1000KVA – 15KV MINE SUB

Section 1:

15kV primary disconnect switch:

• 15kV 600A Load break switch c/w DIN fuses (45mm x 292mm):
• 1x 13800/120V control voltage transformer with fuses
• Kirk-key interlock, between 15kV switch door and switch handle, to prevent access when energized
• Recessed operating handle, to prevent breaks during handling
• Removable protecting mesh barrier for safe fuse replacement
• Visualization window to see 15kV switch state (safety glass)
• Top entry 15kV cable connection compartment behind interrupter

Section 2:

13800 / 600-347V « Delta-Wye » transformer:

• Dry Type Power Transformer:
  • MINE DUTY TRANSFORMER
  • 1000kVA
  • Class H insulation 220°C
  • Copper windings
  • 150°C Rise
  • Primary: 13.8kV (Delta) BIL: 95kV
  • Secondary: 600/347V (Wye) BIL: 10kV
  • Taps: 4x 2.5% (2FCAN + 2FCBN)
  • IZ: 5% (est.)
• Splashproof ventilation louver with metal mesh protection behind
• Neutral grounding resistor (NGR) 69 Ohm, 5A cont.
• ER600V Startco sensing resistor with CT
• CT’s and PT’s installed at the transformer secondary

Section 3:

600V Distribution panel:

• 6x 400A 3P c/w ST feeder breakers
• 2x 225A 3P c/w ST feeder breakers
• ST= Shunt-Trip
• Padlock hasp on all 600V breakers
• 8x SE-105 ground fault protections c/w 200/5 C.T. on shunt-trip equipped feeder breakers
• SE-330 NGR monitoring
• 1x digital power meter with CT and PT for metering (installed in control section):
  • Realtime metering: V (L-L), V (L-N), A, PF, HZ:
    • 3 phases current are always visible simultaneously without user action required
  • Metering (average): A (demand)
  • Metering (max): V (L-L), V (L-N), A
  • Metering (min): V (L-L), V (L-N), A
  • RS-485 (Modbus RTU) communication
• 120/240V 5kVA auxiliary distribution (dry type) 8x 15A cct recessed including 1x GFCI 120V 20A outlet with raintight cover
• 1x “15kV contactor open” green LED indicator light
• 1x “15kV contactor close” red LED indicator light
• 1x 15kV “contactor open” pushbutton
• 1x 15kV “contactor close” pushbutton

Enclosure:

• Built as per Adria mine duty standard
• Built for vertical handling and lifting
• NEMA 2 cabinet
• Drip proof design, suitable for underground mining
• Sand blast surface preparation and epoxy painted.
• Standard and easy to change replacement parts (doors, accessories, etc.)
• Dimensions: 164’’W x 60’’D x 76’’H (Approximate weight: 11 000 lbs)