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Pole Type Transformer

last update: Oct. 14 2011

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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 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
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servicekva@gmail.com,
Nov 2, 2009 5:51 AM