ABB Relion RES670, Applications Manual

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40 100 40 40 220 t ms ms ms ms ms
D ³ + + + =
EQUATION1266 V1 EN-US
(Equation 37)
where it is considered that:
the operate time of overcurrent protection B1 is 40 ms
the breaker open time
is 100 ms
the resetting time of protection A1 is 40 ms and
the additional margin is 40 ms
8.2 Directional residual overcurrent protection, four
steps EF4PTOC
IP14509-1 v8
8.2.1 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
8.2.2 Setting guidelines
IP14988-1 v1
M15282-3 v12
When inverse time overcurrent characteristic is selected, the
operate time of the stage will be the sum of the inverse time delay
and the set definite time delay. Thus, if only the inverse time delay
is required, it is important to set the definite time delay for that
stage to zero.
The parameters for the four step residual overcurrent protection are set via the local
HMI or PCM600. The following settings can be done for the function.
Common base IED values for the primary current ( IBase ), primary voltage ( UBase )
and primary power ( SBase ) are set in global base values for settings function
GBASVAL.
GlobalBaseSel : Selects the global base value group used by the function to define
IBase , UBase and SBase as applicable.
Section 8
1MRK 511 407-UEN C
Current protection
134 Phasor measurement unit RES670 2.2 IEC
Application manual