Electrical Power Transformer - Electrical Engineering Gate

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Friday, October 10, 2014

Electrical Power Transformer

Definition of Transformer

A transformer is a static machine used for transforming power from one circuit to another without changing frequency. This is a very basic definition of transformer
Transformers can be categorized in different ways, depending upon their purpose, use, construction etc. The types of transformer are as follows

Types of Transformer

Step Up Transformer & Step Down Transformer

  Generally used for stepping up and down the voltage level of power in transmission and distribution power network
Three Phase Transformer & Single Phase Transformer
 Former is generally used in three phase power system as it is cost effective than later but when size matters, it is preferable to use bank of three single phase transformer as it is easier to transport three single phase unit separately than one single three phase unit

Electrical Power Transformer, Distribution Transformer & Instrument Transformer

 Transformer is generally used in transmission network which is normally known as power transformer, distribution transformer is used in distribution network and this is lower rating transformer and current transformer &potential transformer, we use for relay and protection purpose in electrical power system and in different instruments in industries are called instrument transformer
Two Winding Transformer & Auto Transformer
  Former is generally used where ratio between high voltage and low voltage is greater than 2. It is cost effective to use later where the ratio between high voltage and low voltage is less than 2

Outdoor Transformer & Indoor Transformer
 Transformers that are designed for installing at outdoor are outdoor transformers and transformers designed for installing at indoor are indoor transformers

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