Anti-burnt automatic protecting device of closing coil of breaker spring operation mechanism

• Main Authors: MA HONGBIN, WANG JIEXU, LONG TENGYUN, WANG JIANGFENG, LI YIHAO, DONG CHAOBIN, ZHANG HAIYAN
• Format: Patent
• Language: Chinese; English
• Published: 25.05.2011
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SWITCHES; ELECTRICITY; EMERGENCY PROTECTIVE DEVICES; RELAYS; SELECTORS

The utility model discloses an anti-burnt automatic protecting device of a closing coil of a breaker spring operation mechanism, which comprises an energy-storing loop and a control loop. The control loop is provided with a microcomputer protection device (4), a closing coil (1), a tripping coil (2) and a breaker auxiliary contact (3). The energy-storing loop is provided with an energy-storing motor (6), a position limit switch (5), an indicating lamp (8) and a direct current contactor (9), wherein the direct current contactor (9) is in series connection with the position limit switch (5) on the energy-storing loop; one contact of the direct current contactor (9) is in series connection with the closing coil (1) on the control loop; and other two contacts of the direct current contactor are respectively arranged at two ends of the energy-saving motor (6). The anti-burnt automatic protecting device can reduce power-off time, improve reliability of power supplying and use rate of the breaker and ensure safe, re