March 11, 20242 yr On 2024/02/27 at 5:59 PM, Scorp007 said: From what we could gather it is when equipment have a transformer PSU and not switched mode which is normally happy with the 120-260V range. May be contact Solar Europe manager. It seems new firmware is available. This we heard from a manager who visited them. Hi Scorp007. I might try this, but I see they are located up North - I'm in Cape Town. Ideally I'd like to deal with someone local who is familiar with this problem as well as this specific Lux inverter, and who can come fix this.
March 11, 20242 yr I have the same issues, no fix. I have reached out to Luxpower support and they were of no use. My subwoofer takes a 5A fuse and this blows occasionally if the subwoofer is on when there is the dip, so now I need to manually turn off the subwoofer when not in use. If someone finds a fix, please do let me know!
March 11, 20242 yr 12 minutes ago, JohnCT said: Hi All. To add to my initial problem of fuses blowing, I did a test. Just before load shedding, I turned the volume right down to pretty much 0 (but amp was left on). Load shedding started and inverter kicked in..... fuse did not blow, I then increased volume and all was fine. Not sure if this gives any better idea as to the cause? My earth is good. Electrician put in a new earth spike when he wired the inverter to the DB board (with surge protect). Cheers. If the earth resistivity is high you will still have a problem
March 11, 20242 yr 3 minutes ago, PsyCLown said: I have the same issues, no fix. I have reached out to Luxpower support and they were of no use. My subwoofer takes a 5A fuse and this blows occasionally if the subwoofer is on when there is the dip, so now I need to manually turn off the subwoofer when not in use. If someone finds a fix, please do let me know! Have you actually tried the latest firmware launched 2 months ago. Speak to the manager of Solar Europe in Lavender Rd Pretoria. They are the importer of Luxpower or one of the official importers.
March 11, 20242 yr 4 minutes ago, Scorp007 said: Have you actually tried the latest firmware launched 2 months ago. Speak to the manager of Solar Europe in Lavender Rd Pretoria. They are the importer of Luxpower or one of the official importers. Yes, both my inverters are on the latest firmware available. I just double checked and still no new firmware available for my inverters.
March 12, 20242 yr 21 hours ago, PsyCLown said: I have the same issues, no fix. I have reached out to Luxpower support and they were of no use. My subwoofer takes a 5A fuse and this blows occasionally if the subwoofer is on when there is the dip, so now I need to manually turn off the subwoofer when not in use. If someone finds a fix, please do let me know! Hi PsyClown (and anyone else with fuses blowing). Have you maybe tested your audio system anywhere else; eg at a friend/neighbour who might have a different brand of inverter? I've not done this yet, but it would help to narrow down to what the culprit is - Luxpower/Amp or sound system/power voltage from Eskom? I'm annoyed with Lux, but possibly the top brands such as sunsynk also do this?
March 12, 20242 yr 1 hour ago, JohnCT said: Hi PsyClown (and anyone else with fuses blowing). Have you maybe tested your audio system anywhere else; eg at a friend/neighbour who might have a different brand of inverter? I've not done this yet, but it would help to narrow down to what the culprit is - Luxpower/Amp or sound system/power voltage from Eskom? I'm annoyed with Lux, but possibly the top brands such as sunsynk also do this? So far we have seen a common problem which affects only Luxpower SN inverters and only during the switch over period.
March 12, 20242 yr 58 minutes ago, Scorp007 said: So far we have seen a common problem which affects only Luxpower SN inverters and only during the switch over period. My Luxpower has the same problem for sure. I have not blown any fuses yet, but yesterday my aircon was running and it had an epileptic fit when the power went out. It sounded like it wanted to climb out of the plastic housing. I am pretty sure that my HiFi would have blown its fuses as well if it was on. So apparently updating the firmware does not make a difference. Has anyone found any solution to the problem? I must say, I am not impressed, at all.
