| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a circuit breaker having optical CT, that can be applied easily to existing horizontal one-point-cut circuit breakers, will not give adverse effects on optical transmission characteristic of an optical cable, and does not cause the optical cable to disturb the maintenance of the circuit breaker. SOLUTION: A draw-out box 18 which protrudes on the side of the lower part of an optical-incorporating insulator 11 in the circuit breaker having an optical CT and a fixed box 21 arranged on the side of a stand 10 are connected with a flexible tube 22, and an optical cord 19 with a margin in length is passed through inside the tube. Both ends of the optical cord 19 are fixed connectors on both ends of the flexible tube 22, and the extra length of the cord is kept constant.</p> |
