【 Weak current College 】 high-rise building emergency lighting design---Power By 【 China power house network 】

1 set of emergency lighting
Our modern architectural characteristics: first, multi-layered, vertical evacuation distance long; the second is the scale of the personnel-intensive; third, the domestic production of vehicles for fire a few in number, quality, and the maximum working height is limited. The above point is our modern architecture in the evacuation area-specific risk factors, and thus the civil construction electricity design specifications) to set the location of emergency lighting, emergency lighting power requirements as well as linkage emergency lighting methods do detailed provisions.
1.1 emergency lighting power supply requirements
Emergency lighting power should press the emergency source of electrical power to the power supply. Emergency power supply included: independent of the normal power; the second power; batteries diesel generator.
1.2 emergency conversion time
Specification provides for normal power failure, the conversion to the emergency power supply conversion time required for evacuation lighting and alternate lighting should not be greater than 15s, safety lighting is not greater than 0.5s.
1.3 transitional power
Diesel generator start time unable to meet the emergency source of electrical power conversion time requirements (civil construction electrical design code) provides that in important places, there should be set with the emergency lighting battery or batteries-powered standby lighting as generator pre-operating period of transition.
1.4 emergency lighting of emergency power distribution principles
Distribution principles are:
(1) AC + battery;
(2) battery for decentralized comes with battery type for centralized power supply battery type. 2-spoke with battery type
This decentralized way convert quickly, easily, and decrease emergency lamp wiring simple ease of construction, battery damaged impact surface is small, but quality requirements for distributed storage battery with high, because this way, no special requirements for power, as long as the signal line no electricity, lights automatically converted to the in-house battery, so the cost is high. And difficult to check the quality of emergency lighting in the campaign, operation and maintenance of heavy workload. 3-centralized power supply battery
Because of these drawbacks of decentralized emergency light, we propose a centralized power supply type will be scattered in various lighting of batteries together, unified switching power supply integrated.
Emergency power supply usually no electricity, only emergency cases start connected.
Centralized control of emergency lighting control can be divided into:
(1) usually do not ignite, outage emergency lighting;
(2) the usual light the uncontrollable;
(3) normal ignition controlled, fire fire power through linkage control signal is connected, to ensure that fire controlled lamps no longer under the control of the switch, all lit.
Centralized power supply battery-less way to invest for ease of maintenance and management features in the fire to reach the active control, fire control, battery failure surface, this is in the design process should be fully taken into account.