Technical Data - ABB REG650 Technical Manual

Section 10
Frequency protection
10.2.8
10.3
298
BLOCK
freqNotValid
Frequency Comparator
f > PUFrequency
ANSI09000033 V1 EN
Figure 138: Schematic design of overfrequency protection SAPTOF (81)

Technical data

Table 176: SAPTOF (81) technical data
Function
Operate value, pickup function
Reset ratio
Operate time, pickup function
Reset time, pickup function
Timer
Rate-of-change frequency protection SAPFRC (81)
OR
Definite Time Delay
TimeDlyOperate
Range or value
(35.00-75.00) Hz
>0.999
At 50 Hz: 200 ms typically at f
f +0.5 Hz
set
At 60 Hz: 170 ms typically at f
f +0.5 Hz
set
At 50 and 60 Hz: 55 ms typically at f
Hz to f -0.5 Hz
set
(0.000-60.000)s
1MRK 502 043-UUS B
BLOCK
BLKDMAGN
Pickup
&
Trip
Output
Logic
PICKUP PICKUP
TRIP
ANSI09000033-1-en.vsd
Accuracy
± 2.0 mHz at
symmetrical three-
phase voltage
-
-0.5 Hz to -
set
-0.5 Hz to
set
+0.5 -
set
<250 ms
Technical Manual
TRIP