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Excellway ZX7-250 250A 220V Mini Electric Welding Machine Portable Digital Display MMA ARC DC Inverter Plastic Welder Weld Equipment
US$67.99
US$98.99
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Torontofred Themeter you're using is either an average AC meter or True RMS. In either, the wave form must be sine wave. If you have any other, then you won't be reading it correctly.
Reply 24/12/2020
BG401544916 @Torontofred Canyou explain about what you are talking. About AC or DC current. Thank you.
Reply 25/12/2020
Gerard Vaughan The output is said to be d.c. Ate you saying the makers used an instantaneous peak reading ammeter ? But in any case we don't know if the current is time varying at 100-120 cps. It might be smooth.
Reply 25/12/2020
Gerard Vaughan
Torontofred
So you reckon the thing supplies full wave rect unsmoothed dc, and the makers are quoting the instantaneous peak current ?
That's still a ssttreeeech !
Pot202 Happy Birthday and Merry Christmas. I would like you to help me fix the machine at 250 amps. With some photo maybe. Thank you very much.
Reply 26/12/2020
Garabonczias Dear All! Some important points: (1) The current should be DC (in AC the arc would disappear 100 times in a second...!). (2) That DC current is never smooth during welding, as contact is bad, arc has haunting (continously changing) resistance
Reply 02/01/2021
Garabonczias
Torontofred
One more thing: the clamp meter should be TRMS one, with high Crest Factor. Than it will show a better value. BUT, the current waveform is so distorted, you cannot expect a really good meaured value.
Best regards
Mieciu HiMarek - could you explain how to adjust display to show real current values?
Reply 08/01/2021
maz77 hi marek jestes z polski ?
Reply 09/01/2021
luckis @Torontofred Just connect in parallel another electrolytic capacitor 680μf 400v .
Reply 13/01/2021
BG144943792 onde que regulam a maquina pra lamentar a Amperes
Reply 18/01/2021
Kamber Gülmez ben annamadım yazdı MH dan
Reply 22/01/2021
zappymax
where do you install such described as ====Reply to Torontofred: Just connect in parallel another electrolytic capacitor 680μf 400v .
— if so easy to get 250 amp, why is such additional cap not installed by manufacturer 🤔🤔
Zavah exelente tu aporte muchacho muy bueno :)
Reply 17/02/2021
Peter
Couldyou post a picture what is included or do i need to buy some tools to start
thx for the review
ushmucan СПАСИБО, МАРЕК. САМЫЙ СОДЕРЖАТЕЛЬНЫЙ ОБЗОР. мой ящик ushmucan yandex ru
Reply 25/03/2021
BG121417372 Where can I get a User Manual please.
Reply 31/03/2021
abo omar abo omar 🔴 Does it work for the quiet and the beginners ??
Reply 09/04/2021
Romanko77 Are welding cables supplied with this device?
Reply 15/04/2021
hitman247 Scesc, I have bought this welder, but unfortunately turned the vr1 potentiometer on main board upside, can you please tell me the original value so I can set it back? unfortunately my welder does not have the trimmer for calibrating display, only fixed resistor or maybe entire small PCB from under display is missing, not visible good enough. thank you
Reply 03/11/2021
REXX5000 the output on welders is AC. not DC. especially these type of welders.
Reply 22/06/2022
REXX5000 @hitman247 remove the fixed resistor and replace with a potentiometer. that's the hack. then measure the output with clampmeter and adjust the the current output on the welders display. enjoy.
Reply 22/06/2022
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