This Tester is used to verify the electrical performance of Zinc Oxide Arrester. The instrument is suitable for various kinds of voltage levels zinc oxide arrester de-energized testing or energized testing thus define the risk and inner insulation moisture and valve aging defects. 1. 800 Ã?? 480 color LCD touch screen and high speed thermal printer. 2. Long distance wireless transmission. PT signal wireless transmission distance more than 400 m up to 2000 m; 3. Applicable for arrester de-energized test energized test and lab room test. 4. Three-phase current and three-phase voltage test simultaneously current and voltage sensor is isolated safe and reliable. 5. Two signal sampling methods support no voltage mode software calculation to get voltage reference 6. Built in high energy lithium battery And only weak current inside the instrument voltage is less than 12 volts. 7. Equipped with industrial grade operating system support direct shun-down mode 8. With 4G SD card can store massive testing data 9. With USB interface 10. Advanced data processing system support historical data management data analysis report automatic generation&printing 11. High sampling rate advanced digital signal processing technology high anti-interference performance and high precision. 12. With dust-proof waterproof anti-corrosion engineering seal box package small volume light weight and portable.