There Is An Abnormality In The Pcba Circuit Board Inside The Smart Meter.
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If the meter still runs after the power is turned off during use of 3 phase wifi energy meter, in addition to external circuit problems, there is another possibility that is often overlooked - that is, there is an abnormality in the PCBA circuit board inside single phase wifi energy meter. PCBA is the core control unit of 3 phase smart energy meter, responsible for signal acquisition, data measurement and power-off control. Once the components are aged, the solder joints are poorly connected, or the program is abnormal, the power-off signal may not be executed correctly.
