Switchgear SFT-1

Switchgear SFT-1 (with passive high current harmonic filter) ) is an electrical device designed for use in underground mining, with no explosion hazard present and on the ground, with no explosion hazard present. Switchgear SFT-1 (with passive high current harmonic filter) is designed for reduction and mitigation current harmonic in wide range loading of receiver (or group receivers), supplied through switchgear with six-peak frequency converter (f.e. type SF-1, SF-2, SF-3) to the mine 3-phase power grid with isolated star point of the transformer (IT system ) for 500V rated voltage.. Switchgear with frequency converter (f.e. type SF-1, SF-2, SF-3) is connected to the switchgear SFT-1 via a terminal by cable gland. Switchgear SFT-1 is equipped with a power protections against short-circuits, excessive growth temperature of filter, lowering earth resistance.