1. When discharging the large capacitance test object, after the test is completed and the test power is disconnected, it is necessary to wait for a period of time to make the charge on the test object self discharge to the ground through the voltage doubling cylinder and the test object itself. At this time, it can be observed that the voltage of the voltmeter on the control box is dropping gradually. When the voltmeter drops to a lower voltage, generally about 5Kv~15Kv, the discharge rod can be used to move gradually to the vicinity of the test object. First, discharge freely through the gap air, At this time, a hissing sound can be heard. When there is no sound, use the discharge rod to touch the test object. After Zui, the test object will be directly grounded and discharged
2. The accumulated charge of the large capacitance test object is proportional to the capacitance of the test object and the applied voltage and time
3. After the high-voltage cable test for more than several kilometers is completed, the discharge time is usually very long, and it needs to discharge repeatedly for many times. The resistance capacity should be large, and large capacity discharge rods should be ordered
4. It is forbidden to discharge the test object with a discharge rod without switching off the test power supply
5. It is strictly forbidden to press the discharge bar with feet or heavy objects, and it is strictly forbidden to bend or break the discharge bar
6. It is forbidden to damp the discharge rod, which will affect the insulation strength, and it should be placed in a dry place