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Table 3: Typical vacuum interrupter contact life and stroke
Rated
Interrupting
maximum
class
voltage
kV
MVA or kA
4.76
250 MVA
4.76
350 MVA
8.25
500 MVA
15.0
500 MVA
15.0
750 MVA
15.0
1,000 MVA
4.76
31.5 kA
4.76
40 kA
4.76
50 kA
4.76
63 kA
8.25
40 kA
15.0
20 kA
15.0
25 kA
15.0
31.5 kA
15.0
40 kA
15.0
50 kA
15.0
63 kA
Up to 15.0
40 kA
Up to 15.0
50 kA
Up to 15.0
63 kA
Footnotes:
The vacuum interrupter type designation is labeled on the vacuum interrupter. If the vacuum interrupter installed does not match that indicated in this
1.
table, contact the nearest Siemens representative.
If you need assistance achieving the indicated stroke setting, contact the nearest Siemens representative.
2.
44
Non-generator circuit breakers (type GMSG)
Rated short-
Vacuum
circuit current
interrupter
kA
Type
29 kA@4.76 kV;
VS-15052
36 kA@3.85 kV
VS-17040
41 kA@4.76 kV;
VS-15052
49 kA@4.0 kV
33 kA@8.25 kV;
VS-15052
41 kA@6.6 kV
18 kA@15.0 kV;
VS-17006
23 kA@11.5 kV
28 kA@15.0 kV;
VS-15052
36 kA@11.5 kV
VS-17040
37 kA@15.0 kV;
VS-15052
48 kA@11.5 kV
VS-15052
31.5 kA@4.76 kV
VS-17040
VS-15052
40 kA@4.76 kV
VS-17040
50 kA@4.76 kV
VS-15052
63 kA@4.76 kV
VS-17085
VS-15052
40 kA@8.25 kV
VS-17040
20 kA@15.0 kV
VS-17006
25 kA@15.0 kV
VS-17006
VS-15052
31.5 kA@15.0 kV
VS-17040
VS-15052
40 kA@15.0 kV
VS-17040
50 kA@15.0 kV
VS-15052
63 kA@15.0 kV
VS-17085
Generator circuit breakers (type GMSG-GCB)
40 kA@15.0 kV
VS-15052
50 kA@15.0 kV
VS-17085
63 kA@15.0 kV
VS-17085
Continuous current
Stroke
A
mm
1,200, 2,000
8.5-9.5
1,200, 2,000
7-9
1,200, 2,000, 3,000
8.5-9.5
1,200, 2,000, 3,000
8.5-9.5
1,200, 2,000
7-9
1,200, 2,000, 3,000
8.5-9.5
1,200, 2,000
7-9
1,200, 2,000, 3,000
8.5-9.5
1,200, 2,000
8.5-9.5
1,200, 2,000
7-9
1,200, 2,000, 3,000
8.5-9.5
1,200, 2,000
7-9
1,200, 2,000, 3,000
8.5-9.5
1,200, 2,000, 3,000
10-11
1,200, 2,000, 3,000
8.5-9.5
1,200, 2,000
7-9
1,200, 2,000
7-9
1,200, 2,000
7-9
1,200, 2,000
8.5-9.5
1,200, 2,000
7-9
1,200, 2,000, 3,000
8.5-9.5
1,200, 2,000
7-9
1,200, 2,000, 3,000
8.5-9.5
1,200, 2,000, 3,000
10-11
1,200, 2,000, 3,000
8.5-9.5
1,200, 2,000, 3,000
10-11
1,200, 2,000, 3,000
10-11
Right hand
Graph
2
limit of curve
(refer to
Figure 37)
C
36
B
36
C
49
C
41
A
23
C
36
B
36
C
48
C
31.5
B
31.5
C
40
B
40
C
50
D
63
C
40
B
40
A
20
A
25
C
31.5
B
31.5
C
40
B
40
C
50
D
63
C
40
D
50
D
63
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