Motor difference - 230v TP or 400v TP.

[Rampage]

I'm building a new head for a milling machine using a three phase motor and VFD.
VFD's seem to be much cheaper for 230v rather than 400v, is there any disadvantage to running a motor at 230v TP than 400v TP?

I have a 400v three phase supply.

Thanks,

 

[Rampage]

Will using a motor as 230v TP give the same motor performance as using it at 400v TP?

 

[Knobhead]

Yes...

Why does a post have to be over 6 characters?

 

[Besoeker]

Ive re-read the OP who clearly says the use of a VFD hence Im confused why you asked where he was getting 230v 3PH from.... its clear that the VFD provides this.

Because 230V TP was mentioned in the opening post.
Why else??
No nit picking or tangents involved. And no need for you to be stroppy.

Anyway, the simple answer to the question is that if the motor is configured to be able to run at 230V and 400V there should be no difference in performance.

The usual arrangement is star for 400 V and delta for 230V. In both cases each winding gets 230V.

Here's a nameplate I had on my desk:

From a motor in our machine shop that had to be replaced.

 

[Darkwood]

Because 230V TP was mentioned in the opening post.
Why else??
No nit picking or tangents involved. And no need for you to be stroppy.

Anyway, the simple answer to the question is that if the motor is configured to be able to run at 230V and 400V there should be no difference in performance.

The usual arrangement is star for 400 V and delta for 230V. In both cases each winding gets 230V.

Here's a nameplate I had on my desk:

From a motor in our machine shop that had to be replaced.

Sorry Beseoker wasn't meant to sound stroppy as it does come across that way thats what you called beer fuelled reply (We need a drunk symbol on here me thinks) - just really meant to say I was confused as to the question you asked when he answered it but hey ho lets stop bouncing off each other over a minor point ....

@ the OP -The only issue with generating 3ph 230v from a 1ph VFD input is the size of the load on the 1ph supply can be quite high as oppose to the balanced 3ph input from the more expensive 3ph in and out VFD.

 

[Besoeker]

Yes...

Why does a post have to be over 6 characters?

I think it's to avoid spam.

 

[telectrix]

DOESN'T WORK:

https://www.youtube.com/watch?v=anwy2MPT5RE

 

[Besoeker]

DOESN'T WORK:

OK
Maybe it's to try to avoid spam...

 

[Besoeker]

Sorry Beseoker wasn't meant to sound stroppy as it does come across that way thats what you called beer fuelled reply (We need a drunk symbol on here me thinks) - just really meant to say I was confused as to the question you asked when he answered it but hey ho lets stop bouncing off each other over a minor point ....

No problem.
Text isn't always the best mode of communication for making a point.

 

[DPG]

No problem.
Text isn't always the best mode of communication for making a point.

I'm going to try my next post via the medium of creative dance :stooge_curly: . Daz

 

[Besoeker]

I'm going to try my next post via the medium of creative dance :stooge_curly: . Daz

Ah. OK.
Good luck with the ballyhoo..........