The overvoltage protector tester is widely used for testing the power frequency discharge voltage of various electrical equipment, especially for testing the power frequency discharge voltage of zinc oxide overvoltage protectors (also known as lightning arresters or TBPs) with gaps, which has unique functions. A new type of special circuit is used to monitor the waveform of the test voltage, while collecting the discharge pulse signal of the current circuit, automatically determining the gap discharge, locking the effective voltage value at the moment of discharge, and quickly cutting off the test power supply to protect the test sample and equipment from overcurrent damage. Small size, light weight, shock and drop resistant, easy to operate, and convenient to carry.
Performance characteristics:
1. The instrument uses waveform detection and current detection to monitor the discharge current in real time. When the discharge current is detected, it is immediately recorded. At this moment, cut off the high-voltage power supply within 0.2 seconds. The instrument test results have high accuracy and stable testing.
2. The instrument adopts a large screen LCD display, which is easy to operate. The testing process is operated through Chinese character menu prompts, and operators do not need additional professional training to use it.
3. Integrated model with built-in high-voltage power supply for easy on-site testing and reducing on-site wiring.
4. High voltage protection: The test sample can cut off the output at high speed by short circuit, breakdown or high voltage current fluctuation.
5. High voltage cables are insulated wires that are resistant to high voltage. To ensure the accuracy of the data, please conduct a suspended experiment.
6. Anti misoperation: real-time monitoring of voltage and current; The high/low voltage of the wiring terminal is clearly defined; Slowly increase pressure, quickly decrease pressure, sound alarm.
7. Grounding protection: When the instrument is poorly grounded or not grounded, the instrument cannot function properly.
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Output voltage |
0-30KV (effective value) |
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output current |
0-25mA (effective value) |
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Detecting discharge mode |
Waveform detection and Fourier transform method |
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Voltage accuracy |
± (reading x 1%+0.1kV) |
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High voltage cut-off time |
Less than 0.2 seconds |
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resolution |
0.01KV |
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Input power supply |
AC220V ± 10%, 50Hz ± 1%, powered by mains or generator |
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environment |
Environmental temperature: -10 ℃~70 ℃ Relative humidity:<90% |
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External dimensions |
390mm×320mm×350mm |
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weight |
21kg |