SU-RN standard mine control station

Station circuitry provides:

• Power contactors engagement/disengagement by a preset algorithm

• Power contactors engagement/disengagement with de-energized power circuit (testing)

• Compatibility with remote controls

• Intrinsically safe inputs for external control circuits

• Intrinsically safe outputs for power contactor status signals

• Short-circuit current protection of power branches

• Overcurrent protection of power branches

• Overheating protection of downstream equipment

• Remote control circuit fault or short-circuit protection

• Prevention of self-engagement at 150% of rated voltage

• Protection against branch ground circuit failure or resistance buildup over the allowable value

• Branch interlock in case of external line-to-ground insulation fault or drop below the allowable level

• Current leakage protection in internal 220V power lines

• No-voltage protection

• Mains power indication

• Tripping event indication

• Branch line engagement indication

• Protection testing

Main station types according to downstream equipment:

Compact station with an automatic circuit breaker and a lighting transformer to control a shearer, a face machine, and a cooling plant

Compact station with an automatic circuit breaker to control a shearer and a cooling plant

Compact station with a transformer (P=40kVA, U=1140/660V) to control face conveyors and gate conveyors

Compact station to control face conveyors and gate conveyors

Compact station to control stowage complexes

Environment conditions:

• Climatic version: U5 (temperate)

• Ambient temperature: minus 5°C to +35°C

• Relative humidity: (98±2)% at (25±2)°C

• Atmospheric pressure: (99.75±13.3) kPa

• Dust concentration in air: max. 1200 mg/m³

• Vibration: max. 25 Hz

• Vibration acceleration: max. 10 m/s²

• Mechanical impact exposure group: M6

• Severe shock or impact: not allowed

• Working position: vertical, with deflection by max. 15° in any direction

• Allowable power mains voltage fluctuations: 85% to 110% of rated value

Main performance specifications

Statement of conformity to standard mining version by Belgorkhimprom No.569.З.2023 BY valid till 09.02.2026