I was very pleased and surprised by the many comments and advice, many thanks.
I do have a Power Analyser and have collected 24 hours of data and will send to anyone interested. Below is a brief summary of PF with no correction and VTHD which according to EN 50160 is within limits.
From the...
A Client has had one of their Power Factor Correction Units 'burn out'. They now plan to replace it with added protection - smoke and arc detection as well as earth leakage and circuit breakers instead of fuses. They have a high non linear load, predominantly VSD's.
I noticed that with the PFC...