Basic description of Generator and Lane system operation

Hi all

Just before the holidays we had a discussion on the correct way to start the injected engines with 3 phase power systems.  Rotax has always called out a momentary switch to give initial power for the start.  I noted that a number of failures have been seen with people using latching switches and leaving the power on while they have no failure of the internal generators.  

Many OEM use a relay that replaces the momentary switch and for the most part that seems to work well.  

When posing the question to the factory they are surprised as a latching switch was never called out.  They have agreed to do a test, the initial response was the concern of what happens when the 3 phase generator reaches 15 volt?  So now we will have to wait until they can test the issue and perhaps the electrical experts can figure this out also.  My feeling is may be some type of backfeed issue via the fuse box that stops the dumping of excess voltage as is done by the regulators.  

Just my opinion.  We will wait for verification just to be sure.

Cheers