ABB RER615 - Page 466

Parameter Values (Range) Unit Step Default Description
Start value df/dt -0.200...-0.005 xFn /s 0.005 -0.010 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 0.800...1.200 xFn 0.001 0.998 Restore frequency
setting value
Restore delay time 80...200000 ms 10 300 Time delay to re-
store
Table 492: LSHDPFRQ Non group settings (Basic)
Parameter Values (Range) Unit Step Default Description
Operation
1=on
5=off
1=on Operation Off / On
Table 493: 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
4.5.2.8 Monitored data
LSHDPFRQ Monitored data
Table 494: 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
4.5.2.9 Technical data
Table 495: LSHDPFRQ Technical data
Characteristic
Value
Operation accuracy f< ±5 mHz
df/dt
±100 mHz/s (in range |df/dt| < 5 Hz/s)
± 2.0% of the set value (in range 5 Hz/s < |df/dt| < 15 Hz/s)
Start time f< <80 ms
Table continues on the next page
Protection functions 1MRS758755 C
466 REC615 & RER615
Technical Manual