Document conventions - Arc protection - Auto synchronization - Bay control and measurement - Merging unit - Transformer protection - 2 winding - Feeder protection - Voltage regulation - Capacitor bank protection - Petersen Coil control - Grid automation - Busbar differential protection (high impedance) - Back-up protection - Motor protection - Busbar protection (voltage and frequency) - Transformer protection - 3 winding - Interconnection protection - Generator protection - Power management/Load shedding - Modbus Communication Manual - REX640 Protection and control - Relion Protection and Control - PCL4 - IEC - ANSI - 08.02.2023

A particular convention may not be used in this manual.

• Abbreviations and acronyms are spelled out in the glossary. The glossary also contains definitions of important terms.
• Menu paths are presented in bold.

  Select Main menu > Settings.

• Parameter names are shown in italics.

  The function can be enabled and disabled with the Operation setting

• Parameter values are indicated with quotation marks.

  The corresponding parameter values are "On" and "Off".

• Input/output messages and monitored data names are shown in Courier font.

  When the function starts, the START output is set to TRUE.

• Values of quantities are expressed with a number and an SI unit. The corresponding imperial units may be given in parentheses.
• This document assumes that the parameter setting visibility is "Advanced".