Interlocks - Siemens NXPLUS C Installation And Operating Instructions Manual

Description
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8.11

Interlocks

• The three-position disconnector is equipped with a mechanical interlock. This interlock
prevents the circuit-breaker from being closed while the three-position disconnector is
being operated. Furthermore the mechanical interlock prevents the three-position
disconnector from being operated while the circuit-breaker is closed.
• The switching gate prevents switching straight from CLOSED to READY-TO-EARTH or from
READY-TO-EARTH to CLOSED, as the operating lever must be re-inserted in the OPEN
position.
• The control gate of the switching gate of the three-position switch can be padlocked in all
three switch positions.
Circuit-breaker panel/disconnector panel
Control gate lever in position:
Left
The three-position switch can be
operated
Ring-main panel
Control gate lever in position:
Up
The three-position switch can be
operated
Optional interlocks:
• Mechanical interlocking between feeder locking device and three-position disconnector
(circuit-breaker only lockable in earthed position)
• Mechanical interlocking between feeder locking device, three-position disconnector and
cable compartment cover (circuit-breaker only lockable in earthed position, cable
compartment cover only removable in earthed position)
• Mechanical interlocking between feeder locking device, three-position disconnector and
cable compartment cover (circuit-breaker only lockable in earthed position, cable
compartment cover only removable in earthed position) with key-operated interlock
• Mechanical interlocking between the three-position switch and the cable compartment
cover (cable compartment cover only removable in earthed position)
• Mechanical interlocking between the three-position switch and the cable compartment
cover (cable compartment cover only removable in earthed position) with key-operated
interlock
• Electromagnetic interlocking of the actuating openings for the three-position switch
• A closing lock-out (option) in the ring-main panel prevents the three-position switch-
disconnector from being switched to the CLOSED position if the cable compartment cover is
removed.
Revision 05 • INSTALLATION AND OPERATING INSTRUCTIONS • NXPLUS C Wind • 802-9074.9
Center
Switching operation not possible
Center
Switching operation not possible
Right
READY-TO-EARTH/EARTHING
possible
Down
READY-TO-EARTH/EARTHING
possible