Siemens NXAIR Operating Instructions Manual page 374

Fitting the earthing device
Opening the shutter
374
DANGER
Electric shock
If the busbars in the busbar compartment / cable or bar connections in the
connection compartment have not been isolated, the bushing contacts will be live
at operational high-voltage.
Always observe the Five Safety Rules.
Before opening a shutter:
Isolate the busbars / cable or bar connections.
Verify safe isolation from supply.
If one of the shutters is open, close it before opening the other.
Make sure that the mechanism of the shutter not to be opened is secured
with a padlock.
Contactor panels with panel width 435 mm only:
Make sure that the main shutter mechanism is secured with a padlock.
Open the shutter safely:
Open the shutter strictly as described in chapter 22 "Operating the
shutters" and observe all safety instructions therein.
While a shutter is open:
Do not reach into or enter the switching-device compartment.
Do not insert any objects in the switching-device compartment other than
the earthing rod.
Always close a shutter:
Before interrupting operations inside the switching-device compartment.
Immediately after completing operations inside the switching-device
compartment.
NXAIR / ≤ 40 kA
110-0134.9 / 14