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| munch90 Member Since: 26 Oct 2013 Location: guildford Posts: 3558  
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No , to get the amps needed the transformer would be the size of a car ( roughly ) or very big in otherwords
Depending on what your using winch for , get a battery and use a anderson connector then charge battery after use with normal battery charger what you using winch for ? |
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26th Mar 2015 7:47pm |
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| Cupboard Member Since: 21 Mar 2014 Location: Suffolk Posts: 2971  
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How long are you trying to run it for?
I've seen one in a lifeboat station that's just got a battery powering the winch, and a small charger charging the battery. the other option is one of the large mains powered battery charger/jump starter units. There are ones designed for trucks that will put out that sort of power, I know Sealey do some three phase ones, but this sort of thing may get you somewhere near where you need to go: https://www.machinemart.co.uk/shop/product/details/charger-2 I'd still put a battery in there too. A 3.8kW winch won't always be drawing 3.8kW but when you are, that's about 300A. It also is unlikely to be rated to 3.8kW continuous. Have you thought about just using a mains winch/hoist? And please note the difference  |
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26th Mar 2015 8:26pm |
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| mrd1990 Member Since: 16 Aug 2012 Location: Wales Posts: 600  
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Any information on what you need it for? Will it be in a vehicle / permanently mounted somewhere? or free standing?
Not even domestic household mains sockets support that amount of electric, you are looking at around 340 amps at 12v and around 16 amps at 240v (max domestic socket is 13amp. Using just a transformer would require a 32 amp round commercial / Caravan style socket to be install on site and the transformer would be extremely expensive / Large. The cheapest setup would be a 100ah 12v battery and 1 or more 20amp chargers running from mains. 4 would give you 1min of winching for every 5 minutes of charging. 2 Chargers for 1min / 10min or 1 charger 1 / 20 etc.. |
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26th Mar 2015 8:28pm |
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| gumdrop Member Since: 16 Jan 2010 Location: North Yorkshire Posts: 126
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Thanks for the replies - using it to raise and lower the side of a 20ft container for a hair product roadshow - what's more the container is pink
 Think the best solution is either a 240v winch or use it with battery/charger set up, it will only be dropped and raised once a day. Cheers
Simon ------------------------- 50th D90 - my toy! Freelander SE Td4 3 door - local run around 1958 Series 1- Rag top! |
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26th Mar 2015 9:01pm |
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| Buz Member Since: 24 Jan 2014 Location: Forest of Dean Posts: 238 
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What about one of these?
https://www.machinemart.co.uk/shop/range/g...F6427F58A7 |
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26th Mar 2015 9:10pm |
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| martinfiattech Member Since: 13 Nov 2013 Location: leicester Posts: 422
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Wow, could you imagine the size / cost of the inverter to run that.
Looking at the at the power rating of your winch motor. It`s nearly twice the max power of your starter motor. Which is roughly 2 to 2.5 kw`s. My self I would get some good deep cycle batteries, with a large reserve capacity. And good thick cables. ( welding earth cables are good for high amps at low volts). Excuse the spelling I`am better with spanners and wires. |
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26th Mar 2015 9:14pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17455 
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Don't forget that a 240V 13A socket is incapable of supplying 3.8kW - it's more than 13A. A 16A socket might, depending on cable length and losses.
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26th Mar 2015 9:22pm |
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| JWL Member Since: 26 Oct 2011 Location: Hereford Posts: 3443 
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Could you not go hydraulic? Either winch wise or using rams. a hydraulic pump will provide more power with either a 12v pump or even a portable hydraulic power pack. There is even the possibility of using a hydraulic ram with a pulley on the end of the ram which will provide a winch type action, one end of the rope is fixed at the base of the ram and when you extend the ram it pulls the rope. This idea works on the same principle as a four post lift.
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26th Mar 2015 9:34pm |
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| Cupboard Member Since: 21 Mar 2014 Location: Suffolk Posts: 2971
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If it's only raising/lowering the side of a container, that's not too difficult so I'd be looking at one of the many mains powered hoists on the market.
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26th Mar 2015 9:55pm |
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