the drive side, what does the drive circuit look like, are there any 8-pin-opto's,
they are usally white.
Anyhow, replace IGBT's isn't that simple, specially when they are big, you
may have have to adjust software, you probably won't have access to it.
There aren't to much makers of IGBT's you might find out this way.
I have repaired quite a few inverter's, from small to big. From my experience
I can tell you, if the output module is blown, forget it, but it's a good source
of bit's and pieces.
Friedel
At 06:24 a.m. 05/06/03 -0800, you wrote:
I stuck my nose into a drive from a (Japanese?) Milling Machine, and came out holding a dud transistor module. The Markings are
P 50 Z No: 1604
They all say No: 1604. The label shows a darlington class B stage made with NPN Bipolar transistors, and with reverse diodes incorporated. It runs from a DC bus. Absolutely no manufacturer's markings or logo, and I smell a spacial part here. It's three phase ~200V phase to phase, so the most believable guess at the '1604' bit would be 160Amps/400Volts
Can anyone throw me a bone with this one?
--
With best Regards,
Declan Moriarty. -- Author: Declan. Moriarty INET: [EMAIL PROTECTED]
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-- Author: Friedel Bruening INET: [EMAIL PROTECTED]
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