Monitor every feed-voltage and feed-current of DC output, every output state of switch, and state of fuse and lightning arrester. Under abnormal condition, monitor produces aural and visual alarm.
Secondly, for some problems in high voltage switches and low voltagefeed switches, new switching equipment is used to resolve the problem.
其次对于高压负荷开关及低压馈电开关部分存在的问题，则通过应用新型开关设备来解决。
3
The feed forward of network voltage and output current is proposed to decrease the impaction of voltage fluctuation on the performance of active power filter.