Voltage instrument special transformer VPT 100

Voltage transformers VPT 100 are single-phase transformers isolated with single pole. They are designed as the sources of high voltage with the ratio 0.22/100kV or 0.38/100 kV.The power of voltage transformers VPT 100 is 3 kVA, in the short time it can be up to 7 kVA. It is possible according to the request of customer to make the limitation of the secondary current by the means of resistor, if is the case the limitation of the current highlights by the means of choke placed in the bushing.

Voltage transformers VPT 100 are single-phase transformers isolated with single pole. They are designed as the sources of high voltage with the ratio 0.22/100kV or 0.38/100 kV.The power of voltage transformers VPT 100 is 3 kVA, in the short time it can be up to 7 kVA. It is possible according to the request of customer to make the limitation of the secondary current by the means of resistor, if is the case the limitation of the current highlights by the means of choke placed in the bushing.

Magnetic circuit of voltage transformers VPT 100 is made of oriented transformer strips in the shape of “C” of core.All active parts of transformer are compound-insulated with epoxy-mixture.The transformers are supplied with the undercarriage that allows movement oftransformer.The weight of transformer including undercarriage is 125 kg.

Transformer can be supply separately or in configuration with measuring devices on side vvn.

General configuration contains:

  • regulation auto-transformer
  • protection A15, producer ABB Energo a.s
  • transformer VPT 100, producer KPB Intra

Pic.1 The characteristics of the source

VPT 100

VPT 100

Pic.2 Block diagram

VPT 100

Nominal frequency:  50 Hz
Weight:  125 kg
Thermal insulation class:  E
Operation conditions: 

operating temperature from -5 to + 40 °C

corresponds to temperature class -5/40 according to IEC 61869-1

Standard:  ČSN EN 60044-2, IEC EN 60044-2, ČSN EN 61869-1, ČSN EN 61869-3, IEC EN 61869-1, IEC EN 61869-3, GOST 15 150