ABB Relion 670 Series Technical Reference Manual page 572

Section 9
Frequency protection
Name Values (Range)
RestoreFreq 45.00 - 65.00
tRestore 0.000 - 60.000
tReset 0.000 - 60.000
9.3.6
566
Unit Step
Hz 0.01
s 0.001
s 0.001
Technical data
Table 296: SAPFRC (81) Technical data
Function
Operate value, pickup function
Operate value, internal blocking
level
Operate time, pickup function
Default Description
49.90 Restore frequency if frequency is above
frequency value (Hz)
0.000 Restore time delay.
0.000 Time delay for reset.
Range or value
(-10.00-10.00) Hz/s
(0-100)% of VBase
100 ms typically
1MRK505222-UUS C
Accuracy
± 10.0 mHz/s
± 0.5% of V
n
-
Technical reference manual