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Appendix - Siemens 38-3AH3 38 kV Instruction Manual

Vacuum circuit breaker
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62

Appendix

Table 8: Circuit breaker control data
Control voltages,
ANSI/IEEE C37.06
Nominal
Range
Close
48 Vdc
36 - 56
28 - 56
125 Vdc
100 - 140
70 - 140
250 Vdc
200 - 280
140 - 280
120 Vac
104 - 127
240 Vac
208 - 254
Footnotes:
1.
Current at nominal voltage
Capacitor trip
2.
Value preceding slash (/) is the current for
3.
the standard trip coil with standard rating
interrupting time. Value following (/) is
current for optional trip coil with three-cycle
interrupting time.
4.
---- means this selection is not available.
Table 9: Interrupting capacity auxiliary switch contacts
Type switch
Continuous
current
Non-inductive
A
Circuit breaker
10
TOC
15
MOC
20
Inductive
Circuit breaker
10
TOC
15
MOC
20
Footnotes:
Two contacts in series
1.
All switch contacts are non-convertible.
2.
Close
Trip
coil
coil
Trip
A
A
1
1
11.4
11.4/30
3
2.1
4.8/7.4
3
2.1
4.2/9.6
3
----
2.0
----
4
2, 4
----
4
2.0
----
2, 4
2
Control circuit voltage
120 Vac 240 Vac
10
5
15
10
15
10
6
3
15
10
15
10
Spring charging motor
Run
Inrush
Charging
(Average)
(Peak)
1
A
A
Seconds
8
25
10
4
18
10
2
10
10
6
----
10
4
3
----
4
10
48 Vdc 125 Vdc 250 Vdc
10/30
9.6
4.8
1
0.5
0.5
0.2
10
10
10
6
0.5
0.5
0.2
10
10
5
3
5

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