Directional Residual Overcurrent Protection, Four Steps Ef4Ptoc; Identification; Setting Guidelines - ABB RES670 Applications Manual

Section 8
Current protection
8.2
8.2.1
8.2.2
134
D ³ + +
t 40 ms 100 ms
EQUATION1266 V1 EN-US
where it is considered that:
the operate time of overcurrent protection B1 is 40 ms
the breaker open time
the resetting time of protection A1
the additional margin
Directional residual overcurrent protection, four
steps EF4PTOC

Identification

Function description
Directional residual overcurrent
protection, four steps

Setting guidelines

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.
+ =
40 ms 40 ms 220 ms
is 100 ms
is 40 ms and
is 40 ms
IEC 61850
identification
EF4PTOC
1MRK 511 407-UEN C
IEC 60617 ANSI/IEEE C37.2
identification device number
51N_67N
4(IN>)
4
alt
4
TEF-REVA V2 EN-US
Phasor measurement unit RES670 2.2 IEC
Application manual
(Equation 37)
IP14509-1 v8
M14881-1 v6
IP14988-1 v1
M15282-3 v12