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MCC 26

MCD 26

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Fig. 7 Three phase AC-controller:

Power dissipation versus RMS

output current and ambient

temperature

Fig. 8 Transient thermal impedance

junction to case (per thyristor or

diode)

Fig. 9 Transient thermal impedance

junction to heatsink (per thyristor

or diode)

R

d

R

DC

0.88

180°

0.92

120°

0.95

60°

0.98

30°

1.01

Constants for Z

iR

t

1

0.019

0.0031

2

0.029

0.0216

3

0.832

0.191

R

d

R

DC

1.08

180°

1.12

120°

1.15

60°

1.18

30°

1.21

Constants for Z

iR

t

1

0.019

0.0031

2

0.029

0.0216

3

0.832

0.191

4

0.2

0.45