Leakage protector installation and use - Database & Sql Blog Articles

Factory direct sales - solid capacitor - patch aluminum electrolysis, to ensure that the factory first-class goods!

Leakage protectors are mostly used in low-voltage power distribution systems below 1 kV to prevent single-phase electric shock accidents caused by indirect or direct contact, to prevent electrical fires caused by electric leakage, to monitor or remove various one-phase ground faults, and to prevent electrical equipment. A technical measure of damage. Proper installation of the earth leakage protector is very important for the safety of people, equipment and the entire electrical system. According to the regulations, the power supply lines and equipment installed in the water, electrical equipment installed in wet and corrosive places, mobile electrical equipment, hand-held power tools, electrical construction equipment at construction sites, temporary electrical equipment, buildings Leakage protectors should be installed for various socket circuits, etc. So how do you install a leakage protector? The leakage protector should be installed in accordance with the requirements of the product manual, taking full account of the power supply line, power supply mode, power supply voltage and system grounding type. (1) The leakage protector is divided into two types: three-pole four-wire type and four-pole type, as shown in Figure 1. The leakage protector must be installed with strict distinction between the neutral and protective wires (device housing ground wire). The neutral line of the leakage protector shall be connected to the leakage protection circuit. The zero-protection line shall be connected to the neutral line power supply side of the leakage protector and shall not be connected to the load side. The neutral line after the leakage protector shall not be connected to the equipment. In part, the protection wire (device housing ground wire) should be grounded separately.

Figure 1 Two types of leakage protector (2) The neutral line on the load side of the leakage protector must not be shared with other circuits. (3) When the leakage protector is marked with the load side and the power supply side, it should be strictly in accordance with its regulations. (4) After installing the leakage protector, the grounding protection measures of the low-voltage power supply line and electrical equipment must not be removed. (5) After the leakage protector is installed, the test button should be operated to check its working performance and confirm that it can be put into use after normal operation. (6) Installation must be carried out by a qualified electrician trained by a national statutory body. In the daily use of the leakage protector, the test button should be checked once a month to see if the leakage protector is working properly. After the operation of the leakage protection, the inspection should be carried out. If the cause of the accident is not found, the test transmission is allowed once. If the operation is repeated, the cause must be found out and the continuous transmission is forcibly performed. The faulty leakage protector should be replaced in time. The use management and maintenance of the leakage protector should be carried out by a professional electrician. Non-professionals should not tamper with it. Except for the failure of the leakage protection itself, it is strictly forbidden to remove the forced power transmission.