Japanese 3 Phase Wiring

[Kirkman]

Hi, I hoping someone can assist me. I’ve taken delivery of a control box from Japan, which is powered by 3 phase at 200v. The wires are red, black, white and green. Any ideas how or if I can wire this to make work in the UK via standard 240v or 110v please?

 

[Lucien Nunes]

Update: I misread your 200V as 100V and gave an unhelpful answer.

200V is standard Japanese 3-phase delta. Red - L1, White - L2, Black - L3, Green - earth.
Unless it can be internally re-configured into star and will accept 230V in place of 200, you will need a stepdown transformer from 400V (normal UK 3-phase voltage) to 200V.

What is it for and what is its power rating? Do you have any info from the manufacturers?

 

[Kirkman]

Update: I misread your 200V as 100V and gave an unhelpful answer.

200V is standard Japanese 3-phase delta. Red - L1, White - L2, Black - L3, Green - earth.
Unless it can be internally re-configured into star and will accept 230V in place of 200, you will need a stepdown transformer from 400V (normal UK 3-phase voltage) to 200V.

What is it for and what is its power rating? Do you have any info from the manufacturers?

Thanks, I upload some photos of the control box internals on Monday. The control box is powering a small rotating motor on small drilling machine.

 

[Lucien Nunes]

In your first post you mentioned operation from 230V. Do you have a 3-phase supply available? If not, just transforming down to 200V is not an option and a different strategy will be needed. It is possible that the control box will accept a single-phase input, if it contains an inverter / VFD. Otherwise, things start getting a little more complex.

Will stand by for your pics etc.

 

[Andy-1960]

You will also need to check to ensure the equipment you have taken delivery of is suitable for use on our 50hz supply. Japan does not have a standardised frequency some areas are 50hz, others are 60hz.

 

[Kirkman]

Hi, the supplier states I'll need a transformer that converts from 400v to 200v 3Phase and the control box runs 15kVA. I've attached some photos of the control box and the motor the control runs thereafter. May be it would be easier to control the motor directly in another way?

 

[James]

It looks like a new piece of equipment, will the machine manufacturer not supply a suitable transformer to run this?

 

[Lucien Nunes]

Are you sure it's 15kVA? There's a 1.5kW motor and you called it a 'small' drilling machine...

 

[Kirkman]

I’m they states it’s 15kVA for sure. The motor fits on to bespoke drill machine. They won’t supply a transformer as based in Japan! Looks like I’m lost!

 

[StephenRowley]

Any more marking on that VFD? It. Ay be able to fed 240v single or even 3 415v.

But you going to need to do some rewiring of the control scheme.