Skipper ETS manufacture a complete range of high-quality IEC Standard 11kV and 33kV Voltage Class pole and ground mounted distribution transformers. Our standard ratings start at 50kVA and go up to 3150kVA, they are designed to comply with the Nigerian Distribution Network Operators technical requirements.

power transformer

The transformer technology is derived from a technology transfer partnership from a 'world-leading’ transformer OEM with a significant presence in Africa, Europe and the Middle East. Our manufacturing principles and processes exceed internationally recognised standards to ensure that only highly reliable and resilient transformers are connected to critical distribution networks.

Transformer designs are proven with over 32 years’ experience of being installed and applied in harsh conditions and environments I.E. extreme high temperatures and/or tropical climates. This makes our product the product of choice for West African electrical utilities and oil & gas operators.

Whether the requirements is for breathing conservator or hermetically sealed type transformers we are able to support your specification and application needs.

Offering high operational performance properties in terms of voltage ratio, losses, impedance

Temperature rise and optimised transformer layout or footprint.


Ratings : 50kVA to 4000kVA

Primary Voltage: 36kV voltage class

Phases: single & three


Dielectric : mineral oil or ester fluid

Type : free breathing or sealed

Pole Mounted:
  • Cable Box

    Side mounted - LV

  • Outdoor Bushing

    Top cover – HV / LV

    Top cover end - HV

  • Connections

    Single primary - single HV bushing connect 1 to ground

    Dual primary - two HV bushings connect 2 of 3 system

Ground Mounted:
  • Cable Box

    Side mounted – HV / LV

  • Connections

    Single primary - single HV bushing connect 1 to ground

    Dual primary - 2 HV bushings connect 2 of a 3 system

Product Specification

Rating (kVA) 50 100 200 250 315 500 1000 1500 2000 2500 3150
Mounting Type P P P P/G P/G G G G G G G
HV (Volts) 11,000  21/2%,  5%
LV (Volts) Dyn 11, Dyn 5
Vector Group 50 Hz or 60 Hz
Frequency 50 Hz or 60 Hz
Temp. rise oil/winding 35 to600C/ 45 to 65oC
No Load Loss (W) 200 300 500 650 700 1100 1700 1900 2200 2800 3150
Load Loss (W) 1100 2000 2800 3350 3500 5500 7000 14000 21000 24000 31500
Impedance (%) 4 4.75 6 7

General Transformer Range

Distribution Liquid & CRT l Medium Power l Power l Earthing Rectifier l Motor Start l Phase Shift l Generator l Voltage Regulating l Auto l Multi Tap ESP l Reactors l Solar l Wind Turbine l Furnace l Dual Ratio