Alert! System battery voltage is low.
警告！系统电池电压过低。
The DC system is normally supplied from a battery charger system, which is supplied from the low voltage AC system.
直流系统通常由蓄电池充电系统供电，蓄电池充电系统由低压交流系统供电。
It can extend the life of battery and decrease ups system failure rate to the problem of under-voltage, low capacity and discharge current not meeting load startup request.
主要针对UPS蓄电池段电压不够、容量不足或瞬间放电电流不满足带载启动要求等问题。可以延长蓄电池的使用寿命，降低UPS系统故障率。
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