electical questions about 3 phase

[jimp 1]

In all seriousness, I am one of those with a lot of experience. To offer any help at all, I would need a lot more info - like what kind of project?

PM me with as much info as you can.


edited to add: Jeffyxyz knows what he's talking about, no doubt can offer solutions as well.

Jim

[Jeffwxyz 0]

Come on guys, you could not help him?

Here is your dry reading assignment for the night. There will be a test on this.
http://library.abb.com/global/scot/scot209.nsf/veritydisplay/f32a2e74dd7d8dd1c1256cc2004fcf60/$File/ITSCE-401504001.pdf

See page 2, fig 11 & 12.

See page 4 for a description of figs 11 & 12.

BTW, MikeForsythe
They really use hydrogen to cool stators. Could'nt you have been more creative?

Next time you should use a GE Turboencabulator. That would work better.

One day if I am bored, I am going to try and get my purchasing dept to buy one from the GE distributor.
See attached

[Belgian_Draft 0]

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Normally, when you have auxiliary contacts on a breaker they are used for indicator lights, to power a coil on a control relay or to interlock with another device.

Are you sure that you have a Circuit Breaker? Judging by the numbers you gave us, may be a I.E.C. rated CONTACTOR.

There is a big difference between a Breaker, a Contactor and a relay. It could even be an overload relay. We need to know what it really is.

The numbers are for sure from an IEC device. Can you give us a picture?

Also can you tell us the manufacturer? I can look up the info in a catalog if I know that.

+1 from here...

400A@480VAC equates to roughly a 350 hp motor. That'll set you back a few jump tickets, amigo. And no, even with a flux capacitor, ya can't "rob" 120 volts from there. A properly located and installed CPT might get you where you want to go, but as the safety geek for the outfit I work for I'd seriously advise staying away. Also- get your NFPA 70E guide out and equip yourself with the proper PPE/AFC.

sheesh... I can never tell when you guys are yankin' chains.

Wal-Mart

257.476241 hp to be exact.

HAMMER:
Originally employed as a weapon of war, the hammer nowadays is used as a
kind of divining rod to locate the most expensive parts adjacent the
object we are trying to hit.

[Jeffwxyz 0]

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257.476241 hp to be exact.

How did you get that?

Assumptions:
400 Amps
480 Volts
.85 Power Factor
.92 Motor Efficiency
.7457 conversion kW to HP

400 A x 480 v x 1.73 / 1000= 332.16 (apparent kW)

332.16 x .85 x .92 / .7457 = 348 Shaft HP

Edited to correct formula

[akarunway 1]

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master electricians, or those with a lot of experiance please reply.

please PM, [Beer][Beer][Beer][Beer] to follow if all works out

Le Roy

Don't cut into 480 w/ a sawsall when you see CPVC in a ditch and think it's a water line. Not a pretty pic.

I hold it true, whate'er befall;
I feel it, when I sorrow most;
'Tis better to have loved and lost
Than never to have loved at all.

[MikeForsythe 0]

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BTW, MikeForsythe They really use hydrogen to cool stators.

Really? And here I just thought I pulled that out of my ass......NOT Next you will be telling me that the purity has to stay above 99% and the pressure needs to always exceed that of the stator water cooling system

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Could'nt you have been more creative?

You don't have to be creative when reality works!

Time and pressure will always show you who a person really is!

[mnealtx 0]

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master electricians, or those with a lot of experiance please reply.

please PM, [Beer][Beer][Beer][Beer] to follow if all works out

Le Roy

Don't cut into 480 w/ a sawsall when you see CPVC in a ditch and think it's a water line. Not a pretty pic.

Would that be the voice of experience?

"OOOOhhhh...look at the pretty light show!!!"

Mike
I love you, Shannon and Jim.
POPS 9708 , SCR 14706