Electric motor single and 3 phase options?

[Benn]

Evening all

got this motor currently wired up for 3phase but it says about running on single phase ,does anybody know from these photos if you can change cable and run it single phase?
To be honest i never knew you could,

cheers

 

[jorgenbg]

Im no expert, but thats a 3 phase only motor. 230/400v. Star/delta. As you probably know.

 

[Servac]

Its not single phase, its dual voltage, which means it can run on 230v 3 phase or 400v 3 phase. You could run it from a single phase supply using a variable speed drive wired as 230v single phase.

 

[TechWise]

As above, it is a three phase motor, which is very different in its construction to a single phase motor. The best option here is to buy a variable speed drive to convert your single phase to three phase. What are you trying to achieve overall? Do you not have a three-phase supply and you're trying to use this machine?

 

[Benn]

Its a motor for a dust extractor ,
I have static transwave converter and i have other 3 phase machines i would need to run at same time as the extractor,
I either spend out and get rotary transwave converter, or try get round using this motor
Or get a single phase motor for the dust extractor
But im dubious i can find the exact spec single phase motor,

 

[TechWise]

Three phase will probably be better at that sort of power rating I would think. A variable frequency drive will give you more control as well.

 

[Benn]

Are variable frequency drive reliable?and easy to Install?
Ive never had any fitted or seen one in action.

 

[sjt01]

Use a single phase inverter which gives 230v 3 phase out https://inverterdrive.com/group/AC-Inverter-Drives-230V/

 

[Deutzdx3]

Buy one of these, wire this into 16a single phase plug. Change the tabs on the motor to 230v and run the extractor from this and the other machine from your static converter. Job done. They are really good bits of kit.

 

[defender]

Just change the motor for a single phase , it will need a starter but single phase will run 4 kw ok

 

[Thick Farmer]

Its a motor for a dust extractor ,
I have static transwave converter and i have other 3 phase machines i would need to run at same time as the extractor,
I either spend out and get rotary transwave converter, or try get round using this motor
Or get a single phase motor for the dust extractor
But im dubious i can find the exact spec single phase motor,

Ive got a static trans wave converter and have found I can run multiple motors at the same time as long as I start the largest one first and keep it running.

 

[Benn]

Ive got a static trans wave converter and have found I can run multiple motors at the same time as long as I start the largest one first and keep it running.

Somebody else suggested this too,
Do you run both motors within the max multi motor kw stated on the box?
My transwave is near the stated max kw ,running one machine,it be near double the stated kw if had dust extractor and machine going,
Rotary transwave ,ive been told by transwave would be way to go but its nearly £3000 for the size i need,
I would like to find cheaper alternative for now to see if this extractor works well enough with machines and that i will keep It long term before spending that sort of money,

 

[Thick Farmer]

Somebody else suggested this too,
Do you run both motors within the max multi motor kw stated on the box?
My transwave is near the stated max kw ,running one machine,it be near double the stated kw if had dust extractor and machine going,
Rotary transwave ,ive been told by transwave would be way to go but its nearly £3000 for the size i need,
I would like to find cheaper alternative for now to see if this extractor works well enough with machines and that i will keep It long term before spending that sort of money,

I found a motor that was maximum size for the transwave and run it first - it doesn't actually do anything. I can then turn the others on and off as and when required. In total they over the capacity of the transwave but once the first motor is running it doesn't matter.

 

[Benn]

Just dragging this thread back up,
Fitted an inverter to the motor ,whoch is powering a dust extractor
and its running ,but it seems the motor is running slower,the bags on a dust extractor will inflate and feel ridged,but the bags are inflated but not as they should.

can you alter the rpm of the motor using an inverter?
I wonder if its the programme set up of the inverter that is the issues,and the motor is running at lower rpm.

Any body know how to correctly set up an inverter?I've tried reading the manual but i dont really understand most of it!

 

[Benn]

This is the inverter thats fitted

 

[Deutzdx3]

This is the inverter thats fitted

You should be able to increase it. Ideally put in all parameters of the motor into the different sections of the inverter. It’ll then work out what the minimum and maximum speed it can run the motor with the info you put in. Normally 50hz is standard. With the correct info input 65hz should be fine. Doesn’t look like an overly simple inverter. Some have a dial on the front to adjust easily.

 

[pycoed]

Check that the inverter is set for the number of poles in the motor (synchronous speed is 1400 rpm for a 4 pole motor & 2800 rpm for a 2 pole motor) This may be all you need to do, but I'd check carefully through all the parameters as suggested above.
If all is OK, you should just be able to dial up a faster speed on the inverter panel. Some come with a potentiometer built into the control panel to vary the speeds.
Lots on Youtube about VFDs if you are struggling to follow... I've just resurrected 2 old British drill presses with cheap VFD's (a real hassle to work these out with no meaningful manual) & also replaced the one on my mill which gave up the ghost after working faultlessly since 1996.

 

[aidan]

This is the inverter thats fitted

How much is an inverter like that £400 ?

 

[Benn]

It was around £350 ish ,
I cant remember exactly,
It was the cheapest option for the size of motor i needed to power.

 

[Servac]

Are you using a 400v 3 phase supply,and a 400v motor?