Stats: 3,190,597 members, 7,941,275 topics. Date: Thursday, 05 September 2024 at 10:06 PM |
Nairaland Forum / Entertainment / TV/Movies / Satellite TV Technology / Solar Energy, A Complement To FTA (2273186 Views)
UPS Back-up, Also A Complement To FTA / FTA Frequency / Cctv Installation A Complement To Fta And Solar Energy (2) (3) (4)
(1) (2) (3) ... (431) (432) (433) (434) (435) (436) (437) ... (1801) (Reply) (Go Down)
Re: Solar Energy, A Complement To FTA by SolnergyPower: 1:07pm On Jul 09, 2018 |
Solar Power Training JEZ POWER COMPANY LIMITED has started training for the following courses: √ Inverter Installation, √ Solar Panel Installation, √ Inverter & Solar Panel Installation. Workshop registration is on. For more enquiries, 0803.334.3911, 0810.026.7313. JezPower.com Office address: 5, Epirikom Road, Opposite St. Peter's Anglican Church by Wimpey Junction, Port Harcourt, Rivers State. 1 Share
|
Re: Solar Energy, A Complement To FTA by pranil(m): 4:19pm On Jul 09, 2018 |
NiyiOmoIyunade: for topping up you can use a normal float ![]() for temp control, the simplest is to add some additional load in series or parallel which will reduce the heating using PTC elements ( teh resistance changes in response to temp) https://www.aliexpress.com/item/LJXH-PTC-Thermostat-Aluminum-Heating-Element-Heater-Plate-60-120-200-Degrees-AC-DC-24-48/32855627244.html Alternatively use a digital sensor with contactor/SCR ( expensive and prone to failure especially outdoor) https://www.aliexpress.com/item/DC-12V-Digital-LCD-Temperature-Controller-Heating-Cooling-Thermostat-with-Probe-for-Warehouse-Water-Heaters-Micro/32859805084.html But it will be difficult to boil say 100 LTr using 200 /300 watt element alone for the corrosion it is very easy in fact you should be doing it for every exposed terminal - especially batteries - apply petroleum jelly or you can get one of that Nano coating spray sold by car dealers
|
Re: Solar Energy, A Complement To FTA by NiyiOmoIyunade(m): 7:50pm On Jul 09, 2018 |
On my 12v 600w immersion heater, the positive and negative terminals are very close together - less than an half inch clearance - also very small such that it is hard to fit a reasonable gauge cable and terminal lug on them. At bolded, never underestimate human ingenuity/stupidity - I once bent a clothes hanger wire and used it to short a 12v battery - turns out they make very good heating elements - another ocassion, I retrofitted a battery load tester - took out the metallic element, attached 35mm cables and shorted it to a battery with the metal element immersed in a bucket of water - dumped the entire battery into the water within an hour - water was boiling feverishly and the 35mm cable burned my hands when I touched the exposed copper - I soon realised this piece of metal would even take 24v or 48v - only difference was in the quantity of heat generated - imagine 100amps at 24v - I soon abandoned this folly and went on to more productive things. But my question remains - in the below image, how to safely crimp on DC cables to such flimsy connections - I ruled out solder for many reasons pranil:
|
Re: Solar Energy, A Complement To FTA by mrmachine: 8:36pm On Jul 09, 2018 |
Hi house, can somebody suggest a good 5kva chinco inverter with minimal no load consumption. It is urgently needed for an application |
Re: Solar Energy, A Complement To FTA by NiyiOmoIyunade(m): 8:40pm On Jul 09, 2018 |
Zinox IPowerPlus? The no load power draw is about 50watts, it runs at 48v with a 60 to 80amp charger built in for the AC side and an average performing 60amp MPPT controller as well. Has a host of user configurable customizations all done via software settings on the inbuilt LCD screen. It is transformerless and will handle ACs and motors BUT STRICTLY NO RESISTIVE LOADs like iron or microwave. In all things best to keep your loads under 2kw for this machine. Do you have a budget? It costs in the ~300k range. Most likely the price is slightly less by now. You may be able to get a similar Axpert clone without the MPPT built in for a better price. mrmachine: 1 Like |
Re: Solar Energy, A Complement To FTA by pranil(m): 1:24am On Jul 10, 2018 |
