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使用UPS做应急照明电源是近几年发展起来的,这种方案的优点较多:一是应急照明灯具使用普通照明灯具:二是由于UPS对电池有较好的充电特性,能延长电池寿命,从而保证整个应急照明系统有较长使用寿命;三是在市电故障时,UPS能输出稳定电压,使应急照明电源电压不随时间延长而降低。但是,UPS系统较贵,若选用长寿命电池,整个应急照明系统成本很高,这些因素限制了UPS应急照明系统的推广。
Emergency lighting using UPS power is developed in recent years, this program has more advantages: First, emergency lighting fixtures using ordinary lighting: Second, because the UPS has better battery charging characteristics, can extend battery life, So as to ensure a long service life of the entire emergency lighting system. Third, when the mains fails, the UPS can output a stable voltage so that the emergency lighting power supply voltage does not decrease with time. However, the UPS system is more expensive. If the long-life battery is used, the cost of the entire emergency lighting system is very high, which limits the popularization of UPS emergency lighting system.