High voltage electromotor protection system
The invention discloses a high voltage electromotor protection system. The high voltage electromotor protection system adopts a magnetism balance principle to achieve differentiation protection, and is used as a main protection of an electromotor. The high voltage electromotor protection system is c...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention discloses a high voltage electromotor protection system. The high voltage electromotor protection system adopts a magnetism balance principle to achieve differentiation protection, and is used as a main protection of an electromotor. The high voltage electromotor protection system is characterized in that a differentiation protection module is installed on a neutral point of a high voltage electromotor D, an output end of the high voltage electromotor D is connected with an input end of a switch cabinet E, a standby protection current transformer 2LH is connected with one end of a differential current transformer 1LH, and the other end of the differential current transformer 1LH is connected with an power grid after passing through a circuit interrupter DL. According to the high voltage electromotor protection system, electromotor manufacturers only need to install magnetism balance current transformers which meet accuracy requirements, and do not need to match the high voltage electromotor with |
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