Question on Amps

[rick-l]

does that show 10 different motors? Open Drip Proof, Totally Enclosed Fan Cooled 5 voltages etc.

Originally Posted by Shaun 84 Targa

Impressive work on the installation!

Here is a page from the manual on electrical requirements. This won't be plug and play, but I think I can get it to work.

[Shaun @ Tru6]

It looks that way but I'd say 1 motor and 5 different electrical requirement configurations.

I'm calling IR local customer service this morning.

[1990C4S]

That is an extremely large compressor. It may not be suitable for you.

Is it a piston compressor or a screw type?

[T77911S]

it looks like 208 3 phase or 240 3 phase will work. you will have to up your service to the shop. its like the motor for my tabke saw, i canwire it for 120 or 240. this one just has more options. as you see, the higher voltage just means less current and smaller wires.
unlike what some poeple think, it does not lower your power bill just because of less current.

i dont think it will be too bad to pay an electrician.
i like the knife sharpening comment.

i would put some big bolts in the concrete and mount it on springs to dampen it.

[Shaun @ Tru6]

Thanks. I just talked with IR local office and he said that almost all of these things are dual wired for 230V and 460V, you just have to make the correct connections in the cabinet. I gave him the serial # and he is doing some more checking for me. He also said at 230V I would need an 80 amp breaker.

He said I will need 230V coming in the building so just left a message for my e- company to see what that will entail.

How difficult is it to go from 208 to 230?

90, it's a rotary screw. Yes, it's way overkill for me.

[rick-l]

If you have to get a different motor due to the voltage why not ask them if it will run with a smaller motor, like 15 hp?

[Shaun @ Tru6]

This is now starting to become more trouble than it's worth. E- company says they won't upgrade the service for free because I already have service. I was told I need to have a transformer installed to step up the voltage. I called a few local electricians and they are getting back to me, one just called and estimated $4K.

Talked with another guy and he said it shouldn't be a big deal, he was a car guy, just sold a Roadrunner, he wanted me to price out transformers. He said I should go to 460 just so it runs on less amps. Nice guy.

Is this what I would need?

Square D 30 KVA Three Phase Transformer HV 480 LV 208 120 | eBay

[rick-l]

Holy crap..... This is way out of my league and comfort zone. That transformer is meant to step down 480 to 208Y/120 (line to line, line to neutral) but don't see why it wouldn't also step up.

Of course it will also draw 83 Amps and I don't think you can make a compressor run at less than full capacity.

[1990C4S]

Yes, presuming you have 3 phase power coming in that's what you need.

My 2 cents. Drop this idea. An oversized screw compressor is not the way to go. An oversized piston compressor that runs infrequently is fine, screws are made to be run more frequently (or so I was told when I was buying a 30HP compressor). Pistons for 'shop use', screws for production facilities.

Move on.

[Shaun @ Tru6]

Well it looks like I won't be using it myself but I may gift it to the shop I used to work at. They have the voltage coming in, just checking to see what installation cost will be.

[rusnak]

way over my head, but that compressor is huge. WTF are you doing, Shaun, launching polaris missiles from underwater submarines?

[Shaun @ Tru6]

A man's gotta have a hobby. You'd appreciate this, I scored a 2001 Eclipse 8061 on eBay the other day. Polish copper chassis, dead head with no internal amp so it will only get sound from my PH15.

[rusnak]

^ Very nice!