SECTION TEMPORARY GENERATOR QUICK CONNECTION SWITCHBOARD

Transcription

1 SECTION TEMPORARY GENERATOR QUICK CONNECTION SWITCHBOARD PART 1 - GENERAL 1.1 DESCRIPTION A. This section specifies the furnishing, installation, connection, and testing of a low-voltage temporary Generator Quick Connection Switchboard, indicated as switchboard in this section. B. Generator Quick Connection Switchboard shall be designed to allow quick and safe connection of a mobile generator set to facilities experiencing loss of power. Permanent installation and connection of the switchboard to the facility power distribution system will minimize any unplanned power outages. 1.2 RELATED WORK (NOT USED) 1.3 QUALITY ASSURANCE A. Manufacturer: For equipment required for the work of this section, provide product which is the responsibility of one manufacturer. 1.4 FACTORY TESTS A. Perform factory and installation tests in accordance with applicable NEC, NEMA and UL requirements. 1.5 SUBMITTALS A. Product Data: Submit manufacturer's printed product data. B. Drawings: Submit shop drawings for approval. Include components, materials, finishes, detailed plan and elevation views, required breaker and cam type openings, anchors, and accessories. 1.6 APPLICABLE PUBLICATIONS A. Publications listed below (including amendments, addenda, revisions, supplements and errata) form a part of this specification to the extent referenced. Publications are referenced in the text by basic designation only. B. National Electrical Manufacturer's Association (NEMA): PB Deadfront Distribution Switchboards PB Proper Handling, Installation, Operation, and Maintenance of Deadfront Distribution Switchboards Rated 600 Volts or Less C. National Fire Protection Association (NFPA): National Electrical Code (NEC) D. Underwriters Laboratories, Inc. (UL): Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit-Breaker Enclosures Switchboards

2 PART 2 - PRODUCTS 2.1 GENERAL A. Shall be in accordance with NEMA, NFPA, UL, as shown on the drawings, and have the following features: 1. Switchboard shall be a complete, grounded, continuous-duty, integral assembly, dead-front, dead-rear, self-supporting, outdoor type switchboard assembly. Incorporate devices shown on the drawings and all related components required to fulfill operational and functional requirements. 2. Switchboard shall be supplied as a complete system and shall include all the necessary components and equipment to accommodate described system operation unless otherwise noted. 3. Switchboard shall conform to the arrangements and details shown on the drawings. 4. Switchboards shall be assembled, connected, and wired at the factory so that only external circuit connections are required at the construction site. 5. All non-current-carrying parts shall be grounded. 6. Packaging shall include the switchboard to be shrink wrapped and mounted to a skid and to provide adequate protection against rough handling during shipment. 2.2 HOUSING A. Frames and enclosures: 1. Enclosure shall be designed according to NEMA 3R standard for outdoor operation which includes a sloped roof. 2. Floor standing, manufactured from Carbon Steel, Aluminum, or Stainless Steel with: 1. Frame - 11 gauge 2. Roof and Front Door - 12 gauge 3. Rear and Side Sheets - 14 gauge 3. Enclosure shall be of rigid frame construction. 4. The enclosure shall include a full front door with a two point latch to access permanent cables and an integral lower flip open door to allow cable connection of the portable generator set. 5. The access door shall have full height left or right hinge to allow easy access to the switchboard cam-lok type connections for cable connections to the mobile generator or site loads. The bottom portion of the door shall have an additional horizontal hinge to allow for the door to be closed while cables are connected. The hinged bottom portion of the door shall flip up to the extent needed to accommodate the cable entry/exit while providing the drip shield for the components inside of the enclosure. 6. Stainless Steel exterior hardware shall be utilized. 7. One (1) padlockable handle on full front door and One (1) padlockable handle on lower flip door. 8. Internal Climate Control to include two (2) Space Heaters shall be controlled by Thermostat and Humidistat; requires customer supplied 120VAC, 10A circuit. 9. For ease of on-site cable connections and maintenance an open bottom, removable full depth side sheets and rear sheets shall be provided. 10. For ease of the switchboard service, maintenance and future upgrades, all the support structures, braces and cover sheets for the circuit breakers, main bus, neutral bus, ground bus and circuit breakers runback extension bus shall be removable and attached to the frame via bolts

