... output power and light weight HZ-4000 High-power path instrument About our CompanyEstablished in March 2008, HuaZheng Electric ... class, comprehensive test class.Product IntroductionHZ-4000 High-power path instrument , is an important part of the cable fault ... ~35KV) , local cable, FM communication cable, coaxial cable, short circuit, earth, high resistance leakage, high resistance flashover fault of ...