What is the circuit breaker for the Earth's leak?

Earth leak switch (ELCB) is a pre -protection device installed in a consumer unit (CU) or distribution plate (DB) primarily for protection against electric shocks. ELCB is basically a conventional circuit breaker equipped with a scanning coil and a blocking or latch mechanism. The coil is connected to the installation ground network, providing a return path for any voltage induced by a failure. Any voltage voltage that returns to the coil gives it, activates the latch mechanism and stumbles or off the circuit breaker. Although it is still predominant in many countries, the Earth's leakage is gradually replaced by residual current devices (RCD), which performs the same function, but rely on the current instead of voltage sensing.

abbreviations in unprotected domestic, commercial and industrial electrical installations are the main cause of electricity, fire and equipment. In the majority ofThe case is caused by a disturbance that includes a live wire that contacts the conductive part of the appliance or person during unprotected installation, causes electrical shocks, severe located heating and sparking. Unfortunately, in many cases it leads to death by electric shock or catastrophic fires and damage to the equipment. Although these types of faults always occur, the installation of a circuit breaker for the leakage of the Earth and complex grounding or provincial district in the installation can prevent the resulting damage or loss of life. This protection is achieved by providing a series of "emergency insulation communication" between the offer and consumer points in the circuit using the grounding system.

Earth leak variant is similar to the conventional main circuit breaker, with the exception of the inclusion of a sensing coil connected to its contacts using a latch mechanism. This scanning coil receives the above emergency messages immediately reduces the power supply to the installation if there is a failure. This is achieved by means of electromagnetic solenoidoThe effect that occurs when the coil is under tension. This process activates a blocking or latch system that immediately turns off the circuit breaker.

However, the Earth's escape circuit works, but it is essential that the communication line between the sensing coil and the rest of the installation is open. This is achieved by ensuring that all appliances, machines and outlets are equipped with properly connected ground lead, which returns to a consumer unit or distribution board. It is also essential that all terrestrial connections within the Cu are clean and that ELCB conductors are connected to the ground bus connector of the circuit and incoming ground point. If all of these requirements are met, any short circuit between live guidance and person, appliance or assembly sends tension back through the soil of the country leads to the coil, giving and reducing performance before serious damage or injury.

ELCB has been replaced in many countries with a residual current detection (RCD) that are more sensitive and reliableThey are more sensing than on the voltage for their operation. However, both units perform the same function and form critical parts of any electrical installation. For this reason, the Earth's and RCD leak circuit breaker should never be bypassed and regularly tested to ensure proper functioning.