phase convertor

[cash4tea]

hi ive a quick question about a single phase to 3 phase convertor a neighbour of mine purchased.
Not 100% on the details but from what i gather the unit is a 15hp motor its going to be supplying some sort of a 3ph bearing press which has a 3.5kw motor on it. In his line of work this machine would not get much use just the odd job.
he has a socket down the end of his shed which he uses for a single phase welder it is protected by a 20a mcb.
Now my question is would this socket be sufficient to run this convertor or would it more likely trip out on power up?
thanks in advance

 

[Top Cat]

Not really that knowledgeable about 3 phase converters but if it is run off a plug top then it is protected by 13 Amp fuse so you can't overload it. It may trip the 20A breaker, if you do your calculations it may be OK to put it on a C type breaker.

 

[Marvo]

15hp motor its going to be supplying some sort of a 3ph bearing press which has a 3.5kw motor on it.

The specs don't sound right, 15HP would be approx an 11kW motor. You won't get a single to 3-phase inverter drive of this size.
3.5 kW is also an unusual size for a motor, it might be worth a closer look to check the power requirements.

 

[cash4tea]

thanks for the replys, yes will be taking another look tomorrow to get everything straight
here is a link to the actual converter Phase Converters, Ireland, Rotary Phase Convertors fitted and serviced by SF Phase Converters, Wexford, Ireland appears to be 15hp not to up on these but would it technically not be drawing 2/3 of the power when it is being run from single phase?
and as for plug top it would be an industrial type plug so maybe a 32a fuse?