The handheld zinc oxide arrester live-line tester is a special instrument used to detect the electrical performance of zinc oxide arresters. It is suitable for live-line or outage detection of zinc oxide arresters of various voltage levels, thereby timely discovering dangerous defects such as internal insulation moisture and valve plate aging.

The instrument is simple to operate and easy to use. The entire measurement process is controlled by a microcontroller. It can measure the total current, resistive current and its harmonics, power frequency reference voltage and its harmonics, active powerand phase difference. The large screen can display the real waveforms of voltage and current. The instrument uses digital waveform analysis technology, automatic frequency conversion technology, harmonic analysis, digital filtering and other software anti-interference methods to make the measurement results accurate and stable.It can accurately analyze the content of the fundamental wave and the 3rd to 7th harmonics, and can overcome the influence of inter-phase interference to correctly measure the resistive current of the side-phase arrester. This instrument is equipped with a rechargeable battery, making it very convenient for testers to use on site. The instrument uses a unique high-speed magnetic isolation digital sensor to directly collect input voltage and current signals, ensuring the reliability and safety of the data.
  • Instrument Features


1. This instrument adopts a large-screen LCD display with full Chinese menu operation, making it easy to use.

2. The instrument can measure the full current, resistive current and its harmonics, power frequency reference voltage and its harmonics, active power and phase difference of zinc oxide arresters. The large screen can display the real waveforms of voltage and current. The instrument uses digital waveform analysis technology, automatic frequency conversion technology, harmonic analysis and digital filtering and other software anti-interference methods to make the measurement results accurate and stable. It can accurately analyze the content of the fundamental wave and 3rd to 7th harmonics, and can overcome the influence of inter-phase interference to correctly measure the resistive current of the side-phase arrester. This instrument is equipped with a rechargeable battery, making it very convenient for testers to use on site. The instrument uses a unique high-speed magnetic isolation digital sensor to directly collect input voltage and current signals, ensuring the reliability and safety of the data.