1. The main engine cannot find the resonance point.
Cause: The resonance point of the system is outside the output frequency range of the main engine; System wiring error; System grounding is unreliable; High-voltage sampling feedback signal is open or the connection is unreliable; The sample is defective.
Exclusion method:
1. Check whether the grounding device is reliable and whether the grounding connecting wire has a disconnection point;
2. Check the on-off status of the high and low voltage coils of the excitation transformer;
3. Check the switch of each reactor;
4. Check the on-off of the voltage divider signal line;
5. Check the on-off condition of the high and low voltage capacitor arm of the voltage divider;
6. There is no resonance point when the device itself is boosted, so it is necessary to check the on-off of the compensation capacitor;
2. The host is reset.
Cause: the power supply of the main engine fluctuates; External strong magnetic field interference; The grounding of the main engine is unreliable;
3. The Q value is low, that is, the voltage does not rise, or the rise is not high.
Phenomenon:
1. The tuning curve is a curve with low peak value;
2. During the test, the primary voltage is higher, but the high voltage is lower. Even if the primary voltage does not rise to the test voltage, it has reached the rated voltage, and the circuit automatically depressurizes;
Reason:
1. The capacitors of the reactor and the sample do not match, and the resonance point is not found accurately;
2. The sample loss is high and the system Q value is too low;
3. The high voltage output voltage of the excitation transformer is low;
4. The high-voltage connecting wire is too long or the high-voltage discharge wire is not used.
Exclusion method:
1. Connect the compensation capacitor in parallel to the test loop to increase the loop capacitance;
2. Connect as many reactors in series as possible to improve the loop inductance;
3. Improve the output voltage of excitation transformer;
4. Dry the tested product, improve the insulation strength of the tested product and reduce the active loss of the circuit;
5. When general equipment outputs high voltage, high-voltage discharge wires are used, or ordinary high-voltage output wires are changed into shorter connecting wires, generally less than 5 meters.
4. Power trip.
Cause: The resonant system loop is short-circuited.