

1. Basis for Certification: Indicate whether withstand certification is based on actual test of assembled components or on calculation.

2. Dimensioned Outline Drawings of each Equipment Unit: Identify center of gravity and locate and describe mounting and anchorage provisions.

3. A detailed description of equipment anchorage devices on which the certification is based and their installation requirements.

PART 2 - PRODUCTS

2.1 PRODUCT COORDINATION

Products and materials not considered to be switchboards and related accessories are specified in the "Interior Distribution System" specification, Attachment J.3.

2.2 SWITCHBOARD

NEMA PB 2 (2011) Deadfront Distribution Switchboards UL 891 (July 2005) Dead-Front Switchboards

2.2.1 Ratings

The voltage rating of the switchboard shall be as indicated. The continuous current rating of the main bus shall be as indicated. The short-circuit current rating shall be as indicated. The switchboard shall be UL listed and labeled for its intended use and as service entrance equipment.

2.2.2 Construction

Switchboard shall consist of vertical sections bolted together to form a rigid assembly and shall be front and rear aligned. All circuit breakers shall be front accessible. Front and rear aligned switchboards shall have rear accessible load connections. Compartmentalized switchboards shall have vertical insulating barriers between the front device section, the main bus section, and the cable compartment. Where indicated, "space for future" or "space" shall mean to include bus, device supports, and connections. The switchboard must be provided with insulating barriers in accordance with NEMA LI 1, Type GPO-3, 6.35 mm 0.25 inch minimum thickness. A moisture resistant coating must be applied to all rough-cut edges of barriers. Switchboard shall be completely factory engineered and assembled, including protective devices and equipment indicated with necessary interconnections, instrumentation, and control wiring.

Circuit Breakers shall be rear connected, individually mounted, draw-out construction where shown on the Contractor’s single line diagrams.

2.2.2.1 Enclosure

The switchboard enclosure shall be listed to Underwriters Laboratories (UL) 891. Enclosure shall be bolted together with removable bolt-on side and hinged rear covers. Front and rear doors shall be provided with pad lockable vault handles with a three point catch. Bases, frames and channels of enclosure shall be corrosion resistant and shall be fabricated of galvanized steel. Base shall include any part of enclosure that is within 75 mm (3 inches) of concrete pad. Galvanized steel shall be ASTM A 123/A 123M, ASTM A 653/A 653M G90 coating, and ASTM A 153/A 153M, as applicable. Galvanize after fabrication where practicable. Paint enclosure, including bases, ASTM D 1535 light gray No. 61 or No. 49. Paint coating system shall comply with NEMA C57.12.28 for galvanized steel.

2.2.2.2 Bus Bars

Bus bars shall be copper, tin plated. Plating shall be manufacturer’s standard thickness. Make bus connections and joints with hardened steel bolts. The through-bus shall be rated at the full ampacity of the main throughout the switchboard. Provide minimum 6.35 mm by 50.8 mm one-quarter by 2 inch copper ground bus secured to each vertical section along the entire length of the switchboard. The neutral bus shall be rated 100% percent of the main bus continuous current rating or 200% as indicated. Phase bus bars shall be insulated with an epoxy finish power coating per ASTM D 149.

2.2.2.3 Main Section

The main section shall consist of an individually mounted draw-out insulated-case circuit breaker or otherwise indicated.

2.2.2.4 Distribution Sections

The distribution section shall consist of draw-out insulated case circuit breakers or otherwise indicated.

2.2.2.5 Auxiliary Sections

Auxiliary sections shall consist of indicated instruments, metering equipment, control equipment, transformer, and current transformer compartments as indicated.

2.2.2.6 Handles

Handles for individually mounted devices shall be of the same design and method of external operation. Label handles prominently to indicate device ampere rating, color coded for device type. Identify ON-OFF indication by handle position and by prominent marking.

