Operating the disconnecting panel
110-0134.9 / 14 NXAIR / ≤ 40 kA 99
11.3 Access to compartments
Regarding accessibility to the individual compartments, NXAIR switchgear fulfills the loss of service
continuity category LSC 2B according to IEC 62271-200.
The degree of protection between the individual compartments is IP2X.
The type of accessibility is provided as follows:
Switching-device compartment
Voltage transformer compartment
Access from the front side
Interlock-controlled and tool-based
Access from the rear side
11.4 Opening or closing the high-voltage door
The procedure for opening and/or closing the high-voltage door at the disconnecting panel is identical with
the procedure for opening and/or closing the high-voltage door at the circuit-breaker panel.
For opening and/or closing the high-voltage door at the disconnecting panel,
see chapter 10.4 and/or 10.5.
11.5 Racking the withdrawable disconnector link / disconnector truck
Injury due to effects of high-voltage
Racking the withdrawable disconnector link / disconnector truck while busbar
system and feeder are under operational high-voltage can cause serious damages
which may result in:
• Lightning
• Heat
• Loud noise
• Vibration
Never rack the withdrawable disconnector link / disconnector truck while
the busbar system and feeder are under operational high-voltage.
Get authorization from control station before racking the withdrawable
disconnector link / disconnector truck.
To release access for racking the withdrawable disconnector
link / disconnector truck, release the interlocking.
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