SU-RV TP explosion-proof mine control station with transformer substation

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
Performance diagnostics for all station components
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
No-voltage protection
Mains power indication

Protection testing

Indication on the integrated LCD of:

tripping events,

branch line engagement/disengagement,

status of each function

Upstream data transmission (‘to the surface’)

Recording of all events and settings

Environment conditions

Underground excavations at mines, shafts and their surface buildings with the ambient of hazardous gas and/or combustible dust

Category I explosive mixture (methane at underground works) ambient or corrosive salty dust ambient

UKhL (temperate and cold) climatic version, location category 5

Ambient temperature: minus 10°C to +40°C

Relative humidity: (98±2)% at (35±2)°C

Installation site vibration: max. 25Hz, acceleration at max. 1g

Working position: levelly on a skid, inclination max. 15° in any direction

Allowable power mains voltage fluctuations: 80% to 115% of rated value

Main performance specifications

Property	Value
Rated primary feed voltage, V	6000/10000
Rated secondary feed voltage, V	690/1140
AC mains frequency, Hz	50
Rated power, kVA	1250
Automatic circuit breaker rating, A	630
Number of downstream electric motors	Max. 25
Phase number and voltage at the lighting transformer secondary winding, ph × V (if any)	3×127
Number of branch lines powered by the lighting transformer secondary winding, including: 3-phase load at 1.6 kW 2-phase lighting load at max. 1.3 kW per branch 2-phase communication and alarm equipment load at max. 1 kW per branch	5 1 3 1
Note: Total power of connected consumers – max. 5 kVA
Branch line insulation control unit adjustment range, kΩ	10...130
Branch line current leakage control unit adjustment range, kΩ	10...130
Ex rating	РВ Ex db [iа Ма] I Мb Х
Enclosure protection rating	IP54
Remote control circuit intrinsic safety rating	ia
Duty mode: continuous short-time intermittent	S1 S2 S3
Weight, kg, max.	13000
Dimensions, mm, max.: length width (depth) height	7220 1070 1450
IEC protection class	I

Back to the list

SU-RV explosion-proof mine control station

Scope of application and purpose

SU-RV explosion-proof mine control station (the Station) is intended for remote control (start/stop), overcurrent and short-circuit protection of asynchronous electric motors of squirrel-cage type (max. 25 units) and branch connections of mine electric networks with insulated transformer neutral lines.

SU-RV PCh explosion-proof mine control station with frequency converter

Scope of application and purpose:

The control station with a frequency converter (the Station) is intended to:
Adjust feeding frequency and voltage
Control start/stop sequences
Adjust speed
Provide protections and interlocks for 3-phase AC driving motors, subject to frequent acceleration, deceleration, or inversion of rotation direction, in particular, like:
belt or drag link conveyor drives,
pump drives,
fan drives,
electric vehicle drives, etc.

The stations are designed to work at 660V to 1140V, including at underground mines and shafts with gas and/or combustible dust hazard. A station can be either non-Ex (standard) or Ex version.

SU-RN standard mine control station

Scope of application and purpose:

SU-RN control station (the Station) is intended for remote control (start/stop), overcurrent and short-circuit protection of asynchronous electric motors of squirrel-cage type (max. 20 units) and branch connections of mine electric networks with insulated transformer neutral lines. The station may be used at underground excavations at mines, including salt mines, with fresh air inflow ventilation by general mine depression where standard mining electrical equipment of insulation class 2 may be used.