Automatic power-measuring product
The invention relates to an automatic power-measuring product which comprises a shell, a wiring terminal and an over-voltage protection device. The wiring terminal is arranged in the shell and is connected with the over-voltage protection device which comprises a rated resistor and a protective wiri...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Online-Zugang: | Volltext bestellen |
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| Zusammenfassung: | The invention relates to an automatic power-measuring product which comprises a shell, a wiring terminal and an over-voltage protection device. The wiring terminal is arranged in the shell and is connected with the over-voltage protection device which comprises a rated resistor and a protective wiring board; the rated resistor is connected in series with the wiring terminal, the protective wiring board is connected in series between the rated resistor and an internal load, and the wiring terminal is connected with an external power supply. The invention can realize the over-voltage protection of the automatic power-measuring product and can not influence the whole work of the automatic power-measuring product. |
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