![background image](http://html1.mh-extra.com/html/abb/650-series/650-series_applications-manual_3345707317.webp)
3I
O
Three times zero-sequence current.Often referred to as the
residual or the earth-fault current
3U
O
Three times the zero sequence voltage. Often referred to
as the residual voltage or the neutral point voltage
1MRK 511 423-UEN A
Section 17
Glossary
Bay control REC650 2.2 IEC
311
Application manual