Re: Dedicated Line for Amp?
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Joined: Sep 2009
Posts: 1,912 Likes: 101
connoisseur
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connoisseur
Joined: Sep 2009
Posts: 1,912 Likes: 101 |
2 phase lines are 90 degrees apart electrically. 240V house power is single phase and is sometimes called split phase. hmmm ... I think maybe you meant 120 degrees apart ... and yes if you only look at the difference between line one and line 2 it's single phase which is what most 240V devices see. It's just a point of view. I'm thinking about it from power into the house perpective and your looking at it as power distribute to the device. I don't think we are disagreeing here, If you don't distribute the neutral, the outlet is single phase ... but what is it if you do distribute the neutral? Anyway, It would have been nice to have all three phases but I don't think it's distributed on the pole in residential areas. There are a few machines I'd would have consider'ed if it was.
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Re: Dedicated Line for Amp?
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Joined: Jan 2007
Posts: 10,490 Likes: 116
shareholder in the making
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shareholder in the making
Joined: Jan 2007
Posts: 10,490 Likes: 116 |
Nope. 90 degrees apart.
I remember, Mr. Vermeulen, my grade 11 Electric Machines teacher, hand-built a 2-phase motor. He told us, "You rotten kids will never see another machine like this in your pathetic lives." He wanted to demonstrate how easy it was to start a 2-phase motor compared to a single phase motor. The rotating field starts the rotor when it's stationary.
I clearly remember the two windings were spaced 90 degrees apart and so were the two phase voltages. It had 4 brushes and he brought 4 wires out.
Mr. V was one of those rare teachers who expanded my mind.
House of the Rising Sone Out in the mid or far field Dedicated mid-woofers are over-rated
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Re: Dedicated Line for Amp?
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Joined: Sep 2009
Posts: 1,912 Likes: 101
connoisseur
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connoisseur
Joined: Sep 2009
Posts: 1,912 Likes: 101 |
ok, did I miss something ... this is 2 lines of a 3 phase generator ... take your choice of two: 0, 120 or 240 degrees of phase shift ... ahhh wait, I think I understand ... your up to your devilish tricks again ... knowingly causing trouble and confusion by referring to something similar but different ... and I stepped into the trap ...
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Re: Dedicated Line for Amp?
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Joined: Jan 2007
Posts: 10,490 Likes: 116
shareholder in the making
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shareholder in the making
Joined: Jan 2007
Posts: 10,490 Likes: 116 |
No. I assure you I am up to nothing but trying to educate. It is two phases with each separated by 90 electrical degrees. Each phase goes to a winding. The two windings are spaced 90 degrees apart. That is a two phase motor - or generator if you decide to spin the shaft and watch the voltages between the brushes. Two phase power is rare in North America. It's all single and three phase now. Scroll down to Figure 17. Two phase power is not the same as two phases of a three phase source. https://www.industrial-electronics.com/epst-3e_14b.html
House of the Rising Sone Out in the mid or far field Dedicated mid-woofers are over-rated
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Re: Dedicated Line for Amp?
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Joined: Jul 2004
Posts: 4,444 Likes: 16
connoisseur
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connoisseur
Joined: Jul 2004
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Pretty good visual aid worth the watch....... https://www.youtube.com/watch?v=CBiUOQ2WX2IAnd yah, 2 phase power is a different animal than single/three-phase.
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Re: Dedicated Line for Amp?
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Joined: Sep 2009
Posts: 1,912 Likes: 101
connoisseur
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connoisseur
Joined: Sep 2009
Posts: 1,912 Likes: 101 |
He's egg'in you on Michael ... he knows exactly what he's doing ...
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Re: Dedicated Line for Amp?
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Joined: Jan 2007
Posts: 10,490 Likes: 116
shareholder in the making
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shareholder in the making
Joined: Jan 2007
Posts: 10,490 Likes: 116 |
Two phase motor vid: https://youtu.be/XOWO2o9_J3EThree phase rotating magnetic field: https://youtu.be/_DYt0WpmwqgIt's magic!
House of the Rising Sone Out in the mid or far field Dedicated mid-woofers are over-rated
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Re: Dedicated Line for Amp?
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Joined: Sep 2009
Posts: 1,912 Likes: 101
connoisseur
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connoisseur
Joined: Sep 2009
Posts: 1,912 Likes: 101 |
I remember, Mr. Vermeulen, my grade 11 Electric Machines teacher, hand-built a 2-phase motor. He told us, "You rotten kids will never see another machine like this in your pathetic lives." . Obvisously he knew his audience
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Re: Dedicated Line for Amp?
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Joined: Jan 2007
Posts: 10,490 Likes: 116
shareholder in the making
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shareholder in the making
Joined: Jan 2007
Posts: 10,490 Likes: 116 |
Yup. Three of us were the exception.
House of the Rising Sone Out in the mid or far field Dedicated mid-woofers are over-rated
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Re: Dedicated Line for Amp?
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Joined: Sep 2012
Posts: 1,037 Likes: 69
connoisseur
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connoisseur
Joined: Sep 2012
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I can tell a lot of googling went into this thread…. Lol.
Michael is an OG sparkie! Respect!
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