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UPS Back-up, Also A Complement To FTA / FTA Frequency / Cctv Installation A Complement To Fta And Solar Energy (2) (3) (4)
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Re: Solar Energy, A Complement To FTA by Abif: 2:35am On May 14, 2018 |
kiekie1: I appreciate your response. I have actually contacted Solar depot but the are out of stock. Let me ask a question. Can I use the Victron battery ballancer to combine the US battery with a trojan? I don't know if anybody has tried it. I want to know if the balancer can help to combine batteries of different makes, but both types of batteries are flooded lead acid. |
Re: Solar Energy, A Complement To FTA by damola1: 5:30am On May 14, 2018 |
I need the best batteries. 24V. 200ah. so maybe: 12v 200ah x 2. Kindly mention me with your details. Buying once I can confirm it's the very best. Brand new only please. |
Re: Solar Energy, A Complement To FTA by Cheny(m): 7:56am On May 14, 2018 |
NoMoreTrolling: Bro, I think ur problem is with ur batteries because with 2000 watts of solar power, u should be at least getting a good dose of energy from ur 200ah ×4 battery setup. As for ur mppt roasting,enuf has been said about it and I'm sure u hv learnt ur lessons though in a hard way,but d good thing is that you have acquired knowledge from this experience. 4 Likes |
Re: Solar Energy, A Complement To FTA by sharks776(m): 10:05am On May 14, 2018 |
Hello everyone, I'm planning on increasing my solar panels, I currently have a total of 780 Watts (130w x 6) arranged in 2*3. Although, My new cc max PV is 1500w at 24v, which I plan to maximise. My problem is can I add 6 more panels (in 2*3) which will total 1560 (a little above the specified max pv). The cc is Fangpusun flexmax mppt60a. Also, any idea on a good tier one 130w PV? |
Re: Solar Energy, A Complement To FTA by Dam5reey(m): 10:29am On May 14, 2018 |
sharks776: You are good to go.. Mppt control has current limiting function.. You can't even get 1560 out 1560 watts.. 2 Likes |
Re: Solar Energy, A Complement To FTA by Barezzi(m): 10:32am On May 14, 2018 |
Yes you can. sharks776: 1 Like |
Re: Solar Energy, A Complement To FTA by efuro(m): 10:52am On May 14, 2018 |
sharks776: With 6 extra 130w at 2x3 or 3x2 for flexmax 60A, you have not really max it out. I will recommend you go with 3x2 to enjoy flexmax mppt function (at about 1A for every 30w extra ur PV can make). Pls note, if you have PV of different make and type, Going above 3 in series will give your flexmax hard time to read during instantaneous sweep. At the end you have production always beneath optimal setpoints for your array. Above from my diy practice. |
Re: Solar Energy, A Complement To FTA by hancock(m): 10:56am On May 14, 2018 |
Good morning House I recently aquired 4 sets of Monbat Batteries with a new Felicity 5KVa 48v inverter. Will likely go Solar in the next couple of months. In order to maitain a 50% DOD regularly on the batteries, is their any battery monitor i can attach that would triger and alarm/shutdown when the batteries discharges to a certain value? Recently saw this on aliexpress, dont know how useful it will help out towards what i intend to achieve. https://www.aliexpress.com/item/High-quality-Display-DP50V5A-Constant-Voltage-current-Step-down-Programmable-DC-Power-module-buck-converter-voltmeter/32656651549.html?spm=a2g0s.13010208.99999999.262.ZlXUgO |
Re: Solar Energy, A Complement To FTA by zeestone99(m): 10:56am On May 14, 2018 |
sharks776: Yes you can, call/whatapp 08117398294 for purchase n professional installation. |
Re: Solar Energy, A Complement To FTA by zeestone99(m): 11:01am On May 14, 2018 |
damola1: Call/whatapp 08117398294 for monbat, spectra. |
Re: Solar Energy, A Complement To FTA by zeestone99(m): 11:05am On May 14, 2018 |
NoMoreTrolling:Sorry bro, jst contact a professional to audit ur system, so u v in mind things to replace wen the fund is available. gel Ba3s are fragile compared to AGM. 1 Like |
Re: Solar Energy, A Complement To FTA by Barezzi(m): 11:53am On May 14, 2018 |
Thank me later Victron Battery Monitor hancock: |
Re: Solar Energy, A Complement To FTA by hancock(m): 12:05pm On May 14, 2018 |
