Matt circuit

Tap-changer is a device changes the voltage ratio of transformation to get a better secondary operations (desired) of the network voltage / primary fickle. To meet the voltage quality of service according to customer needs (electricity distribution), the voltage output (secondary) transformer must be changed as desired. To meet this, then on one or on both sides of the transformer winding is made tap (bugs) to change the transformation ratio (ratio) transformer. There are two methods tap changer: Changing the taps in the transformer no-load conditions. Tap changer which can only operate to move the transformer tap transformer in a state does not load, called "Off Load Tap Changer" and can only be operated manually. Changing the load transformer tap-in condition. Tap changer which can operate to move the tap-transformer, the transformer load condition, called "On Loa d Tap Changer (OLTC)," and can be operated manually or automatically Transformers installed in substa...