Fire emergency lighting with accumulator should be started at the same time of power failure. The switching time driven by fire emergency power should be within 5 seconds. For emergency lighting for evacuation, the minimum illumination of the ground shall not be lower than 0.5 lx. Emergency lighting and evacuation indicator signs can be used as backup power supply, and the continuous power supply time should not be less than 20min; The continuous power supply time of high-rise buildings with height over 100m should not be less than 30min.

According to the production standard of fire emergency lamp:

    the time of the system shall not be less than 90min and shall not be less than the nominal emergency working time of the lamp]

    GB 50016 -- code for fire protection in architectural design GB 50016 -- code for fire protection in architectural design GB 50016 -- code for fire protection in architectural design

    "Code for fire protection design of high-rise civil buildings" GB 50045-95 (2005 edition) 9.2.6 emergency lighting and evacuation indicator signs, can use battery as backup power, and the continuous power supply time should not be less than 20min; The continuous power supply time for high-rise buildings over 1OOm should not be less than 30min];

    Here refers to the application of fire emergency lights in the building design fire code, the construction engineering design unit with reference to the application of the fire emergency lights minimum emergency time;

    Fire evacuation indicator signs and fire emergency lighting fixtures installed in buildings in accordance with GB 50016 -- 11.3.6 of 2006 shall not only comply with the provisions of this code, but also comply with the relevant provisions of the current national standards fire safety signs GB 13495 and fire emergency lighting GB 17945.