| 摘要 |
<p>PURPOSE:To prevent an electric shock at the inspecting time such as a no-load notch test or the like and to improve the safety by providing an auxiliary contact which is interlocked with main and auxiliary circuit switches in a display lamp circuit and indicating the opening or closing state of the switches. CONSTITUTION:A display lamp circuit has a contact 30 of a current relay 18 which is opened while a main circuit current is detected and closed during the stop of an electric motor vehicle, connected in series with a parallel circuit of an auxiliary contact 31 which is interlocked with a main circuit switch 13 and an auxiliary contact 32 which is interlocked with an auxiliary circuit switch 25. Further, a parallel circuit of display lamps 33, 34 which are provided underneath the floor of the vehicle is connected in series with the parallel circuit of the auxiliary contacts 31, 32, and the current of the display lamp circuit is flowed through ground switch 35 to a track. In this manner, the opening or closing of the main and auxiliary switches are confirmed at the inspecting time of an equipment, thereby preventing a trouble such as an electric shock or the like.</p> |
