Solar street lamps system earthing and lightning protection device

In order to safe, prevent to get an electric shock accident, solar lighting system grounding device should be adopted. Grounding can be divided into work, protect the grounding and lightning protection grounding. Grounding: 1, the job will low voltage network neutral point grounding directly, system grounding resistance should be



in order to safe, prevent to get an electric shock accident, solar lighting system grounding device should be adopted. Grounding can be divided into work, protect the grounding and lightning protection grounding. Grounding: 1, the job will low-voltage power grid neutral point grounding directly, system grounding resistance should be less than 10 Ω. 2, protect the earth, in order to prevent leakage when endangers one's personal and equipment safety, all electrical equipment exposed conductive parts through the grounding line, grounding resistance should conform to the requirements of the leakage protector installed action. Grounding: 3, in order to prevent electrical equipment lightning strike, lightning rod, wire, and lightning arrester and lightning protection grounding, grounding resistance should be less than 10 Ω. 4, zero: the metal casing of electrical equipment, metal frame and neutral ground wire, etc. Earth wire should be used insulated wire, and use the whole line, are not allowed to have a joint in the middle. Lightning arrester grounding line should choose the shortest distance to the grounding line. Protection device of the phase wire cross-sectional area S 16 or less was, minimum sectional area of the grounding line and line S. 1635, minimum sectional area of the grounding line and line S / 2. Grounding flat steel wire welding length 2 or more times the width of the flat.