1 phase 2 pole 400v pump wiring

[-Alma-]

Hello. How i should connect this 1 phase 2 pole 400v cooling pump? If i apply 1phase 230v and neutral it Will only growl and "spin" very very slowly.

Thank you for help.

 

[-Alma-]

Maybe L1 - N (230v-0) wiring is correct but is My starting capasitor Broken?

 

[davesparks]

If it is a 400V motor then it needs a 400V supply.

You wouldn't expect a 400V motor to work on a 230V supply!

 

[-Alma-]

If it is a 400V motor then it needs a 400V supply.

You wouldn't expect a 400V motor to work on a 230V supply!

I know that, but typeplate says 1 phase thats whats confusing me. I measured My capasitor and its charging and decharging

 

[westward10]

You need to apply the voltage on the rating plate.

 

[-Alma-]

You need to apply the voltage on the rating plate.

Could you draw me wiring diagram? Thank you!

 

[westward10]

Do you have 400v available?

 

[James]

I know that, but typeplate says 1 phase thats whats confusing me. I measured My capasitor and its charging and decharging

single phase 400v is what the name plate is stating as the supply required.

this could be provided by a step up transformer if you only have 230v single phase available.
alternatively it is probably easier to get a 230v motor instead.

 

[pc1966]

Typically 400V is obtained between two phases of a 3-phase supply (nominal 400V L-L /230V L-N) which is common thorough the UK & EU for larger installations.

What is the motor for, and why did you get a 400V one?

 

[-Alma-]

Typically 400V is obtained between two phases of a 3-phase supply (nominal 400V L-L /230V L-N) which is common thorough the UK & EU for larger installations.

What is the motor for, and why did you get a 400V one?

Its for pumping cooling liquid for bandsaw. It came with bandsaw but not working. It was installed ; L1 - L2. Now i rewired it L1 - L1 and now its working.

 

[westward10]

It works off 230v?

 

[pc1966]

Its for pumping cooling liquid for bandsaw. It came with bandsaw but not working. It was installed ; L1 - L2. Now i rewired it L1 - L1 and now its working.

Have you verified that L1 - L2 - L3 are all OK and showing around 400V?

For it not to be working L1-L2 but now working on something else (I guess "L1 - L1" is a typo as that would be zero volts!) suggests L1-L2 was not 400V which on a 3P system is a fault.