Emergency lights are one of the commonly used lamps, which are mainly used to provide lighting for people after the power failure in an emergency. Figure 1 is a commonly used dual-throw emergency light in the past. As the name suggests, this type of lamp is two lamp heads, power supply and control device.

Imagine, if a fire occurs and the emergency light does not work properly, how can people evacuate and escape?

Recently, the author has observed and tested a residential building, and the results are worrying. There are a total of 8 dual-throw emergency lights on the 22nd floor. The delivery time is November 2012. It was found that all 8 lights did not work properly and one light was lost. The other dual-throw emergency lights did not light up. In any response, the plug of one lamp was not connected to the socket, and the sockets of the other lamps were not fastened. There is obvious corrosion on the surface of the lamp. Is the internal circuit board corroded?

Such dual-throw emergency lights should not be used in civil buildings:

        1. Use socket power supply, the power supply is unreliable. Sockets are provided for ease of use. For clear loads such as emergency lighting fixtures, reliability should be placed first. Generally, the socket circuit is a three-level load, which does not require high power supply, and the reliability of the connection between the socket and the plug is also reduced.

        2. The ordinary socket circuit is not a fire protection circuit, or the dual-throw emergency light is connected to the socket. This circuit mixes fire loads with non-fire loads, which does not meet the requirements of the specification.

        3. The circuit of the socket circuit is an ordinary circuit, which does not meet the requirements of the specification, especially the plug circuit attached to the lamp is exposed, without any protection, and is the weakest link.

       4. Management is difficult. When the number of dual-throw emergency lights is large, it is difficult to manage and maintain, and some properties are neglected to manage, resulting in such lamps not working properly.

GUANGDONG NASITER (INTERNATIONAL) LIGHTING CO., LTD. Is a professional LED manufacturer specializing in the production of emergency lighting fixtures. Each emergency lighting fixture is of high quality and the quality is guaranteed. Please rest assured to buy.