Arc furnace at 42000 Amps
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Uploaded by RODALCO2007 on Jun 20, 2008
Pacific Steel arc furnace melting scrapsteel, averaging 42,000 Ampères at 300 - 400 Volts ac.
- 182 likes, 2 dislikes
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dam that must be a big transformer, haha i need one, never seen this video untill now, place looks like fun, love the video man
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Damn, i wanna see the transformer that powers this thing!
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youre job is deuce
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@jmartis2 - Actually, I am correct. VA, while affected by reactivity is a separate measure. Regardless of how many inductors, capacitors, etc you put in a circuit or how you modify the phase, VA is VA. This is because DC has a stationary wave form so it's power factor is constant. 10vdc*10a=100W period. 10vac*10a*cosθ=70w. This is because AC voltage changes with the waveform.
:)
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@1krr Nope, you have both W and VA in an AC circuit and they are the same only for unity power factor. When the power factor is less than 1, the V * A is less than W in the circuit. This might be caused either by reactive power (capacitive, inductive) which results in a phase difference in V/I, and/or a distortion of their waveforms. For example when you connect a capacitor to an AC source, it draws amps, there are volts of it but the watts are zero.
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@denelson83 - A voltamp (VA) is a measure of power, like a watt, but in an AC circuit. In AC the voltage is constantly changing between a postive and negative value which means the circuit is only at peak power for a fraction of total time where a DC circuit stays at the same voltage. So the difference just allows one to compensate for that fact.
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@RODALCO2007 What's the difference between a VA and a Watt?
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@RoudyRaccoon hahahhahahahhah
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@HugMyNutz When nothing is happening.
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how do you know if something has gone terribly wrong?
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42kA * 400v = 16.8 MVA output. That is a LOT of power! How big is the furnace transformer?
a380rockerfan 3 months ago
@a380rockerfan 40 MVA
RODALCO2007 3 months ago
Been working around EAFs 20+ years and never a dull moment, lol.
This is one of the better vids I've seen, gives a pretty good idea of how intense steelmaking is, but as most will agree, nothing compares witnessing it in person.
femix26 4 months ago in playlist femix26's Favorited Videos
@femix26 Intense, very hot and extremely noisy
Thanks for your comment.
RODALCO2007 4 months ago
So why are the arms moving up and down like that? Are they on some sort of springs to absorb the shock of the arcing?
Also, do you happen to know the size of the conductors used to power those electrodes?
yourTIV0 4 months ago
@yourTIV0 Those arms are hydraulic controlled and lifted and lowered to maintain a steady arc. Especially when not all steel has melted a lot of movement is visible.
RODALCO2007 4 months ago