UNIMAG POWER Transformer

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Compact Substation

Compact Substation is used for feeding power form high voltage to low voltage in open cast mines, construction sites, metro cities etc. The substation is compact in size, suitable for frequent shifting and for use in indoor / outdoor locations. The substation is installed and mounted on skid frame or wheels or channels and is provided with lifting hooks

Technical specification:


Electrical characteristics

  • Rated voltage (kV) : 12v
  • Rated insulation level(kVrms/kVp) : 28/75
  • Rated frequency (Hz) : 50

Ratings

  • Oil filled transformer : 63 kVA to 2500 kVA
  • HV voltage : 11kv
  • LV voltage : 433V, 3 Phase
  • Frequency : 50Hz
  • Dimension -Upto 1000 kVA -1250 kVA to 2500 kVA
    2100 mm (W) x 2950mm (L) x 2100mm (H) 2300 mm (W) x 4200mm (L) x 2100mm (H)

Dry / Cast ReSin / VPI

  • Transformer : 63 kVA to 2500 kVA
  • HV voltage : 11 kV
  • LV voltage : 433V, 3 Phase
  • Frequency : 50Hz
  • Dimension - Upto 1000 kVA -1250 kVA to 2500 kVA
    2100 mm (W) x 2950mm (L) x 2100mm (H) 2200 mm (W) x 4200mm (L) x 2100mm (H)
  • RMU : 11 kV, 3 Phase, 50 Hz Swltch-630A, 12kV, 21kA, 3 phase Breaker-200A/630A, 12kV, 21kA, 3 phase
  • Transformer : 11kV/433Vr 3phase, 50Hz with off circuit tap switch +5% to -10% in steps of 2.5% Vector Group Dyn 11
  • LV breaker : 433V, 3 Phaser 50Hz
  • Incomer breaker : 400A to 2500A, 50Hz
  • Distribution MCCBs : 100A to 800A, 50kA

Salient Feature

  • Design conforms to IEC 62271-202 standards
  • The compartmentalized construction prevents accidental entry to energized areas
  • Meets IP53/IP23 degree of protection
  • Tailored configuration to customer needs
  • Designed to withstand electrical impulses, thermal and dynamic stresses
  • Low power loss and low noise transformer
  • Number of feeders for LV can be customer specific
  • Easy to install
  • Delivery ready for commissioning
  • Modern manufacturing techniques ensure cost effectiveness, reliability and long trouble free performance

Optional accessories:

  • HV metering
  • Vacuum circuit breaker with protection for HV system
  • Load break switch for HV system
  • APFC panel
  • LT Distribution Panel
  • Synchronisation Panel
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