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Buzzing change over

lyledunn

A fairly loud buzzing noise has recently appeared in a 200A changeover switch. Everything checked for tightness. Assumption is that it is one of the coils but I am unsure if this is an issue of concern. 

  • 0 in reply to Jaymack

    Not sure, all we were taught was that they were there to 'short out' circulating or rather 'eddy currents' as they were known as back then,  in the iron core, otherwise it got hot and buzzed.

    We didn't go that deeply into it at the time - C&G 200 series 1970's.

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