Instrument examination method based on electrical energy metering
A technology of electric energy measurement and electric energy meter, which is applied in the direction of measuring electric variables, instruments, measuring devices, etc., and can solve problems such as near open circuit, increased mechanical resistance, undercurrent method stealing electricity, etc.
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[0062] The present invention adopts the instrument inspection method, which is a quantitative inspection method. By using ordinary ammeters, voltmeters, and phase meters to perform on-site quantitative inspections, it can judge whether the metering equipment is normal or not, and can also be used when necessary. The standard electric energy meter verifies the consumer electric meter.
[0063] 1. Check with an ammeter
[0064] A. Check the current with a clamp ammeter
[0065] B. Use a clamp-on ammeter or an ordinary ammeter to check the current of the relevant circuit.
[0066] 2. Check with a voltmeter
[0067] Use the voltage range of an ordinary voltmeter or a multimeter to check whether the voltage of the metering voltage circuit is normal.
[0068] A. Check for loss of voltage or low voltage caused by open circuit or poor contact.
[0069] B. Check for abnormal voltage caused by wrong TV polarity connection.
[0070] C. Check the voltage drop of the circuit from the TV outlet to the ...
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