[Amps] Testing encapsulated HV rectifier diode blocks?

[peter chadwick]

A variac and a 24 -0- 24 transformer. Check the outputs from each side individually: they should be equal. That tells you the diodes are good (or the same number shorted one each side!) Then a Hi-pot test for leakage at what you think the PIV is.
73
Peter G3RZP





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Message Received: Sep 21 2012, 05:11 AM
From: "Chris Wilson" 
To: "AMPS" 
Cc: 
Subject: [Amps] Testing encapsulated HV rectifier diode blocks?



20/09/2012 19:38

Henry (and others) often used an encapsulated HV diode module or block
for the HV rectification. Three spade type terminals per block, two
blocks used in single phase linear amp supplies, three in 3 phase
supplies. I have acquired a few used ones, but do not know how to test
them other than bang them in a working circuit, which might be nasty
if one is SC. A diode tester won't produce the voltage needed. Has
anyone got a safe means of doing a basic functionality test on these
things out of circuit please? Thanks.

-- 
Best Regards,
Chris Wilson.
mailto: chris at chriswilson.tv

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