I've been left puzzled by what someone has told me, and I'm hoping someone can help me out with an explaination.
If a 3-Phase motor has a name plate with: 415v, 20A in Star, and it was running with nothing attached to it, I.e no shaft etc. Will it be running at 20A?
Just someone today told me it wouldn't as it didn't have a load on it, and the only way you would measure 20A would be with a full load.
To me this sounds like rubbish, as how can you say what a full load on the motor will be? It could be rotation a fan blade made from paper, or on the other extreme, a huge conveyor belt!!??
Any education for me would be great from you guys.
If a 3-Phase motor has a name plate with: 415v, 20A in Star, and it was running with nothing attached to it, I.e no shaft etc. Will it be running at 20A?
Just someone today told me it wouldn't as it didn't have a load on it, and the only way you would measure 20A would be with a full load.
To me this sounds like rubbish, as how can you say what a full load on the motor will be? It could be rotation a fan blade made from paper, or on the other extreme, a huge conveyor belt!!??
Any education for me would be great from you guys.