ABB Relion 650 Series Technical Manual page 237

1MRK 506 326-UUS B
6.16.7 Operation principle
Negative sequence based overcurrent function (DNSPTOC, 46) has two settable current levels,
setting parameters
characteristics with settings
direction of these steps to
DirMode_OC1 and DirMode_OC2 . At too low polarizing voltage the overcurrent feature can be
either blocked, non-directional or use the voltage memory. This is controlled by settings
ActLowVolt1_VM and ActLowVolt2_VM .
6.16.8 Technical data
Table 163: DNSPTOC (46) Technical data
Function
Operate current
Reset ratio
Low voltage level for memory
Relay characteristic angle
Relay operate angle
Timers
Operate time, non-directional
Reset time, non-directional
Operate time, directional
Reset time, directional
Critical impulse time
Impulse margin time
Dynamic overreach
Line distance protection REL650
Technical manual
PickupCurr_OC1 and PickupCurr_OC2 . Both features have definite time
tDef_OC1 and tDef_OC2 respectively. It is possible to change the
forward , reverse or non-directional by setting parameters
Range or value
(2.0 - 5000.0) % of
> 95 %
(0.0 - 5.0) % of
(-180 - 180) degrees
(1 - 90) degrees
(0.00 - 6000.00) s
30 ms typically at 0 to 2 x I
20 ms typically at 0 to 10 x I
40 ms typically at 2 to 0 x I
30 ms typically at 0 to 2 x I
20 ms typically at 0 to 10 x I
40 ms typically at 2 to 0 x I
10 ms typically at 0 to 2 x I
2 ms typically at 0 to 10 x I
15 ms typically
< 10% at t = 300 ms
© Copyright 2011 ABB Power Grids. All rights reserved
Accuracy
IBase
± 1.0% of I
± 1.0% of I at I > I
-
VBase
< ± 0.5% of V
± 2.0 degrees
± 2.0 degrees
± 0.5% ± 25 ms
-
set
set
-
set
-
set
set
-
set
-
set
set
-
-
Section 6
Current protection
GUID-919EE194-D9D0-4388-A4A2-1449F86B4F2E v2
GUID-D69015D7-192B-45DE-A67A-96F582CF09C0 v3
at I <I
r n
n
n
231