Rapid Tables now have a very useful calculator for calculating power factor and required capacitance and reactive power to correct. Power factor calculator (rapidtables.com)

Made by PQE where I served my apprenticeship a PFC company unfortunately gone. Maybe 15 years old

Here's the unit the controller is from 30+ years old

@wulin xu so no more direct on line capacitance? I have seen case where DOL's have been forgotten about and been adding significant costs and obviously poor power quality. All capacitance now should be intelligently controlled. Do you do much PFC and power quality work Xu?

What country is this in Wulin? Great pictures :)

Have you any case studies of this equipment implemented onsite you can share?

Hello David, We supply power factor correction equipment and services to facilities with moulding and manufacturing equipment installed. Plastic manufacture and particularly injection moulding processes induce a heavy inductive load on an electricity supply. Our products and services ensure the reactive power generated as a result is mitigated and not an addition to electricity costs and carbon emissions. The current reduction of the electrical system with a good power factor promotes conductor and component lifespan. We would need a site visit to establish if you have PFC equipment already connected to any electricity supplies onsite, its condition and output or to specify whether it would be cost effective to implement this equipment on your site. If the power factor shown on your electricity bill is below 0.95 our products and services will provide a cost effective solution to reducing energy costs and carbon emissions. To arrange a site visit contact enquiries@pqis.co.uk or call 01257 434218