What is Transformer?
Transformer is an AC machine that transfers electrical energy from one electrical circuit to another. Since there is no moving part in Transformer, it is also called Static device. Due to its static nature it requires minimum amount of repair and maintenance.
Types of Transformer
(1) Step-up Transformer:- When Output Voltage of a Transformer is higher than its input Voltage, it is called step up transformer. Such transformer’s are used at Power stations where generating voltage i.e. 11 KV is raised to higher levels i.e. 66/132/220/400 KV for transmission purpose to Sub-stations.
(2) Step Down Transformer:- When Output Voltage of a Transformer is lower than its input Voltage, it is called step down transformer. Such Transformer’s are used at Sub-stations to lower down voltage from 66/132/220/400 KV to 33KV and 11 KV for distribution to various Industrial Consumer’s and also Distribution Transformer’s to fed house hold consumers.
(3) Distribution Transformer:- These type of Transformer is used to convert 11KV voltage level to 440V which is used by House-hold various commercial consumers like shops, Panchayat ghar’s etc. Distribution Transformers are mostly seen at vicinity of house-hold consumers installed over H type structure. Since it converts HT voltage to LT voltage so these are used at nearby consumer’s to eliminate voltage drops