28v 570 amp alternator !!!!!!!

[bschwartz]

Did I read this right?!?!?  Almost 16,000 watts?

http://www.ebay.com/itm/Niehoff-generator-alternator-heavy-duty-industrial-diesel-engine-electric-/130617332985?hash=item1e696654f9&item=130617332985&pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr#ht_500wt_926

[LowGear]

Yup.

I sure wish it was 570 Volts by 28 Amps.

Casey

[dieselgman]

Military spec... hard to tell if those are truly "new" as stated in the add or are take-offs as they appear to be in the photo. The presentation leaves me a bit wary, especially since it is a vulnerable piece of electrical and a bit pricey to boot.

dieselgman

[carlb23]

Yup.

I sure wish it was 570 Volts by 28 Amps.

Casey

Casey,

Why don't you get a used 3phase 480 volt AC motor and rectify the output.  you will need to spin it around 1875 to 1900 rpm i think.  I don't know what hp you would need , but i suspect that anything above 7hp would be enough.

[LowGear]

Hi Carlb,

Because no one has actually done it that's talking.  Every time I follow a lead it turns into the future tense.  I've got the  7 hp.  And I've got the 25 inch flywheels.  I'm looking for a three phase generator.  I think my tractor PTO idea is solid but I'm rigged for twin V belts or serpentine will work as well.

I'm going to an industrial garage sale tomorrow to look at three phase motors.  What should I be looking for besides 3 phase 480 volt?

Casey

[Tom]

You will want something around 1800 rpm on the name plate.

[listerdiesel]

Looks like they are used on the Caiman RG33 vehicle, used by the US Army:

http://www.army-technology.com/projects/rg33-mrap/

Alternator referenced here:

https://safety.army.mil/LinkClick.aspx?fileticket=gkUxtA%2BSysI%3D&tabid=818

NSN Number:  2920-01-560-3613

Peter

[carlb23]

Hi Carlb,

Because no one has actually done it that's talking.  Every time I follow a lead it turns into the future tense.  I've got the  7 hp.  And I've got the 25 inch flywheels.  I'm looking for a three phase generator.  I think my tractor PTO idea is solid but I'm rigged for twin V belts or serpentine will work as well.

I'm going to an industrial garage sale tomorrow to look at three phase motors.  What should I be looking for besides 3 phase 480 volt?

Casey

it should be a 1725rpm 3phase, but i don't see why you cant use a 240 motor somewhere in the 7hp range should work.  Do not get a 3400rpm motor. how much voltage DC do you need?   
I read somewhere where they are using AC motors as grid tied synchronous generators in some hydro setups.

[deeiche]

Hi Carlb,
SNIP
I'm going to an industrial garage sale tomorrow to look at three phase motors.  What should I be looking for besides 3 phase 480 volt?

Casey

I've seen milspec 3 phase equipment forsale in Gov't auction.  I know you are located in Hi, but I don't know where the auctions are in relationship to you.

[LowGear]

This tread is really about these bad boy alternators so I started another one about grid tying your generator.

http://listerengine.com/smf/index.php?topic=6159.0

Casey