Attachment 2 - Salient Characteristics.pdf
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- Attached to
- High Voltage Transformers
- Solicitation number
- FA460824QC115
About this file
This document is an Attachment containing the Salient Characteristics for a 75 KVA Pad Mount Transformer required under Solicitation FA460824QC115 for High Voltage Transformers. The key details are:
The transformer must be three-phase, pad-mounted, liquid-filled, with a 12470V delta primary and 208Y/120V wye-n secondary. It shall have a weatherproof and UV-resistant epoxy coating, a 5-position tap changer, primary dead-front termination with 200A load break elbows, and secondary live-front NEMA spade terminals. The insulation fluid must be a biodegradable natural vegetable oil ester. The solicitation is a small business set-aside with a NAICS code of 335311 and 800-employee size standard. Quotes are due by 2:00 PM CDT on August 12, 2024 to the Department of the Air Force Global Strike Command.
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FA460824QC115
Attachment 2
Salient Characteristics
75 KVA Pad Mount Transformer
The specified unit is required to have several key characteristics to meet the designated criteria. The specified characteristics below collectively contribute to the efficiency and sustainability of the housing electrical system while allowing ease of maintenance and repairability. Itemized list is as follows:
Three Phase Pad mount 75 KVA:
• 12470V Delta Primary
• 208Y/120 Wye-n Secondary
• Finish Color: Barksdale Brown, DTM, Federal Standard # is FS 20117
• Paint Type: Weatherproof and UV Resistant Epoxy Coating and Undercoating
• Liquid Filled Pad Mounted
• Loop Feed
• Step-Down Operation
• Three Phase
• Primary BIL: 95 KV
• Secondary Phasor: Wye-N
• Secondary BIL: 30 KV
• Frequency: 60 Hz
• 5-position Tap Changer
• Tap Changer Switch Rating: 200-Amp, 15 kV
• Primary: Dead Front
• Termination: 200A Load Break Elbows w/ Inserts
• Primary Neutral Connection: N/A
• Primary Surge Arrestors: (3) High Voltage Elbow Surge Arrestors
• Primary Surge Arrestor Voltage Rating: 18 kV Class Elbow Arrestor
• Primary Over Current Protection Method: Fused, Oil-Immersed
• External Drip Shield
• Secondary: Live Front
• Secondary Connections: NEMA Spade Terminals, 4-Hole Spade, Externally Clamped, (4) Double Lug connections
• Secondary Over Current Protection (OCP): N/A
• Secondary Neutral Connection: Secondary X2 Neutral Grounded to Tank
• Secondary Grounding Provisions: (1) NEMA Ground Bar attached to tank via (2) Welded Ground
Bungs in LV Cabinet
• Load Break Switch: 4-Position Load Break Switch
• Load Break Switch Rating: 200-Amp, 15 kV
• Insulation Fluid: Biodegradable Natural Vegetable Oil Ester Insulating Fluid - Non-PCB Fluid
• Sound Level: <=51 dBA
300 KVA Pad Mount Transformer
The specified unit is required to have several key characteristics to meet the designated criteria. The specified characteristics below collectively contribute to the efficiency and sustainability of the housing electrical
Three Phase Pad mount 300 KVA:
• 208Y/120 Wye-n Secondary
• Finish Color: Barksdale Brown, DTM, Federal Standard # is FS 20117
• Paint Type: Weatherproof and UV Resistant Epoxy Coating and Undercoating
• Liquid Filled Pad Mounted
• Loop Feed
• Step-Down Operation
• Three Phase
• Primary BIL: 95 KV
• Secondary Phasor: Wye-N
• Secondary BIL: 30 KV
• Frequency: 60 Hz
• 5-position Tap Changer
• Tap Changer Switch Rating: 200-Amp, 15 kV
• Primary: Dead Front
• Termination: 200A Load Break Elbows w/ Inserts
• Primary Neutral Connection: N/A
• Primary Surge Arrestors: (3) High Voltage Elbow Surge Arrestors
• Primary Surge Arrestor Voltage Rating: 18 kV Class Elbow Arrestor
• Primary Over Current Protection Method: Fused, Oil-Immersed
• External Drip Shield
• Secondary: Live Front
