Emergency lighting related knowledge

Emergency lighting is different from a normal lighting lighting classification, it includes the evacuation lighting, standby lighting and security lighting. The evacuation belongs to fire lighting lighting, standby lighting should be distinguished according to the requirements of the different places, the nature of the load. A, emergency lighting power supply 1, considering the high and low voltage power distribution system there is no guarantee that the time needed for the power switch, the battery as emergency standby power is necessary. According to the size of the emergency lighting load and the requirement to the conversion time, continuous working time also can be used independently of the normal power supply diesel generator set. 2, emergency lighting power supply device normal mains + belt is recommended for the emergency lights battery is more reliable, and economical solution. In the selection of emergency light should be to ensure that the product USES the battery with good quality. 3, conditional engineering emergency lighting power supply device can be used normal mains + EPS concentrated power solutions. As EPS, costs are falling, for emergency lighting control and management the recommended to demand higher places. 4, normal mains refers to categories according to different building load ( As a class load demands double power supply, the second class load double circuit, three kinds of load without special requirement) Design technique for power supply, the normal distribution, Such as using special emergency lighting distribution box, special floor lighting distribution circuits, etc. ) Should be ok. 5, a set of emergency lighting is not recommended to use normal mains + concentrated EPS power supply unit, too much overlap configuration of the emergency lights battery, in order to save investment. 6, emergency lighting power supply should keep working hours: escape lighting shall be determined in accordance with relevant design code for fire protection; Standby lighting should be according to the requirements of continuous work time, should not be in accordance with the requirements of civil air defense in wartime considering the working time of normal standby lighting, in order to save investment. Second, the loop control and organization 1, fire emergency lighting equipment should adopt special power supply circuit; Each fire zone shall be independent emergency lighting circuits. 2, when using dispersed power supply, in each layer, Or layer is no more than 3 ~ 4) Should set up special fire emergency lighting distribution box or special fire distribution box; And should be realized in distribution box in two independent power supply ( Or double lines) The automatic switching. 3, evacuation lighting using emergency light with battery, the normal power supply can meet this layer ( Or this area) The distribution of the electric box dedicated circuits, or pick up from the floor ( Or this area) A special fire distribution box. 4, fire emergency lighting should be able to confirm the fire, cut off the part of fire power supply automatic input at the same time. Can be used according to different engineering requirements of fire emergency lighting is designed. the control mode, also can adopt decentralized local control mode. 5, usually don't use escape lighting should be in the fire station, or substation centralized control. 6, the standby lighting as part of the normal power supply when used at the same time, should set up a distribution circuit and control switch; Standby lighting in the accident state, when using only application work automatically when normal power failure. 7, evacuation lighting and standby lighting circuit should be separated. 8, for ease of management and control, vertical distribution, stair lighting can be used to access emergency lighting power supply. Three, 1 line installation and protection, fire emergency lighting circuit should be equipped according to the requirement of the fire distribution circuit. 2, fire emergency lighting system branch line should not cross fire partition, branch lines should not cross fire partition. 3, fire emergency lighting using wire should meet the requirement of fire code, including evacuation lighting using wires, unfavorable use fire-resistant wire, to save investment. 4, evacuation lighting, standby lighting socket back to the road should be not installed. 5, emergency lighting dimming device should not be used. 6, fire emergency lighting should not be installed power leakage protection, earth fault occurred when the line, the appropriate set of single-phase grounding alarm device. To protect the safety of firefighters, fire evacuation lighting after specification allows continuous working time can be removed. 7, scattered installed emergency lights should be set up with a battery power differential ( Charging) Line. 8, when power differential line from the distribution box, according to the following situation consider protection: 1) When the main distribution box switch protection setting value below 20 a, don't consider additional protection; 2) When the main distribution box switch protection setting value is greater than 20 a, appropriate USES with indicator fuse protection. Extract more from the distribution box identification thread, appropriate to consider each phase a fuse protection. Four, emergency lighting layout 1, fire emergency lighting layout should be in accordance with the specification requirements, protect enough illuminance and visual range. 2, the layout of evacuation indicator lighting should work closely with civil engineering, hvac and other type of work, ensure that the fire shutter when the fire, smoke hanging wall equipment remain effective after work. Five, the application of new light source 1, emergency lighting lamps and lanterns should promote the use of new energy saving light source. 2, when choosing the spontaneous type evacuation indicator light lighting, shall ensure that the environment under the background of visual range; 3, singing and dancing entertainment due to not open during the day, without excitation of normal lighting, spontaneous light should not be used as evacuation lighting type products. 4, spontaneous type indicator light illumination in important buildings and places, not a substitute for fire evacuation lighting, only can be used as auxiliary evacuation lighting.