Does any one know of a simple inline overvoltage control that can be installed in the alternator power lead.  I have an internal regulator, alternator and the overvoltage units at ACS are part of a voltage regulator and quite pricey too.  JohnD

 

John;

 

B&C Specialty Parts, http://www.bandcspecialty.com/ printable catalog, page 8, part #OMV-14; $35.

 

Al  

 

BTW, if this is the same as the module I used on my RV-8, it works by tripping a breaker when the over voltage occurs.  Normally, the breaker is supplying field current to an alternator, which almost always means an external regulator.  If you don't have a low current way to break the field current, and need to break the high current line, then you have to used this OV module to trip a breaker that's holding in a main contactor for your high current "B" lead.  If any of that was confusing, Ed can explain it :-)

 

Yes; you’ve got that right, this OV module (oh, was that part number OVM-14? – oh well) provides a circuit to ground in the event of over voltage.  I have an internal regulator, but I went in and did the surgery to disconnect the regulator from the output so I could provide the field current from an external circuit. The OVM then trips the field current breaker in the event of excessive output voltage.

 

Al