| 摘要 |
<p>PROBLEM TO BE SOLVED: To facilitate the work such as the measurement of leakage current of the cable of each phase, the withstand voltage test, etc., in a multicircuit switch. SOLUTION: This device is provided with terminals 29u, 29v, and 29w for test of every phase. Separately, this is equipped with a short circuit board 33 where three pieces of connection holes 33u, 33v, and 33w to connect with the terminal for test of each phase are made at one end, and one piece of connection hole 33e to connect with an earth plate 34 is made at the other end. In case of measurement of each phase, this short circuit board 33 is removed, and it is performed separately for each terminal for test of each phase, and in the case of performing measurement of each phase en block, the short circuit board 33 is connected to each phase upside down to that in the figure, avoiding the connection hole 33e, and measurement is performed by applying voltage to the connection hole 33e.</p> |
