ABB Relion 670 series - Setting parameters; Technical data; Rate-of-change frequency protection SAPFRC (81)

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