Home > Archive > Electrical Engineering > August 2005 > RPM, Votage, Current or Time Delay Relays for capicitor start circuit









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Author RPM, Votage, Current or Time Delay Relays for capicitor start circuit
gtslabs

2005-08-18, 12:21 am

I am looking to finalize my rotary phase converter and am trying to
size up the disconnect relay for the capacitor start. My idler runs
about 18 amps with no load. It is a 15 hp 37 amp motor.
How do I size these relays? Do I need some special equipment for the
speed sensing relay?

Ignacio Simón Yarza

2005-08-18, 12:21 pm

I would recommend that you have a look at this article.
http://www.powerstandards.com/downl...%20Part%202.pdf
Best regards.
Ignacio Simón Yarza.
Mech & electronic-electrical engineer.

"gtslabs" <gts@nb.net> escribió en el mensaje
news:1124333166.357357.287440@g44g2000cwa.googlegroups.com...
>I am looking to finalize my rotary phase converter and am trying to
> size up the disconnect relay for the capacitor start. My idler runs
> about 18 amps with no load. It is a 15 hp 37 amp motor.
> How do I size these relays? Do I need some special equipment for the
> speed sensing relay?
>



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