Showing posts with label Solar Power. Show all posts
Showing posts with label Solar Power. Show all posts

Sunday, March 2, 2025

My Son Plaas in die Vrystaat - Christi ZS4CGR

 

Hier volg interessante inligting rondom die gebruik van hernubare energie soos verskaf deur Christi ZS4CGR.  Soos gesien kan word het hy die "doen dit self" rigting gevolg en wek hy genoeg krag op om sy hele huishouding en amateur radio hok van krag te voorsien.  Dankie Christi dat jy die besonderhede rondom jou "son plaas" en opbou na son energie en onafhanklikheid met ons gedeel het.


Opbou na Sonenergie en Onafhanklikheid – Christi ZS4CGR

My pad na sonenergie het in 2004 begin. Ons was van plan om op die banke van die Oranjerivier bokant Aggenys ’n plaas te koop. Op die grond was nog nooit twee bakstene op mekaar nie. Kaal landelike grond. 6500Ha groot.

Ek het my eerste panele 2 x 70W gekoop teen R2500, drie tweedehandse 104 Ah batterye en ’n 400W 'ou tipe' omsetter. Vir ’n jaar was dit ons enigste energie. Daarmee het ons een rekenaar kon bedryf vir maks. een uur per dag. Drie florescent 8W kar 'lead lights' was ons lig in die drie army tente wat ons 'huis' was. Stoof en karavaan vries kassie was op gas. Warm water uit die donkie was net wintertyd nodig. Terloops, somer temperature in die skaduwee het 48°C bereik en in die tente tot 57°C. So teen 3h soggens het die temperatuur onder 32° gedaal en kon ons gou bietjie slaap voor die son weer opkom.

Hierna het ek vir drie jaar in die landbou gewerk en toe stuk-stuk getrek na die familieplaas waar ons nou voltyds woon.

In 2006 het ek begin speel met alternatiewe warm water stelsels (wat ons nou nog gebruik). Swart PVC klas drie 25mm pyp, 200m lank, opgerol en bedek met tonnel plastiek (teen wind -wat so 4j hou - sien foto). Geen opgaar houer nie, die druk van die watertenk voer die pyp en ons moet sorg dat ons voor sononder klaar bad en stort. Dag temperatuur van die water is byna konstant op 75°C, heel bruikbaar, heel jaar deur, behalwe op swaar bewolkte dae (omtrent 7 dae per jaar), dan gebruik ons warm water uit ’n 50ℓ geysertjie wat van die sonstelsel af warm gemaak word. Ons het tans ook 'blou pype' vir die kombuis en veldstort. Warm water is hier volop.

Dit is die agtergrond.

Net eers hoe al my son panele werk.

Ons panele is in 'bondeltjies' gebou oortyd, op ’n middel paal (pivot) sodat as die paneel regop staan die onderkant so 300mm van die grond af is. Hulle kan dus roteer. Dan kan die rame waarop hulle gebou is ook vertikaal gekantel word. As hierdie dubbel beweegbare metode gebruik word, lewer elke paneel tot 160% van ’n vas gemonteerde paneel se krag (dus eintlik ’n besparing is panele). Tans het ek agt individuele 'bondels'.

En ja ek verstel hulle met die hand omdat ek die tyd het en die oefening nodig het. As ons weggaan, draai ek hulle Noord tot ons terugkom.

Hier is my huidige 8 + 3 bondels:

2x 70W 12V Voer lood-suur batterye vir radio’s en ander 12V toerusting
2x 80W 12V Voer LiPO batterye en 5kW omsetter
2x 80W 12V Voer LiPO batterye en 5kW omsetter
6x 80W 12V Voer LiPO batterye en 5kW omsetter
6x 80W 12V Voer LiPO batterye en 5kW omsetter
2x 325W 24V Voer LiPO batterye en 5kW omsetter
4x 180W 12V Voer LiPO batterye en 5kW omsetter
2x 170W 12V Voer lood-suur batterye vir radio’s en ander 12V toerusting
1x 335W 24V Op karavaan dak foto
1x 225W 24V Op bakkie 'canopy'
1x 170W 12V Op bakkie 'canopy'


Hierdie 'bondels' was een-een aangeskaf, nie alles gelyk nie. Op die oomblik is die maks. lewering so 2.2kW.

