three phase transformer wiring

[FattyJr]

GIVE Gemco a ring before you do yourself some damage

Rang Gemco and they are a typical big british company. As in NOT INTERESTED unless you have a big chequebook and want new equipment. They don't want to discuss equipment that they used to service even tho I asked them to service them when I have the electrical side sorted out. Might as well smash the original motors off and control circuits, then run a nice and simple two new individual motors and make up a new control box.

That's why I prefer to deal with american companies. Will ALWAYS try and help you out even if they don't sell you something

 

[mogga]

Maybe guy who sold you the set up hasnt given you the full set up ie Transformers control box OR he may have been having the same problem as you and has sold it to another mug >>You ( no offence BTW just banter)

 

[FattyJr]

Was commercial clearance and sold in lot numbers so you buy lot number XX as seen

Tis a bit of a bind, but I can afford to spend a little on the lifts because didn't pay a lot for them and they are ideal for what I need

 

[Knobhead]

A 4KVA 415/110V 3Ph transformer will give a bit of headroom for starting. The actual load is a tad over 2KVA but you need that bit extra for stating. That’s assuming both motors run together.

 

[FattyJr]

A 4KVA 415/110V 3Ph transformer will give a bit of headroom for starting. The actual load is a tad over 2KVA but you need that bit extra for stating. That’s assuming both motors run together.

You are correct tony. take a look at this pic. You can use these lifts in pairs, fours, sixes or eights. The power runs into one main control box then there is a link cable between each column. I have an early set where the spindles are drove by a chain and the motor hangs out the back inline with the column.

Still debating if I need 415v transformers or 230v transformers. can't get head straight due to hospital runs and 6 border collie pups biting my ankles

 

[vaughant]

Personally I'd swap to two 415 v 3 phase motors which I'm sure would be easy enough and sort the control out accordingly,if you ever go to sell it then,it's worth a lot more money as well as it's just plug in.
Where are you in the country?I maybe able to get you the motors from obsolete stuff we've got lying around where I work?

 

[vaughant]

Just been thinking about this again,definitely worth swapping to 415v IMO,as I'm sure at such low currents as the motors look tiny that you shouldn't even need to upgrade your cables and switchgear.
There's a good chance (but check) that the control circuit uses 110v stuff so a simple 240/110v transformer should sort that,you could use the phase&neutral off one of your incoming phases to get you 240,as your already on a 5 pin plug it would feed back through that.
Just a thought.

 

[FattyJr]

Personally I'd swap to two 415 v 3 phase motors which I'm sure would be easy enough and sort the control out accordingly,if you ever go to sell it then,it's worth a lot more money as well as it's just plug in.
Where are you in the country?I maybe able to get you the motors from obsolete stuff we've got lying around where I work?

Thanks for the offer. May have to look into that. These lifts are not going to be used that much as I already have a set of 3 ton scissor lifts in the garage but they are just too small for my truck. Truck weighs 3.6 ton confirmed by the scrap weigh bridge. All up weight with empty trailer (3 way tipper,I built) is 4.5 ton

Main problem I can see with motor change is I think the reduction gearbox on the nose of the motor is part of the motor. I am not 100% sure, I think i will have to drop a motor off and have a look.

 

[FattyJr]

 

[netblindpaul]

If you are working in a business venture it is doubtful that you can modify this machine and still comply with statute law.
Also, the motors are 110V for a reason as you have trailing flexes between columns, I see many of these in commercial vehicle garages.
They are this way for a reason.
Is the "machine" CE marked?
If so then to comply with the law you cannot modify it without re-CE marking it.
Mind looking at tha control box I doubt is is CE marked as it is such a shambles!
It may do though, on the face of it at least the colour codes seem correct.
You need to sort out the supply side to comply with the law unless you are not bothered.

 

[FattyJr]

If you are working in a business venture it is doubtful that you can modify this machine and still comply with statute law.
Also, the motors are 110V for a reason as you have trailing flexes between columns, I see many of these in commercial vehicle garages.
They are this way for a reason.
Is the "machine" CE marked?
If so then to comply with the law you cannot modify it without re-CE marking it.
Mind looking at tha control box I doubt is is CE marked as it is such a shambles!
It may do though, on the face of it at least the colour codes seem correct.
You need to sort out the supply side to comply with the law unless you are not bothered.

I can't see no CE markings anywhere.

I had a feeling the machine was 110v due to the mobile nature of the machine. I would rather try and work with what is already there as I can't see any reason why it shouldn't work. Like you say, I could just bodge something together and make it work, But I am not that kind of person. Would rather do it and do it once. As I said before, I am only going to be using the lift once in a while for my own truck because my scissor lifts are not rated for 3.6 ton. I am planning on doing this with my lifts



If you have seen these in the field, Can you tell me how they did it? Did they have a transformer on the wall ???

 

[silver surfer]

Do you know what damage has been done with applying 400 Volts?

 

[FattyJr]

Do you know what damage has been done with applying 400 Volts?

Yes, Both sets of breakers blew. The set in the garage distribution board and the breakers in the control box. Wiring has been checked and everything is good to go.

 

[FattyJr]

Well, I'm biting the bullet and going with my gut feeling. I am pulling the motors and control panels and proceeding to throw them in the bin. Going to convert to a nice and simple standard 415v set up.

Only problem I foresee is the nose of the motors are part of the reduction gearboxes. I have pulled one motor off and by the looks of it the motor shaft machined with the gear for the reduction box.

I have a plan what I am going to do and might involve a few hrs in the machine shop to sort it, but I'll sort it.

I will be starting a new thread regarding the control panels and I am in two minds on how to do it.

 

[netblindpaul]

I have not had chance to check the guy I know with s similar lift.

However, if you are going down this road then you must understand that it is doubtful that the machine can ever legitimately be used in a commercial undertaking of any sort unless you design it in compliance with the relevant standards, which will almost certainly call for 110V ph-ph motors...

What goes around comes around.

Why did you not just buy a transformer?