Transformer station ST-T2/N1V

The transformer station type ST-T2/N1V 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. The transformer station type ST-T2/N1V is dedicated to for connecting and switching receivers (including frequency converters) in the mine 3-phase power grid with an insulated transformer star point (IT system) for rated grid voltage 500V AC. The transformer station ST-T2/N1V is equipped with a power protections against short-circuits, overloads and lowered insulation resistance with installed transformer: 630 kVA or 800 kVA and rated upper voltage 6 kV or 10 kV or (10-6) kV (switchable transformer) and lower rated voltage 525V AC. Electrical equipment of a transformer station at the upper rated voltage of 10kV and (10-6) kV is matched to 10 kV rated voltage.