Ek het baie lank gewerk met ’n motor battery bank van tot 15 batterye. So 3 jaar terug het ek ’n ou lood-suur 48V stelsel geskenk gekry, maar die 2V selle (24 selle) het nie ’n jaar gehou nie, waarna ek besluit het om oor te gaan op LiPO batterye. Omdat ek nie die LiPO batterye geken het nie, was ek geadviseer om 2x 3.7kW batterye te installeer, maar toe ek gaan sit en my somme maak, het ek die verskaffer gekontak en dit vermeerder na vier. En net ’n maand later het ek nog twee by gekoop, dus ses batterye van 3.7kW. Totaal nou 22kW. Terloops, 2.2kW bron vir 22kW batterye? Dit werk,
so 3½ uur se vol son en my laaier skakel af, alles is vol. En in bewolkte weer hou alles so drie dae voordat ek die Lister se hulp moet inroep.

Nou hier kom ’n interessante punt. Ek het gou agtergekom dat ek steeds nie genoeg rugsteun krag het na my sin nie, maar nog twee batterye sou meer as R30k kos, wat ek nie wou uitgee nie. Lank geloop en dink. Sien, ek het ’n gas yskas wat teen 300W konstant loop (die koste van gas was ’n groot deel van die motivering om oor te gaan op LiPO). Dit beteken 19kg gas per maand teen ongeveer R500/m. Maar die ou yskas kom al amper 15j saam met my en werk goed. Na heelwat dink het ek besef dat die uitweg was om die yskas te vervang i.p.v. batterye te koop. Die nuwe yskas gebruik net 80W en is nie konstant aan nie. Dit het 'veroorsaak' dat ek ook ’n kas vrieskas by gekoop het wat ook net 80W benodig. Die twee saam het minder as een battery gekos en verder nog R500/m se gas bespaar. ’n Goeie kompromie en my krag benodig het omtrent halveer.

Al ons gedagtes moet die volgende patroon volg: as jy nie jou inkomste kan vermeerder nie moet jy jou uitgawes verminder en as ek om my rondkyk, sny sal ons moet SNY.

Vir ’n stoof gebruik ons meestal ’n twee plaat stofie, ’n Elektriese plastiese ketel gebruik minder energie as ’n glas/metaal ketel omdat ek nie die glas/metaal hoef te verhit nie.

En hier is ’n wenner. Koop vit jou LV ’n nuwe druk-kook-pot die elektroniese soort. Hoekom? Want hy werk op 2bar druk (i.v.m. die oues wat op 1.2bar werk), maak taai vleis binne minute sag en gaar en gebruik baie minder krag en tyd as enige ander metode. Voordeel? Die LV 'smile'. Wat wil ’n LV hê? Warm water in die badkamer (en kombuis) en ’n gerieflike kombuis (en baie tyd vir haarself).

Nou kom ons by beligting.

Op Swartbas (plaas) het on 'lead lights' gebruik teen 8W elk.
Op Klein Kortlaagte (plaas) kon ons nie die 'luxury' bekostig nie. (tussen die twee het ek al my kapitaal 'verloor' deur 'diefstal').

Hier, het ek begin met een loodsuur battery (hier is ’n Lister, maar diesel kos geld) en kon dus nie die gewone ligte aandryf nie. Ek het ligte 'gemaak', ek het plastiese versierings-balle met fasette gekoop (O.D. 30mm), ’n gaatjie in geboor en ’n wit LED daarin monteer, drie in ’n ry met ’n weerstand vir stroom beheer en siedaar, hy werk van 12V af en gebruik 20mA. Gou was die hele huis 'belig'. Toe die 'strip LEDs' op die mark kom (of het ek dit ontdek?), het ek sistematies al die ou LED-balle vervang. Teen 50mA per lig. Ons het lank so gewerk, ons kon alles sien en doen wat nodig was. Laas jaar het ek op ’n verbetering afgekom. ’n Vriend wou sy neon lig vervanging (LED strip) waarvan die glas gebreek het weggooi, gou het ek hom oortuig om dit vir my te gee. By die huis het ek die krok met 'cable ties' op ’n 'dowel rod' vasgetrek nadat ek dit getoets het en hy werk nou nog in ons werkkamer (18W). Dit het my weer op ’n ander idee gebring. Ek het vir my van die neon vervangings buise (8W) gaan koop, ou geblaasde lampe se bajonet stert afgehaal en bedraad op die LED buis. Nou hang hulle vertikaal in die plek van gewone lamp aanhegtings en dit werk goed.
Nou-ja, dit alles kom oor die verloop van 18 jaar, sien, dis nie nodig om ’n hoop geld op een slag uit te gee nie, maar maak net ’n begin, dit sal self kleintjies kry, nes radio’s en antennas.

73

Christi ZS4CGR 

 

Fotos  (Klik op fotos om te vergroot.)



