Monday, September 14, 2009

Electrical Transformers

Transformers - Transformers play vital role in power system. It mainly used to step up and step down the voltages. This can be classified in to two major categories. 1. Step up transformer 2. Step down transformer. Voltage in the transformer is directly proportional to the number of windings in the transformer. In step up transformer number of turns in secondary are more than primary turns. The output voltage of step up transformer is higher than primary voltage.
Number of turns in the secondary windings are less than primary winding. This is known as step down transformer. Step up transformers are mainly used in power stations where generated power is step upped for the purpose of transmission. Step down transformers are mainly used in substation where the voltage level of transmitted power is reduced for distribution purpose. Cooling of transformer winding is the one to be taken care.
Transformer oil is used for this purpose. Cooling of transformer will be seen in future.

1 comment:

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