Protection loop of energy storing driving motor of high-voltage circuit breaker

• Main Authors: JIANG YUE, ZHU JIANMIN, SHI JUNWEI, PENG HONGFEN
• Format: Patent
• Language: English
• Published: 11.02.2015
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION

The utility model provides a protection loop of an energy storing driving motor of a high-voltage circuit breaker. The protection loop comprises an air switch KK, an energy storing spacing normally-closed contact C, an energy storing driving motor M, a background monitoring system and a time relay SJ1. The time relay SJ1 is provided with a time-delay turn-off normally-closed contact SJ1-1 and a normally opened contact SJ1-2. One end of the air switch KK is electrically connected with one end of the energy storing spacing normally-closed contact C. The other end of the energy storing spacing normally-closed contact C, the wire entering end of a coil of the time relay SJ1 and one end of the time-delay turn-off normally-closed contact SJ1-1 of the time relay SJ1 share one wire. The other end of the time-delay turn-off normally-closed contact SJ1-1 is electrically connected with one end of a coil of the energy storing driving motor M. The normally opened contact SJ1-2 is electrically connected with the background monitoring system signal. The protection loop is capable of effectively protecting the energy storing driving motor from damage, simple in structure, easy to achieve and low in cost.