Hi All,
3 VFX 3648
2 FM 80
6.5 kw solar
12 kw generator
PSX 240 on generator output and VFX stacking
Mate 3
HUP 1690 ah
System design considering 45 amp charge current from each VFX totaling 135 amps. (135 x ~55v = 7.42kw) Potential charge current from 2 arrays and FM 80's, 90 - 100 amps. On a good day, reasonable to expect 200+ amps?
Have not been able to exceed 90 amps for more than 30 minutes, with the generator putting out about 9 kw before it's 70 amp 2pole breaker trips. L1 42 amps, L2 37 amps. 5 amps neutral. Load banked to 12.3 kw (51 amps @ 240v) resistive without breaker trip.
I have had to dial back the maximum charge current in the Mate 3 to 12 amps each on two of the inverters (L1 and L2) and 8 on inverter 3 to keep the generator from tripping out when customer turns on the microwave or coffee pot. In effect, 42 amps charge @ 240 v = 7.6 kw. At the battery, I'm only seeing 80 amps of charge current. Running loads are typically less than 1 kw but there has been a of construction going on with chop saws and compressors creating annoying spikes that are easily handled by the inverters when the generator is off.
I don't want to kill this new battery by not feeding it properly! I would have put in a larger generator, but the owner bought the 12 kw before deciding on the new battery. I thought the 12 would be merely adequate, but not so....
Any suggestions?
Thanks!
Bruce Fiero-RMI
"I'd put my money on the sun and solar energy. What a source of power! I hope we don't have to wait until oil and coal run out before we tackle that." T. Edison, 1931
_______________________________________________ List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re-wrenches.org Change email address & 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
