620 series IEC 61850 Engineering Guide ANSI - Arc protection - Motor protection - Transformer protection - 2 winding - Feeder protection - Voltage regulation - IEC 61850 Engineering Guide - RET620 Transformer Protection and Control - REM620 Motor Protection and Control - 620 series Relion Protection and Control - REF620 Feeder Protection and Control - 2.0 - ANSI
620_series_ANSI_iec61850eng_454732_ENc.pdf