Electronics > Projects, Designs, and Technical Stuff
Awesome store to get custom transformers from for dyi amps ect
dom0:
--- Quote from: wraper on November 19, 2019, 01:22:39 pm ---
--- Quote from: voltsandjolts on November 19, 2019, 01:17:20 pm ---I don't see any isolation voltage ratings. Is your transformer labelled with such?
Please be careful.
--- End quote ---
It's meaningless unless you test it yourself. They can write whatever they want. Also transformers normally don't have such rating on label.
--- End quote ---
I've seen "2.5 kV OK" or similar stamps on many transformers (Block, Gerth, and some others), so I think at least some reputable manufacturers are testing each unit during production, similar to how reputable tool manufacturers will test the insulation of each insulated tool (I believe they just run them through a salt water bath connected to 5 kV or so and measure the loading).
However you are right that the isolation voltage is usually not put on the label directly. Instead they put the appropriate symbols on there which indicate for what kind of use (class I, class II) the transformer is suitable.
SantaClaw:
Oh, fun, So I can electrocute myself ? That's cool :)
SiliconWizard:
--- Quote from: SantaClaw on November 19, 2019, 06:17:03 pm ---Oh, fun, So I can electrocute myself ? That's cool :)
--- End quote ---
If you think so... :-DD
SantaClaw:
--- Quote from: SiliconWizard on November 19, 2019, 06:28:29 pm ---
--- Quote from: SantaClaw on November 19, 2019, 06:17:03 pm ---Oh, fun, So I can electrocute myself ? That's cool :)
--- End quote ---
If you think so... :-DD
--- End quote ---
No really, it's ok, I bought a 60 amp fuse for it, and I plan on hanging the wires onto the power pole outside my house :)
andy3055:
If you have a HV transformer from an old microwave, you could easily rig something up to test the insulation resistance from the windings to the exposed metal parts.
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