ABB ret650, Руководство по применению

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( ) 100
s
IN I IBase
 
IECEQUATION17003 V1 EN-US
(Equation 30)
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 .
7.4 Directional residual overcurrent protection, four
steps EF4PTOC
IP14509-1 v8
7.4.1 Identification
M14881-1 v6
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-US
51N_67N
7.4.2 Application
M12509-12 v10
The directional residual overcurrent protection, four steps EF4PTOC is used in
several applications in the power system. Some applications are:
Section 7
1MRK 504 169-UEN A
Current protection
120 Transformer protection RET650 2.2 IEC
Application manual