Description
9229 9992 176 0D 35
2013-07-08
Per phase one vacuum circuit-breaker
Fig. 46 Technical data - connection of one vacuum circuit-breaker per phase
Dimensions and weights
The dimensions of the vacuum circuit-breaker can be taken from the relevant
dimension drawing. If required, these are available from your Siemens
representative.
The weight is given on the rating plate of the vacuum circuit-breaker (see Fig. 44) or
can be taken from the relevant dimension drawing.
Note
If one vacuum circuit-breaker is ordered per phase, the three vacuum circuit-
breakers are synchronised at the factory. If one of the vacuum circuit-breakers is
exchanged, the three vacuum circuit-breakers must be re-synchronised.
Rated voltage* U
r
kV 12** 17,5 24
Rated operating current I
r
A4000
4000, 5000,
6300, 8000,
10000, 12000
4000, 5000,
6300, 8000,
10000, 12000
Rated lightning impulse withstand voltage (peak value) U
p
kV 75 110 125
Rated power frequency withstand voltage (effective value) U
d
kV 28 50 50
Rated short-circuit breaking current I
sc
kA 90 50, 63, 72, 80 50, 63, 72
Distance between pole centres mm ** 275 300
Rated operating sequence A, B A, B A, B
A O - 3 min - CO - 3 min - CO; operating sequence with and without load
B CO - 30 min - CO; operating sequence in the event of short-circuit current
* In the event of a rated frequency f
r
of 50/60 Hz
** Vacuum circuit-breaker with one pole assembly
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