Emergency Light Manufacturers , Emergency Lighting System Design: What To Follow?
The Emergency Light Manufacturers said: After the fire broke out, the fire emergency lighting and evacuation indication system controlled all fire emergency lighting and signage lights to immediately enter the emergency work state, helping personnel to escape safely, quickly and orderly to prevent secondary disasters.
Emergency Light Manufacturers will discuss the design of emergency lighting systems from four aspects
A. General requirements
1. Emergency conversion time
In the case of a fire, such as the interruption of normal lighting, people are very likely to cause panic. For a general place where people are more familiar with the environment, an instinctual reaction to escape occurs within a few seconds. At this time, the interruption of lighting may cause great confusion; for densely populated places, the mobility of personnel is large, and the characteristics and state of personnel are complicated, such as shopping malls. Large public buildings such as airports and stations will interrupt the lighting time for a long time, which will inevitably lead to casualties such as bruises and injuries. Therefore, the emergency conversion time of personnel-intensive places should not exceed 1.5s, and the emergency conversion time of other places should not exceed 5s.
2, the initial capacity of the battery pack
The initial discharge time of buildings of 100m and below is not less than 90min; the initial discharge time of buildings above 100m is not less than 180min; the initial discharge time of refuge is not less than 540min.
B. Power supply design
1. Power supply in the plane evacuation area
The power supply in the plane evacuation area is powered by trunk or radial power from the main power of the emergency lighting main distribution cabinet, and the emergency lighting distribution box, emergency lighting centralized power supply or emergency lighting distribution electric device is arranged according to the fire partition; non-personnel dense places can be A common emergency lighting distribution box is set in multiple fire zones, but each fire zone uses a separate emergency lighting power supply circuit; the main power source of the emergency lighting distribution box is taken from the standby lighting distribution box of the fire zone; The main power source of the emergency lighting distribution box sharing the fire protection zone shall be taken from the power supply side of the emergency power supply trunk or the standby lighting distribution box.
For the fire protection zone of more than 2000m2, the emergency lighting distribution box or the emergency lighting distribution device shall be separately set; the fire protection zone of less than 2000m2 may adopt the special emergency lighting circuit; when the emergency lighting circuit is laid vertically along the cable pipe well, the public building emergency lighting distribution box shall be powered. The range should not exceed 8 floors, and the residential building should not exceed 16 floors; the total area of the fire protection zone covered by the lamps of an emergency lighting distribution box or emergency lighting distribution device should not exceed 4000m2, and the subway tunnel should not exceed 1/1 of the section. 2, the road traffic tunnel does not exceed 500m.
When the emergency lighting centralized power supply and the emergency lighting distribution electric device are in the same plane layer, the emergency lighting power supply adopts the radial power supply mode; when the two are not in the same plane layer, and the distribution branch trunk line is laid along the same cable tube well, the emergency lighting centralized power supply can be Radial or trunk power supply. The commercial part of the commercial and residential building should be separated from the living part, and the emergency lighting distribution box or the centralized power supply for emergency lighting should be separately set.
2. Power supply for vertical evacuation areas and their extended areas
Each vertical evacuation channel and its expansion zone can be considered as an independent fire protection zone, and vertical distribution mode is adopted; for each vertical evacuation channel and expansion zone with a building height of more than 50m, emergency lighting distribution box or emergency lighting should be separately provided. Power distribution unit.
3. Refuge floor and aviation evacuation site
The fire emergency lighting of the refuge floor and the air evacuation site is radiated by the power distribution station.
4. Power supply for fire protection work areas and their evacuation walkways
Fire control room, high and low voltage power distribution room, generator room and battery type self-supplied power supply room, fire pump room, smoke and smoke exhaust machine room, fire elevator machine room, BAS control center machine room, telephone room, communication room, large computer room, In the security control center computer room and other places where people are on duty in the event of a fire, alternate lighting and evacuation lighting shall be provided at the same time; the floor distribution room (room) and other places where the fire is unattended may not be used for equipment lighting and evacuation lighting; Common luminaires can be used and powered by dual power supplies.
5, lighting distribution circuit
The working current of the power supply circuit of AC220V or DC216V lamps should not be greater than 10A; the working current of the power supply circuit of safety voltage lamps should not be greater than 5A; the number of lamps connected to each emergency power supply circuit should not exceed 64; the centralized power supply for emergency lighting is distributed by emergency lighting. The device is equipped with fire emergency luminaries; the emergency lighting centralized power supply, the emergency lighting distribution device and the emergency lighting distribution box are not equipped with residual current action trip protection devices in the input and output distribution circuits. In addition to the high space, the emergency working voltage in the evacuation area uses a safe voltage.
6. Output of emergency lighting distribution box and emergency lighting distribution electric device
The output loop does not exceed 8 channels; the output current of each loop when using a safe voltage is not more than 5A; when the non-safe voltage is used, the output current of each loop is not more than 16A.
C. Design of non-centralized control system
1, the system’s emergency conversion
The place where the fire automatic alarm system is not set, the system is transferred to the emergency working state after the normal lighting is interrupted; the place where the fire automatic alarm system is set, the self-contained power non-centralized control system is connected by the fire automatic alarm system to each emergency lighting distribution box. Conversion of working status. The centralized power supply non-centralized control system is connected by the automatic fire alarm system to each emergency lighting centralized power supply and emergency lighting distribution electric device to realize the working state conversion.
2. Design of centralized power supply and distribution device for emergency lighting
The control device for the centralized power supply of the emergency lighting is installed in the fire control room, and the building of the fire control room is not provided. The centralized power control device for the emergency lighting is installed in a place where personnel are on duty. The system of centrally setting the battery pack, the centralized power supply for emergency lighting can manually control the working state of the fire emergency lighting distribution electric device. The system for dispersing the battery packs has a control device capable of manually controlling the operating states of the battery packs and the switching devices.
D. Design of centralized control system
1. Control method of centralized control system
After receiving the fire alarm signal or the linkage control signal of the fire automatic alarm system, the emergency lighting controller controls the corresponding fire emergency lighting fixture to be transferred to the emergency working state.
The self-contained power centralized control system realizes the working state transition by the emergency lighting distribution box and the corresponding fire emergency lighting fixtures and other accessories in the emergency lighting controller control system.
The centralized power supply centralized control system realizes the working state conversion by the emergency lighting centralized power supply, the emergency lighting distribution electric device and the corresponding fire emergency lighting fixtures and other accessories in the emergency lighting controller control system.
2, emergency lighting controller design
When there is only one emergency lighting controller in the system, the emergency lighting controller is set in the fire control room or a place where personnel are on duty; when there are multiple emergency lighting controllers in the system, the main controller is set in the fire control room, and other controllers It can be set in a place such as a power distribution room. The total number of emergency lighting centralized power supplies, emergency lighting distribution electrical devices, emergency lighting distribution boxes and fire emergency lighting fixtures directly controlled by each emergency lighting controller is not more than 3,200. The main power supply of the emergency lighting controller is powered by the fire power supply, and the backup power supply of the emergency lighting controller at least causes the controller to work for 3 hours after the main power interruption.
The Emergency Light Manufacturers stated that the above content is for technical exchange only. The site design and construction should be based on the specific conditions of the site and subject to relevant national standards and regulations.