Fig. 7 Three phase AC-controller:
Power dissipation versus RMS
output current and ambient
temperature
Circuit
W 3
3 x PSKT 162 or
3 x PSKH 162
Fig. 8 Transient thermal impedance
junction to case (per thyristor or
diode)
ZthJC(t)
RthJC for various conduction angles d:
d
RthJC (K/W)
DC
180°
120°
60°
0.155
0.167
0.176
0.197
0.227
30°
Constants for ZthJC calculation:
i
Rthi (K/W)
ti (s)
1
2
3
0.0072
0.0188
0.129
0.001
0.08
0.2
Fig. 9 Transient thermal impedance
junction to heatsink (per thyristor
or diode)
ZthJK(t)
RthJK for various conduction angles d:
d
RthJK (K/W)
DC
180°
120°
60°
0.225
0.237
0.246
0.267
0.297
30°
Constants for ZthJK calculation:
i
Rthi (K/W)
ti (s)
1
2
3
4
0.0072
0.0188
0.129
0.07
0.001
0.08
0.2
1.0
POWERSEM GmbH, Walpersdorfer Str. 53
D - 91126 Schwabach
2002 POWERSEM reserves the right to change limits, test conditions and dimensions
Phone: 09122 - 9764 - 0 FAX: 09122 - 9764 - 20
POWERSEM [ POWERSEM GMBH ]
