SD-4

Powerex, Inc., 200 Hillis Street, Youngwood, Pennsylvania 15697-1800 (724) 925-7272

CM4208A2

SCR/Diode POW-R-BLOK™ Modules

25 Amperes/800 Volts

MAXIMUM ON-STATE POWER DISSIPATION

(REVERSE PARALLEL CONNECTION)

010

50

20

30

40

60

70

80

360

o

RESISTIVE,

INDUCTIVE LOAD

NOTE: THE CURVES INDICATE THE RELATIONSHIP BETWEEN

THE AVERAGE ON-STATE POWER DISSIPATION PER MODULE

AND THE RMS ON-STATE CURRENT.

0

10

20

30

40

50

60

70

80

MAXIMUM ALLOWABLE CASE TEMPERATURE

(SINGLE PHASE BRIDGE CONNECTION)

010

50

20

30

40

80

90

100

110

120

130

360

o

RESISTIVE,

INDUCTIVE

LOAD

515

25

35

45

NOTE: THE CURVES INDICATE THE RELATIONSHIP BETWEEN

THE CASE TEMPERATURE AND THE DC OUTPUT CURRENT

(FOR TWO ELEMENTS) WHEN USED IN THE SINGLE PHASE

BRIDGE CONFIGURATION.

MAXIMUM ALLOWABLE CASE TEMPERATURE

(THREE PHASE BRIDGE CONNECTION)

010

50

20

30

40

60

70

80

360

o

NOTE: THE CURVES INDICATE THE RELATIONSHIP BETWEEN

THE CASE TEMPERATURE AND THE DC OUTPUT CURRENT

(FOR THREE MODULES) IN THE THREE PHASE CONFIGURATION.

RESISTIVE,

INDUCTIVE

LOAD

80

110

120

130

100

90

MAXIMUM ON-STATE POWER DISSIPATION

(THREE PHASE BRIDGE CONNECTION)

010

50

20

30

40

60

70

80

NOTE: THE CURVES INDICATE THE RELATIONSHIP BETWEEN

THE ON-STATE POWER DISSIPATION (PER MODULE) AND THE

DC OUTPUT CURRENT (FOR THREE MODULES) IN THE THREE

PHASE BRIDGE CONFIGURATION.

0

10

20

30

40

50

60

70

80

360

o

RESISTIVE, INDUCTIVE LOAD

PER SINGLE ELEMENT

MAXIMUM ON-STATE POWER DISSIPATION

(SINGLE PHASE BRIDGE CONNECTION)

05

RESISTIVE,

INDUCTIVE LOAD

NOTE: THE CURVES INDICATE THE RELATIONSHIP BETWEEN

THE AVERAGE ON-STATE POWER DISSIPATION AND THE DC

OUTPUT CURRENT FOR THE SINGLE PHASE BRIDGE

CONFIGURATION (POWER DISSIPATION EXPRESSED FOR EACH

MODULE AND DC OUTPUT CURRENT EXPRESSED FOR THE PAIR)

0

10

20

30

40

50

60

70

80

10 15 20 25 30 35 40 45 50

360

o