DUAL VOLTAGE 4.16/13.8KV 1000KVA MINE SUBSTATION

Section 1:

15kV primary disconnect switch, including:

• 15kV 600A Load break switch c/w DIN fuse (45mm x 292mm)
• 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)
• 3x high voltage LED indicators, installed between switch and fuses (Z4)
• 3x 25mm grounding balls on phases (load side of 5kV switch) and 1x on ground bar outside the enclosure. Allows uses of temporary grounding cable sets, during work on equipment (Z5)
• Top entry 15kV cable connection compartment, behind interrupter
• 3x fuses for second voltage inside switch compartment

Section 2:

13800-4160V / 600-347V « Delta-Wye » 2 voltage transformers:

• Dry Type Power Transformer:
  • MINE DUTY TRANSFORMER
  • NRCAN 2019 COMPLIANT TRANSFORMER
  • 1000kVA
  • Adjustment taps: 4 x 2.5% (2FCAN+2FCBN)
  • Class H insulation 220°C
  • 150°C Rise
  • Copper windings
  • Primary: 13.8/4.16kV (Delta) BIL: 95/30kV
  • Secondary: 600/347V (Wye) BIL: 10kV
  • Taps: 4 x 2.5% (2FCAN + 2FCBN)
  • IZ: 7% (est.)
• Splash proof 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
• 15kV 600A 125kV BIL “through wall type” bushings

Section 3:

600V distribution:

• 1x 1200A 3P main breaker + AS (Operation via Flexshaft)
• 1x 1200A 3P c/w adjustable trip unit + ST + AS feeder breaker (Operation via Flexshaft)
• 1x 200A 3P c/w ST + AS feeder breaker (Operation via Flexshaft)
• (ST= Shunt-Trip)
• (AS= 3-wire auxiliary switch)
• Indicating lights for all breakers
• 2x 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 the control section)
• 1x microprocessor based programmable controler
• RS-485 (Modbus ASCII/RTU) Communication
• Alarm #1 – 100°C – Temperature alarm (dry contact)
• Alarm #2 – 170°C – Temperature alarm (dry contact)
• Alarm #3 - 200°C – High temperature alarm (dry contact)
• 1x type "J" thermocouple, installed in the transformer

Enclosure specifications:

• Built as per Adria mine duty standard
• Built for vertical handling and lifting
• NEMA 2
• Drip proof design, suitable for underground mining
• Sand blast surface preparation and epoxy painted
• Dimensions and approximate weight:
  • 146’’ W x 60’’ D x 72’’ H
  • 12 000 lbs