Siemens SION - Generator Circuit-Breaker Specs

Description
9229 0025 176 0E 35
2021-11-15
SION
®
vacuum circuit-breaker for generator switching applications
Fig. 42 Technical specifications, SION
®
generator circuit-breaker
Dimensions and weights
The dimensions of the vacuum circuit-breaker can be taken from the relevant dimen-
sional drawing. If needed, they can be obtained from your Siemens representative.
The weight is indicated on the vacuum circuit-breaker name plate (see Fig. 40), or
refer to the associated dimension drawing.
Rated voltage U
r
(at f
r
50/60 Hz)
kV 12
17.5
d)
Rated normal current I
r
A
1250 – 3150 / 4000
fc
c)
Rated lightning impulse withstand voltage (peak value) U
p
kV
75 (95
a)
)95
d)
Rated short-duration power frequency withstand voltage (RMS) U
d
kV
28 (42
a)
)38
d)
Rated short-circuit breaking current I
sc
kA 31.5
DC component of the rated short-circuit breaking current I
sc
kA 65
Rated short-circuit breaking current I
ma
kA 87
Pole-centre distance mm 210, 275
Distance between lower and upper terminal mm 275, 310
Standard rated operating sequence CO – 30 min – CO
Classification for circuit breakers G1 or G2 as per IEC/IEEE
62271-37-013:2015
G1 G2
Generator side rated short-circuit breaking current I
scg
kA 25 18.5
DC component of the rated short-circuit breaking current I
sc
%110 130
Asymmetrical breaking current kA 46 39
a) On request
c only with additional active cooling (fc)
d) Rated insulation level as per IEC 62271-100:2017