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Old 01-22-2017, 11:42 PM   #1
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Default welder load demand caluactions

Hate to bother ya guys but I just ran into a stumping block for a momentary .,,

Ya I know I did have load demand caluations for 460 volts but nothing on 400 volts system and unforetally yes we do have both 460 volts delta or 400 volts wye system here and if anyone of ya guys have a trick on getting the figures on 400 volts?

The load demand caluation is account for 8 welders on single circuit due it will be used as portable power disubation panel.

The welders they are Miller stick welder and wirefeeders types the FLA is about 38 amps @ 400 volts ( the wirefeeders about 30 amps but not got the specs yet )

Keep in the mind I rather use the NEMA/ NEC figures than JIS ( Japan industrail standard )
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Old 01-23-2017, 04:54 AM   #2
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Modern power-electronics ==> change every issue to POWER to energy/time.

Be conservative
, (you're are in Sebu?) where local temperatures are actually pretty warm.

Modern power circuits depend upon solid state switching ( & DC impedance )-- and voltage stacking.

So, stop thinking inductively.
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Old 01-23-2017, 06:49 AM   #3
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Quote:
Originally Posted by telsa View Post
Modern power-electronics ==> change every issue to POWER to energy/time.

Be conservative
, (you're are in Sebu?) where local temperatures are actually pretty warm.

Modern power circuits depend upon solid state switching ( & DC impedance )-- and voltage stacking.

So, stop thinking inductively.
Fair enough Telsa .,,

However you spell Sebu wrong it is Cebu and I do go in Cebu pretty often but as long ya can stand the 12 hour ride on ferry boat but dont ask me about dammed planes...

But yes it do get pretty warm here in Cebu and Mindanao useally anywhere from 20°C to high as 40°C somecase it can hit 45°C easy.

I did found one chart but I think that chart I have is kinda outdated so I am looking for the recent one.
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Old 01-23-2017, 08:00 AM   #4
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I'm confused. Why does voltage have anything to do with the demand calc?
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