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What are the protection functions of leakage circuit breakers?

Publish Time: 2023-12-18
The protection function of the leakage circuit breaker is one of its core features, which mainly includes two protection functions: overload long-time delay and short-circuit instantaneous protection.
First of all, the leakage circuit breaker has an overload long-delay protection function. When a line or equipment is overloaded, the leakage circuit breaker can automatically cut off the circuit to prevent the equipment from overheating or damage. This protection function is achieved by detecting the current and voltage of the line or equipment. When the current or voltage exceeds the set value, the leakage circuit breaker will trigger the protection mechanism and cut off the circuit.
Secondly, the leakage circuit breaker also has the function of instantaneous short-circuit protection. When there is a short circuit in a line or equipment, the current will increase instantly, causing damage to the equipment or causing a fire. The leakage circuit breaker can quickly detect this abnormal current and immediately cut off the circuit to prevent further expansion of the short circuit fault. This protective function is fast and reliable, ensuring the safety of equipment and personnel.
In addition, the leakage circuit breaker also has leakage protection function. When there is a leakage in a circuit or equipment, the leakage current will flow through the earth and form a loop. The leakage circuit breaker can detect this leakage current and immediately cut off the circuit to prevent electric shock accidents. This protective function is of great significance to ensure personnel safety.
In short, the protection function of the leakage circuit breaker is very comprehensive and can ensure the safe operation of lines and equipment. In the power system, the leakage circuit breaker is an important protection device, which can effectively prevent the occurrence of overload, short circuit, leakage and other faults, and ensure the stability and reliability of the power system.
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