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.

监测各直流馈电输出的电压、电流，各馈电输出开关状态、熔断器状态和防雷器状态，当发生异常情况时发出声光报警；

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The work was originally planned for January but had to be brought forward to take advantage of the current feed-in tariffs.

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