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Topic: Recommendations for carbon arc rectifier repair
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David Buckley
Jedi Master Film Handler
Posts: 525
From: Oxford, N. Canterbury, New Zealand
Registered: Aug 2004
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posted 01-02-2007 06:04 AM
Our carbon arc rectifier has developed a fault, which I believe (as in I hope it is, but haven't actually got the test prods out yet) will be a couple of popped diodes, pictures:
![-](http://www.film-tech.com/uploads/uploads0503/obi_rect1.jpg)
![-](http://www.film-tech.com/uploads/uploads0503/obi_rect2.jpg)
The carbons run at around 60A, does anyone still repair these things and have suggestions of appropriate diodes? Does anyone recognize this rectifier? It was locally made in NZ under licence from Westinghouse. heres the makers nameplate, the manufacturer no loger exists as a company.
![-](http://www.film-tech.com/uploads/uploads0503/rectifier_nameplate.jpg)
If theres no knowledge of this old beast, then perhaps some general advice? Should I build a like for like with half a dozen diodes, or use a three phase module? How much do I need to over-rate the diodes for, current wise?
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