Barezzi:Thanks Barezzi for this. 1 Like |
Re: Solar Energy, A Complement To FTA by NiyiOmoIyunade(m): 12:52pm On May 14, 2018 |
***Edit*** Forgot to mention that the link you posted appears to be a 'buck converter' which will step down voltage and/or current between an incoming power feed and an output - it is not suitable as a battery AH monitor and also it seems to be rated for only 55v and 5amps which would be way under what your system would be doing either charging or discharging ================================================ A Battery Monitor/AH Meter/Coulomb Counter like Victron (Premium Price) or Fangpusun (Victron Clone at Value Price) or other solid premium variants like the Bogart Trimetric e.t.c will tell you how many AH you have put in or removed from your battery bank as well as an approximate battery percentage readout. All the AH meters above will set you back from 35k to 150k on the average - if your sole intent is to cutoff at 50% DoD then you can use a cheapo battery voltage monitor (sells at 5k) in conjunction with a 'Battery DoD at X-voltage' chart to know that a 12v/24v/36v/48v (depending on your system nominal battery voltage) reading on the voltage monitor while your batteries are under load indicates an approximately 50% depth of discharge - you can use a higher cutoff for safety e.g 48.8v as 50% LVDpoint in a 48v system. In my experience clients will always ignore this safety cut-off point and drain the batteries further anyways so if I had to choose I would go the following route in order of priority; 1) Size your battery bank for 2 to 3 days of autonomy so you never even get to the LVD point or 50% DoD on an average day. Your battery life will greatly increase by this practice 2) Install a LVD sensor and disconnect mechanism so that power cuts off once you go below the cutoff voltage for a preset time. Might have to rig up something yourself to get a good price point if your inverter does not have a DoD cutoff feature - Victron now has a 48v battery protect with this feature but it's pricey 3) Use a voltage monitor readout to approximate DoD - if possible install one voltage monitor per battery so you can detect individual imbalances or a failing battery quickly. I highly recommend this route as an early warning trigger to forestall battery issues regardless of any other mechanism you may deploy. 4) Last on my list is a battery monitor - only useful if you want value added features like knowing how much watts or amps appliances are consuming, net amps into battery and amps produced by solar or grid based source. Although I use an AH monitor, I believe now I could do without it using any of the other 3 options above. Some brands like Victron would still monitor midpoint voltage deviations in the battery bank but I'd still rather have a small cheapo monitor per individual battery. hancock: hancock: 1 Like |
Re: Solar Energy, A Complement To FTA by hancock(m): 1:16pm On May 14, 2018 |
Thanks Niyi once again for always putting out well detailed explanations to problems Im not usually at home but i have family members that are. left to them they dont mind draining the batteries to 0v . felicity inverters according to their manual have low battery alarm at 42v ( for a 48v system). This is very very poor I just need a device (cheapest i can get) that will triger a continous alarm at a preset voltage value of 48.8v (50% DOD) If you know of any other cheap device that can do this task, I'm all ears. NB im not a techie guy when it comes to electricals so i cant rig or hold a screwdriver close to any electrical devices even if my life depend on it 2 Likes |
Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 1:16pm On May 14, 2018 |
abunafiu2: i tried uploading this review severally over the weekend but the spam bot keeps deleting my post and banning me for 24 hrs. strange because i don't see anything that remotely resembles spamming in my post. i know the bot has a loathing for special characters and i tried to minimize using those after the first ban but it still had to do it's thing again the second time. i will try again to upload the review. if it gets deleted again i might resort to posting a scanned copy. |
Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 1:23pm On May 14, 2018 |
all, recall that i installed my solar water heater over a year ago and i've been using same effectively since march 2017. i will now proceed to do a mini review of my experience: the good, the bad and the downright shameful: nameplate specs product name - protek (white label) type - non pressurized integrated solar water heater capacity - 300l installation the installation presented a series of challenges when i had to decide on either a roof mounted structure or erecting a separate water tower for the water heater. at the end i settled for the later partly because of the weight and also ease of access for future maintenance issues. so, after the decision was made, the rest was easy. retrofitting the existing bathrooms, toilets and kitchen with new copper tubing was a breeze and my plumber was up to the task. then came the commissioning part. coming from a background of electrical mains heated water heaters with the likes of ariston, this was a new experience for me. i remember my first bath with a solar heated hot water, it's a feeling out of this world. max temp recorded from march to somewhere around june (before the onset of everyday rains) was around 77 degrees celcius while the lowest was about 32 degrees celcius between july and september (when the everyday rains set in). |
Re: Solar Energy, A Complement To FTA by NiyiOmoIyunade(m): 1:25pm On May 14, 2018 |
Lolz. Slowly and surely you will get more techy. Based on all you have said and with a new inverter with variable DoD out of the picture, I think a Low Voltage Disconnect type device is what you need - Oga Pranil has plenty of experience in this area and I also recall Oga Sinistrian recently rigged up an LVD device too. I hereby drag them into this matter - Oga Sinistrian is overdue to give a tear down of his LVD project anyways. CC Oga Pranil and Sinistrian hancock: 1 Like |
Re: Solar Energy, A Complement To FTA by Barezzi(m): 1:57pm On May 14, 2018 |
Lol Georged1 has been banned again The devil is a liar, you must complete your review baba 1 Like |
Re: Solar Energy, A Complement To FTA by sinistrian(m): 3:52pm On May 14, 2018 |
NiyiOmoIyunade:I built my own LVD because I couldn't find any inverter or device that could reliably cut the power at 50% DOD. The circuit below is what I used, please forgive the lack of professional terminology as I made use of my elementary electrical knowledge since secondary school. The BMV700/702 has a means of effectively tracking DOD as Barezzi has already suggested, so it's the crucial element here. If you want to use voltage levels for your cutoff point instead of a battery monitor, a programmable inverter with dry contact terminals (like the axpert) can also work with this setup. The dry contact device (in my case, the BMV because I already had one) is connected to the battery terminals in series with a 10,000+ Ohm resistor (to reduce the energisation current, we can't be wasting precious battery power), as well as a normally-open DC-AC solid state relay (SSR). I chose a normally-open relay because I only want current passing through it when needed, as opposed to all the time. When the BMV DOD condition activates the relay, the SSR is energized and triggers the AC contactor (AC/AC) which is a normally-closed device. When the contactor is energized, the load circuit is interrupted and all output from the inverter is cut off. No matter who is watching TV at the time. Trust me, this pisses off The SWAMBO all the time but I need to save my batteries. The BMV relay only resets when the SOC rises back to a set value (this is configurable too) and then all loads are restored. 3 Likes
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Re: Solar Energy, A Complement To FTA by Barezzi(m): 4:13pm On May 14, 2018 |
@Sinistrian, Nice! Looking at your sketch, the connection to the load seem to be at the same potential. Is that a mistake? If you add a timer switch in series with the bmv, you can switch on your heavy loads between say 8am-4pm as long as the battery soc is above say 75%. sinistrian:Peace of mind guaranteed. No fear of anyone draining your bank to dangerous levels. 1 Like |
