Handheld Zinc Oxide Arrester Live Tester Introduction:



Used to detect the electrical performance of each phase of zinc oxide arresters (MOA). This instrument is suitable for on-site live testing of zinc oxide arresters at various voltage levels, as well as factory and acceptance tests in the laboratory under power-off conditions.



Handheld Zinc Oxide Arrester Live Tester Product Features:



Adopts a high-performance, low-power ARM processor with DSP floating-point processing unit, providing faster computing speed, higher precision, and larger data processing capacity; thus ensuring the accuracy and stability of test data calculations.



High-precision sampling filter circuit and digital filtering technology can filter out on-site interference signals.



Uses floating-point Fast Fourier Transform algorithm to achieve high-precision analysis of fundamental, harmonic voltage, and current signals.



Adopts an industrial-grade 5.7-inch 320×240 dot matrix monochrome LCD screen with clear display and friendly human-machine interface; for important operations and parameter settings, it displays prompt information and help instructions; the status bar at the top of the screen can display the working status of each peripheral and test status information.



Can measure the electrical parameters of three-phase zinc oxide arresters simultaneously, and can automatically compensate for inter-phase interference; it can also measure single-phase, supporting the PT secondary voltage with B-phase grounding as the reference voltage; when the measured phase differs from the reference voltage phase, the compensation angle can be automatically calculated.



Provides wired and wireless testing methods, with the wireless testing method being more convenient and flexible to operate; it can greatly reduce the work intensity of on-site testers.



Parameters and Range:



Test Voltage:  kV

Third Harmonic Voltage: kV

Total Current (Peak): 0~ 20 mA

Third Harmonic Current: 0~ 20 mA

Resistive Current (Peak): 0~ 20 mA

Resistive Current Peak: 0~ 20 mA

Capacitive Current (Peak): 0~ 20 mA

Arrester Power Consumption: 0~ 8W

In addition to displaying the above measurement values, it can also display the waveforms of voltage and total current.

2. Measurement Error:

Test Voltage: ±5%

Total Current: ±2%

Resistive Current: ±5%

Capacitive Current: ±5%

Arrester Power Consumption:  ±5%

3. Input Signals:

Voltage Signal (PT low-voltage side): AC  5 ~ 200V

Current Signal: AC  0 ~ 20mA

4. Power Supply:

AC  220V±10%  50Hz