The reactance of the shield in the zero sequence state is low, which is helpful for the application of new type automatic protecting equipment with short circuit, and the safe running of the cable and other relative equipment.

• 屏蔽层在零序工作状态下的电抗值低，有利于新型短路自动保护设备的应用，有利于电缆及其相关设备的安全运行。