ABB REL650 Technical Manual page 249

1MRK 506 382-UEN A
Line distance protection REL650 2.2 IEC
Technical manual
START
STL1
OR
BLOCK
IEC09000976 V2 EN-US
Figure 113: Simplified logic scheme of the CCRBRF starting logic
IP>
FunctionMode
1
Current and Contact
IL1
BFP Started L1
I>BlkCont
CBCLDL1
IEC09000977 V2 EN-US
Figure 114: Simplified logic scheme of the CCRBRF , CB position evaluation
t1
BFP Started L1
Retrip Time Out L1
t
RetripMode
30ms
1
CB Pos Check
CB Closed L1
CBFLT
IEC09000978 V4 EN-US
Figure 115: Simplified logic scheme of the retrip logic function
30 ms
AND
OR
Reset L1
a
a>b
b
Current
O R
Contact
OR
AND
a AND
a>b
OR
b
From other
AND
No CBPos Check
OR
OR
AND
Section 7
Current protection
BFP Started L1
150 ms
S SR
Q
t
R
Retrip Time Out L1 AND
BackupTrip L1
IEC09000976-2-en.vsd
AND
OR
Time out L1
AND
OR
AND
AND
Contact Closed L1
AND
TRRETL3
TRRETL2
phases
OR
tPulse
OR
Time out L1
Reset L1
Current High L1
CB Closed L1
IEC09000977-2-en.vsd
TRRET
TRRETL1
IEC09000978-4-en.vsd
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