8.1.8.3
Functionality
The frequency measurement range is 35...75 Hz. The measured frequencies outside the
measurement range are considered to be out of range and the minimum and maximum
values are then shown in parentheses.
When
Frequency adaptivity
is enabled, the measurement range is extended to 10...75 Hz
in a 50 Hz network and 12...90 Hz in a 60 Hz network. The measured frequencies outside
35...75 Hz are shown in parentheses.
When the frequencies cannot be measured, for example, due to too low voltage amplitude,
the default value for frequency measurement can be selected with the
Def frequency Sel
setting parameter. In the “Nominal” mode the frequency is set to 50 Hz (or 60 Hz) and in
“Zero” mode the frequency is set to zero and shown in parentheses.
8.1.8.4
Signals
Table 822:
f Input signals
Name
Type
Default
Description
F
SIGNAL
-
Measured system frequency
8.1.8.5
Settings
Table 823:
f Non group settings (Basic)
Parameter
Values (Range)
Unit
Step
Default
Description
Operation
1=enable
5=disable
1=enable
Operation Disable / Enable
F Hi high limit
35.00...75.00
Hz
1
60.00
High alarm frequency limit
F high limit
35.00...75.00
Hz
1
55.00
High warning frequency limit
F low limit
35.00...75.00
Hz
1
45.00
Low warning frequency limit
F Lo low limit
35.00...75.00
Hz
1
40.00
Low alarm frequency limit
F deadband
100...100000
1
1000
Deadband configuration value for integral
calculation. (percentage of difference between
min and max as 0,001 % s)
Table 824:
f Non group settings (Advanced)
Parameter
Values (Range)
Unit
Step
Default
Description
Def frequency Sel
1=Nominal
2=Zero
1=Nominal
Default frequency selection
1MAC059074-MB A
Section 8
Measurement functions
615 series ANSI
919
Technical Manual
Содержание Relion 615 series
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