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Thank you for the great forum, Safe Driving over the weekend. Sincerely Jason

Ian

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About Ian

  • Birthday 21/06/1964

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    Male
  • Location
    McGregor, WC
  • Interests
    I are engineer!

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  1. Just a FYI : You can achieve that head with a .5kW single phase AC pump, that can be driven by 800m of 2.5mm surfix, with a <10% cable power loss. That's 2k for the pump and 8k for the cable. Not sure how that compares to other options?
  2. Howdy How far is the borehole from your main AC power? We are pretty rural, and have had all our isolated solar borehole installations stolen repeatedly. Eventually i changed over to AC pumps (Hurricane Pumps) powered by long AC cables from our house for 2 reasons: 1) the pumps are easy to procure and cheap(R2000) as opposed to the Solarmax units and 2) Its easier to look after your panels if they're on the roof of your house:) The pumps are secured 2 ways: either burying the head under a pile of soil, or cutting slots into the baseplate and then welding the baseplate to the headpipe at the slots. No matter how we secured the panels, if the site was isolated, the guys would spend ages breaking the protection down, and it was better to spend the money on a 220V cable run. Good luck whatever you do!
  3. Hi I installed a 3-phase Zeversolar grid-tied inverter at my place in Noordhoek, CT some years back. By adding a DIN rail energy meter to the house input, and a ZeverCom control unit it was possible to configure the inverter to ensure no export. I used it for 3 years with a prepaid meter, with no issues. Ian
  4. Hi My neighbour has installed one of these units. They're very limited power wise, and 12V only. The solar charger is 40A max, and there's a 500W max spec on the PV input. My question is whether more PV can be installed than the 500W max? Obviously the unit will can only supply 500W, but it would be useful to have more capacity for cloudy days, and early/late hrs etc. Question is will it just max out at 500W at midday, or go poof with say 900W of panels installed? Specs attached. Cheers Ian Axpert_MEX_DS.pdf
  5. Hi I bought an off grid place a year or so back. Its has a Multiplus 3kW/48V, which I'd like to beef up. Anyone know whether the new and old generation can be parallelled , or do I need to get another Multiplus? Or turf it and get a 5kW... Cheers Ian
  6. Howdy. Please feel free to point to the correct forum for this post - thought I'd start here. I have bought a farm with an off grid Victron based setup. The system is built with the following Victron equipment, installed early 2015: Multiplus 48/3000/35 Inverter BlueSolar 150/70 MPPT Charge controller BMV 600S Battery Monitor + 8 200Ah 12V batteries and 4.2kW of panels. I'd like to monitor the system performance and battery state while I'm away, and would like some recommendations on the best route. Via Victron it seems that the Venus GX + cables is the way to go, but I see the software can also run on a rPi? Is there anyone here that's done that? I'd also like to set up a system that can switch on borehole pumps if there is sufficient excess power, so something that can interface with a automation server (could run on an Arduino) would be great... I'm a retired engineer, so reasonably happy to DIY a solution. Any advise appreciated:) Ian
  7. I'm selling the following: 1 x ZeverSolar Evershine TLC 4000 3 phase solar inverter 1 x ZeverSolar Power Management Unit 1 x Eastron 3 phase Energy Meter https://www.zeversolar.com/products/productline-detail/productline/detail/en-evershine-tlc-solar-inverters/ https://www.zeversolar.com/products/productline-detail/productline/detail/en-zevercom/ The PMU and energy meter are set up to prevent feedback to the grid (so you can use it with a prepaid meter in Cape Town, for instance), and have been working perfectly for the past 2 years with my prepaid meter. Pic of my prepaid meter is attached as well. I'm moving, so the system is being decommissioned. Complete kit R12000 ono. Everything in perfect order. if interested, please contact me on WA, 0843165839 Ian
  8. That's right. They're a division is SMA...maybe the SMA distributor has decided to rather keep supplying the expensive option. Makes good business sense as they know that if noone wants to pay for the local approval, they're safe? Perhaps as cheaper approved inverter options become available they will rethink. Cheers
  9. Sure. The inverter is a Zeversolar Evershine TLC4000, controlled by a Zeversolar ZeverCom controller. The controller gets the 3P current measurements from a Eastron SDM630DC DIN meter. These 3 were supplied to me for Rk21 incl, I did the installation and setup myself. The 10 300W panels I purchased about 18 months ago for Rk18. I have a Landis & Gyr 3PH prepaid meter that was installed about a year ago when the prev unit malfunctioned. Cheers Ian
  10. I hate red tape with a passion, so I'm happy to just fly under the radar on this one, esp since I have a short time horizon at this property. As an engineer, it really gets my goat that the city has an approved list - I know we in CT are a little enclave of sanity in this country - but we are all connected to the same bloody grid. Surely there should be a national list? Or an Eskom one...
  11. Hi TT My conclusion was purely based on the upfront costs - Rk20 for the documentation etc, and additionally the added cost of only being able to pick an inverter of the CoCT list. The Zeversolar option cost me Rk21, the panels were Rk18, so my installed cost was about Rk43. Adding Rk25 to that due to the the above reqs seemed excessive. I don't have an issue with the SSEG tariff structure - I'd be happy to be on it, due to my consumption. Another reason for not wanting to overspend is were planning to sell and move to a farm in 12-24 months time. Cheers Ian
  12. I've also noticed that - fortunately the PP meter doesn't seem to complain, although I presume the generation is seen as consumption. It's also tricky as I have 3ph, so some of the phases might be net load, while another is net generative, depending on the situation.
  13. Thought I'd resurrect this topic, for the sake of tying up loose ends:) Firs off, thanks for the help. I spoke to a few suppliers, but the SSEG route was economically unfeasible, due to the high upfront admin costs. So I looked around for a GT-limited solution, and was offered a 4kW Zeversolar 3-ph inverter, with a limiter and meter, at a good price and more importantly, zero cost if it didn't interface correctly with my 3-ph Prepaid meter. I dd the install mid August, and am happy to report that the system is working perfectly, having produced 850kWh to date. I had to set reconfigure some timers on the geyser and irrigation to optimise my general load for daytime, and max out the solar usage. Saving me ~R750pm on my electricity bill. Cheers Ian
  14. Hey All I'm looking for an installer to supply a 3-phase GT inverter, sort out the SSEG application and commission the GT system. In Noordhoek. 3kW of panels are already in place. Any suggestions? Cheers Ian
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