Yes, you right. Further inforamtion on working principle of ELCB/RCCB is provide below.
RCCB based ELCB comprises of a three winding transformer, that has two primary windings and also one secondary winding. Neutral & line wires work as the two main windings. A wire wound coil is the minor winding. The flow of current through the minor winding is “0” in the stable condition. In this condition, the flux owed to the current over the phase wire will be deactivated by the current through the neutral wire, meanwhile the current, that flows from the phase will be refunded to the neutral.
When an error occurs, a slight current will run into the ground also. This creates a confuse between line and neutral current and that makes an unstable magnetic field. This encourages a current flow through the minor winding, which is associated with the sensing circuit. This will detect the outflow and direct signal to tripping system.
This type of circuit breaker is used in situations where there is a sudden shock or fault happening in the circuit.
For instance, a person suddenly enters in contact with an open live wire in an electrical circuit. In that situation, in the absence of this circuit breaker, a ground fault may occur and an individual is at the hazardous situation of receiving a shock. But, if the similar circuit is defended with the circuit breaker, it will tour the circuit in a second therefore, avoiding a person from the electric shock. Therefore, this circuit breaker is good to install in an electrical circuit.
The characteristics of an RCCB based ELCB mainly include the following
-Both wires phase and neutral are connected through RCCB
-Whenever there is any ground fault occurs, then it trips the circuit
-The amount of current supplies through the line should go back through neutral
-These are a very effective type of shock protection
I hope above clarifies the situation. Feel free to contact in case of any further query. Thanks.
