Table. 5.7 - 345. Other measurements
Name
Description
System f.
System frequency
Ref f1
Reference frequency 1
Ref f2
Reference frequency 2
M Thermal T
Motor thermal temperature
F Thermal T
Feeder thermal temperature
T Thermal T
Transformer thermal temperature
RTD meas 1…16
RTD measurement channels 1…16
Ext RTD meas 1…8
External RTD measurement channels 1…8 (ADAM)
mA input 7,8,15,16
mA input channels 7, 8, 15, 16
ASC 1…4
Analog scaled curves 1…4
Magnitude multiplier
Programmable stages can be set to follow one, two or three analog measurements with the
PSx >/<
Measurement setting parameter. The user must choose a measurement signal value to be compared
to the set value, and possibly also set a scaling for the signal. The image below is an example
of scaling: a primary neutral voltage has been scaled to a percentage value for easier handling when
setting up the comparator.
The scaling factor was calculated by taking the inverse value of a 20 kV system:
When this multiplier is in use, the full earth fault neutral voltage is 11 547 V primary which is
then multiplied with the above-calculated scaling factor, inversing the final result to 100%. This way a
pre-processed signal is easier to set, although it is also possible to just use the scaling factor of 1.0 and
set the desired pick-up limit as the primary voltage. Similarly, any chosen measurement value can be
scaled to the desired form.
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. 5.7 - 346. Information displayed by the function.
Name
Range
Description
PSx >/< LN behaviour
1: On
2: Blocked
3: Test
4: Test/Blocked
5: Off
Displays the mode of PGS block.
This parameter is visible only when
Allow setting of individual LN mode is
enabled in
General menu.
Condition
0: Normal
1: Start
2: Trip
3: Blocked
Displays status of the function.
Expected operating time -1800.000...1800.000s Displays the expected operating time when a fault occurs.
Genera
Generattor Commander
or Commander
Instruction manual
Version: 2.07
© Arcteq Relays Ltd
IM00001
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Содержание Generator Commander
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