Pink7
-
Posts
642 -
Joined
-
Last visited
Content Type
Profiles
Forums
Downloads
Posts posted by Pink7
-
-
1 hour ago, Muhendis said:
Yes. You can use an ATS if you don't mind a second or so delay at switchover.
This device has a relay powered from the primary input. If you lose that then the relay drops off and connects a motor to the secondary input. The motor changes the MCB's over to the secondary supply.
The good news about swapping between battery and solar is that they seamlessly support each other. For example. If the solar is a bit low and you need more power, the batteries will supply it. If you don't have enough of either and the utility supply is also down, get the beer out of the fridge quick before it gets warm.
Thanks, this is very interesting i need to research this.
Pink
-
31 minutes ago, Muhendis said:
The MPP units have one main pcb with heat sinks and power devices on it. This pcb is available as a spare part and is obtainable from MPP. The top section of the box is the charge controller section which never gave me any problems but if the main pcb fails, as one did for me, battery charging stops. All eggs in one basket. Most manufacturers do it this way. My personal preference is to keep different functions in different boxes. Another weird feature is that the MPP units suck air out of the bottom (using concord engines by the noise they make). I would normally suck it out the top. The disclaimer is that I last used the MPP inverters over three years ago so my comments may not be applicable to todays models.
I fully understand your belief in single components, im the same when it come to computers. I only want pc i built myself with components i know and i can easy change a single component if any issue. What i really like with all in one unit is the automation. That it will swap from solar to batteries when no power then to grid if no solar power or battery power. This can be done with single components too?
Pink
-
14 minutes ago, Muhendis said:
That's a good question. Quite frankly I don't know the answer. The problem is, even knowing what to look for is no guarantee of getting a long lived, reliable product. For me the home built/cobbled together unit I am currently using is the best but that's really not a recommendation because to do it requires years of electronics knowhow. Getting a locally sourced unit may offer a reasonable level of backup but at a price. Purchasing from China will be far less expensive and the specs. are usually quite accurate however the Chinese have been known to cut corners in the quality department occasionally and if you want replacement parts under warranty that may be fine but you will need to pay postage and any applicable import fees.
If I was starting up now I would take a long look at as many reviews as possible and let that influence my decision.
Yes im looking and searching around. I like MPP but its Thaiwan so maybe not easy to maintain if parts will broke under the way. A part of me like to support businesses here in Thailand, but generally i see low quality china imports who is over priced and no warranty to believe in. What is generally the weak part or the problem with the Hybrid inverters?
Pink
-
2 hours ago, Muhendis said:
Yes, they got issues and broken. The first inverter as part of the kit, was 8kw 96v low frequency with two inputs for the internal solar battery charger. There was just one combiner box which took all the PV strings to give a single output. Foshan assured me that the single output was ok to connect to the two inverter inputs. This, after some months, destroyed the charger which for which Foshan quickly sent repair parts and a second combiner box. All worked reasonably well except that the inverter was noisy, and my level of confidence in it was low. The reason for the noise was poor filtering of the sine wave and hence transformer rattling. Also the batteries as part of the kit were 10% lighter (less lead) than other manufacturers. Wish I had known all this prior to purchase.
Changed to 3 x 3kw 48v MPP high frequency inverters which were noisy and two were destroyed by lightning.
Replaced these with a Sweetpower 8kw inverter and two separate SRNE charge controllers. The inverter stopped after three years. Discontinued product so no spares.
Replaced the sine generator pcb assembly with a diy unit from China which actually now works better than the original but then I did a few of my own mods to it as I'm quite good at that sort of thing. I have a spare MPP inverter with working charge controller and a spare 96v Foshan inverter without a working charge controller. So if anyone wants...........
You got lots of experiences then on inverters. What you would buy now if you was starting up now ( 8kv capacity)
Pink
-
1 hour ago, Muhendis said:
The original installation came as a kit, which included the panels, from Foshan Tanfon. The panels were allegedly 200W but the rating plate worked them out at 178w.
I have no idea who made them but I did manage to get the broken ones replaced almost free of charge.
The setup has been through several iterations always with 800Ahr batteries and various 8kw inverters.
I have absolutely no Idea how much I produce but I have a woodworking shed with plenty of power tools and, being a farm, a small welder several water pumps and a house full of wife and mod. cons. All works well from 8kw and batteries are usually full by lunch time. I am connected to the grid after a seven year wait but only use grid power for my mean old rice mill. I have an ATS which I use for the occasional grid power connection.
I'm not too sure where it is but there should be a schematic of it somewhere on here. Probably in the "car port roof on a budget" thread by Crossy.
various 8kw inverters... means they got issues or broken?
Pink
-
3 hours ago, Muhendis said:
Looks good, what solar panels you use? What type setup you have? And how much you produce?
