www.duromaxpower.com
www.duromaxpower.com
I’m not sure what kind of system that you have. I have a 48v 3500w all in one unit. I use it in a travel trailer so incoming power is limited to 30 amps 120v. I am able to use a predator 3500 (3000 continuous watts)! By setting the charge rate low and limiting my loads or limiting my loads to 800 watts till the batteries are charged I can use it with no problem.I'm following with interest, as I don't want a dedicated back up or diesel generator. I have a cheap hyundai 3500 peak, 2800 running remote start inverter gen. I have to admit it has been a little tank. We have built 3 cabins with it as our only power source for work, 1/3 hp well pump, and other power. I'm now considering 1 of the 2 below, as I have propane roughed in for a gen, and wall heater to our solar shed, from our big tank.
The 4500 uses .44 gallon per hour +- @50% load
The 9000 has 120 and 240v, and uses 1 gallon per hour +- @50% load
I am trying to determine the real minimum load that I might be able to get away with. I'm not there yet, but I think I can rig up the 9000 to use slightly more than the 4500, in best case scenario with less load required, and still have the extra power, and 240 for a small welder when I need it.
My #1 priority is using the least amount of LP as possible, while having adequate back up, but the extra power would be nice. I'm going to do some math but I might buy them both, test real world then sell the one I don't want. If Lp consumption can be brought within 20% +- it will be the 9000.
FYI 2 friends have similar units to the 4500, sold as Westinghouse. Based on their experience, I think I'll avoid it.
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XP4500iH Specifications Gasoline Peak Wattage 4,500 Running Wattage 3,600 Running Amperage at 120V 30 Runtime at 25% Load 16 Runtime at 50% Load 8 Propane Peak Wattage 4,275 Running Wattage 3,420 Running Amperage at 120V 28.5 Runtime at 25% Load 19 Runtime at 50% Load 11 Engine & Emission...
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Good deal I was hoping you had a setup like that.
i have the same generator (the quiet predator 3500) but will be using it will the growatt 48v 3000. do you have to physically turn on the generator or can the inverter trigger the electric start? also are there any setting to the ac charging amount or anything that youd recommend?
Most AIO units that I know of have a relay that can trigger automatic start on a generator however the predator 3500 inverter generator does not have auto start. There is an aftermarket remote start available but I don’t know if it is practical be modified to operate off PV a relay instead of a fob or not.
I’m not sure what you are trying to accomplish. Why don’t you use the eco directly to power your load?
One problem is that your growatt is designed for nearly twice the amperage than what the eco flow can provide. I would suggest that to get it working you connect it to grid power at the amperage specification listed in the manual and then experiment with the settings till you find what is causing the unexpected power consumption. Remember an AIO only passes through ac power it doesn’t subsidize it so without a battery you will be either running completely off of the solar or completely off of the ac. I suspect that in order for the inverter to work “directly” from solar it must have some sort of a capacitor involved that may be overwhelming your eco flow. If there is a setting that prevents this you will still have to factor in the power consumption of the growatt itself when it switches to ac. The reason I was questioning what you are trying to accomplish is that I was wondering if it is even technically possible to do what you want with an AIO because of how they are designed to handle ac power.
I Growatt manual "Line Mode Specification" table says:
If the new AIO units that can use solar independently of battery can subsidize ac with solar that is awesome ( I wanna get me one) however obviously something isn’t working That straightforward or else you’re idea would work flawlessly. so In order to see how much power your growatt is actually using (use a clamp meter or a shunt not the Growatt display or the eco flow display) you need to have it connected to actual grid power or a generator that can supply enough power to trip the recommend size breaker that feeds your growatt. Then you can see it’s actual amperage use and wattage consumption ( by mutiplying the amps used by the voltage) there might be a setting that will eliminate the sudden inrush of current over a certain wattage. You should expect to see at least a 50 watt loss of power between the wattage into the growatt and the wattage out of the growatt probably more. It would be good before getting to frustrated with the growatt to make sure it actually works if it is setup inside of the parameters it was designed for. It is possible something is wrong with your growatt. I would want to rule that out first.
Ideas-
120v
What’s the battery voltage at?
I think the only issue would be as the charger raises the voltage to charge the batteries the inverter might throttle down any solar charging from its end, as long as its dc going in to the inverters battery input at suitable voltages the inverter will just use it. I ran my spf3500es off an ebike charger to see if it worked as i didn't have any batteries or pv.
I came looking for answers as i tried my diesel genny (non inverter) with my growatt today, it connected and charged for a minute but then just cycles grid bypass/inverter mode.
