A new classification for Power Quality requirements (@ POC)

In order to clearly identify responsibilities for voltage quality disturbances on the point of connection (POC), voltage and current requirements have to be available at the POC. So, the relationship between inrush currents, flicker severity levels and grid impedances in the low voltage grid should be explained.

Furthermore, maximum harmonic currents at the POC in low voltage grids are determined by using these grid impedances.

J Cobben explains how he and his team developed a very simple ABCDEF classification to help everybody by having a common tool with which to assess power quality requirements.