Mine 4160V Portable Substation

These portable substations are designed to incorporate numerous arc flash and electrical safety features including:

• Rugged steel enclosure for mining applications
• Lifting and hoisting lugs with 10x safety factor
• 4160 to 600 V, 3 phase, 750 KVA copper wound dry type transformer with structural steel bracing for mining applications (cleaned, tested and reused)
• 3 x 5 KV mining connectors for 5 KV input, feed through and 5 KV miner power.
• 5 KV vacuum contactor and controls for safe operation of 5 KV miner output
• Steel wireway for safe separation of main 600 V insulated bus
• Separate 600V, 800 Amp main breaker compartment for isolation and safe access to 600 V feeder panel
• 6 X 600 V feeder circuits controlled by vacuum contactors and pushbutton controls to control 600V outlets from a safe distance.
  • 3 x 225 Amp mining receptacles
  • 3 x 125 Amp mining receptacles
• Separate enclosure for isolation and safe access to 600 V vacuum contactors.
• Separate enclosure for isolation and safe access to 600 V feeder breakers with additional internal dual hinged doors to cover 600 V terminals and wiring
• Recessed location for breaker operator handles, pushbutton controls and voltage indication.
• Remote operator handles for safe operation of breakers from outside the enclosure.
• Ground fault and pilot wire protection relays on every 600 V feeder.
• Neutral ground resistor with resistor failure detection and ground fault detection on main 600 V.
• LED indicators for phase voltage indication located at 2 locations, 600 V receptacles and control panel.
• LED indicators for phase voltage indication on 5 KV bus.
• Digital metering of V, A, W, etc on 5 KV miner output
• Digital metering of V, A, W, etc on 600 V main bus.
• Kirk Key interlocks between doors and disconnect handles on 5 KV switches and 600V main breaker.