View Full Version : Vintage transformer ?
It weighs a ton and looks lethal, what’s it for ?
Auto transformer .500VA
Ratio 230/115v. 1 Phase .50.C.P.S
Switchgear & Gowans
England https://uploads.tapatalk-cdn.com/20180925/87627e518a2b555317965a9fdfc274ba.jpghttps://uploads.tapatalk-cdn.com/20180925/1a2b6304233e985fb2be911b690cf682.jpghttps://uploads.tapatalk-cdn.com/20180925/ceb689500606368b042950353d336e64.jpghttps://uploads.tapatalk-cdn.com/20180925/69d7f758724e0ea40a46d13dc0de1297.jpg
Sent from my iPhone using Tapatalk
Firebottle
25-09-2018, 09:55
It's a step down auto transformer, for running 115V equipment off 230V mains.
The 'auto' part means there is only one winding so it doesn't provide isolation. Rating 500W (VA).
It's a step down auto transformer, for running 115V equipment off 230V mains.
The 'auto' part means there is only one winding so it doesn't provide isolation. Rating 500W (VA).
Thanks for that info Alan , I’m guessing it’ll be of little use to anyone nowadays.
Sent from my iPhone using Tapatalk
http://i68.tinypic.com/2a6jz0k.jpg
http://i68.tinypic.com/2a6jz0k.jpg
[emoji23]
Sent from my iPhone using Tapatalk
Primalsea
25-09-2018, 17:57
500VA is a decent rating. As long as it works okay and is still safe it might be of use to someone who has some US voltage gear.
500VA is a decent rating. As long as it works okay and is still safe it might be of use to someone who has some US voltage gear.
But how do I get the wife to test it without burning the house down 🤷🏼*♂️
Sent from my iPhone using Tapatalk
Yes, if you know someone who has a 'Megger' and can check the integrity of the insulation, preferably at 1,000V, there is no reason why the autoformer can not be used with US gear operating on 115V.
Primalsea
25-09-2018, 19:42
But how do I get the wife to test it without burning the house down *♂️
Sent from my iPhone using Tapatalk
I tend to send mine out to the garden when its raining to test stuff when I think there could be a fire hazard.
I tend to send mine out to the garden when its raining to test stuff when I think there could be a fire hazard.
[emoji23][emoji23]
Sent from my iPhone using Tapatalk
Powered by vBulletin® Version 4.2.3 Copyright © 2026 vBulletin Solutions, Inc. All rights reserved.