Siemens NXAIR M - Page 195

Fitting the earthing device
139-2021.9 / 07 NXAIR M 195
DANGER
Impermissibly high voltage and current
Inappropriate use of the earthing accessories will result in impermissibly high
voltage and current.
Use the earthing device exclusively for the maximum permissible short-
circuit current and the maximum permissible short-circuit duration.
Do not use the earthing device for short-circuit tests or purposes causing
similarly high voltages and currents.
Perform diligent inspection of the earthing accessories before each
application.
Preconditions
 Withdrawable part taken out of the panel
 Low-voltage connector stowed away
 Both shutter to the connection compartment and shutter to the busbar compartment closed
 Bushing contacts to be earthed isolated
 Earthing accessories available and in perfect condition
 Slip-on lever for opening the shutter available
 Padlock for shutter not to be used available
 Personal protective equipment put on
(1)
Upper shutter covering bushing
contacts linked with busbar
compartment
(2)
Lower shutter covering bushing
contacts linked with connection
compartment
Fig. 329: Panel prepared
Fig. 330: Fixed earthing point for connecting the
earthing clamp
1
2