NiyiOmoIyunade: easiest will be to attach a T shape Busbar ( piece of Cu flat) The top ( Horizontal part will be connected to two bolts and the Vertical to cable) - can be easily made from earthing flat used in lightning protection . for piece of mind you can even sleeve the whole things leaving enough space for Flat washers to make contact
|
Re: Solar Energy, A Complement To FTA by mrmachine: 8:16am On Jul 10, 2018 |
NiyiOmoIyunade: Thanks Mr Niyi. The issue is that I don't have control over what they would plug o. I would love the one that has no restriction but still appreciable no load consumption. Thanks sir |
Re: Solar Energy, A Complement To FTA by pranil(m): 9:25am On Jul 10, 2018 |
mrmachine: if you have budget you can get victron Multi ( 5 KW )900K NGN ( 10 KW peak ) they have multistage protections and handel overload extremely well and gracefully Zero Load is between 15 W to 30 watt for 5 KW https://www.victronenergy.com/upload/documents/Datasheet-MultiPlus-inverter-charger--800VA-5kVA-EN.pdf https://www.youtube.com/watch?v=4SXtGIx0x5w |
Re: Solar Energy, A Complement To FTA by chris81964(m): 9:29am On Jul 10, 2018 |
NiyiOmoIyunade: My understanding is a bit different. Inductive loads like AC, pumps were more of a challenge for the transformerless inverters due to their low surge abilities. Irons and microwaves have never been an issue. They don't surge they draw a steady amount of powers. Please help me correct my misconception that I have held for years. |
Re: Solar Energy, A Complement To FTA by NiyiOmoIyunade(m): 10:12am On Jul 10, 2018 |
You can use a current limiting device (found on AliExpress) on the AC side. Oga Pranil had previously posted links to such a device - size it for about 1.8kw on a 5kva inverter like the Zinox and you should be safe. Such a current limiting device should cost under 10k I believe. mrmachine: |
Re: Solar Energy, A Complement To FTA by NiyiOmoIyunade(m): 10:21am On Jul 10, 2018 |
Oga Chris. You are probably right in the general case. But for this specific Zinox IPowerPlus I have ascertained it easily gets fried if you use an iron or microwave or other resistive load on it. Perhaps one could get by with resistive loads under 500w but certainly a 1.1kw microwave and 1.3kw iron used separately but on a regular basis ruined my first Zinox 5kva within 3 months and the peak load never passed 2.2kw at any time - meanwhile said inverter runs 2 units of 1hp ACs with ease at another location. After Zinox fixed it under warranty the first time, they warned me strictly to never iron or microwave with it again - same inverter is still firing strong in my Ibadan family house till date. People that use irons and microwaves on the Axpert type inverters typically stack two or more inverters to share the load. chris81964: |
Re: Solar Energy, A Complement To FTA by mrmachine: 10:57am On Jul 10, 2018 |
pranil: Ha Ha, that's way above budget chief. That's why I said chinco inverter with a good build |
Re: Solar Energy, A Complement To FTA by mrmachine: 11:00am On Jul 10, 2018 |
NiyiOmoIyunade: We can't really call them 5kva then 2 Likes |
Re: Solar Energy, A Complement To FTA by chris81964(m): 11:14am On Jul 10, 2018 |
NiyiOmoIyunade: Thank you for the answer. I think Zinox was being lazy. Voltronics power had a serious quality control issues with the Axpert 5 kva units. They failed after so many cycles. There is a video on YouTube that gets into it. They corrected the issue after 2016 or 17 I was told, An Iron heats up for 30 seconds and then stops and can go for another minute before the heating element comes on again for a shorter period. I can't see how that would stress your inverter but wetin I sabi. We used a microwave on the 3 kva Axpert (a big microwave), the inverter died because of a short circuit in the house wiring. The bare wires touched the chassis of the inverter after a Kazeem electrician had done work. It lasted over 2 years with Microwave use. My experiences are a bit different. Does not make me right or you wrong. I hope we are all learning from the experience and the information that we share. 2 Likes |
Re: Solar Energy, A Complement To FTA by NairaBaba: 12:21pm On Jul 10, 2018 |
NiyiOmoIyunade: Oga Pranil, Please help post the name or link to the current limiting device. Thanks |
