| 摘要 |
<p>PURPOSE:To remove effect of turbulence to a optical transmission path, by providing a light information transmission path inside an insulation spacers to make it possible to isolate the inside of a gas insulated switch gear from a gas space atmosphere. CONSTITUTION:A phototransformer 2 is arranged on a conductor 4 at a charging section near an insulating spacer 10 portion of a photo transformer for instrument of gas insulated switch gear GIS and light information is generated by a voltage applied to the conductor 4, an electric field or a magnetic field generated by a current. This transformer 2, the conductor 4 and the spacer 10 are arranged in an exterior tank 5, which is filled with an SF insulation gas 7. A spacer hollow section 11 with a spatial transmission type optical transmission path 6 piercing the spacer 10 is provided and after the transmission path 6 is set, the hollow section 11 is filled with an FS insulating gas isolated from an insulating gas 7. A light transmitting/receiving section 14 is connected to the transmission path 6 within the spacer 10 through a light transmission piercing section 3 of a tank 5 to remove the effect of turbulence on the transmission path 6.</p> |
