Elimination of induced electricity
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This post was last edited by Yu Qin on 2020-11-1 at 12:08. Please provide guidance regarding the issue of induced electricity! After the initial factory construction was completed, some of the equipment generated high levels of induced voltage, with some reaching 120V, which caused the equipment to start operating on its own. Fortunately, no accidents occurred. The solution adopted later was to use capacitors to eliminate the induced voltage, but this did not address the root cause of the problem. Now, a new device is being installed, to be powered solely from a 10KV supply; shielded cables are used for the wiring, with the shielding layer grounded at one end – all necessary measures have been taken. Yet, induced electricity still exists, causing the indicator lights to glow brightly. How can the existence of induced electricity be eliminated at its root?
The fundamental problem with induced electricity is still improper grounding. Although you may have various grounding measures in place, have you ever measured the grounding resistance? It’s possible that the grounding electrodes do not meet the required standards at all.
Why didn’t you do grounding? Grounding can eliminate induced electricity
Perhaps this is the key point. Power transmission and distribution systems have numerous and detailed requirements regarding electrical grounding; electrical professionals should check whether these requirements have been met as per the design
To be more specific, what voltage level is it, and which cable does the induced voltage occur on?
It’s likely that the cable grounding isn’t proper, or the cable is too long. The cable grounding should be checked in detail, ensuring that the cable’s spare conductors as well as its armor and shielding layers are properly grounded