What causes RMS overcurrent in ABB Industrial Electrical?
- DDesiree YoungAug 26, 2025
If your ABB Industrial Electrical system detects an RMS overcurrent, it means the system has detected an excessive RMS current within the filter. To address this: * Verify that the filter CTs (Current Transformers) are correctly installed and not shorted. * Ensure that the unit current ratings and the programmed order during commissioning match the physical ratings and order. * Check the filter's cooling system and monitor the IGBT temperature using the PQF-Manager. * Try deactivating harmonic and reactive power requirements to see if the problem persists.