2.2.3 Protective Devices

Provide main and branch protective devices as indicated. All circuit breakers shall have auxiliary contacts for connection to the EPMS monitoring system - form-C contacts, one normally open and one normally closed, for remote monitoring of system operation. This is required for the timing considerations of the monitoring systems (1 ms).

2.2.3.1 Power Circuit Breaker

IEEE C37.13. Low-voltage power circuit breaker with a short-circuit current rating as indicated.

Series rated circuit breakers are unacceptable. Breaker frame size shall be as indicated. Equip electrically operated breakers (where shown on the drawings) with motor-charged, stored-energy closing mechanism to permit rapid and safe closing of the breaker against fault currents within the short time rating of the breaker, independent of the operator's level of effort in closing the handle.

2.2.3.2 Molded-Case Circuit Breaker

UL 489 - 12th Edition (January 15, 2013) Safety Molded-Case Circuit Breakers, Molded-Case Switches and Circuit-Breaker Enclosures

The circuit breaker must be UL listed and labeled, 100%-rated, stationary, manually operated, low voltage molded-case circuit breaker, with a short-circuit current rating of as indicated. Breaker frame size shall be as indicated. Series rated circuit breakers are unacceptable.

2.2.4 Draw-out Breakers

Equip draw-out breakers with disconnecting contacts, wheels, and interlocks for draw-out application. The main, auxiliary, and control disconnecting contacts shall be of the silver-plated, multi-finger, positive pressure, self-aligning type. Each draw-out breaker shall be provided with four-position operation. Each position shall be clearly identified by an indicator on the circuit breaker front panel.

a. Connected Position: Primary and secondary contacts are fully engaged. Breaker must be tripped before it can be racked into or out of position.

b. Test Position: Primary contacts are disconnected but secondary contacts remain fully engaged. Position shall allow complete test and operation of the breaker without energizing the primary circuit.

c. Disconnected Position: Primary and secondary contacts are disconnected.

d. Withdrawn (Removed) Position: Places breaker completely out of compartment, ready for removal. Removal of the breaker shall actuate assembly that isolates the primary stabs.

2.2.4.1 Key Locks

Breakers shall be equipped with provision for up to two key locks, allowing locking in the disconnected positions

2.2.4.2 Padlocks

Breakers shall be equipped with padlocks to prevent unauthorized closing of the circuit breaker contacts.

2.2.5 Electronic Trip Units

Equip main and distribution breakers as indicated with a solid-state tripping system consisting of three current sensors and a microprocessor-based trip unit that will provide true RMS-sensing adjustable time-current circuit protection. The ampere rating of the current sensors shall be as indicated. The trip unit ampere rating shall be as indicated. Ground fault protection shall be as indicated. The electronic trip units shall have the following features as indicated.

a. Indicated Breakers shall have long delay pick-up and time settings, and LED indication of cause of circuit breaker trip.

b. Main breakers shall have short delay pick-up and time settings and, instantaneous settings and ground fault settings as indicated.

c. Distribution breakers shall have short delay pick-up and time settings, instantaneous settings, and ground fault settings as indicated.

d. Breakers shall have a digital display for phase and ground current.

e. Breakers shall have a digital display for watts, vars, VA, kWh, kvarh, and kVAh.

f. Breakers shall have a digital display for phase voltage, and percent THD voltage and current.

g. Breakers shall have provisions for communication via a network twisted pair cable for remote monitoring and control.

h. All trip units shall be removable to allow for field upgrade.

i. Trip units shall have optional accessory to be able to comply with NEC240.87 by including energy reducing maintenance switching where necessary by code.

2.2.6 Electronic Trip Unit Central Monitor

Provide a microprocessor-based device designed to monitor and display parameters of the circuit breaker electronic trip units. The central monitor shall have the following features:

a. Alphanumeric display

b. Indication of circuit breaker status; tripped, open, closed.

c. Cause of circuit breaker trip.

d. Phase, neutral, and ground current for each breaker.

e. Energy parameters for each breaker.

f. Provisions for communicating directly to a remote computer.

