Explosion -proof safety bars

The utility model discloses an explosion -proof safety bars, including input, output port, connect gradually fusing protected location, steady voltage unit, limiting unit between input, output port, wherein, the steady voltage unit includes the parallel circuit who comprises different zener diode. Prevent too high voltage, entrance guard's equipment in current input hazardous area. The too high mains voltage who lasts can trigger the disconnected protect function of fast express -melting of guard grating for the guard grating can be fast and the consumer disconnection. Do not influence the function and the use of present explosion -proof entrance guard's equipment. Through this explosion -proof safety bars, the explosion -proof entrance guard equipment trouble in hazardous area can not produce the electric spark. 本实用新型公开了种防爆安全栅，包括输入、输出端口，依次连接在输入、输出端口之间的熔断保护单元、稳压单元、限流单元；其中，稳压单元包括由不同稳压二极管组成的并联电路。防止过高的电压，电流输入危险区的门禁设备。持续的过高电源电压会触发安全栅的快速熔断保护功能，使得安全栅能够快速与用电设备断开。不影响现有防爆门禁设备的功能和使用。通过本防爆安全栅，危险区的防爆门禁设备故障不会产生电火花。