The clamp meter generally has a current file, which can be used to measure the charging current of the capacitor.
Use a dry battery, connect the circuit and connect the battery, then the current display of the clamp meter should be a relatively large current, then the current drops rapidly, and finally becomes 0. This indicates that the capacitor is intact.
If the current maintains a constant value, the capacitor has broken down. But if there is no current, there are two situations, one is that the capacitance of the capacitor is too low (PF level), and the other is that the clamp meter has The current resolution is not enough. In this case, the quality of the capacitor cannot be judged by the current of the clamp meter.
If there is no current range, then for large capacitors, you can measure the change in charging current, and the clamp meter also needs to have a higher resolution. For small capacitors, the change in charging current is not enough to drive the clamp meter, and also cannot be measured.
