How to Check VSD Earth Leakage
Quick Answer
Use a clamp meter to measure earth leakage current and identify the source.
How to troubleshoot How to Check VSD Earth Leakage
Earth leakage in VSD systems can cause nuisance tripping. This guide covers checking VSD earth leakage.
Step-by-Step Fix
- Turn off the VSD and measure the earth leakage.
- Turn on the VSD and measure the earth leakage again.
- Compare the readings - a significant increase indicates VSD leakage.
- Check the motor and cable for leakage.
- Check the VSD input filters.
Common Error Codes
| Code | Meaning | Resolution |
|---|---|---|
| Leakage > 30mA | Excessive leakage | Check motor and cabling. |
| Leakage varies | Intermittent fault | Check for moisture or damaged insulation. |
Frequently Asked Questions
What is acceptable earth leakage for a VSD?
Typically less than 30mA.
Can VSDs cause earth leakage?
Yes, due to the high-frequency switching.