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POWER SUPPLY CABINETS - Item No. Special Provision No. 682S12 1. September 2010 SCOPE This Special Provision covers the requirements for the installation of Power Supply Cabinets. 2. REFERENCES This Special Provision refers to the following standards, specifications, or publications: Ontario Provincial Standard Specifications, Construction: OPSS 603 OPSS 604 OPSS 609 Installation of Ducts Installation of Cable Grounding Canadian Standards Association: CSA Standard C22.2 No. 211.2-06 CSA Standard C22.2 No. 29-M1989 CSA Standard C22.2 No. 94-M91 CSA Standard C22.2 No. 5-02 CSA Standard C22.2 No. 47-M90 Rigid PVC (Unplasticized) Conduit Panelboards and Enclosed Panelboards Special Purpose Enclosures; Industrial Products Molded-Case Circuit Breakers, Molded-Case Switches and CircuitBreaker Enclosures Air Cooled Transformers (Dry Type) American Society for Testing and Materials (ASTM): ASTM A-666-03 ASTM A480/A480M-06b Standard Specification for Annealed or Cold-Worked Austenitic Stainless Steel Sheet, Strip, Plate, and Flat Bar Standard Specification for General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet and strip National Electrical Manufacturers Association (NEMA): NEMA 250 Enclosures for Electrical Equipment (1000 Volts Maximum) – NEMA 4X Type Others: Ontario Electrical Safety Code 3. DEFINITIONS – Not Used 4. DESIGN AND SUBMISSION REQUIREMENTS 4.1 Submission Requirements September 2010 Pg. 1 of 4 SSP682S12 The Contractor shall submit the shop drawings and specification sheets for the power supply cabinet internal components to the Contract Administrator prior to ordering. Manufacturer part numbers and description of all equipment being supplied shall be included. 5. MATERIALS 5.1 Power Supply Cabinet Power supply cabinet - shall be NEMA 4X, stainless steel Type 304 - 2B, 14-gauge, in accordance with applicable ASTM standards. 1220mm Height x 915mm Width x 405mm Depth, service type with hasp to accommodate an Owner provided padlock. Pedestal shall be formed type 304 – 2B, 12 Gauge, stainless steel to suit the power supply cabinet. Power supply cabinet shall include moisture absorbing dessicant and vapour corrosion inhibitor. Power supply cabinet shall include lightning arrestor rated for the size of the service. The splitter enclosure shall comply with C22.2 No 94-M91 Special Purpose Enclosures. Transformers shall be EP dry type, 600 – 240/120V manufactured in accordance with CSA standard C22.2 No. 47 -M90 and CSA Standard C22.2 No 94-M91 Special purpose enclosures. Primary breakers shall be integral fused breaker, Tri-Pac or equivalent, combination interrupting rating of 200KA, 600V. The wire size form the splitter to the primary breaker shall comply with the ESA standards. Ampere rating of the breakers shall be as follows: a) for 5 kVA, 15A; b) for 10 kVA, 20A; c) for 15 KVA, 30A; d) for 25KVA, 50A. Secondary breakers 120/240 V, shall be molded case circuit breakers complying with the standards as shown above, enclosed, with AC Interrupting Rating rms Symmetric Amperes not less than 10KA, ampere rating from 15A to 100A. Distribution panelboard shall be in accordance with CSA C22.2 No. 29-M1989 and CSA C22.2 No. 94-M91. Loadcenters designed for residential or light commercial usage are not acceptable. The main lug shall be 225A for 25KVA transformers and 100A for 15KVA or 10KVA transformers. SCCR or AC interrupting Capacity rms Symmetrical Amperes shall be 10-22KA fully rated. It shall allow not less than 12 branch circuits. The Branch breakers shall be molded case circuit breakers in accordance with CSA C22.2 No. 5, with AC Interrupting Rating rms Symmetric Amperes not less than 10KA, ampere rating from 15A to 100A, physically fit inside the panelboard. 5.2 September 2010 Cables and Cable Connectors Pg. 2 of 4 SSP682S12 Low voltage cables and ground wire between the power supply cabinet and the controller cabinet shall be minimum #6 AWG, RWU90 and shall meet the requirements of OPSS 604, OPSS 609 and Ontario Electrical Safety Code. Cables and cable connectors shall meet the requirements of OPSS 604. 5.3 Grounding Materials Grounding materials shall meet the requirements of OPSS 609. 5.4 Conduit and Fittings Rigid PVC conduit and fittings for the installation of pole-mounted equipment shall meet the requirements of CSA Standard C 22.2 No. 211.2. Non-metallic liquid-tight flexible conduits and connectors shall meet the requirements of OPSS 603. 6. EQUIPMENT – Not Used 7. CONSTRUCTION 7.1 Assembly of Power Supply Cabinets The Contractor shall assemble all components within the cabinets using applicable code clearance rules. 7.2 Padlocks The Contractor shall install padlocks supplied by the Owner. 7.3 Cables and Fuses Cables, terminations and connections shall be installed in accordance with the requirements of OPSS 604. Service cables, from the point of service connection to the main disconnection device shall meet the requirements of Ontario Electrical Safety Code. Wiring within the cabinets shall be installed in liquidtight flexible conduits. 7.4 Grounding All pad mounted equipment shall be grounded by means of ground wire jumpers connected between the equipment ground bus and the exterior ground grid. Lightning arrestors shall have the ground cable connected securely to the equipment ground bus. The neutral bus of the main disconnection device or the secondary neutral terminal of the transformer shall be bounded to the equipment ground bus. The system ground wire shall be connected to the equipment ground bus. All grounding work shall be carried out in accordance with the requirements of OPSS 609. 7.5 Quality Control Pre-installation Testing and Inspection September 2010 Pg. 3 of 4 SSP682S12 The Contractor shall inspect the power supply equipment to ensure that it meets the requirements of the Contract. In particular, and without limiting the foregoing, the Contractor shall perform a visual inspection of all the power supply equipment prior to its delivery. The Contractor shall as a minimum inspect the following components as many as applicable to ensure that they meet the requirements of the Contract: General Appearance Insulation Transformers Wires and Connectors Labelling Switches Any other components Grounding Connections Grounding and Bonding Materials Enclosures Materials Cabinet Materials Doors and Latching Mechanisms Conduits and Tubing Panelboards Contactors Thermostats Exhaust Fans Barriers/Raceways Circuit Breakers Proof of Performance Testing and Inspection The Contractor shall perform visual inspection on the installed power supply equipment, inspecting all components, as listed under Pre-installation Testing and Inspection. In addition, the Contractor shall perform Low Voltage System tests on wiring of the equipment in conformance to OPSS 604. The Contractor shall perform all tests on grounding of equipment in conformance with OPSS 609. The inspection, testing, and test results shall be witnessed by the Quality Verification Engineer. The Quality Verification Engineer shall issue a Certificate of Conformance that the work has been inspected and tested, and that the material and installation are in General Conformance with the requirements of the Contract. 8. QUALITY ASSURANCE – Not Used 9. MEASUREMENT FOR PAYMENT Measurement of the number of Power Supply Cabinets is by Plan Quantity as may be revised by Adjusted Plan Quantity. The unit of measurement is each. 10. BASIS OF PAYMENT Payment at the Contract price for the above tender item shall be full compensation for all labour, Equipment and Materials required to do the work. Payment shall include all costs of installation of all cabinets, cabinet components, wiring, internal conduits, grounding, and pedestals. WARRANT: September 2010 All Contracts with this tender item. Pg. 4 of 4 SSP682S12