| 摘要 |
An electromagnetic operation device for a vacuum circuit breaker, in which the speed of the contact-point-opening/closing actions of a vacuum switch tube used in a vacuum circuit breaker is controlled by electromagnetic operation, wherein the electromagnetic operation device is provided with a vacuum switch tube closing drive coil (31), and a first temperature sensor (201) for measuring the temperature surrounding the closing drive coil (31), the current flowing through the closing drive coil (31) being controlled on the basis of the temperature measured by the first temperature sensor (201). |
