Table 180:
DNSPTOC (46) Non group settings (basic)
Name
Values (Range)
Unit
Step
Default
Description
GlobalBaseSel
1 - 6
-
1
1
Selection of one of the Global Base Value
groups
7.16.6
Monitored data
Table 181:
DNSPTOC (46) Monitored data
Name
Type
Values (Range)
Unit
Description
CURRENT
REAL
-
A
Measured current value
VOLTAGE
REAL
-
kV
Measured voltage value
UIANGLE
REAL
-
deg
Angle between voltage and
current
7.16.7
Operation principle
Negative sequence based overcurrent function (DNSPTOC, 46) has two settable current
levels, setting parameters
PickupCurr_OC1
and
PickupCurr_OC2
. Both features have
definite time characteristics with settings
tDef_OC1
and
tDef_OC2
respectively. It is
possible to change the direction of these steps to
forward
,
reverse
or
non-directional
by
setting parameters
DirMode_OC1
and
DirMode_OC2
. At too low polarizing voltage the
overcurrent feature can be either blocked or non-directional. This is controlled by settings
ActLowVolt1_VM
and
ActLowVolt2_VM
.
7.16.8
Technical data
Table 182:
DNSPTOC (46) Technical data
Function
Range or value
Accuracy
Operate current
(2.0 - 200.0) % of
IBase
± 1.0% of I
r
at I <I
n
± 1.0% of I at I > I
n
Reset ratio
> 95 %
-
Low polarizing voltage level
(0.0 - 5.0) % of
VBase
< ± 0.5% of V
n
Relay characteristic angle
(-180 - 180) degrees
± 2.0 degrees
Relay operate angle
(1 - 90) degrees
± 2.0 degrees
Timers
(0.00 - 6000.00) s
± 0.5% ± 25 ms
Operate time, non-directional
30 ms typically at 0 to 2 x I
set
20 ms typically at 0 to 10 x I
set
-
Reset time, non-directional
40 ms typically at 2 to 0 x I
set
-
Table continues on next page
1MRK 506 335-UUS A
Section 7
Current protection
291
Technical manual
Содержание REL650 series
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