Hybrid MLC/Refuge Chamber
High voltage compartment configured as follows:
- 300 kVA, Core and Coil, copper wound, dry type transformer
- Load Break Switch with internally LED lit viewing window
- Lightning surge arrestors and fuses sized per customer voltage
- 15A Neutral Ground Resistor
- Door for HV switch compartment is gasketed to reduce contamination
- E-stop tied into pilot wiring
- 1ea HV glands for incoming cables
- Bulkhead separating HV switch compartment from the Transformer compartment
Secondary compartment configured as follows:
- 2ea 225A breakers, UV trip, DEA GM710A ground monitor, 225A outgoing connector, w/ DEA Rear Side Actuators (Patented)
- 1ea 100A breaker, UV trip, DEA GM710A ground monitor, 125A outgoing connector w/ DEA Rear Side Actuator (Patented)
- Utility transformer for control power and local 120V GFCI protected receptacles
- Power meter, reading voltage and current per phase
4 Person Refuge Chamber configured as follows:
- 36hrs UPS Battery system with charger and inverter, powered directly from MLC
- Air supply system:
- Triple stage air filtration on incoming mine air plumbing
- Interior chamber with storage locations for 4ea tanks
- Check valves to regulate internal air pressure for interior chamber
- Internal pressure measured by plumbed manometer
- CO2 absorbent curtains sufficient for 36hr occupancy by 4 persons
- Single phase AC powered air conditioning
- Sealed chamber with fire and blast resistant portal window and bench seating for 4 persons
- 120V power from MLC to service the Refuge Chamber when battery power not required
- Power source indicator light (Green/Red)