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Appendix – Siemens vacuum circuit breaker 38-3AH3 38 kV User Manual

Page 62

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Control voltages,
ANSI/IEEE C37.06

Close

coil

Trip

coil

Spring charging motor

Nominal

Range

Run

(Average)

1

Inrush
(Peak)

Charging

Close

Trip

A

1

A

1

A

A

Seconds

48 Vdc

36 - 56

28 - 56

11.4

11.4/30

3

8

25

10

125 Vdc

100 - 140

70 - 140

2.1

4.8/7.4

3

4

18

10

250 Vdc

200 - 280

140 - 280

2.1

4.2/9.6

3

2

10

10

120 Vac

104 - 127

----

4

2.0

----

2, 4

6

----

4

10

240 Vac

208 - 254

----

4

2.0

----

2, 4

3

----

4

10

Appendix

Table 8: Circuit breaker control data

Footnotes:

1.

Current at nominal voltage

2.

Capacitor trip

3.

Value preceding slash (/) is the current for
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.

Footnotes:

1.

Two contacts in series

2.

All switch contacts are non-convertible.

Type switch

Continuous

current

Control circuit voltage

Non-inductive

A

120 Vac 240 Vac 48 Vdc 125 Vdc 250 Vdc

Circuit breaker

10

10

5

10/30

1

9.6

4.8

TOC

15

15

10

0.5

0.5

0.2

MOC

20

15

10

10

10

5

Inductive

Circuit breaker

10

6

3

10

6

3

TOC

15

15

10

0.5

0.5

0.2

MOC

20

15

10

10

10

5

Table 9: Interrupting capacity auxiliary switch contacts

2

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