R Group - Related Protection Functions (12)

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These Logical Nodes are used in conjunction with the P Group to provide complete systems - in some cases they provide are effectively inputs to the P function (e.g. direction) whilst in other cases they use the outputs from the P function (e.g. RBRF)

	Logical Node	Application
1	RADR	Disturbance recorder channel analogue
2	RBDR	Disturbance recorder channel binary
3	RBRF	Breaker failure
4	RDIR	Directional element
5	RDRE	Disturbance recorder function
6	RDRS	Disturbance record handling
7	RFBC	Field breaker configuration.
8	RFLO	Fault locator
9	RMXU	Differential measurements
10	RPSB	Power swing detection/blocking
11	RREC	Autoreclosing
12	RSYN	Synchronism-check

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