Siemens 8DB10 Installation And Operating Instructions Manual page 174

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