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Answer Posted / khalid hussain shaikh
THIS TYPE OF HEAVY POWER TRANSFORMER COOLED BY THE FOLLWING
PROCESS.
1. ACTUALLY OIL IS THE MAIN INSULATION MEDIUM BETWEEN CORE
AND TRANSFORMER BODY.
2. OIL CONDUCTS HEAT FROM CORE/ WINDING TO BODY AND
RADIATORS.
3. BY METHOD OF ONAF, HEAT OF TRANSFORMER RADIATED BY
COOLING FANS.
4. IN ADDITION TO THIS WITH OFAF, PROCESS HEAVY PUMPS
CIRCULATES TRANSFORMER OIL TO RADIATORS AND FROM RADIATORS,
HEAT FURTHER , RADIATES AND COOLED FROM AMBIENT
TEMPERATURE.
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