| 摘要 |
<p>PURPOSE:To obtain a detector which is easily fitted and low in manufacture cost by piercing three window holes at the top surface of a shield container and arranging plate type detection electrodes which are supported at every phase on rod type support members made of insulating materials in the container. CONSTITUTION:The three insulating support members 6 are fixed in the shield container C at positions corresponding to the window holes 5u-5w provided to the lid of the container. The flat plate type detection electrodes 7u-7w corresponding to respective power distribution lines Lu-Lw are fixed to the upper end parts of the members 6. Those electrodes 7u-7w are connected to lead wires R by connectors, etc., through branch lead wires Ru-Rw and led out to a signal processing circuit in a detector box K. In this constitution, a displacement current conducted from an electrostatic charging part through a space is utilized to simplify the structure of the detection part and also manufacture the detection electrodes for the three phases integrally, and further facilitates the opposite fitting operation of the detection part to the electrostatic charging part.</p> |
