PSKT26 Datasheet, PDF (4/4 Pages) Powersem GmbH – Thyristor/Diode Modules

Circuit
W3
3 x PSKT 26 or
3 x PSKH 26
Fig. 7 Three phase AC-controller:
Power dissipation versus RMS
output current and ambient
temperature
PSKT 26
PSKH 26
Z_thJC(t)
Fig. 8 Transient thermal impedance
junction to case (per thyristor or
diode)
R_thJC for various conduction angles d:
d
DC
180°
120°
60°
30°
R_thJC (K/W)
0.88
0.92
0.95
0.98
1.01
Constants for Z_thJC calculation:
i
R_thi (K/W)
t_i (s)
1
0.019
0.0031
2
0.029
0.0216
3
0.832
0.191
PSKT 26
PSKH 26
Z_thJK(t)
Fig. 9 Transient thermal impedance
junction to heatsink (per thyristor
or diode)
R_thJK for various conduction angles d:
d
DC
180°
120°
60°
30°
R_thJK (K/W)
1.08
1.12
1.15
1.18
1.21
Constants for Z_thJK calculation:
i
R_thi (K/W)
t_i (s)
1
0.019
0.0031
2
0.029
0.0216
3
0.832
0.191
4
0.2
0.45
POWERSEM GmbH, Walpersdorfer Str. 53  2002 POWERSEM reserves the right to change limits, test conditions and dimensions
D - 91126 Schwabach
Phone: 09122 - 9764 - 0 FAX: 09122 - 9764 - 20