Never even thought of fibro! Should have some in the garage. There'll be an air gap between inverter and fibro, so that should be OK.
Thanks,
dRdoS7.
PS. 2 homes & 4 inverters? Capitalist or Mormon, or both?
Never even thought of fibro! Should have some in the garage. There'll be an air gap between inverter and fibro, so that should be OK.
Uninterruptible Power Supply?
No. Sorry. We need a manufacturer's firmware update file for it before we can do that, and no one has sent us one. All available patched firmware is listed in the Firmware section of the index page.
Sadly, almost certainly it does have the premature float bugs. Worse, there isn't a patched version of this firmware to correct it.serpentus wrote:I saw the Axpert MKS II 5K (the one with 450VDC MPPT) ( http://www.voltronicpower.com/oCart2/in ... uct_id=132 ). I wanted to ask if you guys know if this inverter has the premature floating bug issue. The inverter is the latest model ( that is what the dealer told me), just arrived...
That's nonsense. However, these are low-end inverters, and they do cut corners on the specifications for some of the components. That's why Weber and I always replace the MOSFETs and capacitors in all our inverters. That gives them more voltage "headroom" and the capacitors (which protect the MOSFETs) a lot more life. Of course, most people don't have the technical capacity to do this, so they just take the chance, and simply replace the inverter when it fails. As long as it's not a mission critical application, this probably makes economic sense.Also I read in another forum that the Axpert invertors should not be used over the 40% of the rated output. Is this true? And why?
Brands like Victron and SMA have far better components inside. But the last time I looked at this (admittedly that's many years ago now), the next best inverter was many times the price of these Voltronic Power units. So for us, patching the firmware and upgrading some components was worth the extra effort. Maybe that's no longer the case.I want to know this before buying it. Or else I'll look for another brand.
The same comments apply to all their inverter-chargers, although their Infini series (hybrids) may be different. I don't have enough experience to comment there.EDIT: Same questions for the Axpert MKS 4K-48.
No. It seems that Weber and I are the only two working on firmware patches for any Voltronic Power inverters, and we don't have access to any firmwares for these models. We also don't have any interest in them, and would prefer not to encourage others to use them.
Sorry, but that battery isn't suitable for that inverter, or likely any nominal 48 V inverter. To get 5000 W from 30 VDC, ignoring sagging and losses, you'd need 167 A, and the front end simply isn't designed to carry that sort of current. So even if you could butcher the firmware to accept such a low battery voltage, it would very likely blow up the inverter.I purchased the pip-5048GK. there is a specific battery that I would like to use and the voltages are to low to be used with my inverter.
30v-42v discharge and 42v charge.
the pip lowest voltage for discharge is 44v and 42v under voltage cutoff.
I've moved the post to a new topic.
If there are, hopefully they'll find this topic and let you know. But I don't think it's likely. The art of working with executable / binary files, even with assembler code, seems to be dying.but I want to know if someone are working in a custom firmware for PIP5048GK.
PIPs are not great at battery voltage regulation; under- and overshoots are common. I suspect that they don't do much about the classic control problem of integral windup.
I think you need to get that voltage down; I have no idea what the voltage margin is on the 64 V models. As the capacitors protecting the MOSFETs age, that margin will presumably come down.Today it did it for about 1/2 hr, yesterday only a few minutes.
I have a similar setup, but with my PIP-4048. It's not an ideal setup, but I'm a cheap old man. I found through experience that I really had to have the second SCC get right out of the way while the PIP finished the absorb cycle on its own. So I set the second SCC's absorb voltage to be a few tenths of a volt lower than the PIP's absorb voltage setting. Similarly, I set the second SCC's float voltage setting a little lower than the PIP's float voltage setting. So they worth together for most of the bulk stage, the PIP does the end of the bulk stage and all of absorb (I have LiFePO₄ so that's only about 15 minutes), and most of the time in float, the PIP does all the work. When there is a larger load during float, the battery voltage drifts lower, and the second SCC starts to take some of the load. I don't have equalise turned on. It works well enough for me. I don't know if you'll be able to find a compromise like that for your battery situation.I have a 2nd SCC (a Classic 200), but the output of that was at 0 when I checked. The Classic's Absorb setting is 64.2V.
You need to find out if it was really happening and you didn't notice it. Do you have logging?It's the first time (OK, second) I have seen this since I've had it connected (05Nov2018).
I'm sorry to hear that. It's most unfortunate that while there is some protection against incorrect firmware updates, this is not one of them.Carricondo wrote: ↑Sun, 23 Dec 2018, 20:04 Now when it turns on, error 02 appears for a high temperature for a few seconds and switches off.
Alas, no. As far as I'm aware, there is no firmware updates for these machines at all. You'll have to go through your supplier.Is it possible to reinstall the previous firmware without going through technical support?
I believe it's quite good. Certainly a lot better than typical mains.CrAzY_DrIveR wrote: ↑Mon, 11 Feb 2019, 21:48 hi guys, how is the harmonic distortion on those units?
The RMS output was 1.8 V, and the current drawn on the clamp meter was very choppy. I think he was operating in power save mode; if so that's not a valid test.i saw a video on YT and it was really bad
Welcome, Daniel, and thanks for that information. It makes a little sense; at the minimum MPPT voltage, the Solar Charger Controller (SCC) has to boost the voltage by the highest factor, perhaps 3.5, where the efficiency is at the minimum, so the generated heat will be the highest.
Twelve panels is 330 x 12 = 3,960 W, which is lower than the rated SCC output. The lower voltage SCCs are routinely "overclocked" (more panel power is provided than the SCC can handle) by up to about 30%, so 5200 W nominal for an SCC rated at 80 A (~4000 W) output. These would nearly always have more available panel current than the SCC can handle. But just because the panels are capable of over 18 A doesn't mean the SCC will draw more than 18 A; it draws what it needs and can handle. I think you'll be fine with two strings of 6 panels.My original idea it was to set 6 units in one roof and 6 in the other and work with 2 strings, but after contacting mppsolar they told me that i can't , because the max AMP of this inverter is 18A, and unfortunately those solar panels get peaks of 9,5A.
18 A at 225 V at the PV input is 4,050 W, about the same as 50 V and 80 A at the battery. MPPTs are like DC transformers.CrAzY_DrIveR wrote: ↑Tue, 12 Feb 2019, 07:15 So 80A only for the charger? Solar imput 18A sounds so small
Thanks a lot coulomb, but.....coulomb wrote: ↑Tue, 12 Feb 2019, 07:41
Twelve panels is 330 x 12 = 3,960 W, which is lower than the rated SCC output. The lower voltage SCCs are routinely "overclocked" (more panel power is provided than the SCC can handle) by up to about 30%, so 5200 W nominal for an SCC rated at 80 A (~4000 W) output. These would nearly always have more available panel current than the SCC can handle. But just because the panels are capable of over 18 A doesn't mean the SCC will draw more than 18 A; it draws what it needs and can handle. I think you'll be fine with two strings of 6 panels.
[ Edit: Added verbage about how much PIP SCCs are typically overclocked by. ]