26 18 38 (16445) - Industrial Air Circuit Breaker ...



Section Cover Page | |

| Section 26 18 38 |

|Industrial Air Circuit Breaker |

|2010-11-01 Distribution Centres |

Use this Section to specify requirements for industrial air circuit breaker distribution centres for projects where the ampacity of the building service is:

.1 1200 Amperes or larger at 120/208/240 volts,

.2 800 Amperes or larger at 277/480 volts,

.3 800 Amperes or larger at 347/600 volts.

Where fault levels at service entrance are in excess of 50,000 Amperes symmetrical, fuses may be required for current limiting.

Include Section 26 27 13 - Utility Metering when this Section is used.

This Master Specification Section contains:

.1 This Cover Sheet

.2 Data Sheet - Reference Documents

.3 Data Sheet - Sample Schedule

.4 Specification Section Text:

1. General

1.1 Related Requirements

1.2 Reference Documents

1.3 Source of Supply

1.4 Product Data and Shop Drawings

1.5 Coordination

1.6 Delivery, Storage and Handling

2. Products

2.1 Industrial Air Circuit Breaker Distribution Centre

3. Execution

3.1 Installation

3.2 Testing

3.3 Distribution Centre Schedule

Industrial Air Circuit Breaker Main Distribution Centre Schedule 347/600 Volts, 3 Phase, 4 Wire

| | | | | | | |

|Load Size |Brkr Frame |Poles |Trip |[Fuses] |GFP |Feeder |

| |(Amps) | | | | | |

| | | | | | | |

|Main | | | | | | |

|Breaker |2000 |3 |1600 | 1600 |Yes |4-100 mm |

| | | | | | |4#500 MCM |

| | | | | | |RW90 X-link |

| | | | | | |1-100 mm EC |

| | | | | | | |

|Busduct | | | | | | |

|No. 1 |800 |3 |800 |-- |-- |Bus |

| | | | | | |connection |

| | | | | | | |

|MCC No. 1 |800 |3 |400 |-- |-- |63 mm |

| | | | | | |3#300 MCM |

| | | | | | |RW90 X-link |

| | | | | | | |

|Transformer | | | | | | |

|T1 |800 |3 |400 |-- |-- |2-50 mm |

| | | | | | |4#3/0 |

| | | | | | |RW90 X-link |

Note: Breaker Spaces: 2 - 3 pole, 800 Amp frame size.

END OF DATA SHEETS

1. General

1.1 related requirements

.1 SUBMITTAL PROCEDURES: SECTION 01 33 00.

.2 LEED Requirements: Section 01 35 18.

.3 Waste Management and Disposal: Section 01 74 19.

.4 Cast-In-Place Concrete: Section 03 30 00.

.5 Electrical General Requirements: Section 26 00 10.

.6 Electrical Operation and Maintenance Data: Section 26 01 10.

.7 Electrical Spare Parts and Maintenance Materials: Section 26 01 90.

.8 Electrical Identification: Section 26 05 53.

.9 Testing, Adjusting and Balancing of

Electrical Equipment and Systems: Section 26 08 10.

.10 Overcurrent Protective Devices: Section 26 18 16.

.11 Utility Metering: Section 26 27 13.

.12 Main Distribution Centre Metering: Section 26 27 14.

1.2 REFERENce documents

.1 CANADIAN NATIONAL STANDARDS/CANADIAN STANDARDS ASSOCIATION (CAN/CSA)

|.1 |CAN/CSA-C22.2 No. 31-M89 (R2000) |Switchgear Assemblies |

1.3 SOURCE OF SUPPLY

.1 ALL INDUSTRIAL AIR CIRCUIT BREAKER DISTRIBUTION CENTRES SHALL BE BY A SINGLE MANUFACTURER.

1.4 PRODUCT DATA AND SHOP DRAWINGS

.1 COMPLY WITH REQUIREMENTS OF SECTION 26 00 10.

.2 Provide manufacturer's product data for all systems and components.

.3 Provide wiring diagrams of distribution centres indicating interrelationship between:

.1 Shunt trips.

.2 Ground fault protection.

.3 Utility metering.

.4 Distribution centre metering.

.5 Key interlocks.

.6 Remote control features.

.7 [                     ].

.8 Other major elements.

Clearly differentiate between factory wiring and field wiring.

1.5 COORDINATION

.1 COORDINATE SIZE AND LOCATION OF CONCRETE HOUSEKEEPING BASES WITH WORK SPECIFIED IN SECTION 03 30 00.

