Alternator

Look for a manufacturers name and part number on them and then look up this information.

actually we are manufacturing the alternator & stucked up with the diode rating.

we do want to keep the safety factor, but do not know what it should be?

Secondly these diodes are rotating witht he RPM @ 1500 / 1800, will this affect the diode rating?

Rotating a diode at 1800rpm should not affect its rating.

Dear Mr. Vishram,

I am not an expert in this arena, but from my fundamental knowledge of electrical engineering i would wish to say that please check the excitation current required for the desired alternator voltage. even if you consider a higher rating of diode, it doesn't matter. after all diode acts like a switch. the electrical rating and dimensions also depend on the KVA rating of machine and the mechanical dimensions of alternator(may be i am wrong in this case). Also what type of cooling is considered?? since diode has to withstand the high temperatures inside the alternator.

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