15/16.8/20/22.4/25/28 MVA substation transformer, 67 kV delta to 12.47Y/7.2 kV

Substation transformerRefurbishedListing #3180Location on request

Year built
1991
In service
Not stated
Equipment no.
STT-06-0011
Manufacturer
Kuhlman

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
15/16.8/20/22.4/25/28 MVA, OA/FA/FA/FA, 55/65 °C rise
Primary
67,000 V delta
Secondary
12,470Y/7,200 V
Full-load current
694 A at 15 MVA, 778 A at 16.8 MVA, 926 A at 20 MVA, 1,037 A at 22.4 MVA, 1,157 A at 25 MVA and 1,296 A at 28 MVA, at 12.47 kV calculated from its rating
Phase
3-phase, 60 Hz
Impedance
6.90%
Taps
70,600, 68,800, 67,000, 65,200 and 63,400 V
BIL
350 kV HV, 110 kV LV
Windings
Copper
Fluid
Oil, 4,313 gal
Weight
114,800 lb; 84,000 lb shipping without oil
Dimensions
128 × 165 in footprint; 15 ft shipping height with bushings
Accessories
Three HV 1200:5 multi-ratio CTs; non-removable radiators; HV pocket bushings

About this unit

Refurbished 1991 Kuhlman step-down unit offered by Tampa-based CTG Power Systems, which quotes 10 to 12 weeks for delivery. Core, tank and oil weights and shipping dimensions are listed; no unit location or price is given.

Listed October 18, 2026

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