Monitored Data - ABB RELION Series Technical Manual

Section 4
Protection functions
Parameter
Start value df/dt
Operate Tm Freq
Operate Tm df/dt
Restore start Val
Restore delay time
Table 473: LSHDPFRQ Non group settings (Basic)
Parameter
Operation
Table 474: LSHDPFRQ Non group settings (Advanced)
Parameter
Reset delay time
4.5.2.8
4.5.2.9
452
Values (Range) Unit
-0.200...-0.005 xFn /s
80...200000 ms
120...200000 ms
0.800...1.200 xFn
80...200000 ms
Values (Range) Unit
1=on
5=off
Values (Range) Unit
0...60000 ms

Monitored data

Table 475: LSHDPFRQ Monitored data
Name
START_DUR
LSHDPFRQ
Technical data
Table 476: LSHDPFRQ Technical data
Characteristic
Operation accuracy
Start time
Reset time
Operate time accuracy
Step Default
0.005 -0.010
10 200
10 200
0.001 0.998
10 300
Step Default
1=on
Step Default
1 50
Type Values (Range)
FLOAT32 0.00...100.00
Enum 1=on
2=blocked
3=test
4=test/blocked
5=off
Value
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)
f< <80 ms
df/dt <120 ms
<150 ms
±1.0% of the set value or ±30 ms
1MRS758755 A
Description
Setting of frequency gradient for df/dt
detection
Time delay to operate for under frequency
stage
Time delay to operate for df/dt stage
Restore frequency setting value
Time delay to restore
Description
Operation Off / On
Description
Time delay after which the definite timers
will reset
Unit Description
% Start duration
Status
REC615 and RER615
Technical Manual