TLHG-801 Three-Phase Zinc Oxide Lightning Arrester Tester is simple to operate and convenient 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 power, and phase difference of zinc oxide lightning arresters. The large screen can display the real waveforms of voltage and current. The instrument uses digital waveform analysis technology, employing software anti-interference methods such as harmonic analysis and digital filtering to ensure accurate and stable measurement results. 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 side-phase arresters. The TLHG-801 Three-Phase Zinc Oxide Lightning Arrester Tester is equipped with a high-speed panel printer and rechargeable battery, making it very convenient for field use by test personnel. The TLHG-801 Three-Phase Zinc Oxide Lightning Arrester Tester uses a unique high-speed magnetic isolation digital sensor to directly collect input voltage and current signals, ensuring data reliability and safety. 



1. This instrument features a large-screen LCD display with full Chinese menu operation for easy use.

2. High-precision sampling and processing circuits, advanced Fourier harmonic analysis technology, ensure more reliable data.

3. The instrument uses a unique high-speed magnetic isolation digital sensor to directly collect input voltage and current signals, ensuring data reliability and safety.

4. This instrument can use the electric field induction method instead of PT secondary wiring.

5. Voltage-free mode: no need to take PT secondary voltage signal; software calculation is used to find the voltage reference.

6. This instrument can measure three phases simultaneously with automatic compensation, making it especially convenient.

7. It has functions such as resistive current fundamental peak output and side-phase correction.

8. The instrument is equipped with a rechargeable battery, calendar clock, and micro printer, and can store 120 sets of measurement data.

Product Parameters




1. Total current measurement range: 0—10mA RMS, 50Hz/60Hz Accuracy: ±(reading×5%+5µA)

2. Resistive current fundamental measurement accuracy (secondary method without inter-phase interference): ±(reading×5%+5µA)

3. Current harmonic accuracy: ±(reading×10%+10µA)

4. Reference voltage input range: 25V—250V RMS, total harmonic content <30% 50Hz/60Hz

5. Reference voltage measurement accuracy: ±(reading×5%+0.5V)

6. Voltage harmonic measurement accuracy: ±(reading×10%)

7. Fundamental current-voltage angle Φ: 0 o -360o

8. Electric field strength input range: 30KV/m—300KV/m, total harmonic content <30%

9. Electric field strength measurement accuracy: ±(reading×10%)

10. Electric field harmonic measurement accuracy: ±(reading×10%)

11. Battery working time: 6 hours for the main unit

12. Charging power supply: 220V±10% 50Hz/60Hz

Charging time: >5 hours

13. Working environment: Temperature: -10—50℃ Humidity: <90%