1.6 DELIVERY, STORAGE AND HANDLING

.1 SEPARATE WASTE MATERIALS FOR [REUSE] [AND] [RECYCLING] IN ACCORDANCE WITH SECTION 01 74 19 - WASTE MANAGEMENT AND DISPOSAL.

2. Products

2.1 INDUSTRIAL AIR CIRCUIT BREAKER DISTRIBUTION CENTRE

.1 INDUSTRIAL AIR CIRCUIT BREAKER DISTRIBUTION CENTRE:  TO CAN/CSA-C22.2 NO. 31 AND AS FOLLOWS:

.1 Bus Characteristics:

.1 Capacity:  [1200] [     ] Amperes.

.2 Construction:  rectangular section copper [silver] [tin] plated joints.

.3 Bracing:  [50,000] [      ] Amperes symmetrical.

.4 Bus arrangement, viewing distribution centre from front:

.1 Left Terminal: Phase A

.2 Centre Terminal: Phase B

.3 Right Terminal: Phase C

.5 Neutral:  full capacity, solid neutral design.

.6 Ground bus:  copper, full length of distribution centre.

.2 Enclosure:

.1 Prefinished painted sheet steel.

.2 Uniform height depth and width.

.3 Separate compartment to house [main breaker and] each feeder breaker.

.4 Bushed ports or buspads in barriers.

.5 Component arrangement as detailed on Drawings.

.6 Separate barriered compartment for metering transformers.

SPEC NOTE:  Confirm space requirements for metering transformers with Utility.

.7 Each circuit breaker compartment complete with pressure relief vent.

.8 [Drip cover.]

SPEC NOTE:  Specify drip cover only when distribution centre is installed in an area with sprinklers.

.3 Trim:

.1 Sectionalized.

.2 Hinged cover with sealing studs over metering transformer section.

.3 Hinged cover for each industrial air circuit breaker compartment.

.4 [Hinged door on door construction] [Hinged] cover dished back to breaker face with [no] [hinged locking] door over moulded case feeder breaker section.

SPEC NOTE:  Specify hinged door over moulded case feeder breaker section when installed in an area with sprinklers.

.4 Overcurrent Protective Devices:  as specified in Section 26 18 16, indicated in schedule and as follows:

.1 Main breaker:  [fused] drawout.

.2 Feeder breakers:  draw-out.

.5 Accessories:

.1 Provide following accessories as part of distribution centre:

.1 [Spring charging crank.]

.2 [Racking handle.]

.3 [Breaker lifting device, cantilever type with continuous rail on top of main distribution centre.]

.4 [Breaker lifting yoke for each breaker frame size installed.]

.5 [Metal equipment storage cabinet to house all accessories.]

3. Execution

3.1 INSTALLATION

.1 INSTALL DISTRIBUTION CENTRE ON 100 MM CONCRETE HOUSEKEEPING PAD.

.2 Tighten electrical connectors and terminals, including screws and bolts, in accordance with equipment manufacturer's published torque tightening values.

.3 Connect main service entrance cable(s) to line bus stubs in main breaker cubicle.

.4 Connect loads to feeder breakers as specified in Distribution Centre Schedules.

.5 Adjust operating mechanisms for free mechanical movement.

.6 Touch-up scratched or marred surfaces to match original finish.

.7 Breaker sizes and identification as specified in Distribution Centre Schedules.

3.2 TESTING

.1 COMPLY WITH REQUIREMENTS OF SECTION 26 08 10.

3.3 DISTRIBUTION CENTRE SCHEDULE

INDUSTRIAL AIR CIRCUIT BREAKER MAIN DISTRIBUTION CENTRE

Bus [   ] Amperes, [   ] Volts [   ] Phase [   ] Wire

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|Load |Brkr. Frame |Poles |Trip |[Fuses] |GFP |Feeder |

| |Size (Amps) | | | | | |

| | | | | | | |

|[   ] |[         ] |[   ] |[  ] |[    ] |[  ] |[    ] |

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Industrial Air Circuit Breaker Sub-Distribution Centre

Bus [   ] Amperes, [   ] Volts [   ] Phase [   ] Wire

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|Load |Brkr. Frame |Poles |Trip |[Fuses] |GFP |Feeder |

| |Size (Amps) | | | | | |

| | | | | | | |

|[   ] |[         ] |[   ] |[  ] |[    ] |[  ] |[    ] |

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SPEC NOTE:  Delete column for fuses when fuses are not used.

SPEC NOTE:  Delete column for ground fault protection when system is not specified.

END OF SECTION

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