Name
Range
Step
Default
Description
U3 mode U0
or SS
0: Not Used
1: U0
2: SS
-
0: Not
Used
The voltage channel U3 can be used to measure zero sequence
voltage (U0) or the Synchrocheck voltage (SS). If neither is needed,
the (default) option "Not Used" should be active. This setting is only
valid if the "2LL+U3+U4" mode is selected.
U0 (U3)
Measured
from
0: Broken Delta
1: Neutral point
2: Open delta
-
0: Broken
delta
Defines how the secondary voltage is scaled to the primary. Does not
affect how protection operates, it only affects the displayed primary
voltages. This parameter is visible when the "U3 mode U0 or SS" has
been set to the "U0" mode.
U4 mode U0
or SS
0: Not Used
1: U0
2: SS
-
0: Not
Used
The voltage channel U4 can be used to measure zero sequence
voltage (U0) or the Synchrocheck voltage (SS). If neither is needed,
the (default) option "Not Used" should be active.
U0 (U4)
Measured
from
0: Broken Delta
1: Neutral point
2: Open delta
-
0: Broken
delta
Defines how the secondary voltage is scaled to the primary. Does not
affect how protection operates, it only affects the displayed primary
voltages. This parameter is visible when the "U4 mode U0 or SS" has
been set to the "U0" mode.
Voltage
memory
0: Disabled
1: Activated
-
0:
Disabled
Activates the voltage memory. The "Voltage memory" chapter
describes the function in more detail.
P-E Voltage
measurements
0: No P-E
voltages
available
1: P-E Voltages
calculated
2: P-E Voltages
measured
-
-
Indicates whether or not phase-to-earth voltages are available. Also
indicates whether P-E voltages are measured from the voltage
channels directly or if they are calculated from measured line-to-line
and zero sequence voltages.
VT primary
1…1000000.0V 0.1V
20000.0V The rated primary voltage of the voltage transformer.
VT secondary
0.2…400.0V
0.1V
100.0V
The rated secondary voltage of the voltage transformer.
U3 Res/SS VT
primary
1…1000000V
0.1V
20000.0V The primary nominal voltage of the connected U0 or SS VT. This
setting is only valid if the "2LL+U3+U4" mode is selected.
U3 Res/SS VT
secondary
0.2…400V
0.1V
100.0V
The secondary nominal voltage of the connected U0 or SS VT. This
setting is only valid if the "2LL+U3+U4" mode is selected.
U4 Res/SS VT
primary
1…1000000V
0.1V
20000.0V The primary nominal voltage of the connected U0 or SS VT.
U4 Res/SS VT
secondary
0.2…400V
0.1V
100.0V
The secondary nominal voltage of the connected U0 or SS VT.
U1 Polarity
0: -
1: Invert
-
0: -
The selection of the first voltage measurement channel's (U1) polarity
(direction). The default setting is for the positive voltage to flow from
connector 1 to connector 2, with the secondary voltage's starpoint
pointing towards the line.
U2 Polarity
0: -
1: Invert
-
0: -
The selection of the second voltage measurement channel's (U2)
polarity (direction). The default setting is for the positive voltage to
flow from connector 1 to connector 2, with the secondary voltage's
starpoint pointing towards the line.
U3 Polarity
0: -
1: Invert
-
0: -
The selection of the third voltage measurement channel's (U3) polarity
(direction). The default setting is for the positive voltage to flow from
connector 1 to connector 2, with the secondary voltage's starpoint
pointing towards the line.
U4 Polarity
0: -
1: Invert
-
0: -
The selection of the fourth voltage measurement channel's (U4)
polarity (direction). The default setting is for the positive voltage to
flow from connector 1 to connector 2, with the secondary voltage's
starpoint pointing towards the line.
VT scaling
factor P/S
-
-
-
A relay feedback value; the calculated scaling factor that is the ratio
between the primary voltage and the secondary voltage.
VT scaling
factor p.u. Pri
-
-
-
A relay feedback value; the scaling factor for the primary voltage's
per-unit value.
VT scaling
factor p.u. Sec -
-
-
A relay feedback value; the scaling factor for the secondary voltage's
per-unit value.
Genera
Generattor Commander
or Commander
Instruction manual
Version: 2.07
© Arcteq Relays Ltd
IM00001
37
Summary of Contents for Generator Commander
Page 1: ...Generator Commander Instruction manual...
Page 2: ......