Section 26 24 16.doc

Modular Office Building No. 365

2016005

SECTION 26 24 16

PANELBOARDS

PART 1 GENERAL

Section 26 00 00 BASIC ELECTRICAL MATERIALS AND METHODS applies to work specified in this section.

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

NEMA 250

(2014) Enclosures for Electrical Equipment (1000 Volts Maximum)

NEMA PB 1

(2011) Panelboards

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 70

(2014; AMD 1 2013; Errata 1 2013; AMD 2 2013; Errata 2 2013; AMD 3 2014; Errata 3-4 2014; AMD 4-6 2014) National Electrical Code

UNDERWRITERS LABORATORIES (UL)

UL 489

(2013; Reprint Mar 2014) Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit-Breaker Enclosures

UL 67

(2009; Reprint Apr 2015) Standard for Panelboards

1.2 SUBMITTALS

Government approval is required for submittals with a "G" designation; submittals not having a "G" designation are for information only. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-02 Shop Drawings Detail Drawings G Outline Drawings G SD-03 Product Data Panelboards; G SD-06 Test Reports Continuity Tests Insulation Tests SD-07 Certificates Statements SD-08 Manufacturer's Instructions Panelboards G

1.3 MAINTENANCE MATERIAL SUBMITTALS

Submit manufacturer's instructions for panelboards including special provisions required to install equipment components and system packages. Special notices detail impedances, hazards and safety precautions.

1.4 QUALITY ASSURANCE

Ensure the manufacturer of the assembly is the manufacturer of the major components within the assembly and has produced similar electrical equipment for a minimum period of five years.

Provide statements signed by responsible officials of a manufacturer of a product, system, or material attesting that the product, system or material meet specified requirements. Ensure statements are dated after the award of this contract, with the project name, and a list of the specific requirements which it is intended to address.

PART 2 PRODUCTS

2.1 COMPONENTS

2.1.1 Panelboards

Manufacturer shall be Square D.

Submit detail drawings for the panelboards consisting of fabrication and assembly drawings for all parts of the work in sufficient detail to enable the Government to check conformity with the requirements of the contract documents. Include within drawings details of bus layout.

Ensure outline drawings for panelboards indicate overall physical features, dimensions, ratings, service requirements, and weights of equipment.

Totally enclose power-distribution panelboards and lighting and appliance branch-circuit panelboards in a steel cabinet, main-lug or dead-front circuit breaker type with copper buses, surface- or flush-mounted as indicated. Ensure panelboards conform to NEMA PB 1 and UL 489. Provide branch circuit panels with buses fabricated for QO or I-Line circuit breakers.

Voltage and current rating, number of phases, and number of wires is as indicated. Provide four-wire distribution panelboards and lighting and appliance branch-circuit panelboards with an isolated full-capacity neutral bus. Ensure panelboards are rated for 120/208-volt, three-phase, 60-hertz current.

Provide three-phase, 4-wire distribution lighting and branch circuit panelboards with an isolated full-capacity bus providing spaces for single-pole circuit breakers/switches and spaces indicated as spare.

Provide panelboards with a separate grounding bus bonded to the enclosure. Ensure grounding bus is a solid bus bar of rectangular cross section equipped with binding screws for the connection of equipment grounding conductors.

Ensure each panelboard, as a complete unit, has a short-circuit current rating equal to or greater than the integrated equipment rating shown on the panelboard schedule or as indicated.

Ensure panelboards and main lugs or main breaker have current ratings as shown on the panelboard schedule.

Bus bar connections to the branch circuit breakers are the "distributed phase" or "phase sequence" type. Single-phase, three-wire panelboard busing is such that when any two adjacent single-pole breakers are connected to opposite phases, two-pole breakers can be installed in any location. Three-phase, four-wire busing is such that when any three adjacent single-pole breakers are individually connected to each of the three different phases, two- or three-pole breakers can be installed at any location. Ensure current-carrying parts of the bus assembly are plated. Mains ratings are as shown.

