Differential mode interference influence testing device and method for electric energy meter
The invention discloses an electric energy meter differential mode interference influence testing device and method, a voltage output end of an electric energy meter calibration table is connected to an electric energy meter through a voltage isolation transformer, an oscilloscope is connected with...
Gespeichert in:
| Hauptverfasser: | , , |
|---|---|
| Format: | Patent |
| Sprache: | chi ; eng |
| Schlagworte: | |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Zusammenfassung: | The invention discloses an electric energy meter differential mode interference influence testing device and method, a voltage output end of an electric energy meter calibration table is connected to an electric energy meter through a voltage isolation transformer, an oscilloscope is connected with an electric energy meter sampling voltage through a voltage probe, and a current output end of the electric energy meter calibration table is connected to an L input end of the electric energy meter through a current isolation transformer; the other end of the current isolation transformer is connected with the L output end of the electric energy meter through a decoupling resistor to form a current loop; the photoelectric conversion sensor is connected with the computer through the sampling module, the inverted output end of the operational amplifier is connected with the detected electric energy meter, and the normal output end of the operational amplifier is connected with the detected electric energy meter thro |
|---|