Table 290:
SAPTOF (81) Output signals
Name
Type
Description
TRIP
BOOLEAN
Operate/trip signal for frequency.
PICKUP
BOOLEAN
Start/pick-up signal for frequency.
BLKDMAGN
BOOLEAN
Blocking indication due to low magnitude.
FREQ
REAL
Measured frequency
9.2.5
Setting parameters
Table 291:
SAPTOF (81) Group settings (basic)
Name
Values (Range)
Unit
Step
Default
Description
Operation
Disabled
Enabled
-
-
Disabled
Disable/Enable Operation
VBase
0.05 - 2000.00
kV
0.05
400.00
Base voltage
PUFrequency
35.00 - 75.00
Hz
0.01
51.20
Frequency setting pickup value.
IntBlockLevel
0 - 100
%VB
1
50
Internal blocking level in % of VBase.
TimeDlyOperate
0.000 - 60.000
s
0.001
0.000
Operate time delay in over/under-frequency
mode.
TimeDlyReset
0.000 - 60.000
s
0.001
0.000
Time delay for reset.
9.2.6
Technical data
Table 292:
SAPTOF (81) technical data
Function
Range or value
Accuracy
Operate value, pickup function
(35.00-75.00) Hz
± 2.0 mHz at
symmetrical three-
phase voltage
Operate time, pickup function
100 ms typically at f
set
-0.5 Hz to f
set
+0.5 Hz
-
Reset time, pickup function
100 ms typically
-
Operate time, definite time
function
(0.000-60.000)s
± 0.5% ± 10 ms
Reset time, definite time function
(0.000-60.000)s
± 0.5% ± 10 ms
9.3
Rate-of-change frequency protection SAPFRC (81)
1MRK505222-UUS C
Section 9
Frequency protection
561
Technical reference manual
Summary of Contents for Relion 670 series
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