Quality appraisal of leakage protection devices

Leakage protection device is a very important safety measure for electrical equipment in modern life. The leakage protector can promptly detect leakage in the circuit. Once leakage occurs, it can quickly cut off the power supply to prevent electric shock accidents and protect personal safety. Leakage protectors can effectively prevent leakage in circuits from causing fires and protect the safety of buildings and electrical equipment. The use of leakage protectors can reduce damage to electrical equipment due to leakage, extend the service life of the equipment, and reduce maintenance costs.
In the case of leakage protection device quality appraisal, Zhongke Testing can provide leakage protection device quality appraisal services.

1. According to the protection function and structural characteristics: it can be classified into leakage protection relays, leakage protection switches, and leakage protection sockets.
2. According to the working principle: it can be classified into voltage-operated leakage protectors and current-operated leakage protectors.
3. According to the structural characteristics of the intermediate links: it can be classified into electromagnetic leakage protectors and electronic leakage protectors.
4, according to the rated leakage operating current value: it can be classified into high-sensitivity leakage protectors, medium-sensitivity leakage protectors, and low-sensitivity leakage protectors.
5, according to the action: it can be classified into instantaneous leakage protectors, time-delay leakage protectors, and inverse time leakage protectors.
6, according to the circuit of the main switch and the number of current poles: it can be classified into single-click two-wire leakage protectors, second-level leakage protectors, second-level three-wire leakage protectors, third-level leakage protectors, third-level four-wire leakage protectors, and fourth-level leakage protectors.

JB/T 11205-2011 DC leakage current sensor
JB 8979-1999 Leakage circuit breaker with overload protection

1. Cause: According to the relevant information provided by the client and the reported situation, the victim died while using the involved "boost pump and its leakage protection device" in the bathroom. After identification by the Public Security Bureau, homicide was ruled out and the cause of death was exposure to power lines. The user believed that the electric shock accident occurred due to leakage quality defects in the "booster pump and its leakage protection device" involved. In order to find out the facts of the case, the user applied to the court for appraisal of the "boost pump and its leakage protection device".
2. Process: Our company organized appraisal experts to conduct on-site inspection work at the scene involved in the case. The appraisal experts inspected the main distribution lines, floor distribution lines, distribution lines of the houses involved, and the bathrooms involved in the current building involved in the case. They also removed the "boost pump and its leakage protection device" involved in the case. After being signed and confirmed by all parties, our company's staff sealed it and brought it back.
3. Result: The appraisal expert group discussed and comprehensively analyzed the relevant information, on-site investigation and test data of the "booster pump and its leakage protection device" involved in the case, and made the following appraisal opinion:
The "boost pump and its leakage protection device" involved in the case did not have leakage defects related to the electric shock accident involved.