Siemens NXAIR Operating Instructions Manual page 218

Operating the switch-disconnector panel
Preconditions
•
Switch-fuse combination in OPEN position
•
High-voltage door closed
•
Padlock (optional) removed from door handle
Procedure
To open the high-voltage door insert the double-bit key, push and turn clockwise as far as it
will go (that is 90°).
Fig. 381: Inserting the double-bit key
Pull door handle upwards and open the high-voltage door.
218
WARNING
Reduced safety
The closed high-voltage door is an important safety element of the switchgear.
The high-voltage door is exclusively opened for performing operational activities
inside the switching-device/connection compartment, such as replacing the HV
HRC fuses.
Close the high-voltage door:
If an activity inside the switching-device/connection compartment is
interrupted.
Immediately after an activity inside the switching-device/connection
compartment was completed.
Before leaving the panel front.
NXAIR / ≤ 40 kA
Fig. 382: Turning the double-bit key
clockwise
110-0134.9 / 14