Attachment 2 Spare Station Service Padmount.pdf
PDF 305 KB Posted
- Attached to
- Station Service Transformers for North Dakota
- Solicitation number
- 89503425QWA001064
About this file
This document is a detailed specification for a 300kVA padmount transformer for the Western Area Power Administration's North Dakota Maintenance Office. The transformer specifications include three-phase, 60Hz operation with a 65°C rise, featuring a 13.2kV Delta primary voltage and 240/120V Red Leg Delta secondary voltage. Key technical details include six primary bushing wells with insulated plugs, 125kV primary and 30kV secondary Basic Impulse Level (BIL), and electrical grade mineral oil insulation.
The transformer comes with multiple accessories including a liquid temperature gauge, liquid level gauge, drain valve, enclosure grounding pads, padlock provisions, and a pressure relief device. The unit will be painted ANSI 70 gray and includes a primary de-energized tap changer with ±2.5% and ±5% taps. Delivery is specified to the Western Area Power Administration in Bismarck, ND, with the shipper required to contact Bradley Seely at 701-221-4501 at least seven days prior to delivery. Deliveries are restricted to 8:00 a.m. and 4:00 p.m. Monday through Thursday, excluding government holidays.
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| File | Type | Posted |
|---|---|---|
| 89503425QWA001064.pdf | ||
| Attachment 1 BSM Transformers Combined Specification.pdf |
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Text version
North Dakota Maintenance
Office Spare Station Service Padmount Transformer
12/6/2024
North Dakota Maintenance Office
1. General: Three phase, ONAN, 60Hz, 65°C Rise, padmount transformer, meets all applicable NEMA and ANSI standards.
1.1. Capacity: 300kVA
1.2. Primary Voltage: 13.2kV (Delta)
1.3. Primary Enclosure: Loop Fed, Dead Front with parking stands
1.4. Primary Bushings: (6) bushing wells with insulated plugs included
1.5. Primary BIL: 125kV
1.6. Secondary Voltage: 240/120V (Red Leg Delta)
1.7. Secondary BIL: 30kV
1.8. Insulating Fluid: Electrical Grade Mineral Oil (Non-PCB marked on nameplate)
1.9. DETC: Primary De-energized tap changer with ±2.5% and ±5% taps (5 positions total)
1.10. Accessories:
1.10.1. Liquid Temperature Gauge
1.10.2. Liquid Level Gauge
1.10.3. Drain Valve
1.10.4. Enclosure Grounding Pads
1.10.5. Provisions for padlock on enclosure door handles
1.10.6. Pressure Relief Device
1.11. Paint: ANSI 70 gray
2. Delivery:
Western Area Power Administration Attn: Brandon Foss
700 North Bismarck Expressway Bismarck, ND 58501
Shipper is to contact Bradley Seely at 701-221-4501, to verify the delivery site is ready for delivery, to refine the delivery destination directions, and to coordinate delivery at least seven days prior to delivery. Delivery shall be made between 8:00 a.m. and 4:00 p.m. Monday through Thursday, excluding Government holidays.
| North Dakota Maintenance Office |
| Spare Station Service Padmount Transformer |
| 12/6/2024 |
File details come from the government source that posted it. Updated .