Answer / thiyagarajan r

VCB means Vacuum Circuit Breaker.Vacuum Circuit Breaker is always used in the HT side of the transformer and it act like a On/Off switch and prevent the power system in case of any faults by using Vacuum as the breaking mechanism.

Answer / s b mutha

VCB is used for switching of Transformer. Over current, Short Circuit and Earth fault protection also incorporated in VCB to protect your valueable transformer. During swiching of ON and OFF its contacts make and break in under Vaccum Bottles to protect from heavy spark during fault and on load tripping.

Answer / thakur ankit

VCB= vaccum circuit breaker ...
Breaker disconnect power supply . like your fan an light switch . ON means fan , tv start working that is air circuit breaker ... But when you use high power circuit to disconnect like 11000 kV and 33000 ... The air gap between then is charged and supply might be get some voltage due to air electron get charged that is why we vaccum breaker vaccum.means you understand nothing between them that islive wire and other wire that is off... And above 132 kV u used SF6 circuit breaker

Answer / satya

VCB means Vacum circuit breaker .Its acts as a switchlike fan and light.We use VCB in upto 33KV and 11KV .Its a onload switch and separate two circuit .

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a solar energy installation utilizes a three phase bridge converter to feed energy into power system through a transformer of 400v/400v.the energy is collected in a bank of 400v battery and is connected to converter through a large filter choke of resistance 10ohms.1.the maximum current through the battrey will be.2.the kva rating of the input transformer is.

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sir pls send the je exam - 2008 and other model question papers..

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