2.2.7 Instruments

ANSI C39.1 for electrical indicating switchboard instruments, with 2 percent accuracy. The ac ammeters and voltmeters shall be a minimum of 50.8 mm square (2 inches square), with 4.36 rad (250-degree) scale. Provide single phase indicating instruments with flush-mounted transfer switches for reading three phases.

2.2.7.1 AC Ammeters

Transformer rated, 5-ampere input, 0 to Rated-ampere scale range, 60 hertz.

2.2.7.2 AC Voltmeters

Self-contained.

2.2.7.3 Instrument Control Switches

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.

2.2.8 Watt-hour and Digital Meters

2.2.8.1 Digital Meters

IEEE C37.90.1 for surge withstand. Provide true RMS, plus/minus one percent accuracy, programmable, microprocessor-based meter enclosed in sealed cases with a simultaneous three line, twelve value LED display. Meters shall have 16 mm (.56 inch), minimum, LEDs. Watt-hour meter shall have 16 mm (.56 inch), minimum, LEDs. The meters shall accept input from standard 5A secondary instrument transformers and direct voltage monitoring range to 600 volts, phase to phase. Programming shall be via a front panel display and a communication interface with a computer. Password secured programming shall be stored in non-volatile EEPROM memory.

Digital communications shall be Modbus RTU protocol via an RS485 serial port and an independently addressable RS485 serial port. 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 Total Harmonic Distortion (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.

a. 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.

b. Power Meter: Meter shall simultaneously display Watts, VARs, and selected KVA/PF.

Detected alarm conditions include over/under KVA, over/under PF, over/under VARs, over/under reverse power.

c. Volt Meter: Meter shall be selectable between simultaneous display of the three phases of phase to neutral voltages and simultaneous display of the three phases of the phase to phase voltages. Detected alarm conditions include over/under voltage, over/under voltage imbalance, over percent THD.

d. Ammeter: Meter shall simultaneously display phase A, B, and C currents. Detected alarm conditions include over/under current, over percent THD.

e. Digital Watthour Meter: Meter shall have a single selectable display for watts, total kilowatt hours (kWh) and watt demand (Wd). The meter shall have a Form C KYZ pulse output relay.

2.2.8.2 Electronic Watt-hour Meter

Provide a switchboard style electronic programmable watt-hour meter, semi-draw-out, semi-flush mounted, as indicated. Meter shall either be programmed at the factory or shall be programmed in the field. When field programming is performed, turn field programming device over to the Contracting Officer at completion of project. Meter shall be coordinated to system requirements and conform to IEEE C12.16 - Electricity-Metering Solid-State Electricity Meters.

a. Design: Provide meter designed for use on a 3-phase, 3 or 4-wire, 208Y/120 and 480Y/277 volt system with 3 current transformers. Include necessary KYZ pulse initiation hardware for Electrical Power Monitoring System (EPMS).

b. Coordination: Provide meter coordinated with ratios of current transformers and transformer secondary voltage.

c. Class: 20. Form: 9S Accuracy: +/- 1.0 percent. Finish: Class II.

d. Kilowatt-hour Register: 5 digit electronic programmable type.

e. Demand Register:

(1) Provide solid state IEEE C12.15.

(2) Meter reading multiplier: Multipliers shall not be acceptable.

(3) Demand interval length: shall be programmed for 15, 30, 60, minutes, all selectable, with rolling demand up to six subintervals per interval.

f. Meter fusing: Provide a fuse block mounted in the metering compartment containing one fuse per phase to protect the voltage input to the watt-hour meter. Size fuses as recommended by the meter manufacturer.

2.2.9 Current Transformers

IEEE C57.13. Transformers shall be single ratio, 60 hertz, to 5-ampere ratio, rating factor, with a metering accuracy class of 0.3 through.