March 13, 20242 yr On 2024/03/12 at 8:03 AM, JohnCT said: Hi PsyClown (and anyone else with fuses blowing). Have you maybe tested your audio system anywhere else; eg at a friend/neighbour who might have a different brand of inverter? I've not done this yet, but it would help to narrow down to what the culprit is - Luxpower/Amp or sound system/power voltage from Eskom? I'm annoyed with Lux, but possibly the top brands such as sunsynk also do this? I have not, however if there is no changeover from grid to inverter then my subwoofer works without issues - my Harmon Kardon amp does not seem to be affected, only my big subwoofer. On 2024/03/12 at 10:23 AM, eugenedp said: My Luxpower has the same problem for sure. I have not blown any fuses yet, but yesterday my aircon was running and it had an epileptic fit when the power went out. It sounded like it wanted to climb out of the plastic housing. I am pretty sure that my HiFi would have blown its fuses as well if it was on. So apparently updating the firmware does not make a difference. Has anyone found any solution to the problem? I must say, I am not impressed, at all. I experienced something similar with my LG smart inverter microwave before, it just did not sound good but came right after a few seconds and had noticed the same with an inline extraction fan in my garage - never any issues with my inverter type midwall aircons though. I do feel the changeover time is a bit slow on the Luxpower and I believe when the inverters are in parallel it does affect the change over speed and this I think is the possible cause. I have yet to find a solution, so as mentioned above I simply turn my subwoofer off and if I miss it and the fuse blows I have simply been replacing the 5A fuse each time. I have gone through a pack of 5 already...
March 13, 20242 yr 1 hour ago, PsyCLown said: have yet to find a solution, so as mentioned above I simply turn my subwoofer off and if I miss it and the fuse blows I have simply been replacing the 5A fuse each time. I have gone through a pack of 5 already... Wow. I am just lucky that mine has never been on when the power goes out. Only a matter of time though. Luckily my PC and NVR's power supplies have survived thus far(touch wood). Edited March 13, 20242 yr by eugenedp Spelling
March 13, 20242 yr Maybe someone try putting a 5kW isolation transformer on the inverter output to try and arrest any spikes, etc. Would be interesting to test. Also putting a storage scope on the output during change-over?
March 13, 20242 yr 1 hour ago, TimCam said: Maybe someone try putting a 5kW isolation transformer on the inverter output to try and arrest any spikes, etc. Would be interesting to test. Also putting a storage scope on the output during change-over? Due to a client having the blown fuse problem we put a storage scope on the inverter but could not find any problem around the output graph when power goes off.
March 13, 20242 yr 1 hour ago, Scorp007 said: Due to a client having the blown fuse problem we put a storage scope on the inverter but could not find any problem around the output graph when power goes off. If even a scope does not highlight an obvious problem, the problem may well prove impossible to diagnose, for us normal people. It may call for the manufacturers to get involved. If I was not in the poorhouse, I would start looking around at other makes. I have not heard of the same problem with other inverters.
March 13, 20242 yr 2 hours ago, Scorp007 said: Due to a client having the blown fuse problem we put a storage scope on the inverter but could not find any problem around the output graph when power goes off. Well done for doing more in-depth troubleshooting! What were you monitoring with the scope? With my rather basic understanding of electronics, fuses are meant to blow if an over-current condition exists; over-voltage (spikes) would not necessarily blow a fuse, so monitoring voltage might not show anything significant in terms of spikes. There also seems to be a theory that if the phase of the waveform between the inverter is out of sync with mains, the transformer may briefly draw more current (for reasons I have limited understanding of.) If you were monitoring voltage, are you able to tell whether the inverter and mains waveforms were out of phase?
March 14, 20242 yr 8 hours ago, Scorp007 said: Due to a client having the blown fuse problem we put a storage scope on the inverter but could not find any problem around the output graph when power goes off. I think the problem only occurs sporadically - not with every changeover. Do you have a recording of an event that did blow fuses?
March 14, 20242 yr 7 hours ago, JannieH said: Well done for doing more in-depth troubleshooting! What were you monitoring with the scope? With my rather basic understanding of electronics, fuses are meant to blow if an over-current condition exists; over-voltage (spikes) would not necessarily blow a fuse, so monitoring voltage might not show anything significant in terms of spikes. There also seems to be a theory that if the phase of the waveform between the inverter is out of sync with mains, the transformer may briefly draw more current (for reasons I have limited understanding of.) If you were monitoring voltage, are you able to tell whether the inverter and mains waveforms were out of phase? Various tests were done based on what we discussed in the office. I wasn't present but one thing one of our members indicated was perhaps a DC component when switching back to grid. No trace of blowing fuses during the test. In our application it's a transformer based PSU blowing fuses. We just increased the fuse to 500mA and it seems to solve the problem for this client. Found no trace of not being a sine wave or increased current or spikes. Could not get fuses to blow and can only go by what the client says. He is non electrical. Edited March 14, 20242 yr by Scorp007
March 25, 20242 yr On 2024/03/11 at 9:57 AM, JohnCT said: Hi Warwick. Let me know how the 1A fuse works. As you say, it's not wise, but I'm curious to* outcome. Hi John. So far so good. I also upped voltage from 220 to 230 On 2024/03/11 at 9:57 AM, JohnCT said: Hi Warwick. Let me know how the 1A fuse works. As you say, it's not wise, but I'm curious to outcome.
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