The emergency lighting power supply is a state in which the normal power supply no longer provides the minimum brightness required for normal lighting, that is, when the normal lighting power supply voltage drops below 60% of the rated voltage, the power is switched to the emergency lighting power supply. Emergency lighting power can be roughly divided into the following types: (1) A feeder line from the power grid that is effectively separated from the normal power source. (2) Diesel generator sets. (3) Battery pack: It is divided into the following cases: 1 lamp with its own battery, that is, its own power supply emergency light. 2 Centrally set battery packs. The battery packs are set in 3 zones. (4) Combined power supply: It is a combination of any two of the above and three power supply modes. Woven Wire Mesh,Woven Steel Mesh,Metal Woven Wire Mesh,Architectural Woven Mesh ANPING HONGYU WIREMESH CO.,LTD , https://www.hongyu-wiremesh.com