A generating station which converts heat energy of coal combustion into electrical energy is known as a steam power station. A steam power station basically works on t…

A n earth-fault usually involves a partial breakdown of winding insulation to earth. The resulting l eakage current is considerably less than the short-circuit current…

Buchholz relay is a gas-actuated relay installed in oil immersed transformers for protection against all kinds of faults. Named after its inventor, Buchholz, it is used…

The core-balance protection described above suffers from the drawback that it cannot provide protection against overloads. If a fault or leakage occurs between phases,…

Air Break Switch Definition:  The switch whose contacts open in the air and quenching of an arc achieves by compressed air, such type of switch is called an air break sw…

What is Air Circuit Breaker? These breaker employ a high pressure air blast and air quenching medium. The contact are opened in a flow of air blast est…