Since long time no, the battery can not be charged and the voltage is too low, PLC program is lost.
由于长时间不用，电池得不到充电而电压过低，PLC程序丢失。
At the time of failure, no matter what kind of start state of voltage phase, the zero-sequence transient current has the characteristic of inverse phase.
在故障时刻，无论故障相电压的相位处在何种初始状态下，都有零序电流反向的特征。
The protection functions include three-section over-current protection, inverse-time over-current protection, three-phase one-shot no-voltage auto-recloser and so on.
保护功能有三段过电流保护、反时限过流保护、三相一次检无压自动重合闸等。
The protection functions include three-section over-current protection, inverse-time over-current protection, three-phase one-shot no-voltage auto-recloser and so on.
保护功能有三段过电流保护、反时限过流保护、三相一次检无压自动重合闸等。
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