8.13.1.4
Settings
Table 237:
AEGPVOC Group settings (basic)
Name
Values (Range)
Unit
Step
Default
Description
Operation
Off
On
-
-
Off
Operation Off / On
I>
5 - 900
%IB
1
120
Operate phase current level in % of IBase
tOC
0.000 - 60.000
s
0.001
0.030
Trip time delay for over current level
ArmU<
2 - 150
%UB
1
50
Under-voltage level to arm protection in %
of UBase
tArm
0.000 - 60.000
s
0.001
5.000
Time delay to arm protection with U< level
DisarmU>
2 - 200
%UB
1
80
Over-voltage level to disarm protection in
% of UBase
tDisarm
0.000 - 60.000
s
0.001
0.500
Time delay to disarm protection with U>
level
Table 238:
AEGPVOC Non group settings (basic)
Name
Values (Range)
Unit
Step
Default
Description
GlobalBaseSel
1 - 12
-
1
1
Selection of one of the Global Base Value
groups
8.13.1.5
Monitored data
Table 239:
AEGPVOC Monitored data
Name
Type
Values (Range)
Unit
Description
IMAX
REAL
-
A
Maximum value of
current
UMAX
REAL
-
kV
Maximum value of phase
to phase voltage
8.13.1.6
Operation principle
Accidental energizing protection for synchronous generator AEGPVOC function is
connected to three phase current input either from the generator terminal side or from
generator neutral point side and three phase voltage from the generator terminals. The
maximum of the three phase-to-phase voltages and maximum of the three phase
currents are measured.
When the maximum phase-to-phase voltage is less than the
ArmU<
for the period
tArm
, it is ensured that the generator is off-line. The ARMED signal will initiate the
overcurrent function. If the calculated maximum current of the three phases is larger
than
I>
for the period
tOC
then the TRIP signal becomes activated. Also START
signal becomes activated when overcurrent is detected.
Section 8
1MRK502052-UEN B
Current protection
444
Technical manual
Содержание Relion REG670
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