MOA-301 Arrester Leak Tester
• 8inch color LCD touch screen, high speed thermal printer.
•The measurement is completed by the intelligent control of the central processing unit.
•The device can measure both wired and wireless, and the wireless transmission distance can reach more than 1000 meters, which greatly facilitates various measurement operations on the site of large substations. It is easy to operate and easy to use.
•Using digital waveform analysis technology and software anti-interference methods such as harmonic analysis and digital filtering to make the measurement results more accurate and stable, accurately analyze the content of the fundamental wave and 3rd to 7th harmonics, overcome the influence of inter-phase interference, and correctly measure the resistive current of the arrester.
•It is convenient to timely find the dangerous defects such as moisture inside the zinc oxide arrester and valve plate aging.
• Wireless sampling, with long distance.
A. Wired: indoor use, or on-site where the PT sampling wiring cabinet is near with tested lightning arrester.
B. Wireless: outdoor use, or on-site where the PT sampling wiring cabinet is far from tested lightning arrester, wireless distance is up to 1000M.
• Three-phase can be measured at the same time. The resistive current of 3channels can be measured at the same time, meanwhile, there are two anti-interference modes: 1) no interference: the inter-phase angle cannot be calculated and corrected automatically under this mode; 2) With interference: the interphase interference angle can be calculated and corrected. Only one-time connection to finish measurement of ABC phase.
• Built-in high-capacity Li-battery, suitable for no power supply field.•
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Use condition |
-20℃- 50℃ | RH<80% |
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Charging power supply |
AC 220V±10% |
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Input range of PT reference voltage |
0-300V |
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Input resistance of voltage channel |
≥150kΩ (with fuse) |
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Measuring accuracy of PT reference voltage |
± (2% of the reading+0.5V) |
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Measuring range of current input |
0-10mA |
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Measurement accuracy of current fundamental |
± (2% of the reading+5μA) |
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Measurement accuracy of current harmonic |
± (5% of the reading+10μA) |
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Input resistance of current channel |
≤1Ω |
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Measurement range of electric field strength |
30kV/m ~ 300kV/m |
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Accuracy of electric field strength |
±10% of the reading |
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Action times of monitor |
0-99times |
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8/20μS impulse current |
≥50Ap |
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Calibration range of current meter |
0-10mA |
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Calibration accuracy of current meter |
± (2% of the reading+5μA) |
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Measurement resolution |
Voltage |
0.001V |
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Current |
0.001mA |
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Angle |
0.001° |
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Battery working time |
Main unit 8hours, voltage sampling box 12hours |
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Wireless transmission distance |
1000meters and above (empty and unobstructed) |
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Dimension of main unit |
320×270×140mm |
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RVI voltage test unit |
180×120×80mm |
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Weight of main unit |
4kg (without accessories) |
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