3 B. Markings and Nameplates: 1. Each switchboard section shall have a label permanently affixed to it, listing the following information: Name of manufacturer, system voltage, ampacity, type, and manufacturer's shop order number. 2. Switchboard shall bear a UL891 listing mark as Type 3R equipment for outdoor use in Carbon Steel, Aluminum, or Stainless Steel construction. 3. The nameplates shall be produced from clear textured polycarbonate, laminated on high performance pressure sensitive adhesive. The printing shall be done on the interior surface of the laminate to avoid scratching or other deterioration of text. The lettering shall be white on black background. 4. Each control switch, indicating light or other component mounted on the inner panel shall be identified by a nameplate. C. Finish: 1. One (1) powder coat of ANSI 61 Light Gray shall be applied to all interior and exterior surfaces. 2. The final finish must be exterior rated for NEMA 3R use. 2.3 BUSES A. Silver plated copper busbar shall be used for permanent cable connections to the facility via the (removable) side or rear sheets of enclosure. 2.4 CAM-LOK TYPE CONNECTORS A. Cam-lok type connectors shall be NEMA 3R rated so as to be used in direct rain should the door become open. B. Each color coded, male Cam-lok E1016 compatible single pole receptacles with cover shall be color coded per: 1. A phase Brown 2. B phase Orange 3. C phase Yellow 4. Neutral White 5. Ground Green 2.5 CIRCUIT BREAKERS A. Temporary Generator Circuit Breaker: 1. Switchboard shall be equipped with One (1) Manually Operated Circuit Breaker shall be (Fixed Mount), 100% Rated, Insulated Case Circuit Breaker, with (LI) solid state trip unit, stored energy mechanism, and a and b aux. contacts. 2. Interrupting Rating: a. For a circuit breaker rated under 2500A, interrupting rating shall be (65kA)@480VAC. b. For a circuit breaker rated at 2500A and up, interrupting rating shall be (100kA)@480VAC. 3. Circuit Breaker Shunt Trip - 120VAC shall be provided. B. Circuit breaker ratings shall be as indicated. 2.6 ANNUNCIATION A. All indicating lights shall be located behind full front door. B. All indicating lights shall be of high visibility, LED type with lenses of at least 1 inch outside diameter with service life of 100,000 hours at 77 F temperature

4 2.7 GROUND FAULT PROTECTION A. Include in the switchboard, ground fault protection and indication equipment. All parts of the systems specified shall be UL Listed. B. All ground fault protection and indication equipment shall be factory installed, wired and tested by the switchboard manufacturer. 2.8 PHASE ROTATION MONITORING A. Phase Rotation Monitoring shall ensure portable genset phase rotation matches that of the facility. B. An indicating light shall provide visual assurance of correct phasing. C. Circuit breaker shall be prevented from being closed if phase rotation is incorrect by operating the shunt trip coil. D. Instructions to easily fix incorrect phase rotation shall be included on a label inside each panel. 2.9 INTERLOCKING A. Interlock between facility main service circuit breaker and temporary generator circuit breaker shall be to prevent inadvertent paralleling of the Utility and Temporary Generator. B. The Kirk Key shall be removed from the facility circuit breaker (customer supplied Kirk Key lock) to hold circuit breaker in open position, and to be inserted in the Temporary Generator Breaker to allow connection of the generator to the facility. C. Customer shall provide site specific Kirk Key information ALTERNATE CONNECTIONS A. Alternate busbar connections with NEMA standard hole pattern and mechanical lugs shall be provided for use in the event a mobile genset is used that does not have cables with Cam-lok E1016 compatible plugs. B. Alternate busbar connections shall be accessible through a removable piece of sheet metal. Cables shall enter the switchboard via the integral lower flip door to connect to the alternate connection area SEQUENCE OF OPERATION A. Should the Utility fail, the facility s main breaker would be manually opened and the portable generator set would be connected to the Cam-lok type receptacles in the panel located behind lower flip door. B. The Temporary Generator Connection Circuit Breaker would be manually closed to allow the temporary generator to provide electrical power to the facility load. C. Upon restoration of the Utility s power, the Temporary Generator Connection Circuit Breaker would be manually opened to allow for the closing of facility s main breaker to restore the facility to the normal Utility power source

5 PART 3 - EXECUTION 3.1 INSTALLATION A. Install switchboards in accordance with the NEC, as shown on the drawings, and as recommended by the manufacturer. ---END