For mechanical lugs furnished with panelboards, use cast copper or copper alloys of sizes suitable for the conductors indicated.

Use boxes with the manufacturer's standard knockouts and are galvanized code-gage sheet steel. Fronts are of code-gage sheet steel furnished with hinged doors.

Ensure panelboard enclosures are NEMA 250, Type 1. Provide enclosures with hinged fronts and corrosion-resistant steel pin-tumbler cylinder locks.

Panelboard enclosure for the new main distribution panel shall be NEMA 250, Type 3R.

Key the locks alike and properly tagged. Provide two keys for each enclosure to the Contracting Officer.

Finish panelboards with fast drying enamel. Finish color is No. 61 gray conforming to FED-STD-595.

2.1.2 Circuit Breakers

Provide QO style molded-case for the 200A main-lug, 30 circuit, 22 kaic panel for the trailer branch circuits. Frame and trip ratings as indicated.

Provide I-Line circuit breakers for new panel “MDP” rated 65 kaic. Provide QG frame breakers with the trip ratings as indicated.

In branch circuit panelboards, ensure branch circuit breakers feeding convenience outlets have sensitive instantaneous trip settings of not more than 10 times the trip rating of the breaker to prevent repeated arcing shorts resulting from frayed appliance cords. Provide UL listed single 20-ampere circuit breakers as "Switching Breakers" at 120 volts ac. Provide UL Class A (5-milliampere sensitivity) ground fault circuit protection on 120-volt ac branch circuit as indicated. This protection is an integral part of the branch circuit breaker that also provides overload and short-circuit protection for branch circuit wiring. Tripping of a branch circuit breaker containing ground fault circuit interruption is not to disturb the feeder circuit to the panelboard. A single-pole circuit breaker with integral ground fault circuit interruption requires no more panelboard branch circuit space than a conventional slide pole circuit breaker.

When multiple wires per phase are specified, furnish the circuit breakers with connectors made to accommodate multiple wires.

Ensure circuit breaker spaces called out on the drawings are complete with mounting hardware to permit ready installation of the circuit breakers.

2.1.3 Meter

2.1.3.1 Revenue Accurate Multifunction Power Meter with harmonics, waveform recording, data logging and set point control.

Provide a high accuracy power meter meeting the requirements set forth in this specification. Note any exceptions taken with a detailed description.

a. Meter shall be Square D Type PM8000 Power Meter, with options and features described in this section.

Meet the following recognized standards for application in hardened environments.

a. Device must meet all international standards for Safety and Construction applicable to this type of device:

1. UL 3111

2. CAN/CSA C22.2 No. 1010-1

3. IEC 1010-1

4. CE Marked

b. Device must meet the following international standard for Electromagnetic Immunity applicable to this type of device:

1. IEEE C37.90-1989 IEEE Standard Surge withstand capability Tests for Protective Relays and Relay Systems (ANSI) (All inputs except for the network communication port).

c. Device must meet the following international standard for Electromagnetic Emissions:

1. FCC: Part 15 of FCC Rules for a Class A digital device.

d. Device must provide measurement accuracy that meets or exceeds ANSI C12.16 Class 10

e. Basic hardware requirements of the Multifunction Power Meter are as follows:

1. Voltage Inputs: The device shall have three voltage inputs. The voltage inputs shall be capable of measuring from 0-347Vrms (line-to-neutral) or from 0-600Vrms (line-to-line). The device shall have provisions for direct connection (require no PT’s) for Wye (Star) systems up to 347/600 VAC. For higher voltage systems, PT’s with 120 VAC, 277 VAC or 347 VAC secondaries shall be supported. All voltage inputs shall provide:

a) 1500VAC continuous surge protection.

b) 25% of full-scale voltage overrange capability.

2. Current Inputs: The device shall have three 5A nominal (10A full scale) current inputs. All current inputs shall be transformer coupled and accept CTs with 5A nominal (10A full scale) outputs. All current inputs shall provide:

a) 200A surge protection for 0.5 second.

