Wireless Zinc Oxide Three Phase Surge Lightning Arrester Test Set
I.Description: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.II.PhotosIII.Function: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.3.9
Voltage collector integrated local display (128 × 64 dot matrix
OLED LCD screen) and phase sequence checking function can display
three-phase full voltage, voltage fundamental wave, three, five and
seven times harmonic RMS, system frequency values and three-phase
voltage phase difference. It is easy for field testers to quickly
check the connection between the voltage collector and PT secondary
voltage output terminal and the parameters of the three-phase
voltage.3.10 The voltage collector adopts double digital isolation
technology, which is more securer and reliable.3.11 AC and DC:
built-in lithium battery power supply or 220V AC charger power
supplyself-adaptively.3.12 With the built-in high-capacity
rechargeable lithium battery inside the host and the voltage
collector, the instrument can continuously work for 8 hours after a
complete charge.3.13 Intelligent battery management: the remaining
power display, low power alarm, long idle reminder and backlight
automatic regulation.3.14 Built-in real-time clock can display the
current time and date,and automatically record the test date and
time.3.15 The test data storage is divided into native storage and
U Disk storage. The native storage can store 100 test data, and
those date can be transferred into the U disk. U disk storage can
save the test data and waveform pictures, with the test data in TXT
format and the waveform picture in BMP format,which can be edited
and printed directly on the computer.3.16 The selected
externalthermalprinter can print test data and the saved test
record, and the printed content can be selected so as to save the
paper.IV.Parameters:4.1 Reference Voltage Measurement4.1.1
Reference voltage input range: 25V~250V
RMS,50Hz/60Hz4.1.2 accuracy of reference voltage measurement:
± (reading × 5% + 0.2V)4.1.3 accuracy of voltage harmonic
measurement: ± (reading × 10%) 4.1.4 reference
voltage channel input resistance: ≥1500kΩ 4.2 Current
Measurement 4.2.1Whole current measurement range: 0 ~ 20mA
RMS,50Hz/60Hz4.2.2 Accuracy: ± (reading × 5% +
5uA)4.2.3 fundamental wave measurement accuracy of resistive
current: ± (reading × 5% + 5uA) 4.2.4 Current harmonics
measurement accuracy: ± (reading × 10% + 10uA)4.2.5 Current
channel input resistance: ≤ 2Ω 4.3 Electric-field Intensity
Measurement4.3.1 input range of electric field strength:
30kV/m~300kV/m4.3.2 accuracy of electric field intensity
measurement:± (reading × 10%)4.3.3 accuracy of electric field
harmonic measurement: ± (reading × 10%)4.4 Service Conditions And
Shape4.4.1 power supply:built-in lithium battery or external
charger, charger input 100-240VAC 50Hz/60Hz,output
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