Pole Mounted Type Transformers

last update: Jan. 14 2023

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Protected transformers (CSP Type)are available with a variety of protection options including a  secondary breaker with weak link for secondary fault and overload protection, a primary weak link fuse, current-limiting fusing for high interrupting ratings and limiting fault currents, and internal or external lightning arresters.

Standard Ratings / Single Phase

• • 5, 10, 15, 25, 37.5, 50, 75, 100, 167, 250, 333, 500 KVA

Standard High-voltage & insulation level (BIL)

• • 7620/13200Y BIL: 95KV

  • 13200/22860Y BIL: 125KV

  • 13800/23900Y BIL: 125KV

  • 14400/24940Y BIL: 125KV

  • 34500GrdY/19920 BIL: 150KV

Standard de-energized before operating the tap changer

• • Two - 2½% taps above and below rated voltage

Standard secondary voltage & insulation level (BIL)

      The basic insulation level (BIL) of the secondary voltage shall be 30 kV.

• • 120/240 (3 bushings) 

  • 240/480 (3 bushings) 

  • 120 (2 bushings) 

  • 277 (2 bushings)

Standard Accessories: 

• • Externally operated off- load tap changer

  • Pressure relief device 

  • Stainless Diagrammatic name plate

  • Ground strap and bolt on Tank & LV 

Standard Accessories for CSP Type :

• • Externally operated off- load tap changer 

  • Pressure relief device 

  • Stainless Diagrammatic name plate 

  • Ground strap and bolt on Tank & LV 

  • Surge Arrester 

  • Primary Protective Link 

  • Secondary breaker / with overload reset and signal light