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20th Dec 2017, 01:22 PM #1Senior Member
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240v to 220v cheap solution? For china stuff
The servos and China gear I'm looking at online looks like it's not rated to 240v AC Aus mains. Is there a cheap 240v to 220v transformer or electrical solution I can use?
Looking at some of these servos, I would be a bit worried about powering them straight off my powerpoint:
https://www.aliexpress.com/item/AC-S...999.273.bNJKSF
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20th Dec 2017, 01:44 PM #2Intermediate Member
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- Oct 2012
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- Wallerawang NSW
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I have 5 of these or similar to these servo motors - 3 in my mill and 2 in my lathe and they run fine on 240V. I don't think you will need a transformer. I use my machines most weekends sometimes for 8 hours with no issues. Our supply transformer is just outside my shed and it gives me 253 volts at my machine and they still run cool with no issues for over 3 years now.
Steve
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20th Dec 2017, 02:25 PM #3Member: Blue and white apron brigade
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Interestingly the specs on one part of that page do say
- AC Voltage:208-230 / 240 V !
I wouldn't worry about it.
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20th Dec 2017, 03:14 PM #4Senior Member
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These chinese ones from aliexpress? A lot do look the same
And yep thanks BobL, I was just a little paranoid cause I read some posts before about suppliers who put on 240v with VFDs but they won't guarantee them with Australian conditions. My electrical knowledge esp. AC is limited.
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20th Dec 2017, 09:30 PM #5Most Valued Member
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- May 2011
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If you're really concerned I have a 240 -220 volt transformer, you can have for the cost of postage, you'd be doing me a favor taking it.
KrynTo grow old is mandatory, growing up is optional.
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21st Dec 2017, 01:52 AM #6
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21st Dec 2017, 06:00 PM #7Most Valued Member
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- Murray Bridge S Aust.
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Hi Baron, the one I have is about 2 kg, came out of some apparatus that I pulled apart from the local vet. Might have been an Xray machine, rings a couple of bells in the brain box. No variables switches or anything, 240 in 220 outlet plug.
It's FREE, plus Postage if anyone wants/needs it.
Will do a pic of it when I go out to the shed shortly.
KrynTo grow old is mandatory, growing up is optional.
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21st Dec 2017, 08:19 PM #8Golden Member
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- Jan 2016
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If you really do need 220v maybe a variac is another option
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21st Dec 2017, 09:47 PM #9Senior Member
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21st Dec 2017, 09:59 PM #10
Hi Guys,
Kryn, the transformer I have has removable end plates and you have to move the input and / or output cable ends to a marked tapping. It could also be used at 110/110 V as well. These transformers used to cost a lot of money, its probably worth more in scrap copper today.
Re: Variac, I have one of those as well ! Another monster, 20 amp if I remember correctly, that weighs around 50 or 60 kilo. It used to have a motor attached to the shaft, but I re-purposed that years ago.Best Regards:
Baron J.
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21st Dec 2017, 11:41 PM #11Golden Member
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- Jan 2016
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- Wodonga Vic
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- 38
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My Variac is only a baby (10amp) and about 20 kilo, it occupies a milk crate on a low shelf in the garage.
It has a Bakelite wheel on top to adjust the voltage, I feel like Dr Frankenstein every time I use the thing!
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