Generator test

[Kiwifruit]

Did they not have colour photographs when you were working Irish ?? 

[Irish in Oz]

Did they not have colour photographs when you were working Irish ?? 

I worked in that same workshop in the late seventies that picture is obviously earlier than that, when I was there they had painted it green .

[Irish in Oz]

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Email Jeff. I was looking after the Possis winding machines doing alternators for Ford, Chrysler & BMC. That was 50 years ago but I remember having trouble with some bad insulation material allowing the windings to short out on the laminations.
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Email Westinghouse.

Usually caused by the winding getting damaged when being put into the slot. I usually test at a minimum of 1000V, in the old days it was done over a period of 1 minute called drop testing.
The insulation resistance should be over 1 Meg Ohms but on saying that I personally want to see 100 Meg Ohms plus or Infinity your 8 symbol on its side.

[Snapey]

Ah yes ... the 1000 volt test. Low amps but we all got hit by it at some stage. It rattled the fillings.

[Irish in Oz]

Snapey my test meters are battery powered these day's but even when I was an apprentice we still had the old wind up versions.