ELCB working principle; Difference between ELCB and RCCB/RCD
Earth Leakage Circuit Breaker or ELCB As clear from the name these circuit breakers are used for protection against electrical shock in case of leakage currents. ELCB get tripped whenever there are leakage currents in circuit. There are two types of ELCB’s:- 1. Voltage ELCB 2. Current ELCB Now let’s discuss the same:- 1. Earth leakage circuit breaker Voltage Type:- As clear from the name these are voltage operated ELCB’s. These ELCB’s consists of relay coil . This relay coil is connected to the metallic body of equipment which is to be protected from earth leakage at one end and at other end it is connected to ground wire. If any fault occurs such as live wire touches the body than there will be voltage difference occur across the terminal of coil and earth. This voltage difference causes current to flow thus will operate relay and trips the ELCB. Voltage ELCB’s are available in various ranges these actuate as per limit desc...