Directional Residual Overcurrent Protection, Four Steps Ef4Ptoc - ABB REL670 2.2 IEC Applications Manual

Section 9
Current protection
9.4
9.4.1
9.4.2
474
 
IN ( I IBase ) 100
s
IECEQUATION17003 V1 EN-US
Transformer inrush current shall be considered.
The setting of the protection is set as a percentage of the base current (IBase).
Operation: set the protection to On or Off.
IN>>: Set operate current in % of IB.
IN>>Max and IN>>Min should only be changed if remote setting of operation
current level, IN>>, is used. The limits are used for decreasing the used range of
the IN>> setting. If IN>> is set outside IN>>Max and IN>>Min, the closest of the
limits to IN>> is used by the function. If IN>>Max is smaller than IN>>Min, the
limits are swapped.
StValMult: The set operate current can be changed by activation of the binary input
ENMULT to the set factor StValMult.
Directional residual overcurrent protection, four
steps EF4PTOC
Identification
Function description
Directional residual overcurrent
protection, four steps
Application
The directional residual overcurrent protection, four steps EF4PTOC is used in
several applications in the power system. Some applications are:
IEC 61850 IEC 60617
identification identification
EF4PTOC
4(IN>)
4
alt
4
TEF-REVA V2 EN-US
Line distance protection REL670 2.2 IEC
1MRK 506 369-UEN B
(Equation 459)
IP14509-1 v8
M14881-1 v6
ANSI/IEEE C37.2
device number
51N_67N
M12509-12 v10
Application manual