Powerex, Inc., Hillis Street, Youngwood, Pennsylvania 15697 (724) 925-7272

POW-R-BLOK

TM

Dual SCR/Diode Isolated Module

250 Amperes / Up to 1600 Volts

Revision Date: 12/04/2002

ND47__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

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0

100

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700

800

Maximum Bridge Output Current (A)

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Powerex

ND47--25 Pow-R-Blok 6-Pulse Bridge

0

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10

30

50

70

90

110

130

Ambient Temperature (C)

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)