Luke, Don't know if you found your 48v shunt, but I've been meaning to mention that if you are using the TM500 in a 48v system along with a C40 Charge controller, you may run into charging problems. My memory from many years ago was that the shunt board set up some noise on the DC bus that confused the C40 and it stopped charging. This was a problem that Xantrex only finally admitted to after 1 1/2 years of traveling to a remote site to figure out why the clients system was not getting an appropriate amount of solar gain and talking to about every tech and engineer that I could get through to. It was the final straw in my decision to never use Xantrex equipment again - not that they had a problem, but that they would not admit it to me until I wasted enormous amounts of time going back and forth, finally getting some low level tech to tell me that the issue was identified some 6 months earlier. To date they have never issued a tech note on this. The TM500 is a bastardization of the Trimetric, and I was told that Xantrex was warned to not put some of the electronics onto the shunt, but they decided to do so anyway. I think that boB or Robyn were long gone from Xantrex by the time this issue was identified, but I'd be curious to hear if they knew anything about it...
-- Rant off -- Howie -- Howie Michaelson NABCEP Certified Solar PV Installer™ Catamount Solar, LLC Renewable Energy Systems Sales and Service VT Solar Electric & Hot Water Incentive Partner http://www.CatamountSolar.com 802-272-0004 On Thu, November 29, 2012 4:47 pm, Luke Christy wrote: > Hi Folks, > I have an old Xantrex TM500 energy meter that I'm repurposing for a > personal PV project. The unit was originally set up with the TM48 48v > adapter/shunt board (This thing has an RJ-11 connector for the comm cable > to the TM500 and screws directly to the kelvin terminals on a 500A shunt). > The 48V shunt board went bad, which is why I ended up with the TM500 unit, > but that's ok because I need it to work with a 24V system now. The > low-voltage shunt board for 12 and 24V systems was smaller and simpler > (as far as I can tell), but I haven't been able to find one anywhere. > Anyone out there have an old low-voltage shunt board that you want to > sell? If so please contact me off-list. > Thanks. > > Luke Christy > > NABCEP Certified PV Installer™: Certification #031409-25 > NABCEP Certified Solar Heating Installer™: Certification #ST032611-03 > CoSEIA Certified PV Installer > > Solar Gain Services, LLC > Monte Vista, CO > sgsrenewab...@gmail.com > 719.588.3044 > www.sgsrenewables.com > > > > > > > > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
