Siemens NXAIR Operating Instructions Manual page 135

Preparing the operating shaft for the feeder earthing switch
Make sure that the coupling pin of the operating shaft for the feeder earthing switch at the
contactor truck and the coupling in the switching-device compartment are in vertical position.
Fig. 235: Coupling pin of the operating shaft at the
If required, put the coupling pin of the feeder earthing switch operating shaft in vertical
position. To do so, reinsert the contactor truck into the corresponding panel and operate the
feeder earthing switch accordingly.
Checking if mechanical closing latch is needed
Depending on the number of fuse-links and their rated currents it may be necessary that a contactor truck is
equipped with a mechanical closing latch. Contactor trucks with mechanical closing latch have no
corresponding label. Contactor trucks without mechanical closing latch are labelled accordingly on the front
side:
Fig. 237: Instruction label on the front side of the contactor truck
First, check if the panel requires a contactor truck with/without mechanical closing latch to be
inserted. Second, check the front side of the contactor truck for the corresponding instruction
label.
110-0134.9 / 14
Operating the contactor panel with panel width 435 mm
contactor truck
NXAIR / ≤ 40 kA
Fig. 236: Coupling in the
switching-device
compartment
135