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Parallel transistors – Yaskawa GPD 506/P5 Section One User Manual

Page 37

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PP.P5G5.01.Troubleshoot

Page 37

Rev. 06/11/2003

Parallel Transistors

If the transistor with gain code “G” in the positive portion of T1 shorted, YEA
recommends that all four transistors in that phase be replaced. It is not required
that all four transistors have identical gain codes. Only the transistors in parallel
need to have the same gain code (as shown below). The gain code on transistors
in parallel configurations must be identical.

Code G

Code G

Code B

Code B

T1

T3

T2

Positive DC Bus

Negative DC Bus

Code B

Code B

Code C

Code C

Code F

Code F

Code A

Code A

Constitutes
1 Phase

This manual is related to the following products:
See also other documents in the category Yaskawa Equipment: