Substation transformer

ETAC manufactures Substation Transformer for industrial, utility, mining and construction applications. Each unit is built with reinforced steel tanks and copper or aluminum windings, each unit includes standard protection and monitoring features. These transformers are fully customizable with options such as stainless steel enclosure, on-load tap changer, and smart control system. All units are approved to use in Canada and US.

ETAC Substation Transformer with Protection and Monitoring Gauges
  • cULus (Listed for Canada and the U.S.)

  • Approved for use in Canada, as per CSA SPE-1000

cULus CSA

Substation Transformer Standard Specifications

Capacity Range: 300 KVA to 10 MVA

Primary Voltage: Δ or Y: 4.16 kV to 34.5 KV 

Secondary Voltage: Δ or Y: 4.16Y/2.4, 600Y/347, 480Y/277 

Phase: Three-Phase

Freq: 60 HZ

Winding Material: Copper or Aluminum

Temp. Rise: 65°C

Insulating Liquid: Mineral Oil or FR3 Oil

Taps: ±2 x 2.5%

Finish: ANSI 70 Grey, Munsell RBG 7.0/0.4

Built to:

Substation Transformer Standard Features

ETAC’s Substation Transformer are equipped with robust standard features, including reinforced carbon steel tank, mineral oil colling insulant, and copper or aluminum windings. They also come with full set of protection and monitoring gauges, offering long-term reliability and fast delivery across North America.

  • Reinforced Carbon Steel Tank & Radiators
  • Mineral Oil
  • Air Terminal Chamber or Throat
  • Copper or Aluminum Windings
  • ±2 x 2.5% De-Energized Tap Changer
  • Pressure Vacuum Gauge with Contacts
  • Liquid Temp Gauge with Contacts
  • Liquid Level Gauge with Contacts
  • Pressure Relief Valve
  • Drain and Sample Valve

For details on substation transformer design, including core construction, insulation system and winding configurations, refer to our article: Substation Transformer Design and Construction.

Customization options

  • Stainless Steel Tank & Radiators
  • Tamper-Proof Enclosure
  • FR3 UL classified and FM Global approved
  • On-Load Tap Changer
  • Qualitrol Gauges
  • Control Cabinet for Fans
  • Winding Temperature Indicator
  • Monitor System
  • Electrostatic Shielding
  • K Factor Rated

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