ABB Relion 650 Series Technical Manual page 264

Section 8
Frequency protection
ANSI09000034 V1 EN-US
Figure 131: Simplified logic diagram for SAPTUF (81)
8.1.8 Technical data
Table 192: SAPTUF (81) Technical data
Function
Operate value, pickup function
Operate value, restore frequency
Operate time, pickup function
Reset time, pickup function
Operate time delay
Restore time delay
8.2 Overfrequency protection SAPTOF (81)
258
BLOCK
freqNotValid
Frequency Comparator
f < PUFrequency
Comparator
f > RestoreFreq
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BLOCK
OR
PICKUP
DefiniteTimeDelay
TimeDlyOperate
TRIP
TimeDlyRestore
Range or value
(35.00-75.00) Hz
(45 - 65) Hz
At 50 Hz: 200 ms typically at f
to f -0.5 Hz
set
At 60 Hz: 170 ms typically at f
f -0.5 Hz
set
At 50 Hz: 60 ms typically at f
f +0.5 Hz
set
At 60 Hz: 50 ms typically at f
f +0.5 Hz
set
(0.000-60.000)s
(0.000-60.000)s
1MRK 506 326-UUS B
BLKDMAGN
Pickup
PICKUP
&
Trip
Output
Logic
TRIP
100 ms
RESTORE
ANSI09000034-1-en.vsd
Accuracy
± 2.0 mHz
± 2.0 mHz
+0.5 Hz -
set
+0.5 Hz to
set
-0.5 Hz to -
set
-0.5 Hz to
set
<250 ms
<150 ms
Line distance protection REL650
Technical manual
M13360-1 v7
IP15747-1 v3