ABB Relion 670 series - Event Types and GSAL Mapping

GUID-6746298E-4C29-44C6-AB59-41EBF408A5E4 v4
Table 38. High speed line differential protection for 4 CT sets, 2-3 line ends L4CPDIF with 2 Mbit/s communication
Function Range or value Accuracy
Minimum operate current (20-200)% of IBase ±1.0% of I
r
at I ≤ I
r
±1.0% of I at I > I
r
SlopeSection2 (10.0-100.0)% -
SlopeSection3 (30.0-100.0)% -
EndSection1 (20–200)% of IBase -
EndSection2 (100–1000)% of IBase -
Unrestrained limit function (100–10000)% of IBase ±1.0% of I
r
at I ≤ I
r
±1.0% of I at I > I
r
Second harmonic blocking (5.0–100.0)% of
fundamental
±1.0% of I
r
Note: fundamental magnitude = 100% of I
r
Fifth harmonic blocking (5.0–100.0)% of
fundamental
±3.0% of I
r
Note: fundamental magnitude = 100% of I
r
Critical impulse time 2 ms typically at 0 to 10 x
I
dMin
-
Operate time with two input
groups' currents, restrained
function, in a 50 Hz system
1)
Min. = 10 ms
Max. = 20 ms
-
Operate time with two input
groups' currents, restrained
function, in a 60 Hz system
1)
Min. = 8 ms
Max. = 17 ms
-
Operate time, restrained function
at 0 to 10 x I
dMin
, in a 50 Hz system
2)
Min. = 10 ms
Max. = 20 ms
-
Operate time, restrained function
at 0 to 10 x I
dMin
, in a 60 Hz system
2)
Min. = 8 ms
Max. = 17 ms
-
Reset time, restrained function at
10 x I
dMin
to 0
2)
Min. = 45 ms
Max. = 65 ms
-
Operate time, unrestrained
function at 0 to 10 x I
dUnre
2)
Min. = 5 ms
Max. = 17 ms
-
Reset time, unrestrained function
at 10 x I
dUnre
to 0
2)
Min. = 45 ms
Max. = 65 ms
-
The data in the table are valid for single IED with 2 Mbit/s communication in loop-back mode.
The operate (trip) time is measured from general operate (trip) signal. In case of phase selective trip, the discrepancy between different
phases might be few milliseconds for a three-phase fault.
1) This data is obtained by applying two three-phase input groups' currents to simulate an internal fault with default settings. I
r
is applied to both input groups as pre- and
post-fault currents. The fault is performed by simultaneously increasing one group's currents to 10 x I
dMin
and decreasing the other group's currents to 0.
2) This data is obtained by applying one three-phase input group's currents only.
Line differential protection RED670
1MRK 505 379-BEN N
Version 2.2
82 Hitachi Power Grids
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