| 摘要 |
<p>The invention relates to a device for interrupting the power supply to an object, comprising means (1, 2, 11) to effect at what time the power supply is to be interrupted, means (13) for detecting whether the object's own power supply breakers are closed or not, breakers (11) for interrupting the power supply to the object, means (1, 11, 13, 23) for keeping the power supply to the object interrupted until the object's own breakers are open, and means (23) which, as the power supply to the object has been interrupted by the device, bring the means (13) for detecting whether the object's own breakers are closed or not to execute its detecting function with a step-wise longer period between the detecting function occasions.</p> |
