In this regard, in addition to strengthening management, we should also proceed from a technical point of view and rationally configure leakage protection devices according to actual conditions. The leakage protector of the main power supply is mainly to prevent the danger of electrical fire and the general protection of electrical short circuit, and to do a good job of backup protection for small leakage protection. The rated leakage current can be selected within the range of 200-500ma, and the rated leakage time can be selected within the range of 0.2-0.3 seconds. The method can greatly reduce the influence of leakage voltage, surge current, electromagnetic interference and other factors, and improve the selectivity and reliability of total leakage operation. When the secondary leakage protection within each leakage protection range is in an effective protection state, the probability of frequent tripping of the total leakage protector on site can be greatly reduced.
There is no effective secondary or tertiary leakage protection in the protected area.In the switch box, the last leakage protector is the main protection device for electrical equipment. Ultimately, higher RCDs may frequently shut off the brakes if they are not installed, damaged, or poorly selected. LED Transparent Film Screen has a lot of metal conductors and wires, if the wires are not well insulated, it will cause frequent leakage. There are also several sockets, and leakage protectors are often not installed, which will cause leakage. Only by forming an effective 2nd and 3rd level leakage protection mode on multiple protections can the frequent interference of leakage protectors be effectively reduced.
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