Functions performed by the substation КТПВР:

• protection against short circuit currents and overload of the primary winding of the power transformer;
• thermal protection of the power transformer;
• zero protection of HV and LV circuits;
• protection against short circuit currents and overload of LV taps;
• protection against phase imbalance of the supply voltage or loss of one of the phases of the LV taps;
• current leakage protection and continuous monitoring of insulation resistance of at least 60 kOhm per phase for low-voltage taps (1140 V), with a total shutdown time of not more than 0.12 s with a symmetrical three-phase earth leakage, according to GOST 22929 – 78;
• preventive control and blocking, which does not allow voltage to be applied to the LV taps when the insulation resistance drops below 100 kΩ at a voltage of 1140 V;
• the possibility of checking the serviceability of protection devices against leakage currents without opening the doors of the substation;
• protection against short circuit, breakage or increase in the resistance of the grounding circuit of the outgoing connection more than 50 Ohm;
• possibility of remote control of low-voltage taps through the grounding circuit;
• the ability to remotely turn off the switchgear of the high-voltage cell that feeds the substation using a control cable (control core);
• the ability to connect gas protection (methane relay);
• connection of electrical consumers at 127 V (lighting and mining drill / vulcanizer);
• protection of 127 V taps against leakage currents and short circuits.