ABB Relion REL650 Series Product Manual page 73

Line distance protection REL650
Version 2.2
Table 53. Under frequency protection SAPTUF
Function
Operate value, start function
Operate value, restore frequency
Reset ratio
Operate time, start function
Reset time, start function
Operate time delay
Restore time delay
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Range or value
(35.00-75.00) Hz
(45 - 65) Hz
<1.001
At 50 Hz: 200 ms typically at f
set
f -0.5 Hz
set
At 60 Hz: 170 ms typically at f
set
f -0.5 Hz
set
At 50 Hz: 60 ms typically at f
set
+0.5 Hz
At 60 Hz: 50 ms typically at f
set
+0.5 Hz
(0.000-60.000)s
(0.000-60.000)s
1MRK 506 384-BEN H
Accuracy
±2.0 mHz
±2.0 mHz
-
+0.5 Hz to -
+0.5 Hz to
-0.5 Hz to f -
set
-0.5 Hz to f
set
<250 ms
<150 ms
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