66/88/110 MVA substation transformers, 138 kV wye to 34.5 kV wye, with load tap changer

Substation transformerNew surplusListing #2879Location on request

Year built
Not stated
In service
Not stated
Equipment no.
13834-RC
Manufacturer
Kolektor Etra

Price and quote

Price on request5 available

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
66/88/110 MVA, ONAN/ONAF1/ONAF2, 65 °C rise
Primary
138,000 V wye
Secondary
34,500 V wye
Full-load current
1,104 A at 66 MVA, 1,473 A at 88 MVA and 1,841 A at 110 MVA, at 34.5 kV calculated from its rating
Phase
3-phase, 60 Hz
Vector group
YNyn0+d11
Tap changer
On-load, ±16 × 0.625%
BIL
650 kV HV, 200 kV LV
Windings
Copper
Cooling
ONAN/ONAF1/ONAF2
Accessories
13.8 kV tertiary
Weight
200,620 lb total

About this unit

Five new, unused Kolektor Etra units built in Ljubljana, Slovenia for a GSU purchase order, with on-load regulation and a 13.8 kV tertiary, offered by a transformer dealer that serves projects across North America. The plate leaves the build date blank. Location, price and a technical package come with a quote, and listings are subject to prior sale.

Listed October 18, 2026

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