The DC system is normally supplied from a battery charger system, which is supplied from the lowvoltage 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。
3
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.