CBCT Connection | CBCT & ELR Relay / Earth Fault Relay and CBCT | CBCT Wiring

CBCT Connection | CBCT & ELR Relay / Earth Fault Relay and CBCT | CBCT Connection with ELR
In this video you will learn about CBCT Connection | CBCT & ELR Relay / Earth Fault Relay and CBCT | CBCT Wiring
The earth fault relay operates only for the internal fault of the protective zone. The earth fault relay must be very sensitive for sensing the fault. The relay is designed for sensing the fault current which is 15% more than that of the rated winding current. Such settings protect a restricted portion of the winding.
A ground fault (earth fault) is any failure that allows unintended connection of power circuit conductors with the earth. Such faults can cause objectionable circulating currents, or may energize the housings of equipment at a dangerous voltage.
Earth Leakage relays (ELR's) or also known as ground fault relays are residual current monitors (RCM's) that are used to detect potentially dangerous ground fault currents before they cause any hazard. Causes for ground fault currents: Inadequate insulation due to mechanical damage of cables and devices.
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