buying a SUNKKO spot welder 120vs220

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jocoman   100 mW

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buying a SUNKKO spot welder 120vs220

Post by jocoman » May 23 2016 11:21am

Hi
I am thinking of getting this spot welder.
Should i get the 120v version or the 220v version. i live in canada and the
220 is at 60Hz.
I think if i get the 220v version it is specedat 50 hz. Not sure if this is a problem
I heard 220v is better, but i am worried about the frquency as it doesn't say for sure.
Does the 120v version work Ok. if so that would be the easiest.
Thanks for the help.
Here is the unit
http://www.aliexpress.com/item/SUNKKO-7 ... 0ff4b43d7e

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flippy   100 kW

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Re: buying a SUNKKO spot welder 120vs220

Post by flippy » May 23 2016 1:59pm

you have 220v so getting a 110v model will instantly pop the unit and probably have some nice fireworks.

220v model is more reliable anyway and 50 or 60hz does not matter in this application.
Lithium beats liquid dinosaurs.

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cal3thousand   1.21 GW

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Re: buying a SUNKKO spot welder 120vs220

Post by cal3thousand » May 23 2016 2:04pm

flippy wrote:you have 220v so getting a 110v model will instantly pop the unit and probably have some nice fireworks.

220v model is more reliable anyway and 50 or 60hz does not matter in this application.
I'm guessing that he is asking due to also having access to 110 V.

I would also assume that 220 V will be more reliable, running less current for the same power levels.
Get a Cycle Analyst and a Multimeter, you're still a noob if you don't have at least one of each.

Planning on posting questions or buying anything on this site? Put up your country (at minimum) on your profile. This is a worldwide forum and we haven't reached clairvoyance.

jocoman   100 mW

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Re: buying a SUNKKO spot welder 120vs220

Post by jocoman » May 23 2016 6:19pm

Yes exactly I have access to both 120 or 240 at 60Hz.
Which model should I order? given the unit is spec'd at 50hz.
Does it matter?
txs

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flippy   100 kW

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Re: buying a SUNKKO spot welder 120vs220

Post by flippy » May 24 2016 2:43am

might be handy to get a replacement triac on hand. they tend to blow their ass out...


https://syonyk.blogspot.nl/2015/05/sunk ... epair.html
Lithium beats liquid dinosaurs.

Punx0r   100 GW

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Re: buying a SUNKKO spot welder 120vs220

Post by Punx0r » May 24 2016 3:00am

If the unit contains a transformer designed for 50Hz then running it on 60Hz will do it no harm at all. The other way around would cause over heating.

irq   10 W

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Re: buying a SUNKKO spot welder 120vs220

Post by irq » May 24 2016 4:28pm

make sure your circuit breaker can handle the massive inrush current, i use a slightly cheaper china spot welder which was not usable with the 16 Amp Breaker in B Characteristic (220v, Germany). After switching to 16Amp / C Characteristic it started to get usable, but it still caused blackouts until i added a inrush current limiter (afaik basically its just a NTC). Its just a cheap device, like this

http://www.allegra24.de/bilder/produkte ... e_3293.jpg

In Combination, C Breaker and this Limiter the Welder does a good job.
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Syonyk   10 kW

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Post by Syonyk » May 24 2016 10:16pm

If you have access to 220v, buy the 220v version.

I believe the engineering to go from the 220v version to the 120v version was "Replace the transformer." Possibly tweak the power supply for the board, but if it's a competently designed power supply (which is very much in question) it may have been fine either way.

There's no real evidence that the 120v version has been beefed up to handle the ~2x current, and as was linked above, the triac blew up on mine shortly after I got it and I had to replace it.
Battery packs, Sunkko Welders, and more. http://syonyk.blogspot.com/

ninja007   100 µW

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Re: buying a SUNKKO spot welder 120vs220

Post by ninja007 » Aug 04 2017 5:53pm

I just received the Sunnko 709AD, I ordered the 220 version due to the comments in here. I am wondering what people did with the plug end - it is a standard 3 prong 110 looking plug. Did you wire in a 220 plug, or did you install a regular outlet wired to a 220 breaker?

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tmho   100 W

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Re: buying a SUNKKO spot welder 120vs220

Post by tmho » Jul 11 2018 3:47am

I also want to buy one. I am also in Canada. All the standard power outlets/sockets are just 120V 15A. There are some methods to get 220V but they are not simple, like getting from the stove/range or dryer outlet. I hope that someone could tell me some simple methods to get 220V for the spot welder use.

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flippy   100 kW

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Re: buying a SUNKKO spot welder 120vs220

Post by flippy » Jul 11 2018 1:17pm

tmho wrote:
Jul 11 2018 3:47am
I also want to buy one. I am also in Canada. All the standard power outlets/sockets are just 120V 15A. There are some methods to get 220V but they are not simple, like getting from the stove/range or dryer outlet. I hope that someone could tell me some simple methods to get 220V for the spot welder use.
dont buy one. i have blown up 2 of them.

not adverstising or anything but for home gamers i can recommend this:

https://malectrics.eu/product/diy-ardui ... r_battery/

its MUCH more reliable and wont blow your house fuses every time you turn it on.
and its cheaper.
Lithium beats liquid dinosaurs.

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