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Operating the double-busbar system
14.5 Opening or closing the high-voltage door
The procedure for opening and/or closing the high-voltage door at the circuit-breaker panel for double-busbar
system is identical with the procedure for opening and/or closing the high-voltage door at the circuit-breaker
panel version for single-busbar system.
For opening and/or closing the high-voltage door at the circuit-breaker panel for double-
busbar system, see chapter 10.4 and/or 10.5.
14.6 Positions of the withdrawable circuit-breaker
The positions of the circuit-breaker in the circuit-breaker panel for double-busbar system are identical with
the positions of the circuit-breaker in the circuit-breaker panel version for single-busbar system.
For the circuit-breaker positions in the circuit-breaker panel for double-busbar system, see
chapter 10.6.
14.7 Racking the withdrawable circuit-breaker
The procedure for racking the withdrawable circuit-breaker to service position and/or test position in the
circuit-breaker panel for double-busbar system is identical with the procedure for racking the withdrawable
circuit-breaker to service position and/or test position in the circuit-breaker panel version for single-busbar
system.
For racking the withdrawable circuit-breaker to service position and/or test position in the
circuit-breaker panel for double-busbar system, see chapter 10.7 and/or 10.8.
14.8 Closing or opening the circuit-breaker
The procedure for closing and/or opening the circuit-breaker in the circuit-breaker panel for double-busbar
system is identical with the procedure for closing and/or opening the circuit-breaker in the circuit-breaker
panel version for single-busbar system.
For electrical closing and/or opening of the circuit-breaker in the circuit-breaker panel for
double-busbar system, see chapter 10.9
For manual closing and/or opening of the circuit-breaker in the circuit-breaker panel for
double-busbar system, see chapter 10.11
14.9 Discharging or charging the closing spring
The procedure for discharging and/or charging the closing spring in the circuit-breaker panel for double-
busbar system is identical with the procedure for discharging and/or charging the closing spring in the circuit-
breaker panel version for single-busbar system.
For discharging and/or charging the closing spring in the circuit-breaker panel for double-
busbar system, see chapter 10.13
102
HINT
In the panel version for double-busbar system, the withdrawable parts in the
panels A and B are generally interlocked electromagnetically against the position
of the feeder earthing switch in panel A.
Observe the release of the actuating opening for racking the withdrawable
parts.
and/or
10.10.
and/or
10.12.
and/or
10.14.
NXAIR M
139-2021.9 / 07
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