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