ABB Relion REG670, Applications Manual

Page: 344 / 780

( ) 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