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Standard Ratings
Single Phase/Conventional Type 5, 10, 15, 25, 37.5, 50, 75, 100, 167, 250 and 333 KVA
Single Phase/CSP Type 10, 15, 25, 37.5 and 50 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)