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5

Electronic circuit breaker EBU

1638

4

Electronic circuit breaker EBU

Adjustment of electronic time-current characteristics (example)

uninterruptible

power supply / UPS

Selection of trip characteristic and current rating:

Characteristic curve C ⇒ inrush current SMPS

Current rating:

⇒ 10 A cable protection

for cable cross

section 1.5mm²

EBU10-TA1-003-AC230V-C-10A

adjustment to 12 A

⇒rated current UPS = 12 A

adjustment to 3 A

⇒rated current load = 3 A

Step 3:

adjustment of EBU

to load

Step 2:

adjustment of EBU to

UPS rating

UPS

current rating =12 A

Step 1:

selection of EBU

Setting options:

single phase rated current of the UPS unit at cont. load

rated current of the connected load

Recommendation:

smaller or equal to the determined value

higher or equal to the determined value

Setting parameters:

B6

B10

B16

C4

C6

C10

C16

7

OFF

11

OFF

17

OFF

4.3

OFF

7

OFF

11

OFF

17

OFF

7.5

2

12

3

19

4

5.5

1.3

8

2

12

3

21

4

8

2.5

13

3.5

21

5

6.5

1.6

9

2.5

14

3.5

25

5

8.5

3

14

4

23

6

7

2.0

11

3

16

4

28

6

9

3.5

15

5

25

7

8.5

2.3

12

3.5

21

5

34

7

9.5

4

16

6

28

8

10

2.6

14

4

25

6

38

8

10

4.5

17

7

29

10

11

3.0

16

4.5

28

7

43

10

11

5

19

8

31

12

13

3.3

18

5

34

8

57

12

12

5.5

21

9

34

14

14.5

3.6

21

5.5

38

9

64

14

13

6

22

10

35

16

17

4.0

25

6

43

10

68

16

In the OFF condition the electronic trip curve only takes effect in the short circuit range