 



Friday, February 16, 2024

Fixing a 12v DC to 220v AC "5000 watt" Chinese Power Inverter


I am not going to explain how to fix a Chinese inverter in this Blog posting.  I am however going to tell you what was wrong with it and what to be very careful about when you have one or similar Chinese inverter.  Now let me make it very clear this is not an inverter which you would install in your household.  The reason is quite simple,  it is not a good product and you run severe risks to damage equipment or even worse cause a fire that can destroy you house.  In my opinion I would rather use this unit outdoors in an emergency power situation.  Please note it is not waterproof and care must be taken to protect it during wet or damp conditions.   Take note:  I do not take any responsibility for any mishaps if you buy such an inverter for whatever purpose or reason.

I had this inverter installed on a trolley and it's main function was to run all my LED lights, inside and outside the house during loadshedding periods.  That's all!! No air-fryer, toaster, microwave etc.  This inverter ran from a 100 Ah Lead Acid Battery for nearly a year without any problems even during Stage 6 loadshedding phases.

When I upgraded to a self built, larger and better trolley inverter system my son asked if he could have the Chinese "5000" watt Inverter.  I told him that in my opinion this is not a "5000" watt inverter.  I am of the opinion that the peak wattage is not near 5000 watts no matter what the labels or manual says.  By now one should know that specifications on certain Chinese brands are a sales gimmick.  I  warned my son to draw no more than 2000 watts from the inverter and only in short periods.  Well some people listen to advice others ignore it and rather believe the labels on a product.  

A week later I received a message that the inverter just died one night while in use.  No errors, warnings or LED flashing.  It was dead!!  Asked how many power did they draw, I got a answer that he does not know as the inverter works from the garage to the house.  He brought the inverter to the Shack one day and ask if I would have a look at it.  I opened it up and first look at all the fuses.  None was blown - strange?  Then I tested all the input Mosfet's and components on the input side of the unit.  I could not find any faults.  Well on to the output side.  I removed the four output Mosfet's, measured them and found them all to be open circuit and faulty.  Strange but that is what I found.  No fuses blown and no alarms??  This raises big questions if you look at all the protection that is advertised. None seemed to have protected the unit.  Now to find replacement Mosfet's.  The cheapest replacements would have cost me over R900.00.  My son was not willing to pay that price and the unit found a new use as a "door stopper', just joking.  Before I shelved the unit I noticed that there was an inscription on the PCB that indicate that the unit only outputs 1500 watts.

Moral of the story is that 5000 watt stated in the manual and on the outside label was not correct.  I shelved the project and would use it for parts.  In January 2024 I found 6 Mosfet's for the unit at R63.00 each.  I ordered the Fet's and fixed the inverter today.  It is up and running again but this time around I will adhere a label clearly stating that this unit can only deliver 1500 Watts Output.

All that is left is to thoroughly clean the inverter.  My apologies for the dust and dirt on the unit in some photos but I did not want to clean the unit until I was sure it works as it should.  The fan needs also to be cleaned and oiled as it is making a noise the first few second after starting the unit.

There you have the story of the "5000 watt" Chinese Inverter.  DO NOT believe any insignia on Chinese electronic equipment!! 







Click on images to enlarge. Please excuse the dust and dirt on the last image but the reason being as explained supra.

Tuesday, July 18, 2023

ZS1I Simple Small Projects: Modify cheap Chinese LED light to use during Eskom Loadshedding and Power Outages


 

Now you would ask why modify a cheap led light for loadshedding when you can buy various models at relative cheap prices?  My grandson had four cheap (R34.00 each) led lights that were discarded, due to the cost of having to replace the batteries on a regular basis.  I looked at one of the lights and realized that I could modify the light to use one 16850 lithium battery, which can be recharged. I used one salvaged battery from an old laptop.  The only cost was to buy a 16850 plastic one battery holder for R18.00 from a local Asian shop.  The mod is quite simple.  Just cut the blue as well as red wire from the battery compartment.  The blue wire is soldered to the black wire on the 16850 battery holder and the red wire to the red wire on the 16850 battery holder.  I drilled two small holes on either side of the LED light, one for the black wire and the other for the red wire coming from the 16850 battery holder.  The holder is fixed to the LED light case using double sided adhesive tape. Simple easy mod, yet much more cost effective with a bonus that you can recharge the battery via a small solar panel charger.  No need to buy batteries anymore. This LED light has many uses, indoors and outdoors.  This light provides more than adequate (360 degrees) light to illuminate a medium to small room.  The other three lights were also modified and are now in use again.  Simple cheap and very useful project. Total cost of project:  R20.00.

Images:  Click on images for larger view.

 









Thursday, July 6, 2023

ZS1I Simple Small Projects: 3D Printed Voltmeter Box/Case


I needed a simple voltmeter box/case for the above voltmeter with a range of 4.5-30V DC for my DIY Solar Generator Project that I am busy constructing.

