信号电缆备用贯通芯线间增加整流元件的探讨

为确保信号电缆备用贯通芯线的良好,在应急处置中发挥作用,不仅要测试贯通芯线间的电阻值,还需在最远端方向电缆盒内人工断开芯线连接,定期测试备用贯通芯线线间综合绝缘电阻值。其测试工作劳动强度大、次生风险高,为提高安全检测效率,经模拟信号电缆备用贯通芯线4种绝缘不良的场景,使用实物测试方法,验证了在信号电缆贯通芯线最末端方向电缆盒贯通芯线连接处增加一个整流元件,可以完成对贯通芯线的三测试(芯线间电阻、芯线间综合绝缘电阻、芯线对地综合绝缘电阻测试),根据测试数据可以有效判断存在问题的芯线。

Discussion on Adding Rectifier Element Between Spare Through-core Wires of Signal Cable

In order to ensure the good performance of spare through-core wires of signal cable and play a role in emergency disposal,it is not only necessary to test the resistance value between through-core wires,but also to manually disconnect the core wires in the cable box in the farthest direction and regularly test the comprehensive insulation resistance value between spare through-core wires.The test work is of high labor intensity and secondary risk.In order to improve the efficiency of safety detection,through simulating four scenarios of poor insulation of spare through-core wires of signal cable,the physical testing method is used to verify that when a rectifier element is added at the connection of the cable box through-core wires in the end direction of the through-core wires of signal cable,three tests of the through-core wire can be completed(inter-core resistance,inter-core integrated insulation resistance,core-to-ground integrated insulation resistance).According to the test data,the core wire in question can be effectively judged.