Operation
174/214 Revision 06 • INSTALLATION AND OPERATING INSTRUCTIONS • 8DB10 • 864-5091.9
Fig. 203: Bus sectionalizer (system 2 described, system 1 applies accordingly)
Switching operation Switching operation is only possible if Type
Q2 CLOSED/OPEN Q02 OPEN, Q25 OPEN mechanical
Q20 CLOSED/OPEN Q02 OPEN, Q205 OPEN electromechanically / mechanically
Q25 CLOSED/OPEN Q02 OPEN, Q2 OPEN mechanical
Q205 CLOSED/OPEN Q02 OPEN, Q20 OPEN electromechanically / mechanically
Q02 CLOSED (mechanically)
Q02 CLOSED (electrically) Q2, Q20, Q25, as well as Q205 not in
intermediate position
electrical
Q02 OPEN (electrically) - being released by a bus coupler lock-in - it is not
interlocked by a locking device when the busbar
system is earthed
electrically / mechanically
Q02 OPEN (mechanically) it is not interlocked by a locking device when the
busbar system is earthed
mechanical
Additionally, electromechanical interlocks may be fitted for disconnectors and earthing switches or for earthing switches.
Fig. 204: Top-mounted bus sectionalizer (system 2 described, system 1 applies accordingly)
Switching operation Switching operation is only possible if Type
Q21 CLOSED/OPEN Q215 OPEN mechanical
Q22 CLOSED/OPEN Q225 OPEN mechanical
Q215 CLOSED/OPEN Q21 OPEN mechanical
Q225 CLOSED/OPEN Q22 OPEN mechanical
Additionally, electromechanical interlocks may be fitted for disconnectors and earthing switches or for earthing switches.
Fig. 205: Disconnectable busbar connection
Switching operation Switching operation is only possible if Type
Q61 or Q62 CLOSED/OPEN permitted by internal or external switchgear
interlocks, Q81 or Q82 OPEN
electromechanical / mechanical
Q81 or Q82 CLOSED/OPEN permitted by internal or external switchgear
interlocks, Q61 or Q62 OPEN
electromechanical / mechanical
Additionally, electromechanical interlocks may be fitted for disconnectors and earthing switches or for earthing switches.
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