2. The upper lead (power cord) of the lightning arrester installed on the transformer table can be connected to the lower end of the drop-out fuse. When the drop-out fuse is closed, the arrester and transformer are put into operation at the same time; after the drop-out fuse is pulled open, they stop operating at the same time, which prevents the arrester from being frequently exposed to power frequency voltage or operating overvoltage.
3. The arrester must be installed vertically, and the inclination should not be greater than]50.
4. There should be enough space around the arrester, and the distance between the live part and adjacent wires or metal frames should not be less than 1. .35m, the distance between the .35 base and the ground shall not be less than 2.5m to prevent surrounding objects from interfering with the potential distribution of the arrester and reducing the gap discharge voltage.
5. The upper and lower leads of the arrester should be as short and straight as possible, no joints are allowed in the middle, and the connection should be secure. The length of its joints with busbars and conductors should not be less than 100mm. To prevent loosening, spring washers or double nuts can be used to tighten. The leads should not be too loose or tight, and no joints are allowed. The cross-section of copper wire shall not be less than 16mm, and the cross-section of aluminum wire shall not be less than 25mm.
6. The arrester base should be well insulated from the ground, and the ground down conductor should be reliably connected to the metal shell of the protected equipment and connected to the main grounding device.
