Access To Compartments; Opening Or Closing The High-Voltage Door; Racking The Withdrawable Metering Part / Metering Truck; Removing Or Plugging On The Low-Voltage Connector - Siemens NXAIR Operating Instructions Manual

12.3 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:
Compartment:
Switching-device compartment
Busbar compartment
Connection
compartment

12.4 Opening or closing the high-voltage door

The procedure for opening and/or closing the high-voltage door at the metering 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 metering panel, see chapter 10.4
and/or 10.5.

12.5 Racking the withdrawable metering part / metering truck

The procedure for racking the withdrawable metering part / metering truck to service position and/or test
position is identical with the procedure for racking the withdrawable circuit-breaker / circuit-breaker truck to
service position and/or test position.
For racking the withdrawable metering part / metering truck to service position and/or test
position, see chapter 10.8 and/or 10.9.

12.6 Removing or plugging on the low-voltage connector

The procedure for removing and/or plugging on the low-voltage connector in the metering panel is identical
with the procedure for removing and/or plugging on the low-voltage connector in the circuit-breaker panel.
Control elements at the front side of the withdrawable metering part / metering truck
Access to the control elements at the front side of the withdrawable metering part / metering truck is given
after opening the high-voltage door.
Fig. 167: Control elements at the front of the withdrawable metering part / metering truck, example
110-0134.9 / 14
Access from the front side
Access from the rear side
(1) Miniature circuit-breakers
NXAIR / ≤ 40 kA
Operating the metering panel
Type of accessibility:
Interlock-controlled
Tool-based
Interlock-controlled and tool-based
Tool-based
1
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