| 摘要 |
<p>PURPOSE: To reduce the number of components of the driving mechanism of two sets of ground switches and to decrease the cost by driving to switch the switches by an operating main shaft formed integrally coaxially with the drive shaft of the switches. CONSTITUTION: When a breaker 5 is inspected, the disconnecting switch 8 in a bus vessel 4 of the breaker 5 to the disconnecting switch 8 are turned OFF, then two sets of ground switches 6, 7 are closed, and the breaker 5 is grounded. The switches 6, 7 are disposed in parallel with the polarity pole of the breaker 5, and the drive shafts 42, 44 of the switches 6, 7 are coaxial, and hence a drive shaft 38 can be integrally formed. Thus, the number of the components of the driving mechanisms of the switches 6, 7 can be reduced to decrease the cost. The operation of an operating unit 12 is easily transmitted to the mechanisms of the switches 6, 7 by the reduction in the components to smoothly operate the ground switches.</p> |
