1. When unpacking, the test personnel should check the equipment against the packing list. If any discrepancy is found, please contact our company immediately.
2. This test equipment should be used by professional high-voltage test personnel. Before use, carefully read the instruction manual and undergo repeated operation training.
3. The test personnel should be no less than 2 people. During use, strictly comply with your unit's safety operation regulations for high-voltage tests.
4. To ensure the safety and correctness of the test, besides being familiar with this product manual, you must strictly follow national standards and regulations for test operations.
5. All connection wires must not be connected incorrectly. Wiring must be done according to the circuit diagram in the "Precautions" section; otherwise, the test device may be damaged.
6. When this device is in use, it outputs high voltage or ultra-high voltage. It must be reliably grounded, and pay attention to operational safety.
7. Before testing the test object, perform a no-load voltage rise test on the equipment with a test voltage of 80% of the equipment's rated voltage.
8. Whether performing a test on the test object or a no-load voltage rise test, the lower section of the reactor must be insulated from the ground using an insulating support.
9. During the test, keep the distance between the variable frequency power supply and the reactor as large as possible (to avoid safety accidents).
10. The variable frequency power supply part of this set is in the form of a touch screen. When tapping, be gentle and slow (with a 0.5-second interval between entering the next menu). If you press too hard or too fast, you may not enter the next menu or the machine may not start. Press the reset button once, then return to the main menu, wait 5 seconds before starting again, or directly turn off the power and restart.
11. When setting parameters for the equipment, the "Device Voltage" field cannot be changed. "Device Voltage" is set in conjunction with the voltage divider during factory testing. If you change the "Device Voltage", the sampling signal of the voltage divider will change, and the measured voltage will not be the true test voltage; it may be higher or lower. This will affect the withstand voltage test of the test object. Therefore, test personnel should record the "Device Voltage" at startup so that it can be referenced if the device voltage is accidentally changed.
12. When testing test objects with relatively large capacitance or high losses, such as "generators, large-capacity motors, cables longer than 1.5km", the system Q value is low. Set the "Output Voltage" between 30V and 50V. In general, set the "Output Voltage" between 10V and 20V. When testing cables below 10kV and within 500m in length, choose a lower excitation voltage and set the "Output Voltage" to 10V. Otherwise, when searching for the resonance point, the test voltage may exceed the rated withstand voltage of the test object, and the system Q value is high at this time, which may easily cause breakdown of the test object.
13. Common fault causes and troubleshooting.
13.1 During the no-load voltage rise test, the resonance point was not found.
| Fault Cause | Troubleshooting Method |
| Variable frequency power supply not started | Disconnect the output of the variable frequency power supply, restart it, listen for any sound from the variable frequency power supply, check if there is air blowing from the ventilation port, and check if there is voltage at the output. |
| Capacitive voltage divider signal line open or short circuit | Use a multimeter to check the continuity of the voltage divider signal line. |
| Poor contact in the entire device wiring | Check if the entire device wiring is in good condition. |
| Ground wire not secure | Check if the grounding is good. |
| Excitation transformer open circuit | Use a multimeter to measure the resistance of the low-voltage winding and the high-voltage winding of the excitation transformer. |
| Reactor open circuit | Measure the DC resistance of the reactor.
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