3 phase

[LIVELY]

My son came up with a real nice 2 ton electric overhead hoist[like you hook on a trolley beam]
the problem is it is 3 phase wired. the ???? is -can it be rewired to a regular 220 shop wiring?? OR DO I JUST RESELL IT??

DAYTON BRAND 230/460 VOLTS

THANKS ALOT, GUYS

 

[BillK]

lively,
The only way to use it is to either change the motor to a three phase motor, or buy a phase converter to run it on. A decent phase converter will probably cost as much as a new single phase hoist, so your best bet is probably sell it and get one that will work on household current.

 

[rockwithjason]

look into a variable frequency drive. they can convert single to three phase and are pretty economical. look on ebay and at surplus dealers.

 

[HemiRambler]

I have near nothing in my 10HP rotary converter and about the same in my 3HP rotary converter. Both made from junk laying around junk bins at work, the electric surplus store and of course Ebay and whereever else I could get stuff DIRT CHEAP. I do have some sweat equity in it, but I learned a little something along the way so I consider that time well spent.

My experience with static converters is that they prefer motors with little load on start up. Bridgeport mill for example. Mine would NOT start up my little 11" Rockwell lathe IF I left it in back gear with the speed cranked - what a pain. Hence my rotary converters I use today.

You could also make a simple static converter (remember not all static converters are the SAME) out of a set of run caps - across each line over to the "generated" leg.


Bottom line - if there's a will there's a way. I always seemed to have more time than money so I spent alot of time making things work

 

[LIVELY]

i believe he got a good deal on it and it was working when removed. i will most likely just put it on the market for someones bigger shop.
thanks alot for the info. LIVELY

 

[Norcal]

A VFD will not work for a hoist, one would have to bypass all the factory controls on the hoist & that would not be a good idea, a RPC is a good choice.

 

[OldCarGuy]

Besides bypassing the factory pendulum controls. A second set of wires would be needed to wire up the hoists' magnetic brake. After a week trying to get my three phase Dayton chain fall to run on a Teco brand RFC. A factory engineer told me it was impracticable if not impossible. I simply added a circuit and ran it off my rotary phase converters... what I should have done in the first place!

 

[sams]

how about just buying a single phase motor? some of those hoists use a simple motor mount with one pulley and that's it

 

[comedyman809]

sounds too complex for somethingso simple, just sell it, and get the correct single phase.

 

[bobadame]

A static phase converter will run that motor for under $100.
take a look at: www.use-enco.com/CGI/INLMK3?PMK0NO=1126789

 

[OldCarGuy]

how about just buying a single phase motor? some of those hoists use a simple motor mount with one pulley and that's it

The motor is specifically designed for that Dayton hoist. You'll have to go to Grainger's to purchase a replacement single Phase motor. And it'll cost more then a rotary phase converter.

A static phase converter will run that motor for under $100.
take a look at: www.use-enco.com/CGI/INLMK3?PMK0NO=1126789

A static phase converter wouldn't be a good solution either. They do not produce instant three-phase power. And take a second or two to generate the third leg to start the motor. Once running the motor is left running on two of the three winding. Thus the motor's output is 2/3rds of nameplate HP. This will overheat and burnout the motor if its' under full load. A static converter will not start a motor under full load. Hence will not work on air compressors and hoists...

.

 

[Charles (in GA)]

I frequently see three phase hoists on CL in Atlanta. They are always for sale for a reason, no way to operate them. If you are in a fixed enviroment (bridge crane or jib crane) and have other three phase equipment, than supplying power to one is a simple task. But if it is the only three phase equipment you have and plan to move it around (portable gantry crane, outdoors on a oak tree limb, or whatever) then three phase is relatively impracticable.

As OldCarGuy noted, and if you've ever looked at one, these hoists have custom designed, integrated motors with multi-speed controls in many cases, and powering them with anything other than what they were designed to be powered on (real power company three phase or RPC generated power) is not possible.

Charles

 

[BoydS]

Take a look at the motor data plate. Send that info to the mfg and ask them the question.