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3 phase converter

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dalbuie

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  • Name: David Black
3 phase converter
« on: May 31, 2012, 11:31:51 AM »
I've recently purchased a 3 phase, 3HP, Laycock ramp.

I borrowed a friends converter which works great without any car on it but as soon as a load goes on the ramp won't move - due to the ramp being 3HP and the converter 2HP.

So I'm looking for a 3HP 415V converter and have seen this one - http://www.machinemart.co.uk/shop/product/details/pc-40-3-5hp-phase-converter.

Anyone used this one, any other recommendations, or anyone have one for sale?

Cheers
« Last Edit: May 31, 2012, 11:34:16 AM by dalbuie »
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allyipod

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  • Name: Ally Conlon
Re: 3 phase converter
« Reply #1 on: May 31, 2012, 04:51:34 PM »
You will need to be carefull as the start up curent will be a lot larger. ie convertor will not be able to give enough oomph even at the rated 3hp.
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piper5

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Re: 3 phase converter
« Reply #2 on: May 31, 2012, 05:40:41 PM »
would it not be cheaper to buy the correct single phase motor at that price?
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Navigator

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  • Name: Stuart Clink
Re: 3 phase converter
« Reply #3 on: May 31, 2012, 11:11:05 PM »
Read the manual!  It contains the following text

WARNING - THESE CONVERTERS ARE NOT SUITABLE FOR USE WITH CAR HOISTS, COMPRESSORS & VACUUM PUMPS DUE TO THEIR HIGH START UP LOADS.

back to the drawing board!
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dalbuie

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  • Name: David Black
Re: 3 phase converter
« Reply #4 on: May 31, 2012, 11:13:42 PM »
Thanks.

I'm speaking to company down south that supplied a digital inverter to a friend with a 3HP ramp and it works really well. I'm looking for a single phase motor at the same time - but they aren't easy to get.
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Graeme

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Re: 3 phase converter
« Reply #5 on: June 01, 2012, 08:50:20 AM »
machine mart have them
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dalbuie

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  • Name: David Black
Re: 3 phase converter
« Reply #6 on: June 01, 2012, 09:22:07 AM »
I've also found this supplier

http://www.ebay.co.uk/itm/Car-Lift-Hoist-Ramp-Motor-Switch-convert-single-phase-Also-3-phase-/110513297638?pt=UK_Lifting_Moving_Equipment&hash=item19bb1b18e6#ht_551wt_927

So may try to change it to a single phase motor which looks like it may be the cheeper option.
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3 coops

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Re: 3 phase converter
« Reply #7 on: June 03, 2012, 08:30:12 PM »
I have a mate who is a bit of a whizz with stuff like this, he built a 'box' a few years ago to run a 3ph mill and a lathe on single phase, if you get stuck pm me and I will get hold of him.

cheers

coop
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