Medium-voltage instrument transformers
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 0.23/100kV. The power of voltage transformers VPT 100 is 3 kVA, in the short time it can be up to 7 kVA.
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Description
Voltage transformers VPT 100 are single-phase transformers isolated with single pole. They are designed as the sources of high voltage with the ratio 0.23/100kV. The power of voltage transformers VPT 100 is 3 kVA, in the short time it can be up to 7 kVA.
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:
Pic.1 The characteristics of the source
- regulation auto-transformer
- protection A15, producer ABB Energo a.s
- transformer VPT 100, producer KPB Intra
Parameters
- Nominal primary voltage: 230 V
- Nominal secondary voltage: 100 kV
- Transformer power: 3 kVA (short term up to 7 kVA)
- Nominal frequency: 50 Hz
- Weight: 125 kg
- Thermal insulation class: E
- Operation conditions: -5/+40 according to IEC 61869-1
Attached files
Drawing
Pic.1 Characteristics of the source
Pic.2 Block diagram
