2
2.Overview
Zinc Oxide Arrester Comprehensive Tester is used to check the electrical performances of the zinc
oxide arrester (MOA).The instrument is suitable for on-site inspection of zinc oxide arrester at all
voltage levels, as well as the factory test and acceptance test in the library when power is failed.By
measuring the full current and resistive current and other parameters,it can be found that it is possible
to detect the dangerous defects such as the internal insulation of the zinc oxide arrester and the aging
of the valve.
3.Functions And Fearutres
3.1 Being miniaturized and hand-held, small in size and light in weight, the instrument is easy to carry
and operate.
3.2 Using a high-performance and low-power ARM processor with DSP floating-point processing units,
the computing speed is faster, the operation accuracy is higher, and the processing data is larger.
Thus, the accuracy and stability of the test data can be ensured.
3.3 High precision sampling filter circuit and digital filter technology can filter out the scene interference
signal.
3.4 The floating-point fast Fourier algorithm is adopted to realize high precision analysis of the
fundamental wave, harmonic voltage and current signal.
3.5 Using the industrial grade 5.6 inch 640 × 480 dot matrix high-brightness color LCD screen, it
displays clearly and provides friendly man-machine interface; For some important operation and
parameter settings, it displays the tips and help instructions; the top of the screen status bar can
display each peripheral working status and test status information.
3.6 The electrical parameters of the three phase zinc oxide arrester can be measured at the same time,
and the interphase interference can be compensated automatically. It can also be measured in
single phase to support the PT secondary voltage of phase B as the reference voltage. The
compensation angle can be automatically calculated when the measured phase and the reference
voltage phase are different.
3.7 Provide both wired and wireless test methods, and wireless test mode operation is more simple
and flexible which can greatly reduce the work intensity of the field test personnel.
3.8 The unique sensor board replaces the PT secondary voltage measurement technology, making the
measurement safer and faster.
