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8March2012/version 7

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CASR series

Maximum continuous DC primary current

Figure 25:

I

Figure 26:

I

Figure 27:

I

Figure 28:

I

The maximum continuous DC primary current plot shows the boundary of the area for which all the following conditions are

true:

-

I

- Junction temperature Tj < 125 °C

- Primary conductor temperature < 110 °C

- Resistor power dissipation < 0.5 x rated power

Frequency derating

Figure 29: Maximum RMS AC primary current / maximum DC primary current vs frequency

AC Derating

10

100

1M

1k

10k

100k

0

0.25

0.5

0.75

1

1.25

f (Hz)

CASR 6-NP

0

5

10

15

20

25

30

35

40

0

20

40

60

80

100 120

CASR 15-NP

0

10

20

30

40

50

60

70

80

90

0

20

40

60

80

100 120

CASR 25-NP

0

10

20

30

40

50

60

70

80

90

0

20

40

60

80

100 120

CASR 50-NP

0

20

40

60

80

100

120

140

160

0

20

40

60

80

100 120