Control Station is designed for remote control (switching on and off), protection of asynchronous electric motors with short-circuited rotor (from 1 to 10 pc) against overload currents and short-circuiting, and diverging connections in mine electric networks with transformer insulated by neutral.

• compact station with automatic switch and light transformer for control of cutter-loader, adzing machine and refrigerating unit;
• compact station for control of face conveyer with transformer (P=40 kVA, U= 1140/660 V);
• compact station for control of face and gate conveyers;
• compact station for control of filling raise complexes.

STATION CAN BE DELIVERED IN NORMAL AND EXPLOSIONPROOF TYPES

DISTINGUISHING FEATURE OF CONTROL STATIONS OF NORMAL TYPE IS ELECTRICAL CIRCUIT THAT PROVIDES:

• switching on and off power contactors according to set algorithm;
• switching on and off power contactors without supplying voltage to power circuit (testing);
• possibility of connecting remote control panels;
• intrinsically safe inputs for connection of external control circuits;
• intrinsically safe outputs for generation of signals on the state of power contactors.

ON TOP OF CONTROL FUNCTIONS THE STATION ELECTRIC CIRCUIT PROVIDES:

• protection of diverging power circuits against short-circuit currents;
• protection of diverging power circuits against current overload;
• protection of connected equipment against impermissible overheating;
• protection against breaks and short-circuiting ;
• protection against self-actuation when supply voltage increases over 150% of the rated value;
• protection against breaks, short-circuiting or rise of resistance over permissible level of the grounding circuit of diverging connections;
• interlock preventing actuation of taps during damage or degradation of insulation in tapping circuits against ground below permissible level;
• protection against current leaks in the internal power circuits 42 V and 220 V;;
• protection against current leaks in diverging connections and “5 meter long section” of supply line;
• zero protection;
• indication of supply network voltage;
• indication of protections actuation;
• indication of taps actuation;
• verification of protection operation.

ON TOP OF CONTROL FUNCTIONS IN DOWNSTREAM CIRCUITS 127V AFTER ILLUMINATION TRANSFORMER:

• protection against current leaks;
• interlocks preventing taps actuation upon damage or deterioration of downstream circuits insulation against ground below permissible level;
• protection against break out, short-circuiting or resistance rise over permissible level of grounding circuit of downstream connections;
• protection against short-circuit currents of downstream circuits;
• protection against overload of downstream circuits current.

OPERATING CONDITIONS:

• underground mine workings, salt mines including, aired by flow of fresh air due to general shaft depression
• ambient temperature, ⁰C – from –5 to 35;
• relative air humidity at ambient temperature (25+/-2) ⁰C, % - (98+/-2);
• atmospheric pressure , kPa – (99.75 +/- 13.3);
• air dust level, maximum, mg/m² – 1500;
• vibration, maximum, Hz – 25;
• acceleration at vibration, maximum, m/s² – 10
• absence of jerks and shocks;
• working position in space – vertical; deviation of working position by no more than 150 to each side is allowed;
• permissible fluctuations of supply network voltage – from 85 to 110% of rated value.