Photo Voltaic Inverter #2 CB trips.

OK  the next work is that the PV at PE has Inverter #2 has been going into alarm because the CB tripped last month and again this month.  I can lift the wire and megger +/or swap out cb but better to do the annual PM first

Lets see if we can have a look at the log and find out when that Inverter goes into fault.

 It looks like inverter 2 made it thru the day on the 11th but was not online starting on the 12th.
I reset the cb just before lunchtime on the 12th.

From the points shown in Delta Diamond PE GUI I will have to go to PE Solar Enclosure to get the name/number of the Emon meters... esp for Inverter2 so I can run some trendlines

We have not had preventative maintenance training so I will recommend calling in Borrego Solar (Buchanan, Gary) and walking with them for their work and making it clear we will need training in the annual PM on the inverters.  I was hoping to get p. maintenance training in those unit's
besides annual mop down

I can exercise disconnects, check connections, thermal image but I would like to walk with them and develop a protocol.

as per RT:

I remember Gary Buchannan telling me if trip continues they need to check it out. Maybe should not reset breaker next unless he says ok. Someday When we rich (hihi) we should plan to inspect 400vdc Jb's on the poles. Gary may have provided incl $ # info. Suggest contact them for $ Re inverter work, Guess  3 - 5. K.  Ask what suggested 10 year replacement cost is for inverters, pricey but not remember 20k + apiece????