By hvhipot 
When power workers use a series resonance test device to conduct resonance tests on high-voltage cables, they often encounter the question of whether to use manual or automatic tests. Many people are confused about whether to perform manual or automatic tests when conducting resonance tests. This article will briefly introduce it to everyone.
Firstly, whether it is a manual test or an automatic test, the equipment and circuit must be connected first, and then the test parameters must be set. This is the basis for successful testing, especially the parameter setting. The parameters should be set according to the voltage level of the test object. After the parameter setting is completed, you can choose whether to conduct a manual test or an automatic test.
After setting the parameters, click on “Auto Test”, and then click on “Start Test”. The system automatically searches for the resonance point. Once the resonance point is found, the system automatically boosts the voltage. The bottom right corner prompts “Boosting in Progress”. When the set withstand time is reached, the system automatically steps down the voltage. When the U resonance voltage drops to 0, the bottom right corner prompts “Test Completed”. Therefore, the automatic resonance test is equivalent to a foolproof operation and is very simple.
If the parameter settings are completed, click on “Manual Test” and then click “Start Test”. If you want to automatically find the resonance point, click “Tune” and the system will automatically find the resonance point. If you don’t want to automatically find the resonance point, first click “Raise Voltage” to raise the “U Low Voltage” to 50V, then click “Raise Frequency” to find the resonance point. After finding the resonance point, click “Raise Voltage”. When the U resonance voltage reaches the set withstand voltage value, click “Endurance Timer” to start the system timing. When the ‘withstand voltage time’ is reached, click ‘voltage reduction shutdown’, and the system will automatically reduce voltage. When the U resonance voltage drops to 0, the test is completed. It’s just a few more than automatic testing.
Overall, the difference between manual and automatic tests for series resonance is not significant. As long as the wiring is correct and the parameter settings are complete in the early stage, the difference between manual and automatic tests is not significant, and power workers can easily grasp it.