Technical Data - ABB RED650 Technical Manual

Section 10
Frequency protection
BLOCK
U < IntBlockLevel
Voltage
Frequency
f < StartFrequency
BLKTRIP
BLKREST
IEC16000041 V1 EN-US
Figure 128: Simplified logic diagram for SAPTUF
10.1.7
272
Definite timer
Voltage based timer
tRestore
f > RestoreFreq

Technical data

Table 140: SAPTUF technical data
Function
Operate value, start function, at symmetrical three
phase voltage
Operate time, start at f
set
Reset time, start at f - 0.02 Hz to f
set
Operate time, definite time function at f
to f - 0.02 Hz
set
Table continues on next page
OR
or
tReset
tDelay
AND
restore
AND
Range or value
+ 0.02 Hz to f - 0.02 Hz
set
+ 0.02 Hz
set
+ 0.02 Hz
set
1MRK 505 394-UEN A
block
Start
&
start
Trip
output
logic
trip
IEC16000041-1-en.vsdx
(35.00-75.00) Hz
Min. = 80 ms
fn = 50 Hz
Max. = 95 ms
Min. = 65 ms
fn = 60 Hz
Max. = 80 ms
Min. = 15 ms
Max. = 30 ms
(0.000-60.000)s
Line differential protection RED650 2.2 IEC
BLKDMAGN
START
TRIP
RESTORE
M13360-1 v15
Accuracy
±2.0 mHz
-
-
±0.2% or
±100 ms
whichever
is greater
Technical manual