EE259
Member
- Location
- Antelope, Oregon
Looking for help/advice regarding harmonics. Consulting at new facility with number of pump VFDs. THD at PCC is 12%. At distribution panel feeding pumps THD is 55%.
everything I’ve read to date says harmonics are bad for electrical distribution system. EOR says 12% is OK because meets IEEE 519-2014. As I read 519 it is standard concerned with PCC and not internal system. EOR and VFD manufacturer say 55% is OK on panel.
Looking for resources that address internal system impacts and not at PCC.
Any references would be greatly appreciated.
everything I’ve read to date says harmonics are bad for electrical distribution system. EOR says 12% is OK because meets IEEE 519-2014. As I read 519 it is standard concerned with PCC and not internal system. EOR and VFD manufacturer say 55% is OK on panel.
Looking for resources that address internal system impacts and not at PCC.
Any references would be greatly appreciated.