On Sat, 9 Sep 2017 08:42:38 -0700 (PDT), alecwishart@gmail.com wrote:   
      
   >On Wednesday, August 1, 2007 at 7:52:56 AM UTC-5, Nate wrote:   
   >> There are a few other posts about this but I'm going to chime in   
   >> also.   
   >>   
   >> We just installed a Generac 16KW generator at our office to supply our   
   >> server room, network backbone, phone system, and supporting air   
   >> conditioning.  First test after installation showed that every APC UPS   
   >> would NOT accept the power from the generator... this is pretty much   
   >> all of the gear that we are trying to protect.  Frequency checks on   
   >> the generator indicate that it's low... around 57 to 58 Hz (no means   
   >> to adjust it).  Called Generac and was told this is a known issue and   
   >> that this generator won't maintain 60 Hz until it's loaded to the   
   >> upper end of it's capacity (we're currently running about 55% load).   
   >> I'm pretty surprised that Generac is selling a product like this and   
   >> apparently it's only an issue in their V-twin engine models.  I've   
   >> worked in the electrical generation/distribution field and I've never   
   >> heard of anything like this before.  Even my cheap house and camper   
   >> generators maintain frequency throughout their load range.   
   >>   
   >> One additional note on the UPS units.  We noticed that the Tripp Lites   
   >> do accept the power because their frequency tolerance is twice that of   
   >> the APC line.  Also, the larger rack mount APCs do have a sensitivity   
   >> adjustment which, when adjusted fully, will accept the low freq   
   >> power.  End result is that we're looking at replacing all our smaller   
   >> UPS units or working in additional load to the generator.   
   >   
   >The more I use Generac the more i realize they are crap. You can buy a   
   cheaper chinese brand thats 100% better.   
     And the same can be said of APC (A Piece of Crap) particularly in   
   their lower end stuff.   
   As far as ther frequency is concerned, all you need to do is crank the   
   governor up a wee bit   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)