Pick-up
The PQS>/< setting parameter controls the pick-up of the power protection function. This defines the
maximum or minimum allowed measured three-phase power (active, reactive, or apparent) before
action from the function. The function constantly calculates the ratio between the PQS>/< and the
measured power magnitude. The reset ratios of 97 % (pick-up mode "Over") and 103 % (pick-up mode
"Under") are built into the function and is always relative to the pick-up value.
Table. 5.4.15 - 147. Pick-up settings.
Name
Description
Range
Step
Default
Measured
magnitude
Defines which three phase power is used: Active, reactive
or apparent power.
0: P3PH
1: Q3PH
2: S3PH
-
0: P3PH
Nominal
MVA
reference
Defines whether the used nominal power is set manually or
if transformer or generator status monitoring function
defines the nominal power automatically.
0: Set manually
1: Use Gen nom MVA
2: Use Trafo nom MVA
-
0: Set
manually
Set
nominal
MVA
Nominal MVA used by the function. This parameter is visible
only when "Nominal MVA reference" parameter is set to "Set
manually"
0.0001...1000.0000MVA 0.0001MVA 10MVA
Pick-up
mode
Defines whether the function operates in underpower or
overpower protection mode.
0: > Over
1: < Under
-
0: Over
Pick-up
Pick-up setting. Related to the nominal power set by the
user.
-500.000…500.000%
0.005%
0%
The pick-up activation of the function is not directly equal to the START signal generation of the
function. The START signal is allowed if the blocking condition is not active.
Read-only parameters
The relay's
Info page displays useful, real-time information on the state of the protection function. It is
accessed either through the relay's HMI display, or through the setting tool software when it is
connected to the relay and its Live Edit mode is active.
Table. 5.4.15 - 148. Information displayed by the function.
Name
Range
Step
Description
PQS>/< LN
behaviour
1: On
2: Blocked
3: Test
4: Test/Blocked
5: Off
-
Displays the mode of PWR block.
This parameter is visible only when
Allow setting of individual LN
mode is enabled in General menu.
PQS>/<
condition
0: Normal
1: Start
2: Trip
3: Blocked
-
Displays the status of the protection function.
PQS>/<
selected
measurement
0: POW1CT1
1: POW1CT2
2: POW2CT1
3: POW2CT2
4: Undefined
-
Displays the selected power measurement.
This indication is visible if the device has more than one current
measurement unit.
Nominal MVA
used
0.000...1800.000MVA
0.001MVA
Displays the nominal power used by the function. This parameter is
displayed if "Nominal MVA reference" parameter has been set to
"Use Gen nom MVA" or "Use Trafo nom MVA".
Pick-up
setting
-1800.000...1800.000MVA 0.001MVA Pick-up setting used at the moment by the function. Value of this
parameter can change if setting group has been changed.
Genera
Generattor Commander
or Commander
Instruction manual
Version: 2.07
168
© Arcteq Relays Ltd
IM00001
Содержание Generator Commander
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