I found Transwave both helpful, and knowledgeable about the kit I was likely to have, and the problems I was hoping to solve. I would take photos of what you have, bare wires and all, and put yourself in their hands.

I have no connection with them except as a satisfied customer.

Cheers, Tim

I run my 3HP lathe from a Transwave static inverter, around 5 years now and no problems. I tried running my Bridgeport mill from the same inverter with no success, the machine would run for a few minutes and then cut out. Pressing a reset in the machine electrics box restored use for another few minutes. Transwave where very helpful even coming out to the house to try and sort the issue but could not resolve it. A cheap ebay Chinese VFD all wired and set up by a friend cured the problem and it now just runs from a 13amp plug.

It's coming from a 3 phase workshop.

240V three phase or 415V three phase? Start there.

Hi-ho. A standard 3-phase supply voltage is measured line to line, as a neutral may not be run to a load. The line-to-line voltage is 415V rms nominal. If you measure voltage from neutral to any one line it is 240V. 240 x square root of 3 is 415. So there is no difference.

I found this company very helpful.

Brian

https://www.drivesdirect.co.uk/

Brian yes when he can be bothered to return your call, weeks later—-.
4 inverters later still using it, shame about the others cost me £1600.

Chris nearly went that way Oct 2017 then looked at their exorbitant prices, so much so bought motor from Scotland, Mitsubishi from Gloucester region and pod with the extravagant £20 odd delivery and still saved £80 after paying £25 for a filter.
They do not and will not set the invertor up for use.

Hello Mick, in general term the answer to your question it is easy. You can buy an inverter which will do almost every thing you will aspire to do via ebay for around £100. Four of my ME friends bought Huangyang inverters and have been very happy with their purchases.

I'm no expert here, but helped them to modify their lathes motor wise and to fit inverters. As for locating replacement motors, all four picked up second hand motors very cheaply, which only needed the brass links moving to convert from Star to Delta a 5 minute job. All four bought Huangyang inverters and have been very happy with their purchase.

iI you go down the HuangYang VFD route I'll send you a copy of the program which I used. By the way, there is thingy on youtube which explain the programing Huangyang inverters very well. I'm sure members will be only to glad to help you in any way as required.

As the control voltages are very low, a home brew control box can be made. Unfortunately Maplin has now gone which was a good source for variable resistors and switches. However, ESR at Cullercoats up the North East coast, have almost the same range of components needed. John

I bought a Banggood A T1 inverter I need to increase the torque anyone know how to go about this ?? Regards Sandy.

As far as I'm aware no inverter measures torque, or directly controls it. So you can't increase it by just altering a parameter. The only thing that can be controlled is current which in simplified terms is proportional to torque. If you want more torque from a motor running at 50Hz then you will need to fit a bigger motor. If you want to boost torque at frequencies below 50Hz then you may be able to select a current profile that allows this, but be aware that it may hasten overheating of the motor.

I'm not familiar with Banggood inverters so I have no idea of the exact parameters that might need changing.

Andrew