Two Voltage/CCurrent Values on Motor

[pprendeville]

Motor Tags.doc - File Shared from Box.net - Free Online File Storage

Got a few queries about the info on the motor tagsin the pics in the attachment.
In the first one in the Voltage box, it has 220 Delta and 380 Star. Does this mean that when the motor is running in delta config, the voltage will be 220 and when it starts up initially in Star it will draw 380V? Similarly in the current box it has 2.1A and 1.2A. Same again?
Same story with the rest? Our instructor didn’t have time to explain to us last time out. He did mention something about one of the values having something to do with a US voltage/current. Can anyone enlighten me on this?

 

[Darkwood]

It sounds like (without checkig the link) you've got a dual voltage motor, the windings are only rated at 220v each so if you supply 3ph 220v (as in America) you would have to configure it into delta as only one winding exists between 2 phases at any point but in star you connect 400v as 2 windings seperate any two phases.

 

[Notsosmart]

Dark wood is correct

Have a look at the attached a lot of usefull information on motors in pdf form on this website

Marthinusen & Coutts are the leaders in the repair and rewinding of high voltage electric motors in Southern Africa. We also offer services such as balancing, testing, installation, refurbishment and quality certifications.

Go to the star-delta & dual voltage page then scroll to page 12 of the document.

 

[thepurple1]

The 220volt configuation would be used for a single phase to 3phase inverter

 

[shagg]

. He did mention something about one of the values having something to do with a US voltage/current. Can anyone enlighten me on this?

Hi I think your tutor is refering to the US supply that is set at 60 Hz.