Pink
-
1 hour ago, Muhendis said:
My roof is exact north and south (0 degree) then House is in west side. so my garage roof not much sun after 1700 at this time. How this will be at other times of year im not sure yet, but looks quite ok now. Regarding under panels: i had plan to connect each side serial (2 ports on the inverter)
Pink
-
36 minutes ago, Muhendis said:
Those batteries are indeed a find. Wish I needed them now...........
This look like in the range i have been looking for batteries. 2 of this in parallel would be a good start i guess.
-
1
-
-
I think im going to place my panels on both sides of my roof (North and south) from what i understand how the sun move here. My roof is 15 degree. So i guess i will not get full effect on all panels at same time so guess i need to calculate in some extra panels..?
Pink
-
16 minutes ago, Crossy said:
The best laid plans of mice ...
The extra couple of kW from 2 x 5kW units could be a handy buffer when the unexpected load comes along.
Ok i will look into that, its maybe a better size to deal with
Pink
-
1
-
-
I had a plan and hope for not need more than 8kw, alternative 2x5kw, the unit cost almost 50% of the max so maybe should be considered. I have a secondary building with garage storage/hobby room etc where i had plan to place the inverters, and panels on the same roof. so the noise is no problem. Good point on start currents. Im fully covered with inverter units. I have a Mr slim 18000 BTU running 24/7, 2 large inverter refrigerators/freezers so as i write in another post im happy to see my electric bill use to be no more than 3xxx/month
Pink
-
1
-
-
-
Im planing for a MPP MAX series 8KW 48Vdc, with near 8000w panels so i could cover our usage most of the time. when sun, home should use solar, the when no sun load from batteries, when no battery (for example raining season) load from grid. I will probably not have much more than 24 hours coverage capacity with batteries. I need to work some more on budget and setup, rough budget 150k: Inverter 40k + Panels 60k +battery and others 50k. Where you will order the HYD 5500-EP and what is the cost? Look like a quality product.
Pink
-
I have already a water purifier with 3 different filters
Pink
-
I have set up some water thanks who collect rainwater, then one of this thanks is set up to clean water for drinking, so a need away to get water from the other thanks to the drinking water thank.. a not to big mobile pump maybe?
Pink
-
I was think going without export, look complicated with to much paper etc. Or do i need to apply anyway? My main idea is to have some battery storage so i also have power, when the grid power supply is down.
Pink
-
I Think a Hybrid Inverter would be a doable way to get up a diy solar project. Hybrid Inverter look to be over priced in Thailand, so i looked at Mppsolar from Taiwan. I think i see it commented some places here some experiences on get this units in to Thailand . Anyone have experiences on this to share? How much will the custom etc add up? Im looking at a unit who cost around $950 ( $1100 shipped with DHL)
Pink
-
1
-
-
Thanks for that, I have lots of something similar i used in my ceiling but this maybe thicker?
QuoteMany ways to fasten. I would rather build up of the roof to keep the PV's cooler and more efficient. TOA sells aluminum braces 15Bht per meter. Right angle brackets to fix PV'S 5 Bht each.. Not sure of price of tech screws but needed... Less holes need drilling through the roof to fix this way....
-
13 hours ago, Crossy said:
Our "real" usage corrected for the solar was:-
Jan 1239
Feb 1167
Mar 1207
Apr 1495
May 1870
Same equipment for the same hours every day, the only thing that changes is the weather.
Thanks for the info..
Pink
-
Very nice project, i believe diy is the way to get economy in a solar project. I like your diy rails for the mounting.. I have the steel roofing who is common here and did read solar panels could be placed direct on the roofing, the shapes on the roofing works as rails. If i go that route i need some way to fasten the panels, any ideas?
Pink
-
Yes its really hot days now. I try to calculate actual power usage, so i guess this usage is in the higher end of the scale.
Pink
-
Hi bankruatsteve, all is Inverter, i was surprised my usage was not higher.. But i guess inverter units doing the magic,
Pink
-
1
-
-
Correction, it should be 1000 kwh/month
Pink
-
I have looked over my electric bill to calculate kvh and daily watt usage ( considering solar setup) I use 1000 kvh/month as i see on billing from our meter. I have a 18ooo btu aircon, pc, 55" screen, 2 large refrigerators running 24/7, then 900 btu aircon, 55" screen and lights ++ 25-50% time on. 1000 kvh/month should give a average usage of 1388 watt/hour. Much lower than i expected. Did i got a kind meter?
Pink
Where To Buy Solar Hybrid Inverter And what to buy
in Alternative/Renewable Energy Forum
Posted · Edited by Pink7
So the ATS works on 2 sources? If i want to use solar power from inverter( not inverter via battery) ?
Pink