ABB REG670 - Directional Residual Overcurrent Protection, Four Steps EF4 PTOC

( ) 100
s
IN I IBase 
IECEQUATION17003 V1 EN (Equation 191)
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.
9.4 Directional residual overcurrent protection, four steps
EF4PTOC
9.4.1 Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Directional residual overcurrent
protection, four steps
EF4PTOC
4(IN>)
4
alt
4
TEF-REVA V2 EN
51N_67N
9.4.2 Application
The directional residual overcurrent protection, four steps EF4PTOC is used in
several applications in the power system. Some applications are:
Section 9 1MRK 502 071-UEN -
Current protection
338 Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062
Application manual