2.2.10 TVSS surge protective devices

The TVSS units and all components shall be designed, manufactured and tested in accordance with the latest UL Standard (UL 1449 and UL 1283). Provide transient voltage surge suppression (TVSS) within the assembly as indicated. Locate suppressor on load side of the main protective device as close as possible to the phase conductors and ground bar. The main surge current per phase capacity shall be as indicated. The TVSS surge current shall be equally distributed to all MOV components to ensure equal stressing and maximum performance. The unit shall include EMI/RFI noise rejection filter and continuous monitoring, including fault detection.

2.2.11 Meter Fusing

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 manufacturer.

2.2.12 Heaters

Provide 120-volt heaters in each switchboard section. Heaters shall be of sufficient capacity to control moisture condensation in the section, shall be 250 watts minimum, and shall be controlled by a thermostat located in the section. Thermostat shall be industrial type, high limit, to maintain sections within the range of 15 to 32 degrees C 60 to 90 degrees F. Supply voltage for the heaters shall be obtained from a control power transformer within the switchboard. If heater voltage is different than switchboard 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 Terminal Boards

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.

All connections to the EPMS system shall be through the terminal boards. Each terminal board shall be accessible and viewable from the front of the equipment. Shop drawings shall indicate each wires landing position and color. Each wire shall be individually labeled for field connections.

2.3 IDENTIFICATION

Electrical identification devices placed on equipment shall match electrical distribution switchboards and as specified below:

2.3.1 Wire Marking

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 installed 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.

2.3.2 Nameplates:

Equipment must be labeled in accordance with the instructions in Section C – the Statement of Work, Section C.6.3 – Equipment Identification and Marking.

Provide samples for review.

2.3.3 Mimic Bus

A continuous mimic bus shall be applied to front of the enclosure, arranged in one-line diagram format, using symbols and lettered designations consistent with approved mimic-bus diagram.

(1) Mimic-bus segments shall be coordinated with devices in switchboard sections to which applied to produce a concise visual presentation of principal switchboard components and connections.

(2) Medium: Painted graphics.

(3) Color: Contrasting with factory-finish background.

2.4 WARNING SIGNS

Warning signs shall be provided with distinct letter color, contrasting with background.

2.5 SOURCE QUALITY CONTROL

2.5.1 Equipment Test Schedule

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

(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.

b. Provide as part of this submittal, provisions for 5 individuals to attend the first two factory witness tests for each of the three types of facilities. In total, there shall be 15 factory witness tests.

2.5.2 Switchboard Design Tests

IEEE C37.20.1 and UL1558.

2.5.2.1 Design Tests

Furnish documentation showing the results of design tests on a product of the same series and rating as that provided by this specification.

a. Short-circuit current test

b. Enclosure tests

c. Dielectric test

2.5.3 Switchboard Production Tests

NEMA PB 2 and UL 891. Furnish reports which include results of production tests performed on the actual equipment for this project. These tests include:

a. 60-hertz dielectric tests

b. Mechanical operation tests

c. Electrical operation and control wiring tests

d. Ground fault sensing equipment test

2.6 KIRK KEY INTERLOCKS

A. The switchboard manufacturer shall provide all key interlocks on circuit breakers as indicated on the drawings. Interlocks shall be part of the switchboard structure breaker compartment.

2.7 ACCESSORY COMPONENTS AND FEATURES

A. Furnish accessory set including tools and miscellaneous items required for overcurrent protective device test, inspection, maintenance, and operation.

B. Furnish portable test set to test functions of solid-state trip devices without removal from switchboard. Include relay and meter test plugs suitable for testing switchboard meters and switchboard class relays.

C. Furnish one portable, floor-supported, roller-based, elevating carriage arranged for movement of circuit breakers in and out of compartments for present and future circuit breakers.

D. Furnish overhead circuit-breaker lifting device, mounted at top front of switchboard, with hoist and lifting yokes matching each draw-out circuit breaker.

E. Spare-Fuse Cabinet: Suitably identified, wall-mounted, lockable, compartmented steel box or cabinet. Arrange for wall mounting.

F. Fungus Proofing: Permanent fungicidal treatment for switchboard interior, including instruments and instrument transformers.