Voltage transformer of external installation 36 kV

The voltage transformer type VTH 52-N is a single-phase cast structure in the form of an inductive type converter, with one isolated output of the primary winding, the other end of the primary winding is grounded during operation.

The primary winding, core and secondary windings of the voltage transformers are vacuum-sealed with cycloaliphatic epoxy resin, which provides protection against corrosion, moisture penetration, high insulating ability, resistant to environmental influences and climatic conditions such as ultraviolet radiation, rain, ice, sea air .

The secondary windings are multi-turn, made of copper wire, located on laminated magnetic cores made of cold-rolled electrical steel. Transformers do not require additional service and maintenance during operation.

The primary winding of the voltage transformer is connected according to the phase-to-earth circuit. Measuring instruments and protective relays are connected in parallel with the outputs of the secondary winding. Measuring voltage transformers can be made both as grounded transformers for phase-to-ground voltage measurement, and as non-grounded transformers for phase-to-phase voltage measurement.

Support voltage transformers type VTH 52-N are designed for outdoor installation in networks with voltage up to 36 kV (40.5 kV). Current transformers of the VTH 52-N series are used for galvanic isolation of high (36kV and above) from low (usually 100V) voltage circuits of the secondary windings. Voltage transformers allow you to isolate low-voltage protection logic circuits and measuring circuits from high voltage, which allows you to use equipment for low-voltage networks, which is cheaper.

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