Functional constraints - Arc protection - Bay control and measurement - Merging unit - Transformer protection - 2 winding - Feeder protection - Voltage regulation - Capacitor bank protection - Grid automation - Busbar differential protection (high impedance) - Line differential protection - Back-up protection - Motor protection - Busbar protection (voltage and frequency) - Interconnection protection - Generator protection - Power management/Load shedding - IEC 61850 Engineering Guide - REX615 Protection and control - Relion Protection and Control - PCL2 - IEC - ANSI

REX615 IEC 61850 Engineering Guide

From the IEC 61850 point of view, functional constraints should match between the ABB model and the FPN model. It is possible to map data between known predefined functional constraints. For example, different devices may have different requirements of setting group handling. When the FPN model is used for monitoring, a warning message can be ignored.

Table 1. Examples of functional constraint rules
FPN model	ABB model	Description
SP	SG	See Setting group parameters.
SG	SP	See Setting group parameters.
SV	ST, MX ,DC	REX615 does not support substitution. It is, however, possible to have substation data in the FPN data model and map it to the relay's application data.
BL	ST	Not supported by REX615 directly, but it is possible to map to generic data.
OR	ST	Not supported by REX615 directly, but it is possible to map to generic data.
SR	ST, DC	Not supported by REX615 directly, but it is possible to map to generic data.