3 Phase Bandsaw.

[Clive P]

HI,

Just about to post and I noticed a similar thread, anyway here goes. Not worked on motors or controls for some time so after some advice.
A friend of mine has just got his hands on a 3Ph Startrite 352 Bandsaw, yes; you're right only a single Phase supply available.
At the moment it is configured with a ASEA motor
3Ph 50Hz.
0.75KW / 1HP.
380/420 Star. 1.8A
220/240 Delta. 3.1A.
2850rpm.

For speed control it has an Invertek Optidrive.

My question is should I use a 3Ph Inverter with variable speed drive ( similar to Transwave ) and do away with the Optidrive ( was thinking this would not operate correctly within parameters on a single to 3Ph conversion ) or use a Single Phase motor where I would have the problem of speed control.

Secondly would the Converter need to be rated higher than 1HP due to efficiencies etc?

Any thoughts greatly appreciated.

Regards.

 

[stef]

Hi Clive,
frankly it would be ideal to have a higher rated drive but it is not necessary, can't see any reason why it should not work. Depends what material you are want to cut you might need the 'bit of extra'. Ideally the variable speed drive is a better solution, saves you replacing the motor and the problem with the speed control. Saying that, some years ago I used a single to three phase inverter on a pillar drill and it did work OK.

 

[joel89]

why dont you go for a schneider altivar 12, it is a single phase 240v input and 3 phase output with sizes up to 4kw output. ive used one of these on a small conveyor and works well

Buy altivar 12 online from RS Components

 

[Clive P]

Hi,

Thanks Joel I'll take a look.

Regards.

 

[Darkwood]

If you decide to swap your inverter for a 1ph-3ph be cautious to the existing control voltage set-up and if it had transformers etc associated with the 3ph i was designed for also ensure the motor is configured for 230 delta and not 415 star if your output of your inverter is 230v...

It sometimes isn't as simple as swap it for a 1 to 3ph.

 

[Bobster]

Edit posted in the wrong thread...

 

[Darkwood]

Edit posted in the wrong thread...

And the verdict is:grouphug:...........:dunce: lol

 

[RichInTN]

So, let's say I buy a 5HP 3PH 10 inch Table saw --- (Motor Plate in Image) I am a DYI'er and would not attempt to do a conversion myself -- My thought is to visit a motor repair shop and have them give me the most appropriate method to be able to run the heavy duty saw on a 240 volt Single Phase system in my home wood shop. Then I would have an qualified electrician make the conversion for me with the components recommended by the motor shop owner.

What say the forum members?