3 phase motor

[sids]

Hi all
Have a 3 phase motor 0.37kw for a small convayor belt, wired up in delta. Does this need a star/delta starter or would it be ok for a DOL starter?

 

[lewlec]

hi

is the motor dual voltage? ie 230/400v?

 

[sids]

Hi Gary

yes the motor is dual voltage

Thanks

 

[lewlec]

hi

whats the rating 230/400 or 400/600?

 

[sids]

hi
230/400v

 

[Hawk81]

for this motor to work with a dol starter it will have to be wired in star. To work wired in delta you will need an inverter/ variable speed drive.

 

[lewlec]

hi

if you want to connect it to a d.o.l i would change the windings to star, i imagine if the motor is connected in delta its been used on a single to three phase inverter.
hope this helps

regards
gary.

hawk81 beet me to it

 

[sids]

Hi
The motor has 9 connections one of them being the earth. May be the extra 2 connectins would be for a variable speed control. which didnt' come with the motor.

Thanks

 

[lewlec]

hi

two of them are probably overtemprature volt free contacts, you will need to test to see which ones are which.

regards
gary

 

[pmac10]

that sounds odd, got a picture??
maybe connections for thermistor monitoring

 

[cadman]

I aggree with all that Gary has said 100%. Many electrician has fallen foul of connecting 400volts accross a 230 volt winding. That could have well been an expensive mistake to have made; it was a good job you had the sense to ask this question on the forum.

Steve..

 

[sids]

Hi

Will photo when I'm next down there.

Thanks

 

[thepurple1]

Hi all
Have a 3 phase motor 0.37kw for a small convayor belt, wired up in delta. Does this need a star/delta starter or would it be ok for a DOL starter?

A 0.37Kw motor works out approx Flc 1.2 Amps it would be ok for it to be D.O.L as for wiring it in star or delta it depends on the motor manufacturer. You shouldn't need an inverter unless you want it variable speed