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Transformer Secondary Current Ratings

POWER TRANSFORMERS H.V./L.V. Ampere ratings
  Current In Amps
Rating in KVA 11KV 33KV 66KV 110KV
500 26.25 8.75 4.4 2.625
1000 52.50 17.5 8.75 5.25
2000 105.0 35.0 17.5 10.50
3000 157.5 52.5 26.25 15.75
5000 262.5 87.5 43.75 26.25
8000 420.0 140.0 70.50 42.00
10000 525.0 175.0 87.50 52.50
         
PARALLEL OPERATION
Conditions for parallel operation of transformers:
1   Should belong to the same vector group.
2   Should have the same polarity.
3   Should have the same phase relation.
4   Should have the same rated Primary and Secondary Voltage.
5   Should have approximately the same percentage impedance (within 10%)
         

 

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