Siemens NXAIR - Position Indicators Visible on High-Voltage Door; Access to Compartments; Opening the High-Voltage Door

Operating the switch-disconnector panel
110-0134.9 / 14 NXAIR / ≤ 40 kA 217
18.2 Position indicators visible on high-voltage door
Feeder earthing switch:
CLOSED position or OPEN position
CLOSED
OPEN
Switch-fuse combination:
CLOSED position or OPEN position
CLOSED
OPEN
18.3 Access to compartments
Regarding accessibility to the individual compartments, NXAIR switchgear fulfills the loss of service
continuity category LSC 2B but “switch-disconnector panel with HV HRC fuses fulfills the loss of service
continuity category LSC 2A; Partition class PI (shutter made of insulating material) according to IEC 62271-
200”.
The degree of protection between the individual compartments is IP2X in standard design.
The type of accessibility is provided as follows:
Compartment:
Type of accessibility:
Busbar compartment
Tool-based
Switching-device /
connection
compartment
Access from the front side
Interlock-controlled
Access from the rear side
Tool-based
18.4 Opening the high-voltage door
DANGER
Electric shock
If the busbars and cable / bar connections in the switchgear have not been
isolated, the contacts in the panel will be live at operational high-voltage.
Before opening the high-voltage door:
Isolate the busbars in the busbar compartment and the cable / bar
connections in the switching-device / connection compartment.
Do not open the high-voltage door at the switch-disconnector panel
unless the panel has been earthed.
Observe the Five Safety Rules.
Verify safe isolation from supply.