3. Power Supply: The PMAC instrument shall be powered from 90VAC to 415VAC @ 50 to 60Hz, or 120VDC to 300 VDC.

4. On-board I/O: The device supplied shall have the following built-in I/O for this project:

a) Six digital (status) inputs and configured to indicate status of the Main Circuit Breaker in Panel MDP.

b) Four (4) analog I/O user selectable from:

1. Four 0-20 mA inputs and four 0-20 mA outputs.

2. All analog inputs and/or outputs are accurate to within 0.3% of full scale.

5. Communications

a) Provide the following built-in ports in the purchased configuration. All communication ports shall be standard technology, as defined by the IEEE. No communication interfaces not defined by the IEEE shall be accepted:

1. Optional communications shall be available to provide serial, Dual Port Ethernet.

2. An Ethernet port that has EtherGate capability - a gateway that allows the host system to communicate (through the Ethernet port) to additional metering devices connected to the card’s COM2 RS-485 port. The device shall have provisions for an internal Ethernet port compatible with 10Base-T Ethernet. The Ethernet port shall be terminated using an RJ-45 connector.

b) All communications ports in this section must support all of the following communication capabilities, independently configurable:

1. ION protocol

2. Modbus RTU protocol

3. Modbus TCP protocol, ION TCP, DNP3 TCP, IEC 61850.

4. DNP 3.0 protocol

5. Shall provide simultaneous access through all communications ports to any measured or derived parameter.

6. Protocols must be field configurable from the front display or via communications ports. This must be capable of being accomplished without resetting the meter, or interrupting its operation in any way.

7. Shall have provisions for flash firmware that can be field upgraded through any communications port, without de-commissioning the instrument or de-energizing the circuit or equipment. The firmware upgrade procedure shall be robust and able to recover from power failure during an upgrade.

8. Support time synchronization broadcast messages from a host computer system.

f. Meter Integration shall be performed by the Campus Critical System Integrator. Vendor shall be DVL Incorporated, 115 Sinclair Road, Bristol PA 19007. POC is Steve Graham, Sales Manager (C) 215-284-8501, (O) 215-826-1134.

2.1.4 Directory Card and Holder

Mount a directory card on the inside of hinged fronts and doors 0.76 millimeter (0.030-inch) thick minimum plastic in a metal frame, with spaces for circuit numbers, outlets controlled, and room numbers. The directory card identifies each branch circuit with its respective and numbered circuit breaker.

2.1.5 Precautionary Label

To ensure persons are aware of immediate or potential hazard in the application, installation, use, or maintenance of panelboards, conspicuously mark each panelboard on the trim or dead front shield with the text (or equivalent) DANGER symbol. If the panel is supplied with a door, ensure the label is visible when the door is in the open position.

2.2 FACTORY TESTING

Test complete panelboards in accordance with UL 67.

PART 3 EXECUTION

3.1 INSTALLATION

Install panelboards as indicated and in accordance with the manufacturer's instructions. Fully align and mount panels so that the height of the top operating handle does not exceed 1800 millimeter (72 inches) above the finished floor.

Ensure directory-card information is typewritten in capital letters to indicate outlets controlled and final room numbers served by each circuit and is mounted in holders behind protective covering.

3.2 SITE TESTING

Do not energize panelboards until the recorded test data has been submitted to and approved by the Contracting Officer.

Provide test equipment, labor, and personnel as required to perform the tests as specified. Conduct continuity tests using a device listed for the test being performed.

Demonstrate each panelboard enclosure key operates the enclosure locks in the presence of the Contracting Officer.

Conduct continuity and insulation tests on the panelboards after the installation has been completed and before the panelboard is energized.

Conduct insulation tests on panelboards rated 300 volts or less using a 500-volt minimum insulation-resistance test set. Record readings after 1 minute and until the reading is constant for 15 seconds. Ensure resistance between phase conductors and between phase conductors and ground is not less than 25 megohms.

Record test data and include the location and identification of panelboards and megohm readings versus time.

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