Leakage circuit breakers work properly involving personal and property safety, electricians in their daily work must be carried out in accordance with the provisions of the "Leakage Circuit Breaker Installation and Operation Regulations". With residual leakage protection molded case circuit breaker manufacturers often check the lines and power equipment, eliminate the hidden danger of leakage, to ensure the long-term efficient operation of the leakage circuit breaker.

(1) with residual leakage protection molded-case circuit breaker manufacturers regularly test the reliability of the action. Leakage circuit breakers in operation, the user should test once a month according to the test button; leakage circuit breakers must be tested once after working under overvoltage; the number of examinations should be increased during the thunderstorm season; dangerous places and temporary use of leakage circuit breakers should also increase the number of tests; leakage circuit breakers after shutdown should be tested once before use.

(2) After action, no forced power transmission. After the action of the earth leakage circuit breaker, if no accident point is found after inspection, a trial power supply is allowed, and when it is operated again, the cause is identified, appropriate measures are taken and the power supply is restored only after treatment. Forced transmission of electricity is strictly prohibited and shall not be stopped in order to ensure electrical safety.

(3) When a fault occurs, repair or replace it in time. Leakage circuit breaker damage can not be used, should immediately send a person to check or replace, found abnormal, should promptly identify the cause, is strictly prohibited to use with disease. If the leakage circuit breaker misoperation or refusal to move, the cause may be the leakage circuit breaker itself, may also be the cause of the line side, should be carefully and specifically analyzed, shall not remove or adjust the leakage circuit breaker internal devices without authorization.

(4) after the short circuit tripped, must be repaired to continue to use. Leakage circuit breaker short-circuit tripped, check the main contacts, found to have serious burns or pits, must be repaired before continuing to use. However, it should also be noted that electricians who are not qualified to carry out testing are not advocated to remove and repair earth leakage circuit breakers. This is because after maintenance of the earth leakage circuit breaker, especially after replacing the main equipment, in order to ensure that its protection function is correct and effective, it needs to be tested for its action characteristics, action characteristics, action time, limit action time and other items. In addition, after the earth leakage circuit breaker has been disconnected due to a fault in the protected line or appliance (leakage, electric shock, overload or short circuit), the operating handle is in the tripping position, i.e. the middle position. After identifying the cause and removing the fault, the operating handle should be lowered to its own position and the operating structure "pulled" before the closing operation can be carried out.

(5) with residual leakage protection molded-case circuit breaker manufacturers Rui Rui electrical a comprehensive annual inspection of the leakage circuit breaker. After the leakage circuit breaker is put into operation, the protection system is inspected once a year. The inspection is to test whether the leakage action value of the protector is in line with the regulations; check the grid and electrical equipment insulation resistance, measure the neutral leakage current, eliminate various leakage hazards in the grid; check the transformer and motor grounding device for loose or poor contact.