380v machine on UK 3 phase 1

[Eren1999]

Hello

I know this has been asked before but as a total novice can someone please give me some advice.

We have purchased a machine from Europe and I would like to know if I can run it on our 3 phase circuit as is or if I would need a transformer?

We will be using this machine sparingly, probably around 3 hours per week over 3 sessions.

If we do need a step down transformer can anyone point me in the right direction as initial enquiries with the main electrical distributors have proved fruitless.

We are based in Kent so if any experts here are local please do not hesitate to get in touch.

I attach an image of the plate for your consideration.

 

[7anoter4]

The motor will run well if the voltage will be ±5%[400 V-361V]
According with IEC 60034-1 Figure 12 – Voltage and frequency limits for motors
if the supply voltage will be not more than 418 V and frequency not less than 50 Hz the motor performance will be as per zone B (outside zone A) and as per Table 3 − Primary functions of machines the output torque will be different than rated.
If the utilization voltage range is +10 %, [as per IEC 60038] of 400 V [440V ] you need a transformer of 420/380 V.
If the motor will not run in the supply transformer not loaded hours when the voltage will not be more than 400 V the motor will function well.

 

[edison123]

Have you measured the actual supply voltage in your facility? A 380 V motor will run comfortably at 400 V.

It will run hotter with a poorer PF (and better torque) at 415 V but given your low duty cycle, it should be ok.

If it is more than 415 V, then I recommend a rewind of the motor for your actual supply voltage.

Muthu

http://www.edison.co.in

 

[LittleInch]

This is informative I think.

https://www.se.com/uk/en/faqs/FA163890/

It's the same discussion recently on 220 or 240V and the meaningless 230V supply / equipment.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[waross]

You may drop the voltage with auto-transformers in open delta.

Bill
--------------------
"Why not the best?"
Jimmy Carter

 

[Eren1999]

Okay thank you everyone

I contacted the manufacturer and they advised that the motor should have the tolerance to run okay.

We hooked it the day after my original post and I have used it as originally described with no issues at all so all seems okay for now

I figured in the end that a replacement motor would probably cost around the same as a transformer so going to run this machine as is then if and when the motor fails I will replace it with a new UK one.

 

[jraef]

We will be using this machine sparingly, probably around 3 hours per week over 3 sessions.

With that low of a duty cycle, you may not be around to see its demise...


" We are all here on earth to help others; what on earth the others are here for I don't know." -- W. H. Auden

 

[7anoter4]

Very good !

 

[ScottyUK]

That's an unusual - i.e. not a preferred - power rating so it may well be a custom motor for a specific purpose. I can't see any frame designation on the maker's plate, but based on the shaft speed and power rating I'd expect it to be on a 132 frame. Did the manufacturer quote a price for a new motor?

Any ideas how old it is? Since harmonisation was imposed European motors are supposed to be able to operate over the range 360V - 440V, although many are unhappy at the extremes of the range: old British 415V motors tend to run at high slip and high line currents, while old European 380V motors tend to run on the edge of magnetic saturation with high line currents. Schneider produced this little explanation:

https://www.se.com/uk/en/faqs/FA163890/