Jump to content


  • Content Count

  • Joined

  • Last visited

Profile Information

  • Location
    Cape Town

Recent Profile Visitors

The recent visitors block is disabled and is not being shown to other users.

  1. Big thanks to Steve for the efficient and great service and fast delivery... I ordered two Pylontech US3000's and a cabinet for them, got to install them yesterday, now looking forward to using them.
  2. forgot to add the size: 92mm x 92mm x 25mm
  3. So I went rummaging through some stuff and found the old main board and fans from the replacement done in 2019. Here are the specs of the original fans used in the Infinisolar 3kW Plus Make: ADDA Model: AG09212MB257310 Supply Voltage: 12VDC Max curent: 0.3A Air flow: 56.126CFM (82.912m3/h) Fan speed: 3000RPM Duty cycle: 50000H Noise: 36.2dB(A) It seems this particular model is a little difficult to find at the moment, found one on Aliexpress for $47 plus $40 shipping, so I guess I'll try find something close to that spec...
  4. @plonkster, good point there. I originally had the load RCD after the changeover but thought the second RCD in series with the grid RCD was causing/adding to the grid side RCD trips so rewired the output RCD to be before the changeover, thereby only having the one RCD in play at any time. I understand what you're saying about the standing leakage currents so may move the output RCD back to be after the changeover, although I thought the first RCD in the series would typically detect the total leakage anyway, but the "more sensitive" RCD would end up tripping...
  5. so, I've installed a new main switch with overload protection and a new RCD, after the main switch, and connected the inverter grid input from before the RCD and have been running the inverter load for a few days and all seems good now with no more grid side RCD trips. Thank you all for the tips etc... For those new to reading this post, here is my new basic wiring diagram...
  6. Does anyone know the specs of the original fans in the Infinisolar 3kW Plus, specifically the Amp and air flow ratings? I've been looking around for fans, there is a fairly wide range in terms of Amps and air flow and quite a price range too...
  7. The likes of the Mersen and Keto also act as a convenient disconnect (switch) which is useful when attaching the cables to the inverter. When I first did mine I had a good fuse but no switch/disconnect so when I was attaching the cables to the inverter I got a nice arc between the inverter contact point and the bolt with the cable lug as it got close enough, got quite a fright. A battery disconnect is actually a good idea, partly for what I just mentioned but also if you need to disconnect the battery from the inverter for some reason.
  8. ensure your battery cables are correctly rated for the potential current draw, then use fuses rated under the cable spec, so that the fuse(s) blow before the cable heats up and ignites... I believe it's okay to use a single fuse, I have only 1 fuse on my positive battery cable but I'm about to install a 2 pole battery disconnect with fuses on both poles. I've been looking at the Keto (manufactured by Jean Muller) disconnect but also the Mersen Keto - https://www.google.com/search?client=firefox-b-d&q=Fuse-switch-disconnector+KETO Mersen - https://www.google.com/search?client=fir
  9. yeah, when I got the inverter back from Mustek and powered it on I immediately noticed the fans were blowing down instead of up, being mounted at the bottom they will never achieve enough trying to suck hot air down. I changed the fans over myself easily enough, but mainly because I wasn't going to take the inverter back to Mustek as I'm sure they would've taken another month just to turn the fans around, the inverter is way out of warranty so wasn't concerned on that front... I will try source suitable replacements but will still add the extra external fans, with a simple temperature con
  10. @Coulomb, yeah, that's my thinking too. The fans were replaced by Mustek, took them over a month to "test" and agree the fans needed replacing then about 2 weeks to source fans, which they kept complying about being difficult to source due to their Amp ratings. They mentioned the original fans had a rating of 0.3A and fans they tried with different Amp ratings kept triggering the error code 27 (fan fault) and then fitted R100 fans. I'm no expert but I thought that a rating of 0.3A or higher would work as the specs of fans I found mention "max current" and what I could find in 3-wire and with
  11. Hi All, Does anyone know at what inverter internal temperature to start being concerned? I have an Infinisolar 3kWPlus and the cooling fans have just been replaced, initially installed upside-down, but they don't seem to be blowing as hard as the previous (original) fans. I am monitoring the inverter temperature and have set an alarm trigger at 55 Celsius but yesterday evening it triggered, reached 58 and the air temp was around 14. It was working a bit having just been brought back online... I see reference in the manual to "over temperature" but cannot find what value they conside
  12. Here's a basic diagram of my layout. I found out that it's crucial to have the inverter input feed from before the utility side earth leakage (RCD) else the RCD keeps tripping. I put the inverter load output RCD before the change-over switch, just to avoid having 2 RCDs when changed over to utility, it's not normally a major issue though as far as I know... The top of the following post has quite a nice diagram of the wiring setup...
  13. To answer my own previous remarks, it seems the inverters do/should indeed get their grid input feed before the earth leakage (RCD) in the DB, but after the main switch.
  14. Quick question (hopefully).. If I'm replacing my RCD I see there are 2 options (with CBI anyway) - with and without overload protection. Am I correct in assuming the with overload protection would be current draw based, like CBs, as well as the EL and therefore if I'm going to install a main switch that handles the current overload I can go with the without overload protection unit? There is a significant price difference, the "with" option being around 2.5 times more costly. I'm looking at CBI as that's what mostly in the old DB (not DIN rail) and I believe the brand is good.
  15. @Gielie, thank you for those post links, have read them and found a few others around, not sure I really understand much of it but do believe I need to move the inverter input feed from after the RCD to before it (grid side). This will mean doing some rewiring to put a main switch/isolator before the RCD as currently the grid supply goes directly into the RCD first then to the main switch. I may just replace the RCD while I'm at it as it's very old anyway and I see the new CBI ELs are narrower which would create the space I was after for an additional CB too (very old DB with metal cover and
  • Create New...