New USB Waterproof Lithium Helmet Lamp High Brightness Industrial Head Mining Lamp

Emergency lighting fixtures are composed of several parts, including light source, light source driver, rectifier, inverter, battery pack, and sign lamp housing. Normally, 36V drives the light source to illuminate normally through the light source driver, while supplementing the battery pack with electricity through a rectifier. Even if the lighting is turned off after work, the rectifier still operates in a charged state, so that the battery pack is always in a full combat readiness state. When encountering an emergency situation and the mains power suddenly stops, the inverter will automatically start the inverter circuit, converting the low voltage energy of the battery pack into high voltage energy, and driving the light source to continue lighting.

Compared with independent control emergency lighting fixtures with built-in power supply, centralized control emergency lighting fixtures with centralized power supply have advantages such as easy centralized management, user self inspection, fire supervision and inspection, extended lamp life, and improved emergency evacuation efficiency. The system has good reliability, long service life, convenient maintenance and management, and low system price. However, centralized power supply and centralized control emergency lighting fixtures do not have a backup power supply (battery) inside each emergency lighting fixture. If the power supply line fails, it will directly affect the normal operation of the emergency lighting system. Therefore, there are special fire protection requirements for the laying of its power supply line. And the independent control emergency lighting fixtures with their own power supply have no special requirements for the power supply line because each emergency lighting fixture is equipped with a backup power supply (battery), and the failure of the power supply line will not affect the function of the backup power supply. When an emergency light fails, it usually only affects the light itself and has little impact on the entire system.