Yong Hang 45k# compressor. Can you rewire it to 220vac from 110vac?

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It depends on the motor. It has to have a dual coil that is put in series for 220V and in parallel for 110V. I don't own a Yong Heng, but that is a design consideration that happens early. It is pretty rare for a Chinese product to be switchable unless they are advertising it up front. You could always get a step-up transformer, but you have to make sure that the power of the transformer can handle the in-rush or start-up current requirements of the motor. The Yong Heng says that it pulls 1800Watts, so this 2000 Watt transformer should be able to do the trick.
 
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➔ I had the same question, got no answer. I live and shoot in a 220 Volts country, too....

🔹 Then checked European Amazon and Ebay websites, but choices were limited and the shipping charges were very high.

🔹 AliExpress gives you the option to choose between 110V and 220V. The shipping charges to my tropical location appeared to be ransom requests.... 😟 $700 for shipping were the norm.


🔶 In the end, I decided to go with the smaller mobile unit — that you can hook up to your 12V car battery, 110V, AND 220V. The way things should be designed in a global world....


🔸It was a bit cheaper than the single piston Yong Heng.
🔸And no need for water buckets and other inconvenient paraphernalia.
🔸And at the price point these China compressors all break, it's not a question IF but only WHEN. ➔ So I figured it's a gamble no matter what. I might as well get A DISPOSABLE COMPRESSOR for cheaper. 🤣


Good luck with your search! 😊

Matthias
 
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Big Duck said:
I wonder how to tell if it is a dual or single coil?
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You just look at the wires going to the motor. If there are two, it is dedicated to the line voltage, if there are four wires that are the same size (Thickness of wire), it is very likely to have a dual coil.

Keep in mind, though, that even if it supports being wired for 220V, there are other things that are depending on that voltage level, like fuses, etc. Fuse ratings will be half when you change the primary voltage. Your water pump will also have to support 220V, and whatever else I may be forgetting... I would also make sure that your Earth ground is still connected to the chassis properly if you re-wire it...especially since that compressor uses water cooling. Safety first! (y)

I did the same as Matthias, and got a universal voltage compressor, but I take it really easy on mine and fill in 40bar increments.

Anyway, I hope that this helps!
 
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