Siemens NXAIR Operating Instructions Manual page 338

Accessing the connection compartment through the front
Remove the connecting elements (3) at the 3 connecting leads from the cable / bar
connections to the insulating bushings for the removable voltage transformers, and store it:
•
3 nuts M8 with contact washers and plain washers (3)
Fig. 627: Bolted joints at the cable connections (central joint covered)
Loosen the 3 connecting leads (4) for the removable voltage transformers from the
cable / bar connections.
Remove the connecting elements from the left and right side of the bushing plate, and store
it:
•
8 bolts
acc. to ISO 7093 (5)
Loosen the fixing bolts at the lower side of the bushing plate:
•
3 bolts M8x20 with contact washers (6)
Fig. 628: 11 bolted joints on bushing plate
Remove the bushing plate with bushings, and store it.
✓
Access to the connection compartment through the panel front is given.
338
M8x20 with contact
NXAIR / ≤ 40 kA
washers and plain
5
6
washers size 8
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