SU-RV TP explosion-proof mine control station with transformer substation
Station circuitry provides:
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Power contactors engagement/disengagement by a preset algorithm
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Power contactors engagement/disengagement with de-energized power circuit (testing)
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Compatibility with remote controls
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Intrinsically safe inputs for external control circuits
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Intrinsically safe outputs for power contactor status signals
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Performance diagnostics for all station components
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Short-circuit current protection of power branches
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Overcurrent protection of power branches
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Overheating protection of downstream equipment
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Remote control circuit fault or short-circuit protection
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Prevention of self-engagement at 150% of rated voltage
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Protection against branch ground circuit failure or resistance buildup over the allowable value
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Branch interlock in case of external line-to-ground insulation fault or drop below the allowable level
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No-voltage protection
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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 |