Hydraulic hose crimper 3phase motor to run on single phase supply

[David the spud man]

Hi I have a unilfex 3 phase hydraulic hose crimper I'm looking to run it on a single phase supply its a 3.5kw motor with 5 wires l1 l2 l3 N G im wondering would a vfd work for me and is there anything specific I would need to look for thanks

 

[john432]

I've been looking for a similar machine, could the motor be replaced by a single.phase 240 v motor?

 

[David the spud man]

I've been looking for a similar machine, could the motor be replaced by a single.phase 240 v motor?

It could id say but a vfd would be the cheapest option i would think

 

[john432]

How do they work?press the power on button, and the motor runs turning the hydraulic pump. Then other switches control the closing and opening of the press with electric ly controlled spool valves (solenoids) with a stop sensor overriding the closure once it reaches the preset setting. So the motor doesn't have to start under a heavy load?

 

[David the spud man]

How do they work?press the power on button, and the motor runs turning the hydraulic pump. Then other switches control the closing and opening of the press with electric ly controlled spool valves (solenoids) with a stop sensor overriding the closure once it reaches the preset setting. So the motor doesn't have to start under a heavy load?

Pretty much ya

 

[Colliedog]

I have a digital inverter or vfd on my lathe. It works really well but I don’t know enough about them to advise.

 

[Exfarmer]

That is going to need some fairly big inverter and I guess something like a minimum of 50amp feed.
This is going on a 3.5Kw motor, would draw 14.5 amps continuous and 3 times that on starting.
I am no electrician though and others may say that it may need substantially more or less

 

[Exfarmer]

That is going to need some fairly big inverter and I guess something like a minimum of 50amp feed.
This is going on a 3.5Kw motor, would draw 14.5 amps continuous and 3 times that on starting.
I am no electrician though and others may say that it may need substantially more or less

Just seen @sjt01 comments on the other thread, I would definitely trust his judgement

 

[Wisconsonian]

The motor will start and run with a start capacitor, run capacitor, and a start relay or manual starting switch. No idea if it will meet your high standards though. Nothing to be gained from a VFD that I can see. There are commercial static phase converters that work just fine also, more likely to be "approved".

 

[davidroberts30]

Hi I have a unilfex 3 phase hydraulic hose crimper I'm looking to run it on a single phase supply its a 3.5kw motor with 5 wires l1 l2 l3 N G im wondering would a vfd work for me and is there anything specific I would need to look for thanks

Make sure the wiring into the motor is in the 240v 3ph setting and get a inverter
Same as I did on my lathe