Product Catalog




Section 1

15kV primary disconnect switch:

  • 15kV 600A Load break switch
    • ABB NAL (NAL24-6K235R)
    • 60kV BIL
    • Momentary and Fault Closing rating current: 40kA asym.
    • Padlock provision
  • Kirk-key interlock between 15kV switch door and switch handle, to prevent access when energized
  • 1x vacuum circuit breaker electrically operated (TAVRIDA, ISM15_LD_1(55))
    • 15kV, 800A
    • Undervoltage protection (breaker open in case of power loss)
    • Breaker opens in case of NGR fault or resistor fault
  • 1x 15kV control transformer with primary and secondary protections
  • Recessed operating handle, to prevent breaks during handling
  • Removable protecting mesh barrier, for safe fuse replacement
  • 3x high voltage indicator LEDs, at the switch incoming and outgoing
  • 4x grounding balls
  • Visualization window to see 15kV switch state (safety glass)

Section 2:

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

  • Dry Type Power Transformer:
    • 1500kVA
    • Class H insulation 220°C
    • 115°C Rise
    • Copper windings
    • Primary: 13.8kV (Delta) BIL: 110kV
    • Secondary: 600/347V (Wye) BIL: 30kV
    • Taps: 4x 2.5% (2FCAN + 2FCBN)
    • IZ: 5% (est.)
    • 65 dBA
  • Splash proof ventilation louver with metal mesh protection behind
  • Station class arresters
  • Qualitrol temperature monitor
  • 30kVA 120/208V external transformer
  • Neutral grounding resistor (NGR) 69 Ohm, 5A cont.
  • ER600V Startco sensing resistor with CT
  • CT’s and PT’s installed at the transformer secondary

600V distribution panel section (not segregated):

  • Distribution panel including:
  • 1x 2000A busbar entry with the following breakers
    • § 3x 600A 3P feeder breakers c/w ST, 100% rated and adjustable trip unit
    • § 1x 400A 3P feeder breakers c/w ST, 100% rated and adjustable trip unit
    • 1x 40A 3P for 30kVA transformer protection, 80% rated and fixed trip unit
    • 4x SE-105 ground fault protections c/w C.T. 200/5 on shunt-trip equipped feeder breakers

Control compartment:

  • 1x SE-330 NGR monitoring
  • 1x SEL751A with active arc flash detection
    • Arc flash protection relay with high speed output
    • Open 15kV vacuum circuit breaker in case of arc flash or overcurrent
    • 3x primary CTs (C200)
    • Optical sensor in each power compartment
  • 120/208V 30kVA auxiliary distribution (dry type)
    • 24 ccts recessed distribution panel
    • 1x 100A main breaker (125A is too high)
    • 6x 15A – 1P
    • 4x 20A – 1P
    • 1x 30A – 2P
    • 2x 20A GFI duplex receptacle with weatherproof cover


  • Built as per Adria mine duty standard
  • Built for vertical handling and lifting
  • NEMA 2 transformer and switch compartment
  • NEMA 2 control compartment
  • Drip proof design suitable for underground mining
  • Sand blast surface preparation and epoxy painted
  • Standard and easy to replace replacement parts (doors, accessories, etc.)
  • Heaters and thermostat in control and txo compartments
  • Lights in control and switch breaker for inspection
  • Two ground points connections on the skid
  • Dimensions and approximate weight:
    • 110’’ H x 90’’ P x 190’’ L (19 000 lbs) to be confirmed at the design stage

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