电缆割接是线路割接的一个组成部分，其割接方法有切断改接法（因弊端较多，所以采用的较少）和复接改线法两种。其中，复接改线法又包括原线复接改线法和副线复接改线法。原线复接法是将新旧线暂时复接，之后切断旧线，再分别接新、旧线。副线复接法是用一条副线临时起中介作 Cable cutover is an integral part of the line cutover, the cutover method cut off the connection method (due to more disadvantages, so less used) and complex rewire method two. Among them, the multiplex method to change the line method includes the original line multiplexed rewire method and vice line reconnection method. The original line multiplexing method is to temporarily multiplex the old and new lines, then cut off the old line, and then respectively new, old line. Vice line method is to use a secondary line temporary intermediary for