| 摘要 |
FIELD: electricity. ^ SUBSTANCE: device for setting spring of compressed-air circuit breaker contains driving plates, drive motor, and secondary gear. It is equipped with at least one or more microswitches and changeover lever to turn on/off the microswitches capable to compress the spring and warn about completion of spring compression when setting is over. ^ EFFECT: improvement of efficiency when user operates compressed-air circuit breaker. ^ 10 cl, 11 dwg |
