213 NXAIR / ≤ 40 kA 110-0134.9 / 13
Operating the busbar current metering panel
17 Operating the busbar current metering panel
Read and understand these instructions before attempting operating works.
17.1 Panel front
No switching operations must be executed at the busbar current metering panel. For revision and
maintenance, the high-voltage door at the panel front can be opened. For opening and closing the
high-voltage door, do absolutely observe the following notes.
17.2 Opening the high-voltage door
Electric shock
If the busbars in the switchgear have not been isolated, the contacts in the panel
will be live at operational high-voltage.
Isolate the busbars in the switchgear.
Do not open the high-voltage door at the busbar current metering panel
unless the busbars have been isolated.
Observe the Five Safety Rules.
Verify safe isolation from supply.
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 busbar current metering panel.
Close the high-voltage door:
If an activity inside the compartment behind the high-voltage door is
interrupted.
Immediately after an activity inside the compartment behind the high-
voltage door was completed.
Before leaving the panel front.
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