Our voltage transformers with built in sensors are designed for pole tops and kiosks and are intended to be used for low power remote control- measurement applications in medium voltage networks with the range 3-27kV.  Voltage sensors are of resistive type for eliminating the saturation risk in situations of single phase earth fault in a network with isolated neutral.

Hughes Power System voltage transformers
  • 3-27/0.11-0.22kV, 300 VA, 50/60Hz transformer versions
  • Oil insulated
  • Made of stainless steel
  • High precision Y-Y connected resistive voltage dividers
  • No voltage saturation at single earth faults in insulated ground networks
  • Epoxy – silicone bushings

what is aSingle phase voltage transformer

The VT2 series of voltage transformers-sensors are designed for pole top use and intended to use for low power remote control- measurement applications in medium voltage networks from 3-27kV. It is a single phase transformer, connected between two phases and does not need system ground on the primary side.
Modern oil-insulated voltage transformers are suitable for power supply of various remote controlled switches, autoreclosers, motor actuators, remote terminals, radio equipment, etc.
Oil-insulated transformers are most suitable for AMS work, as the fault risk is very limited.
They are made of SIS 2333 stainless steel for best corrosion protection.
The transformer has a core of composite material and an outer shell of silicone rubber. Silicone rubber protects very effectively against UV light and ensures long durability for many years of operation.

Hughes Power System voltage transformers single phase


  • 3-27/0.11-0.22kV, 300 VA, 50/60Hz transformer versions
  • Oil insulated
  • Epoxy – silicone bushings
  • Mounting brackets for wood, composite and concrete poles
  • Mounting brackets for surge arrestors
  • Made of stainless steel 

technical data

  • Primary voltage: 11 or 22 kV (phase phase)
  • Secondary voltage: 220V
  • Power: 300 VA
  • Completions: Composite and silicone rubber
  • Dimensions: 500 x 400 x 220 mm (hxbxd)
  • Operating temperature range: -40 ... +55 ° C
  • Enclosure: IP65, stainless steel
  • Weight: 40 kg

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Auto reclosers
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  • Сontrol cabinets for vacuum breaker modules
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  • Motor operators for airbreak switches
  • Voltage transformers