Inverter 'on the wall'
Posted: Mon Apr 30, 2018 10:25 am
Good morning everyone,
I would like to ask a few question, hoping that it is not too profane because although I have some little theoretical notion from a practical point of view, I do not have much experience.
I have in my hobby multi-workshop with a single-phase 3 Kw-220 V power supply, different machines driven by three-phase 380 V motors converted with capacitors for 220 V two-phase operation.
Everything works except for a gigantic as ancient (1951) band saw 2.6 Kw that I can’t get running due lack of starting torque in two-phase mode.
To solve this problem I was thinking in using a single-phase 220V/three-phase 380V 3 Kw inverter;
• Will it possibly work?
However, it would be very convenient for me to be able to also operate the other three-phase machines by the same inverter, removing the capacitors from the motors and returning them to three-phase operation.
Particularly on an equally old and big wood lathe would be enormously useful the speed adjustment obtainable from the inverter.
At this point I ask myself:
• is it possible to place the inverter 'on the wall' and permanently connect the different three-phase motor using cables from 4 to 20 feet?
• Is it possible to use more than one motor at the same time?
• Are the inverters usually equipped with self-protection against overloads or used in that way am I likely to burn them?
Finally, a possible advice on what to buy.
Thanks a lot to everyone's attention.
I would like to ask a few question, hoping that it is not too profane because although I have some little theoretical notion from a practical point of view, I do not have much experience.
I have in my hobby multi-workshop with a single-phase 3 Kw-220 V power supply, different machines driven by three-phase 380 V motors converted with capacitors for 220 V two-phase operation.
Everything works except for a gigantic as ancient (1951) band saw 2.6 Kw that I can’t get running due lack of starting torque in two-phase mode.
To solve this problem I was thinking in using a single-phase 220V/three-phase 380V 3 Kw inverter;
• Will it possibly work?
However, it would be very convenient for me to be able to also operate the other three-phase machines by the same inverter, removing the capacitors from the motors and returning them to three-phase operation.
Particularly on an equally old and big wood lathe would be enormously useful the speed adjustment obtainable from the inverter.
At this point I ask myself:
• is it possible to place the inverter 'on the wall' and permanently connect the different three-phase motor using cables from 4 to 20 feet?
• Is it possible to use more than one motor at the same time?
• Are the inverters usually equipped with self-protection against overloads or used in that way am I likely to burn them?
Finally, a possible advice on what to buy.
Thanks a lot to everyone's attention.