Parameter
Values (Range)
Unit
Step
Default
Description
8=Freq< AND df/dt
Restore mode
1=Disabled
2=Auto
3=Manual
1=Disabled
Mode of operation
of restore function-
ality
Start value Freq
0.8000...1.2000
xFn
0.0001
0.9750
Frequency set-
ting/start value
Start value df/dt
-0.2000...-0.0050
xFn/s
0.0001
-0.0100
Setting of frequen-
cy gradient for
df/dt detection
Operate Tm Freq
80...200000
ms
10
200
Time delay to op-
erate for under fre-
quency stage
Operate Tm df/dt
120...200000
ms
10
200
Time delay to oper-
ate for df/dt stage
Restore start Val
0.8000...1.2000
xFn
0.0001
0.9980
Restore frequency
setting value
Restore delay time
80...200000
ms
10
300
Time delay to re-
store
Table 899: LSHDPFRQ Non group settings (Basic)
Parameter
Values (Range)
Unit
Step
Default
Description
Operation
1=on
5=off
1=on
Operation Off / On
Table 900: LSHDPFRQ Non group settings (Advanced)
Parameter
Values (Range)
Unit
Step
Default
Description
Reset delay time
0...60000
ms
1
50
Time delay after
which the definite
timers will reset
4.6.2.9
LSHDPFRQ Monitored data
Table 901: LSHDPFRQ Monitored data
Name
Type
Values (Range)
Unit
Description
START_DUR
FLOAT32
0.00...100.00
%
Start duration
LSHDPFRQ
Enum
1=on
2=blocked
3=test
4=test/blocked
5=off
Status
4.6.2.10
Technical data
Table 902: LSHDPFRQ Technical data
Characteristic
Value
Operation accuracy
f<
±5 mHz
df/dt
±100 mHz/s (in range |df/dt| < 5 Hz/s)
Table continues on the next page
1MRS759142 F
Protection functions
REX640
Technical Manual
939