Siemens NXPLUS C Installation And Operating Instructions Manual page 274

Service information
Checking the interlocking conditions
Switch positions of the three-
position disconnector
DISCONNE READY-TO-EARTH
CTING function
function
OPEN OPEN
OPEN OPEN
CLOSED ---
CLOSED ---
--- CLOSED
--- CLOSED
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Switch position of Interlocking condition
the circuit-breaker
• "Feeder" locking device cannot be operated.
• Cable compartment cover cannot be removed.
• "Three-position disconnector" switching operation can be selected; operating lever for
OPEN
the DISCONNECTING or READY-TO-EARTH operation can be inserted; three-position
disconnector can be operated.
• Circuit-breaker can be operated.
• "Feeder" locking device cannot be operated.
CLOSED
• Cable compartment cover cannot be removed.
• Operating lever for READY-TO-EARTH operation cannot be inserted.
OPEN
• Circuit-breaker can be operated.
• "Feeder" locking device cannot be operated.
• Cable compartment cover cannot be removed.
CLOSED
• "Three-position disconnector" switching operation cannot be selected.
• Circuit-breaker can be operated.
• "Three-position disconnector" switching operation cannot be selected.
• "Feeder" locking device can be operated.
CLOSED
• Cable compartment cover can be removed.
• Circuit-breaker can be operated.
• Operating lever for DISCONNECTING operation cannot be inserted.
• "Feeder" locking device cannot be operated.
OPEN
• Cable compartment cover cannot be removed.
• Circuit-breaker can be operated.
➭ Put the switchgear panel into operation according to the installation and operating
instructions.
✔ The maintenance of the operating mechanism is completed.
Revision 11 • INSTALLATION AND OPERATING INSTRUCTIONS • NXPLUS C • 802-9081.9