ABB REC650 - Page 84

Frequency protection
Table 40. Under frequency protection SAPTUF (81)
Function Range or value Accuracy
Operate value, pickup function (35.00-75.00) Hz ± 2.0 mHz
Operate value, restore frequency (45 - 65) Hz ± 2.0 mHz
Reset ratio <1.001 -
Operate time, pickup function At 50 Hz: 200 ms typically at f
set
+0.5 Hz to
f
set
-0.5 Hz
At 60 Hz: 170 ms typically at f
set
+0.5 Hz to
f
set
-0.5 Hz
-
Reset time, pickup function At 50 Hz: 60 ms typically at f
set
-0.5 Hz to f
set
+0.5 Hz
At 60 Hz: 50 ms typically at f
set
-0.5 Hz to f
set
+0.5 Hz
-
Operate time delay (0.000-60.000)s <250 ms
Restore time delay (0.000-60.000)s <150 ms
Table 41. Overfrequency protection SAPTOF (81)
Function
Range or value Accuracy
Operate value, pickup function (35.00-75.00) Hz ± 2.0 mHz at
symmetrical three-
phase voltage
Reset ratio >0.999 -
Operate time, pickup function At 50 Hz: 200 ms typically at f
set
-0.5 Hz to
f
set
+0.5 Hz
At 60 Hz: 170 ms typically at f
set
-0.5 Hz to
f
set
+0.5 Hz
-
Reset time, pickup function At 50 and 60 Hz: 55 ms typically at f
set
+0.5
Hz to f
set
-0.5 Hz
-
Timer (0.000-60.000)s <250 ms
Table 42. Rate-of-change frequency protection SAPFRC (81)
Function
Range or value Accuracy
Operate value, pickup function (-10.00-10.00) Hz/s ± 10.0 mHz/s
Operate value, restore enable frequency (45.00 - 65.00) Hz ± 2.0 mHz
Timers (0.000 - 60.000) s <130 ms
Operate time, pickup function At 50 Hz: 100 ms typically
At 60 Hz: 80 ms typically
-
Bay control REC650 ANSI 1MRK 511 265-BUS B
Product version: 1.2
84 ABB