| 摘要 |
<p>PURPOSE: To obtain a photoelectric current transformer in which a stress applied to a Faraday effect element is relaxed, in which the deviation of an optical axis is eliminated so as to perform a measurement with high accuracy and by which a gas insulated switchgear can be constituted so as to be small. CONSTITUTION: The circumference of Faraday effect elements 18a, 18b, 18c is covered with resins 20a, 20b, 20c whose elasticity is high. In addition, optical heads 21a, 21b, 21c are coupled directly to the Faraday effect elements 18a, 18b, 18c. The Faraday effect elements 18a, 18b, 18c, the optical heads 21a, 21b, 21c and a part of optical fibers 19a, 19b, 19c which are coupled directly to the optical heads are buried and installed in a resin 14 for an insulating spacer 15.</p> |
