how to protect transformer from hot day?
Answers
Answer:
Excessive or sustained airflow by excessive winds or fans: Generally, the high winds in the environment would make for cooler temperatures for the transformer but it can also happen that the high winds travelling horizontally may disrupt the cooling fans of the transformer so that they can no longer function well.
he transformer selected as a case study in this paper is 250 KVA distribution transformer which is widely used in Iraqi electricity network. Fig. 1.a. shows a picture for this transformer while Fig. 1.b represents a schematic drawing illustrating the outer view of this transformer. The transformer consists of (coils and core assembly) which consists of three copper coils and a steel core linking them, all these items are immersed in transformer oil contained in the transformer body which equipped with fins to increase the heat transfer area. The transformer oil play two important roles, as a cooling medium transmit the heat generated in coils and core into outer walls to dissipate it and as an electric insulator. According to the available data the heat generated in transformer in full load situation is 1000 W from each coil and 500 W from core. This heat generated must be dissipated to maintain the temperature of oil at certain accepted level.
Excessive or sustained airflow by excessive winds or fans: Generally, the high winds in the environment would make for cooler temperatures for the transformer but it can also happen that the high winds travelling horizontally may disrupt the cooling fans of the transformer so that they can no longer function well, thus
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