ABB / Broken conductor check (BRCPTOC) _ Setting & highlights _ AB2046

Overview

Conventional protection functions cannot detect the broken conductor condition. The “Broken conductor check (BRCPTOC)” function, consisting of continuous phase selective current unsymmetrical check on the line where the IED is connected, gives an alarm or trip at detecting broken conductors.

For more detailed information on “Broken conductor check (BRCPTOC)”, refer to ABB, Relion 670 Series manuals.

To see other supported functions, click here.

Function Identification

Function description	IEC 61850 identification	IEC 60617 identification	ANSI/IEEE C37.2 device number
Broken conductor check	BRCPTOC	–	46

Signals & Setting Parameters

BRCPTOC function block

BRCPTOC Input signals

BRCPTOC Input signals
Name	Type	Default	Description
I3P	GROUP SIGNAL	–	Group signal for current input
BLOCK	BOOLEAN	0	Block of function
BLKTR	BOOLEAN	0	Block of trip

BRCPTOC Output signals

BRCPTOC Output signals
Name	Type	Description
TRIP	BOOLEAN	Operate signal of the protection logic
START	BOOLEAN	Start signal of the protection logic

BRCPTOC Group settings (basic)

BRCPTOC Group settings (basic)
Name	Values (Range)	Unit	Step	Default	Description
Operation	Off On	–	–	Off	Operation Off / On
Iub>	50 – 90	%IM	1	50	Highest and lowest phase currents difference in % of highest phase current
IP>	5 – 100	%IB	1	20	Minimum phase current for operation of Iub> in % of IBase
tOper	0.000 – 60.000	s	0.001	5.000	Operate time delay

BRCPTOC Group settings (advanced)

BRCPTOC Group settings (advanced)
Name	Values (Range)	Unit	Step	Default	Description
tReset	0.010 – 60.000	s	0.001	0.100	Time delay in reset

BRCPTOC Non group settings (basic)

BRCPTOC Non group settings (basic)
Name	Values (Range)	Unit	Step	Default	Description
GlobalBaseSel	1 – 12	–	1	1	Selection of one of the Global Base Value groups

BRCPTOC Monitored data

BRCPTOC Monitored data
Name	Type	Values (Range)	Unit	Description
IUNBAL	REAL	–	–	Measured unbalance of phase currents