Operating The Three-Position Switch With Motor-Operating Mechanism; Protection Tripping Of The Switch-Fuse Combination - Siemens NXPLUS C Installation And Operating Instructions Manual

Remedy
802-9081.9 • INSTALLATION AND OPERATING INSTRUCTIONS • NXPLUS C • Revision 11
✔ The three-position switch is open.
➭ Remove the operating lever for the EARTHING/READY-TO-EARTH operation again.
✔ The interrogation lever and the control gate return to their initial position.
21.5

Operating the three-position switch with motor-operating mechanism

The switching operations DISCONNECTING, EARTHING and READY-TO-EARTH of the three-
position disconnector/switch-disconnector can be performed with a motor operating
mechanism (option).
Three-position switches with motor operating mechanisms can also be controlled from
remote according to their design.
21.6

Protection tripping of the switch-fuse combination

If the switch-fuse combination was tripped by a shunt release or a fuse-link:
• The position indicator of the three-position switch-disconnector shows a black-red bar.
• The operating shaft for the DISCONNECTING operation is still in CLOSED position.
• The motor operating mechanism is out of operation.
➭ Insert the operating lever for the DISCONNECTING operation (black ball handles) and switch
the three-position switch-disconnector to OPEN position (see page 215, "Circuit-breaker
panel: Disconnecting the feeder from the busbar").
Fig. 158: Switching the three-position switch-disconnector to OPEN position, example for
600 mm panel width
Operation
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