ABB Relion 670 series - Page 769

ABB Relion 670 series

1432 pages

To Next Page

To Next Page

To Previous Page

To Previous Page

Loading...

AND

AND

OR

OR

VL1FF

VL1OK

VB1FF

VB1OK

VB2FF

VB2OK

BUS1_CL

BUS1_OP

LINE1_CL

LINE1_OP

BLOCK

line1Voltage

L1SEL

AND

AND

VSELFAIL

VL2FF

VL2OK

OR

AND

AND

AND

AND

AND

B1SEL

bus1Voltage

AND

AND

AND

BUS2_CL

BUS2_OP

LINE2_CL

LINE2_OP

bus2Voltage

L2SEL

AND

AND

B2SEL

line2Voltage

OR

en05000781_2_ansi.vsd

OR

OR

NOT

NOT

busVoltage

invalidSelection

lineVoltage

selectedFuseOK

ANSI05000781 V2 EN-US

Figure 406: Simplified logic diagram for the voltage selection function for the tie circuit breaker in breaker-

and-a-half arrangement.

1MRK 502 066-UUS B Section 14

Control

763

Technical manual

Table of Contents