Cable Sealing Ends - Siemens NXAIR Installation Instructions Manual

10.5 Cable sealing ends

To connect the high-voltage cables, customary indoor sealing ends for air-insulated medium-voltage
switchgear have to be used.
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NOTICE
Damage to the switchgear panels
The connection compartment can be destroyed by flashovers if cable sealing ends
with non-matching dimensions are used.
Use only sealing ends with the dimensions described hereafter.
Depending on the manufacturer of the cable sealing ends, the dimensions
may differ from those described in here. If the dimensions are different,
please do absolutely contact the regional Siemens representative before
installation.
NOTICE
Damage to the switchgear panels
When the cables are mounted, this can cause gaps and openings that do not meet
the degree of protection of the switchgear.
After assembling the cable sealing ends, verify the gap dimensions
according to the degree of protection.
If necessary, re-align the parts moved for mounting the cables, in order to
provide the gap dimensions according to the degree of protection.
Compensate gaps up to 2.5 mm with sealing compound SIKAFLEX 221-
GR 310 ML.
In case of gaps > 2.5 mm between the outside diameter of the cable and
the opening in the rubber sleeve of the floor cover: Fit new rubber sleeve.
NXAIR /
≤
40 kA
Electrical connections
153