Re: Solar Energy, A Complement To FTA by S007: 12:46pm On Jul 10, 2018 |
NiyiOmoIyunade: Very strange. I am surprised a 5kva rated inverter will find it difficult to power a 1.3kw resistive load. I suspect the nameplate rating of the inverter does not match the actual real rating. Well, now we know. Thanks for sharing 1 Like |
Re: Solar Energy, A Complement To FTA by zellfoxx: 2:55pm On Jul 10, 2018 |
chris81964: ![]() ![]() 2 Likes |
Re: Solar Energy, A Complement To FTA by makawhy201: 4:15pm On Jul 10, 2018 |
checkout the link below. https://www.aliexpress.com/item/-/32863099171.html?spm=a2g0s.13010208.99999999.518.61a43c0063gJhA NairaBaba: |
Re: Solar Energy, A Complement To FTA by NairaBaba: 7:06pm On Jul 10, 2018 |
makawhy201:Thanks |
Re: Solar Energy, A Complement To FTA by DMerciful(m): 9:41pm On Jul 10, 2018 |
Same as mine... Inductive loads are the biggest challenge to transformerless inverters during to high start surge chris81964: |
Re: Solar Energy, A Complement To FTA by richmon74(m): 10:24pm On Jul 10, 2018 |
NiyiOmoIyunade: I think this position is very personal to your own case and it doesn't conform to any electrical standard. I feel it will be proper you keep it as a personal experience such that you will not mistakenly mislead someone else. 7 Likes |
Re: Solar Energy, A Complement To FTA by pranil(m): 10:59pm On Jul 10, 2018 |
mrmachine: It is really 5KVA 4 KW at 25 DEG C you have to derate it on heavy load ( as the ambient may not be ideal ) so safe bet will be 3 KW at 40 DEG which means on heavy loads it will suffer - I normally run my 10 KVA inverter regularly at 7 KW ( inverter AC load so nearly unity PF) But I have an exhaust fan which kicks in at 31 DEG ambient to keep things cool Even strong inverter like Victron is only 3.7 KW at 40 DEG ambient ( mind you it is actually 4 KW at 25 DEG C) while ipower is 4KW. The newer models I posted a while back are designed now for 5 KW at 25 DEG C
|
Re: Solar Energy, A Complement To FTA by pranil(m): 11:04pm On Jul 10, 2018 |
NairaBaba: https://www.aliexpress.com/item/High-quality-current-limiter-lirait-appliances-0-5A-32A-tutamen-control-switch-demand-limiter-free-shipping/32417613258.html My experience was not so great 2 failed out of 3 in 6 months ) I might have one lying around somewhere rated 10 amp ( 2.5 KW) ( probably because I was experimenting to reduce current on the generator drawn by a heavy duty charger ) |
Re: Solar Energy, A Complement To FTA by pranil(m): 1:08am On Jul 11, 2018 |
makawhy201: Nice find. Tomzon is more reliable than the brand I suggested |
Re: Solar Energy, A Complement To FTA by makavele: 6:04am On Jul 11, 2018 |
richmon74: Well said !!! |
Re: Solar Energy, A Complement To FTA by NairaBaba: 7:21am On Jul 11, 2018 |
pranil:Thanks |
Re: Solar Energy, A Complement To FTA by NiyiOmoIyunade(m): 9:21am On Jul 11, 2018 |
So I let this sit for a while, then I went back to reread the original question and responses offered. I agree with Oga Chris, DMerciful and yourself about the typical constraints of transformerless inverters in general viz a viz the type of loads they can easily carry and I said as much in my response to Oga Chris. When I think about it, how a device actually behaves with a load is specific to its own internal design and operating environment - so I have been at a residence where they used a 1.4kva/1.5kva Luminous to power a medium sized freezer and large fridge for years with zero trouble, yet I have a Sinergy 1.5kva (similar Indian design) that always beeps overload and trips off when my mid-size fridge's compressor picks up. Similarly and if I recall correctly, Zeestone once told me of the troubles he had using a PSC Solar or was it Contec 2.5kva inverter to power a large fridge/freezer - it kept beeping overload and tripping off. Now one asks, why would a 150w load that surges to say 1kw max present a problem to my 1.5kva inverter when it is the only load and ditto why does a 2kw/2.5kva inverter struggle with a 300w compressor? I used a 3kw Rubitec(Must PowerStar IR type) for about 2 years (replacement for my Zinox) and routinely loaded it 2.8kw and it ran without trouble - I would have the 1hp AC on plus ironing or microwave so always