// High-voltage substation

HV Substation Transformers

Large power transformers for utility interconnects, generation step-up, and hyperscale campus intake. Engineered to your one-line and the utility's interconnect requirements, with factory witness testing.

global manufacturing
Engineered to the interconnect
30-38 Weeks
18 month warranty
HV Substation Transformers
Overview

The long-lead item, without the long lead.

HV transformers are the critical path on every substation. Bet Power quotes against confirmed factory slots and gives you a ship date you can build a schedule around.

Our engineering team reviews the utility interconnect spec, impedance, BIL, and load calculation before the quote, so the number you get is the number you order at.

250 MVAMaximum rating
230 kVMaximum primary class
30–38 weeksTypical lead time
Key specifications
  • Rating10 – 250 MVA
  • Primary69 / 115 / 138 / 230 kV class
  • Secondary4.16 – 34.5 kV
  • TypeLiquid-filled
  • CoolingONAN / ONAF / ONAF (65 °C rise)
  • StandardsIEEE C57.12.00, C57.12.10, C57.12.90, C57.98
  • Lead timeBuilt to order: 30 – 38 weeks
Specifications

What ships standard. What you can add.

Every unit is built from your spec. The lists below are the baseline and the most common options; anything else, send the drawing.

Standard specifications

Included on every hv substation transformers order.

  • DETC (± 2.5%, 5 positions)
  • Copper windings
  • Conservator or sealed-tank construction
  • HV & LV bushings per IEEE C57.19
  • Oil temperature indicators
  • Buchholz / sudden pressure relay
  • Pressure relief device
  • Oil level gauge with alarm contacts
  • Control cabinet with cooling controls
  • Cable-box terminations
  • Full factory testing per IEEE C57.12.90
  • Impulse testing per IEEE C57.98

Optional specifications

Quoted line by line, no packages.

  • Tertiary winding
  • On-line DGA monitoring
  • On Load Tap Changer
  • Bushing current transformers
  • Seismic qualification
  • Sound-level reduction package
  • Spare bushings & gaskets
  • Field assembly & oil processing
  • Extended warranty
From spec to energization

Five steps. Five teams.

A dedicated team owns each stage, from the first quote through the life of the unit.

01Sales

Request or build your quote

Send a spec or use Build a Quote. Pricing back in less than 30 minutes.

02Engineering

Start drawings

Our engineering team turns the quote into approval drawings and submittals.

03Project Management

Weekly build updates

Your project manager reports manufacturing progress every week until it ships.

04Logistics

Coordinate delivery

In-house logistics desk, staffed 24/7, schedules boats, trucks, and delivery timelines.

05Post-Sales

Commission and support

Post-sales team on call through installation, commissioning, and the life of the unit.

Send us a spec. Get a number back today.

HV Substation Transformers budgetarily quoted in under 30 minutes. Built for speed, priced for reality.