3 phase motor monitoring

[xJAyx]

Can a single phase current monitor be used to determine if a 3 phase motor is running? I don't need an analog indication, only running or not running. Under normal conditions, I am confident that the single phase current switch will be fine, but my concern comes if I blow a fuse on one phase. It's an old panel so the motor is fused individually on each leg.
What will happen if I blow one phase? Will the other phases blow from the load change?

 

[LaffeyDD724]

I will try this again here is the URL.

http://www.squared.com/us/products/...88A85256CB60056D979/$file/phaselossrelays.htm

Tom

None of us is as smart as all of us.

 

[LaffeyDD724]

Just copy and paste the url in the address bar and it will work. I tried it and it is OK I must not have hi-lighted all of it when it was copied.
Tom

None of us is as smart as all of us.

 

[ScottyUK]

Tom,

It's a limitation of how the site processes HTML. When it encounters a $ symbol it truncates the address at that point. I'm sure folks can figure it out from what you posted.


----------------------------------

If we learn from our mistakes I'm getting a great education!

 

[LaffeyDD724]

Thanks Scotty, I thought that I had goofed.
Tom

None of us is as smart as all of us.