Farm Equipment - WF Gen Cutout

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WF Gen Cutout

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=46733
Printed Date: 31 Aug 2025 at 2:58pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: WF Gen Cutout

Posted By: BLee Mn
Subject: WF Gen Cutout
Date Posted: 05 Mar 2012 at 6:47pm

what activates the cutout on top of generator, I know RPM, but how does RPM activate it? just curious

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Cowboy UP

Replies:

Posted By: DanD
Date Posted: 05 Mar 2012 at 8:01pm

Inside the cutout is simply a set of spring loaded points. The spring normally holds them open. As the RPM increases, the voltage produced by the generator increases. Once the voltage increases enough, a small electromagnet pulls the points closed against the force of the spring. When the points are closed, the generator is connected to the battery and the rest of the electrical system. Slow down, voltage decreases, the electromagnet is too weak to hold the points closed, so they open and the generator is isolated from the rest of the system. A voltage regulator has an identical section in it that does the same job. Both the cutout or a voltage regulator must be grounded to the tractor frame in order to work.

Posted By: BLee Mn
Date Posted: 05 Mar 2012 at 9:29pm

thanx Dan

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Cowboy UP