| 摘要 |
<p>PURPOSE:To prevent the accompanying noises and exhaust gas of an engine drive from being generated by supplying a power to a construction machine without driving the engine in a maintenance work. CONSTITUTION:On an overhead distribution line (low-voltage line) 12 wired to a pole 10, a connector 13 is provided to connect the low-voltage line 12 and the supply lines 17 of the hydraulic power source 16 for a crane 15 used for the maintenance work, thus supplying an electric power directly from the low-voltage line 12 to the hydraulic power source 16.</p> |
