Verify ac line voltage phase and frequency with the controller data plate on the enclosure door prior to connecting ac power.
在连接交流电源之前，请验证交流电压、相位和频率是否与控制装置外壳门参数板上的相应数据相同。
By making changes of reference voltage phase diagrams of load, this method can enlarge the compensation range and decrease the energy output of DVR.
该方法通过对负载参考电压相角的旋转和幅值的“伸缩”，扩大了DVR的补偿范围，减少了D VR的有功输出。
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。
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