2500/3125 kVA dual-voltage substation transformer, 21 kV wye or 12 kV delta to 480 V wye

Substation transformerCondition not statedListing #2081Location on request

Year built
Not stated
In service
Not stated
Equipment no.
201
Manufacturer
Cooper

Price and quote

Price on request

Price for the equipment. Your quote adds testing and delivery to your site.

  • Tested before it ships, and you see the report first
  • Delivered to your site, with rigging and freight quoted up front
  • Confirmed with the seller before we quote
Drawing for illustration. Photos and the nameplate are available on request.

Specifications

Rating
2,500/3,125 kVA
Primary
21,000 V wye or 12,000 V delta (dual voltage)
Secondary
480 V wye
Full-load current
3,007 A at 2500 kVA and 3,759 A at 3125 kVA, at 480 V calculated from its rating
Phase
3-phase, 60 Hz
Tap changer
De-energized (off-load)
Terminations
HV and LV bushings on the cover
Fluid
Mineral oil
Weight as listed
18,875, no unit given

About this unit

Dual-voltage station unit for 21 kV wye or 12 kV delta service with a 480 V wye secondary, offered by Transformer Network of Colman, South Dakota; the page spells the maker Coper. It lists mineral oil, cover bushings and a weight of 18,875 without units, but no year, impedance or condition.

Listed October 18, 2026

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