Transformer station ST-T2/N1M1

The transformer station type ST-T2/N1M1 is a device designed for use in underground mining in excavations with no explosion hazard or in conditions with no methane explosion hazard and designated as class A coal dust explosion hazard. Transformer station type ST-T2/N1M1 is designed for connecting and switching on receivers (including frequency converters) in the 3-phase mine grid with insulated star point on the transformer (system IT) of rated grid voltage of 1000 and 500VAC. Transformer station type ST-T2/N1M1 is equipped with a power protections against short-circuits, overloads and lowered insulation resistance and with installed three-core transformer: 800kVA, 1000kVA, 1250kVA and rated upper voltage of (10-6)kV, lower rated voltage 1050V AC and lower rated voltage 525V AC. Transformer has upper rated voltage (10-6)kV and it is adjusted to supply 10kV or 6kV voltage. Electrical equipment of a transformer station at the upper rated voltage is matched to 10 kV rated voltage.