Tester is patrolled and examined on line in unloaded measurement of electric energy meter
The utility model belongs to the technical field of the electric energy measurement detects, concretely relates to tester is patrolled and examined on line in unloaded measurement of electric energy meter, the problem of the technique is solved for: the utility model provides a whether mutual -induc...
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| Hauptverfasser: | , , , , , , , , , , , |
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The utility model belongs to the technical field of the electric energy measurement detects, concretely relates to tester is patrolled and examined on line in unloaded measurement of electric energy meter, the problem of the technique is solved for: the utility model provides a whether mutual -inductor and electric energy meter are judged on line in the unloaded or shunt running of power consumption circuit wiring return circuit polarity and phase place exact tester is patrolled and examined on line in unloaded measurement of electric energy meter, the technical scheme who adopts does: a tester is patrolled and examined on line in unloaded measurement of electric energy meter which characterized in that: including MCU microprocessor, AD adc, LCD LCD, zero cross detection circuit, wave filter, sample voltage mutual -inductor and amplifier, zero cross detection circuit includes a zero cross detection circuit GL1, the 2nd zero cross detection circuit GL2 and the 3rd zero cross detection circuit GL3, the wave fil |
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