3 Phase Ramp - Will it work ?

[Niscars]

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&rd=1&item=7960583152&ssPageName=STRK:MEWA:IT

3 Phase ramp - Can someone tell me if this will work on normal domestic supply please. If not, what (if anything) is needed to get it to work. Sorry if this is a really dumb question.

Thanks.

 

[breezer]

as it needs 3 phase to work, the average house has only single phase, so,no it will not work.

It will cost an absolute fortune to try and get it to work on single phase

 

[Niscars]

Breezer,

Many thanks - Back to searching ebay then !

 

[Stoday]

You can have a 3-phase supply, but you will have to pay your Distribution Network Operator's costs of changing your connection.

 

[breezer]

still cost a fortune

 

[kendor]

you can buy single to three phase convertors and get them cheap on ebay aswell just make sure that you know the load requirements which as it is a hydraulic machine should hopefully not be too high.
There is one on there at this moment for £575 but i have seen them much cheaper so hold out:
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&category=40003&item=3867649239&rd=1&ssPageName=WD1V

certainly a cheaper route than getting a three phase supply put in just for one machine.

 

[crystal ball]

You could use an inverter drive to run it, single phase input three phase output, a 2.2kw drive will be about £400, maybe less if you shop around

 

[mapj1]

Don't overlook the possibility of fitting a single phase motor of the same HP rating in place of the maker's original, depending on the design this may or may not be practical.
If, and only if, the load is fairly constant (and for this it probably isn't) it is possible to spoof 3 phase from single phase with a capacitor (about 50 to 100uf/horse power) but the motor will be a bit underpowered, as it is getting 230V between one pair of phases, and 220v via a capacitor on the other, and unless you want to switch caps in and out as the load changes, this is not practical in cases like this, but I mention it for others who may be also needing 3 ph but for less stressful purposes. I have seen very cunning ones where a phase angle sensor was used to click in more or less capacitance with relays as required, but if this makes no sense, then I fear building one will be beyond you.
The other trick is to use the capacitor start as already described, and have an idler 3phase motor with a flywheel to acta as a motor-generator to level up the 3 phases.

Inverters are much cleaner, but the budget may well not stretch that far.
regards M.

 

[breezer]

good suggestions all, but i bet its bumping up the price too much

 

[softlad1971]

3 ton for a ramp is alot of weight. I would ask the power rating of the original motor to see if it is worth while to convert to single phase. Most single phase motors max out at 3hp.

 

[Porker]

When I was younger my father ran a three phase car ramp from a single phase supply using a solid state convertor. Can't remember the exact cost of the convertor but I think it was around £75. It ran fine. I think it was a 1 1/2 hp motor.

 

[toasty]

Some three phase motors will run on single phase with only a minor rewire and the addition of a capacitor.

Don't rule out the possibility that this motor is one of those.