Download SSP 682S12

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
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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
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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
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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.
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