Having a 3D Printer in the shack resulted in the following case being printed after downloading the  STL Files from Thingiverse.

Many thanks to Flip_Schaumal for making his project files available.

The end result is visible in the images below.  I now have a good looking case for the voltmeter mentioned supra.

Images:  (Click on images for larger view.)









Sunday, July 2, 2023

Lippeklap Net 2 July 2023 at 15h30 on the GRHub Network.


Onderwerp:  Hernubare Energie vir die Amateur Radio Hok of Veld Stasie

More almal.  Kom sluit gerus by ons aan op die GRHub Netwerk vanmiddag (15h30) net na afloop van die Bo Karoo Bulletin.  Ons gaan vanmiddag so bietjie kyk na  die opwekking van hernubare energie in die Amateur Radio Kamer.  Nee ons gaan nie oor Eskom en sy probleme gesels nie.  Ek gaan nie nou die aap uit die mou laat nie.  Kom luister en praat gerus saam vanmiddag.  Met 'n tekort aan elektrisiteit asook gas dink ek dit is nodig dat mens opnuut moet kyk na hernubare energie. 

The talk will be in Afrikaans and English!

Hoe skakel ek in by die Net?

• Echolink - Konnekteer aan ZS1I-L, ZS1SB-L, ZS1FC-L, ZS6WDL-R of ZS5PMB-R Neem kennis as die laaste vier stasies nie gekonnekteer is aan ZS1I-L nie, konnekteer dan via Echolink aan ZS1I-L om by die net aan te sluit.
• AllStar - Konnekteer aan node 49355 ZS1I of 28052 ZS5PMB-R
• VHF - 145.550 Mhz Simplex in die Mosselbaai area. Onthou die 88.5 khz CTCSS toon.
• Enige ander Echolink, AllStar herhaler of link stasie wat aan ZS1I-L gekoppel is.
• Gebruik sommer Echolink wat op jou selfoon geinstalleer is.

Sluit gerus by die Lippeklap Net aan op Sondag, 2 Julie 2023 om 15h30 SAST. 

Fotos:  (Klik om te vergroot.)





Monday, March 6, 2023

What is in the Box?


 "What is in the Box?"  Since I published the last posting there were several boxes received with "toys" in it.  I do not like to publish every single electronic item I bought or receive.  However it seems that this is quite a popular topic and that readers would like to see more of these posts.  Please note that I do not publish these to brag or boast about but purely out of interest to readers.

Items:

  • Battery 18650 Li-ion Protection Board 2s 8.4V 3A
  • Battery Charger 18650 Li-ion (6-120V) Charger Controller Board XH-M602 
  • Battery Holder 18650 2x Series or Parallel no Wires
  • Bridge Rectifier 1200V 50A 3 Phase
  • Battery Protection Discharge + Charge Controller Board YX-1708

What do I have in mind for the above modules?  All these components will be used to alleviate the effects of loadshedding in the amateur radio shack and in my home.  The projects will be posted on the GRHub Network Blog when completed.  I will however let the "cat out of the bag".

  • Internet Radio backup battery.
  • DIY Scrap Metal Wind Turbine to charge battery bank.
  • Upgrade the previous Internet UPS Project to cater for Stage 6 - 16 loadshedding outages.
  • Automatic Cut OFF/ON Battery Charger Controller for DIY DC 12-24V Battery Charger Project.



 




Friday, March 3, 2023

Eskom Loadshedding Solutions - DIY Solar Battery Power Supply: Christi ZS4CGR


As to alleviate Eskom's loadshedding several radio amateurs has decided to come up with alternative power supply units that will be used during loadshedding or any other time when there is a need to use such equipment.

Thanks to Christi ZS4CGR for sending images of his latest project in this regard.  Christi stays on a farm and from time to time he activates SOTA and HOTA sites.  He needed a Solar Battery Power Supply for these events and he came up with an ingenious way to host all the components for this project.  Look at the extra battery terminals that he invented.  This gives him the option to easily connect radio and other equipment from the battery.  The solar controller was obtained from Takealot at a very reasonable price tag. 

I personally think that the way Christi is using a salvage plastic drum and other bits and pieces is great.  Not only for nature (salvaging + recycling) but also for his own pocket not having to spend money on an expensive cabinet.

Christi great project and thanks for sharing it with us!!

Images:  (Click on images for larger view.)











Solar Contoller Specs:

Rated voltage-12V/24V

Rated current-20A

Max PV voltage-75V

Max PV Input power-260W[12V]/520W[24V]

New ZS6CM0 70cm AllStarLink Repeater - Alberton

(Click on images for larger view.) Curtis ZS6CMO recently completed his 70cm AllStarLink Repeater.  In the video the repeater was connected ...