Last time I use an inverter

[wizard]

Bought an inverter this year it was great until the other day when it lost a phase. Sent it back and kept asking if I had put a switch inline and did they program it and who installed it. They are going to send it back to the manufactory but not sure if they will have any luck as one of my motors may have blown it up. It will cost £250.00 to repair it or £400.00 to replace it. its 400v and about 5HP so its not a cheap one. So it’s back to single phase.

 

[deema]

Well, if you bought the inverter less that 1 year ago, you are in luck. If it's less than a year it's for the manufacturer / company you bought the inverter from to prove that the inverter was not faulty rather than for you to prove it was faulty. This may sound a little irrelevant, but its key. They are responsible for putting you back into the position you were I. Before the inverter failed. If it's caused a problem with the motor, it's down to them to repair.

What to do, well look on citizen advise web site for exact details, but, in principle you need to write to them stating your case, what has been damaged and what you want doing about it, you need to be reasonable and give then a time to resolve the issue. If you have done this and get no joy, take out a small claim through the online service. It's very easy, cheap and you don't need a solicitor. Its biased towards the consumer and s such, it's very easy to follow. There is lots of online advise in the small claims web site. It may take a while, but you are from what you have stated highly likely to get a satisfactory result.

 

[wizard]

After looking into this, if and a big if, I get a replacement the first thing I will do is sell it to try and get some of my money back.
If you put a switch between the inverter and the motor and you switch the motor off with the inverter running the inverter blows up (I knew this) so if there was a fuse between the motor and the inverter and the fuse went the inverter would blow up. If there is a short on the motor the inverter is then the fuse and blows up, they are made this way.
The motor I was using was at least fifty years old and an internal wire had rotted and touched the casing. This caused one of the circuit boards to blow, these boards are £120.00 each and cost £100.00 to fit as its two hours work.
The supplier I bought it from is sending it back, they may not check it and replace it but if they take it apart and find it has been shorted out they will bin it.
If I get a replacement I will be very lucky.
Warranty covers faulty parts.
So if you are going to use an inverter do not use an old or untested motor.

 

[Dangermouse]

A lesson to us all I think !

 

[Dissolve]

I've just purchased a Jaguar Cub inverter for my recent meddings purchase. Luckily it was only £80 and they have decent warranties by the sounds of things!, but this is very good to know. I've tested the motor on a 3phase supply previously so I know it works flawlessly (at the moment) but given the price of a single phase replacement is around the £160 mark I'm happy to see how I go with the £80 inverter.

 

[wizard]

So i have just replaced the 415v motor in my forge with a single phase motor, taken the 415v motor out of my union graduate lathe and rewired for 240v 3 phase and ordered a cheap inverter, then this morning what i thought was the new inverter arrived. Wrong they have now replaced the 415v one.
So i now have a £500.00 240v to 415 inverter 3hp
and a £150.00 240v to 240v 3 phase inverter 1hp