either AC + Iron or AC + Microwave and other light houseloads including fridge and water dispenser, sometimes 2hp AC + Fridge + Water Dispenser and it ran. Yet I know a location who bought one of the earlier 7.5kva Prag inverters which had a similar MustPower design and the machine broke several times on running 2 ACs (2hp and 1.5hp) + 2 freezers and other general loads till the owner (a restaurant) abandoned it. One can go on and on. Anytime Zeestone tries to get me to try a new product e.g new 5kva Inverter or new battery brand or any new stuff for a client, I always say 'let us stick with the one we know that is already tested and trusted' because I believe 3.5kva in one inverter brand may behave very differently than another 3.5kva of another brand - beyond the transformer type or design, many other aspects of the internal setup and operating environment will come to play. This Zinox in question, I have seen used with 1hp AC and other basic houseloads and no trouble, as I have said in this post and several others before, it is an excellent inverter with many features provided it is used within its design limits and remember I actually recommended it to the OP as a good choice. In my own case I used it only with either of my iron or microwave (didnt dream of using AC on inverter at the time) and it broke within 3 months - the service center diagnosis was "power card damaged due to overload" - since the inverter has a digital display and I was always monitoring the load readout, I know it never passed the 2kw mark and it was mounted on the balcony yet the service center said it was overloaded and asked specifically if I had used microwave or iron on it. Again the unit I have was an early buy in 2015/2016 - perhaps newer models have all the flaws fixed. I think Oga Pranil mentioned loading it with 7kw of ACs (he has 2 units in parallel to make about 10kva), it would be nice to see how it holds up to running 7kw of heating or resistive loads for a while ![]() richmon74: 2 Likes |
Re: Solar Energy, A Complement To FTA by NiyiOmoIyunade(m): 9:40am On Jul 11, 2018 |
Re: Solar Energy, A Complement To FTA by Barezzi(m): 10:43am On Jul 11, 2018 |
I use mine with a 2kw hotplate and 2kw electric kettle simultaneously every morning 5 days a week for almost a year now. This is with other loads of fridge, booster pump and other base loads. I use a 10kva Gennex Inverter (Axpert clone). |
Re: Solar Energy, A Complement To FTA by NiyiOmoIyunade(m): 11:10am On Jul 11, 2018 |
Choi!!!! ![]() ![]() ![]() That is some serious loading - 4kw of heating plus say 1kw of other loads? Perhaps we can try adding on 2units of 1kw water heaters to get us to the 7kw mark and then see how it goes. But more seriously I am impressed with those numbers - I wouldn't put more than 3-4kw of heating on my current 6kw MustPower - pretty sure it would handle it but I don't wanna brick the machine just yet. It is either the quality and ruggedness of the Axpert types have been dialed up since my own 2015 purchase or I got a lemon. Everyone who I ever recommended it to, I advised not to use resistive loads on it and all are doing good so far - in light of these latest reviews I might need to revise my position. Nice one Oga Barezzi. Barezzi: 3 Likes |
Re: Solar Energy, A Complement To FTA by TSHIRT2: 2:54pm On Jul 11, 2018 |
Can a 1440w, 2.4kva mercury inverter or any other brand of same rating power 0.75hp 550w borehole pump machine . |
Re: Solar Energy, A Complement To FTA by S007: 3:14pm On Jul 11, 2018 |
Barezzi: This must be a very good ketekete(horse) ![]() Gennex Inverter (Axpert clone) bookmarked. |
(1) (2) (3) ... (431) (432) (433) (434) (435) (436) (437) ... (1801) (Reply)
FTA Live Football Matches Announcement Thread / Free To Air Satellite Tv General Thread
Viewing this topic: freeAgent99(m), litaninja(m), oluplus(m)
(Go Up)
Sections: politics (1) business autos (1) jobs (1) career education (1) romance computers phones travel sports fashion health religion celebs tv-movies music-radio literature webmasters programming techmarket Links: (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) Nairaland - Copyright © 2005 - 2024 Oluwaseun Osewa. All rights reserved. See How To Advertise. 93 |