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某银行计算机系统的一台 SANTAK UPS-500不间断电源,出现了如下故障现在:开机后可听见机器内继电器的动作声,且面板上的故障灯常亮,蜂吗器长吗。一时未能直接判定其故障部位。后经开机检查,发现不间断电源内部的蓄电池已基本放电完毕,两只电池的电压分别降到5.8V 和3.1V,距12V+12V 的要求电压相差甚远。于是,换上电压正常的蓄电池组,并将该机接通市电,但一开机便立即切换到逆变器工作状态,电机内蓄电池组放电供出220V 方波,说明
A bank computer system, a SANTAK UPS-500 uninterruptible power supply, there has been the following failure Now: After boot can hear the sound of the relay inside the machine, and the fault light on the panel is always on, the bee long. A moment can not directly determine the fault site. After the boot check and found that the internal uninterruptible power supply battery has been basically discharged, the voltage of the two batteries were reduced to 5.8V and 3.1V, 12V + 12V from the required voltage is far from. So, put the battery voltage is normal, and the machine connected to the city electricity, but immediately switched to a working state inverter, the battery discharge within the motor for 220V square wave, indicating