Three -phase electric heater protection device and system and air conditioner
The utility model discloses a three -phase electric heater protection device and system and air conditioner. Wherein, three -phase electric heater protection device three -phase electric heater, three phase power supply module, control module and three -phase AC contactor are supplied power for thre...
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| Hauptverfasser: | , , , , |
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| Format: | Patent |
| Sprache: | chi ; eng |
| Schlagworte: | |
| Online-Zugang: | Volltext bestellen |
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| Zusammenfassung: | The utility model discloses a three -phase electric heater protection device and system and air conditioner. Wherein, three -phase electric heater protection device three -phase electric heater, three phase power supply module, control module and three -phase AC contactor are supplied power for three -phase electric heater by the three phase power supply module, switch on or break off the circuit between three -phase electric heater and the three phase power supply module by the three -phase AC contactor, by control block detection three -phase electric heater's operating current, judgement three -phase electric heater's operating condition, and according to work the switching on or break off of current control three -phase AC contactor to through the operating current that detects three -phase electric heater, judge its operating condition, and then control three -phase electric heater full the utmost point switch on or break off, avoided potential safety hazards such as electrical apparatus conflagration th |
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