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ABB REC650 Technical Manual page 230

Relion 650 series bay control

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Technical manual (700 pages)

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Section 10

Control

LN1QOPEN

LN1QCLD

B1QOPEN

B1QCLD

LN2QOPEN

LN2QCLD

B2QOPEN

B2QCLD

UB1OK

UB1FF

UB2OK

UB2FF

ULN1OK

ULN1FF

ULN2OK

ULN2FF

BLOCK

IEC05000781 V2 EN

Figure 101:

Simplified logic diagram for the voltage selection function for the tie circuit breaker in 1 1/2 breaker

arrangement.

224

AND

AND

AND

AND

AND

AND

OR

OR

OR

OR

1

AND

line1Voltage

bus1Voltage

1

AND

line2Voltage

bus2Voltage

AND

OR

AND

AND

AND

1MRK 511 287-UEN A

LN1SEL

B1SEL

busVoltage

LN2SEL

B2SEL

invalidSelection

OR

lineVoltage

selectedFuseOK

AND

USELFAIL

AND

en05000781-2.vsd

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