GB 50222-2017 第4.0.8条
| | The continuous power supply duration of the backup power for fire emergency lighting and evacuation indication signs in buildings shall not be less than 30 minutes (for densely occupied places such as hotels, it shall not be less than 30 minutes; however, according to the Technical Standard for Fire Emergency Lighting and Evacuation Indication Systems GB 51309-2018, for hotel buildings with a height exceeding 100 m, it shall not be less than 90 minutes; for other hotels, it shall not be less than 30 minutes). |