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 a DSP floating-point processing unit, providing faster computation 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 user-friendly 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 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; the wireless testing method is more convenient and flexible to operate, greatly reducing 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 measured values, it can also display 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 (low-voltage side of PT): AC  5 ~ 200V

Current signal: AC  0 ~ 20mA

4. Power Supply:

AC  220V±10%  50Hz