Lt.Dan
Solar Wizard
Hey guys, I've had my 2x LV6548's for a while now in my trailer, and I have some issues with it that I believe could be solved with a firmware update. The reason I'm posting here is I dont know if its possible and is limited in hardware capability, or if its just software.
Now, I've been to a few RV parks since installing this system, and both of them had shoddy wiring, and 1 of them only had a 30 amp connections. At both places I had problems popping breakers both inside the trailer, and also at the pole. The RV park that had the 30 amp connector had voltage dipping below 110v very often and I saw it as low as 103v a few times when the breaker popped. I also was forced to switch the LV units to single phase because there was only single phase coming in, but thats not something that can be fixed with software and is irrelevant for what I'm trying to do. I even had my 50a to 30a adapter melt a pin on the 30a side!
Charging the batteries while in "Bypass mode" is also counterproductive because I can't overload the breaker in the pole. So for instance, if I am limited at 3600 watts (120v X 30a, even though getting down to 103v x 30a is only 3090w) then I set the chargers on the LV unit to charge at 50a (51.2v X 50a = 2560w), then I turn on some lights, the TV, a fan, the refrigerator, I pop the breaker because the charger is constantly going to draw that 50a no matter what. This could be solved with a "Max Amperage Draw from AC" option. I know Victron equipment has this option already, dont patronize me! Lol. But if I could set a max of 25a from the AC Input, then charge at max, it would be a big plus.
Another fix for this situation is, right now I cant set the inverter to charge the batteries while inverting. It will only charge via AC input while in "Bypass mode" which means the trailer is powered from the AC input at the same time it is charging. I'm curious if I (MPP Solar) could somehow program the inverters to take in power from the pole, strictly to charge the batteries, then had the inverter side supply power to the trailer. This always puts constant 119-120v to the whole trailer, and not a wildly horrible voltage curve. Then I can set it to charge at 60a (51.2v x 60a = 3072w) and never overload the breaker at the pole.
Can this happen? If so, I'm going to try and contact MPP and see if they can implement a firmware update with these features.
Now, I've been to a few RV parks since installing this system, and both of them had shoddy wiring, and 1 of them only had a 30 amp connections. At both places I had problems popping breakers both inside the trailer, and also at the pole. The RV park that had the 30 amp connector had voltage dipping below 110v very often and I saw it as low as 103v a few times when the breaker popped. I also was forced to switch the LV units to single phase because there was only single phase coming in, but thats not something that can be fixed with software and is irrelevant for what I'm trying to do. I even had my 50a to 30a adapter melt a pin on the 30a side!
Charging the batteries while in "Bypass mode" is also counterproductive because I can't overload the breaker in the pole. So for instance, if I am limited at 3600 watts (120v X 30a, even though getting down to 103v x 30a is only 3090w) then I set the chargers on the LV unit to charge at 50a (51.2v X 50a = 2560w), then I turn on some lights, the TV, a fan, the refrigerator, I pop the breaker because the charger is constantly going to draw that 50a no matter what. This could be solved with a "Max Amperage Draw from AC" option. I know Victron equipment has this option already, dont patronize me! Lol. But if I could set a max of 25a from the AC Input, then charge at max, it would be a big plus.
Another fix for this situation is, right now I cant set the inverter to charge the batteries while inverting. It will only charge via AC input while in "Bypass mode" which means the trailer is powered from the AC input at the same time it is charging. I'm curious if I (MPP Solar) could somehow program the inverters to take in power from the pole, strictly to charge the batteries, then had the inverter side supply power to the trailer. This always puts constant 119-120v to the whole trailer, and not a wildly horrible voltage curve. Then I can set it to charge at 60a (51.2v x 60a = 3072w) and never overload the breaker at the pole.
Can this happen? If so, I'm going to try and contact MPP and see if they can implement a firmware update with these features.