... Test distance: 165Km 3.Fast and accuracy. HZ-4000 Cable Fault Tester HostAbout our CompanyEstablished in March 2008, HuaZheng ... & sale a serious of power system products, such as Cable fault tester, transformer test class, lightning arrester test class, ... detector can test all types power cable (voltage class 1KV~35KV) , local cable, FM communication cable, coaxial cable, short circuit, earth, high ...