Replacing Hv Hrc Fuse-Links - Siemens NXAIR Operating Instructions Manual

18.11 Replacing HV HRC fuse-links

Instruction label on high-voltage door:
In addition to these instructions, an instruction label on the high-voltage door informs about proper operation
of the feeder earthing switch.
Fig. 417: Instruction label on high-voltage door
110-0134.9 / 14
WARNING
Electric shock
To perform any kind of activities inside or near the switching-device / connection
compartment of a switch-disconnector panel, you must ensure that the shutter
mechanism of the busbar compartment is closed.
Do not open the high-voltage door with the shutter mechanism of the
busbar compartment open.
CAUTION
Burns
After tripping, the surfaces of HV HRC fuse-links are hot. Touching hot HV HRC
fuse-links may cause burns.
Put on personal protective equipment.
Let hot HV HRC fuse-links cool down before replacing.
NOTICE
Undetected damage
Even if the switch-fuse combination shows no visible damages of a fault, the
HV HRC fuse-link may have tripped due to a fault.
Check the switching-device/connection compartment for deformations
when a fuse-link has tripped.
NXAIR / ≤ 40 kA
Operating the switch-disconnector panel
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