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ABB REL650 - Page 357

ABB REL650
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AND
AND
OR
OR
ULN1FF
ULN1OK
UB1FF
UB1OK
UB2FF
UB2OK
B1QCLD
B1QOPEN
LN1QCLD
LN1QOPEN
BLOCK
line1Voltage
LN1SEL
AND
AND
USELFAIL
ULN2FF
ULN2OK
OR
AND
AND
AND
AND
AND
1
B1SEL
bus1Voltage
AND
AND
AND
B2QCLD
B2QOPEN
LN2QCLD
LN2QOPEN
bus2Voltage
LN2SEL
AND
AND
1
B2SEL
line2Voltage
OR
en05000781-2.vsd
OR
OR
busVoltage
invalidSelection
lineVoltage
selectedFuseOK
IEC05000781 V2 EN-US
Figure 174: Simplified logic diagram for the voltage selection function for the tie circuit breaker in 1 1/2
breaker arrangement.
1MRK 506 382-UEN A Section 11
Control
Line distance protection REL650 2.2 IEC 351
Technical manual

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