• Secondary Connections: NEMA Spade Terminals, 4-Hole Spade, Externally Clamped, (4) Double Lug connections
• Secondary Over Current Protection (OCP): N/A
• Secondary Neutral Connection: Secondary X2 Neutral Grounded to Tank
• Secondary Grounding Provisions: (1) NEMA Ground Bar attached to tank via (2) Welded Ground
Bungs in LV Cabinet
• Load Break Switch: 4-Position Load Break Switch
• Load Break Switch Rating: 200-Amp, 15 kV
• Sound Level: <=51 dBA
500 kVA 3 Phase Pad Mount Transformer
The specified unit is required to have several key characteristics to meet the designated criteria. The specified characteristics below collectively contribute to the efficiency and sustainability of the housing electrical
Three Phase Pad mount 500 KVA:
• 208Y/120 Wye-N Secondary
• Finish Color: Barksdale Brown, DTM, Federal Standard # is FS 20117
• Paint Type: Weatherproof and UV Resistant Epoxy Coating and Undercoating
• Loop Feed
• Step-Down Operation
• Primary Voltage: 12470V
• Primary Phasor: Delta
• Primary BIL: 95 KV
• Secondary Voltage: 208Y/120
• Secondary Phasor: Wye-N
• Secondary BIL: 30 KV
• Frequency: 60 Hz
• Tap Changer: 5-position Tap Changer
• Tap Changer Switch Rating: 300-Amp, 15 kV
• Primary Connection Type: Dead Front
• Primary Termination: Externally Clamped Integral Bushings w/ Removable Studs, 600A Dead Break
Elbows
• Primary Neutral Connection: N/A
• Primary Surge Arrestors: (3) High Voltage Elbow Surge Arrestors
• Primary Over Current Protection Method: Fused, Oil-Immersed
• External Drip Shield
• Secondary Connection Type: Live Front
• Secondary Connections: NEMA Spade Terminals, 6-Hole Spade, Externally Clamped, Accepts up to
(6) Double Lug connections with (3) cables per side of Spade connector
• Secondary Over Current Protection (OCP): N/A
• Secondary Neutral Connection: Secondary X2 Neutral Grounded to Tank
• Secondary Grounding Provisions: (1) NEMA Ground Bar attached to tank via (2) Welded Ground
Bungs in LV Cabinet
• Load Break Switch: 4-Position Load Break Switch
• Load Break Switch Rating: 300-Amp, 15 kV
• Sound Level: <= 56 dBA
750 KVA Pad Mount Transformer
The specified unit is required to have several key characteristics to meet the designated criteria. The specified characteristics below collectively contribute to the efficiency and sustainability of the housing electrical
Three Phase Pad mount 750 KVA:
• 480Y/277 Wye-N
• Finish Color: Barksdale Brown, DTM, Federal Standard # is FS 20117
• Paint Type: Weatherproof and UV Resistant Epoxy Coating and Undercoating
• Transformer Feed Type: Loop Feed
• Operation: Step-Down Operation
• Phase: Three Phase
• Primary Voltage: 12470V
• Primary Voltage Switch: N/A
• Primary Phasor: Delta
• Primary BIL: 95 KV
• Secondary Voltage: 480Y/277
• Secondary Phasor: Wye-N
• Secondary BIL: 30 KV
• Frequency: 60 Hz
• Tap Changer: 5-position Tap Changer
• Tap Changer Switch Rating: 300-Amp, 15 kV
• Primary Connection Type: Dead Front
• Primary Termination: Externally Clamped Integral Bushings w/ Removable Studs, 600A Dead Break
Elbows
• Primary Neutral Connection: N/A
• Primary Surge Arrestors: (3) High Voltage Elbow Surge Arrestors
• Primary Over Current Protection (OCP): Bayonet Expulsion Fuse in series w/ Partial-Range Current-
Limiting Fuse
• Primary Over Current Protection Method: Fused, Oil-Immersed
• External Drip Shield
• Secondary Connection Type: Live Front
• Secondary Connections: NEMA Spade Terminals, 6-Hole Spade, Externally Clamped, Accepts up to
(6) Double Lug connections with (3) cables per side of Spade connector
• Secondary Over Current Protection (OCP): N/A
• Secondary Neutral Connection: Secondary X2 Neutral Grounded to Tank
• Load Break Switch: 4-Position Load Break Switch
• Load Break Switch Rating: 300-Amp, 15 kV
| 500 kVA 3 Phase Pad Mount Transformer |
| 750 KVA Pad Mount Transformer |
File details come from the government source that posted it. Updated .