| 摘要 |
<p>PURPOSE:To suppress the output error of an optical current transformer accompanying the shift of the optical axis of an optical space transmission line by fixing an optical current transformer sensor detection part to the central part of a conical disc-shape insulating spacer and fixing a light emitting and detecting head to the wall surface of the hermetically closed container opposed to said head. CONSTITUTION:An optical current transformer glass sensor detection part 3 is fixed to the outer peripheral surface of the conductor connecting seat 24 fixed to one end surface of the conductor connection part 21 embedded in the through-hole 20a of the central part of a conical disc-shape insulating spacer 20 and a light emitting and detecting head 5 is fixed to the light emitting and detecting head cover 26 fixed to the opening part 1Bw formed to the wall surface of the container unit 1B opposed to said detection part 3. In this case, since a current supply contact element 25 flexibly comes into contact with a main circuit conductor 2B, the detection part 3 does not receive the effect of the mechanical vibration or stress generated in the conductor 2B. Since the spacer 20 is fixed to a hermetically closed container 1 by flanges 1Af, 1Bf, the optical space transmission shaft between the head 5 and the detection part 3 is strongly held and the output error of the detection part 3 accompa nying the shift of an optical axis can be suppressed. Further, since the special member supporting the detection part 3 is unnecessary, a structure is miniaturized and simplified.</p> |
