C&H Technology ND42__25 - Manual (Page 6)

Powerex, Inc., 173 Pavilion Lane, Youngwood, Pennsylvania 15697 (724) 925-7272 POW-R-BLOK
TM
www.pwrx.com Dual SCR/Diode Isolated Module
250 Amperes / Up to 1600 Volts
Revision Date: 05/17/2010
ND42__25
Six-Pulse Bridge Circuit Total Power Dissipation & Maximum Rated Output Current With Sink to Ambient
Resistance of Heatsink as a Parameter.
Total Power Dissipation vs Maximum Rated Output Current
0
200
400
600
800
1000
1200
1400
1600
1800
2000
0 100 200 300 400 500 600 700 800
Maximum Bridge Output Current (A)
0
200
400
600
800
1000
1200
1400
1600
1800
2000
To
ta
l Po
we
r Dis
sip
a
tio
n (
W
)
Powerex ND42--25 Pow-R-Blok 6-Pulse Bridge
0
200
400
600
800
1000
1200
1400
1600
1800
2000
10 30 50 70 90 110 130
Ambient Temperature (C)
T
otal Power
Dissipation (
W
)
0.30
0.20
0.15
0.12
0.10
0.08
0.06
0.05
0.04
0.03
0.025
0.02 0.015 0.01
Rth S-A (C/W)