The method and the device acquire and judge the alternating current directly, shorten the signal acquisition time and the protective time during overcurrent.
本发明直接对交流电流进行采集和判断，缩短了信号采集时间和电流过流时的保护时间。
The method and the device acquire and judge the alternating current directly, shorten the signal acquisition time and the protective time during overcurrent.
本发明直接对交流电流进行采集和判断，缩短了信号采集时间和电流过流时的保护时间。
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