Re: Solar Energy, A Complement To FTA by sinistrian(m): 4:28pm On May 14, 2018 |
Barezzi:Same potential as inverter input, yes. The live passes through the contactor while the neutral feeds directly from the inverter. Here are the contactor and SSR: https://www.aliexpress.com/item/CT1-2P-25A-1NC-1NO-220V-230V-50-60HZ-Din-rail-Household-ac-contactor/1688946996.html?spm=a2g0s.9042311.0.0.79224c4duxKkn6 https://www.aliexpress.com/item/solid-state-relay-SSR-10DA-10A-actually-3-32V-DC-TO-24-380V-AC-SSR-10DA/32606149138.html?spm=a2g0s.9042311.0.0.27424c4dpEPjPr 2 Likes
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Re: Solar Energy, A Complement To FTA by NiyiOmoIyunade(m): 5:43pm On May 14, 2018 |
Oga Sinistrian. This is nice! Very nice and clear. You have managed to simplify a concept most find difficult to understand not to talk of explain. Kudos and many thanks sinistrian: 2 Likes |
Re: Solar Energy, A Complement To FTA by pranil(m): 8:23pm On May 14, 2018 |
hancock: That is a wrong product in the sese if you want to install a meter to measure battery you better install one with AH measurements a cheap but reliable version is https://www.aliexpress.com/store/product/DC-100v-50A-LCD-Combo-Meter-Wireless-Voltage-current-KWh-Watt-Meter-12v-24v-48v-Battery/2792045_32867047351.html?spm=2114.10010108.1000023.1.5a7958b8QLYjLV if you want high quality but costly stuff then many suppliers here can sell you the Victron /Fangupson BMV 700/702- https://www.victronenergy.com/battery-monitors/bmv-700 1 Like |
Re: Solar Energy, A Complement To FTA by pranil(m): 8:29pm On May 14, 2018 |
sinistrian: The new BMV 712 has a latched contact which draws very little current when closed - I recently installed one for my lithiums as the drain on lithium is more serious issue than Lead acid 1 Like |
Re: Solar Energy, A Complement To FTA by Barezzi(m): 8:33pm On May 14, 2018 |
The bmv's contact can be connected directly to a contactor. No need for an intermediary relay. Add a 1A fuse in series to protect your equipment. 2 Likes |
Re: Solar Energy, A Complement To FTA by pranil(m): 8:46pm On May 14, 2018 |
NiyiOmoIyunade: Another simple design will be to use NC contact of BMV in series with a AC contactor coil. the AC contractor will be in the output of the inverter and the inverter if available can be set to power save mode So it uses minimum power from the battery when idling. Whenever the SOC is below the set value the BMV contact will open, the contactor coil will de-energize and output to the house will be disconnected I had used similar scheme few years back but only to start the gen and disconnect heavy loads of the house. Nowadays the Victron Quattro makes life much easier with it's dual output, Battery life algorithms and SOC based ESS - see my screenshot in the morning. The system will not allow washing machine unless SOC is 100 % but then the SOC can drop to 60 % before it will disconnect non-critical loads. forcing the family to start washing machine after 9 /10 am depending on the day . if the weather is bad and the battery cannot charge next day it will raise the lower limit to 65 and so on ensuring the batteries reach absorption every day and don't get abused 3 Likes
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Re: Solar Energy, A Complement To FTA by ola28: 9:15pm On May 14, 2018 |
FOR SALE EPEVER(itracer) MPPT CHARGE CONTROLLER 12/24/36/48V 60A @100K PLS CALL OLA ON 09057285592 2 Likes
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Re: Solar Energy, A Complement To FTA by Ogoli: 9:38pm On May 14, 2018 |
Hello Team I need an inverter. How do I go about it. Enough of the light whahala. I need to power 2 fans, bulbs & TV set |
Re: Solar Energy, A Complement To FTA by duwdu: 9:57pm On May 14, 2018 |
pranil: This is brilliant... I saw what appears to be the Quattro's colour monitor component on solardepotng for 180k, but couldn't immediately see how fundamentally important its role could be. Many thanks for the education, pranil. And thanks to you, hancock, for rolling out those relevant questions, to begin with. ........ P34c3 ..... ... 1 Like |
Re: Solar Energy, A Complement To FTA by zeestone99(m): 10:31pm On May 14, 2018 |
Ogoli:call/watapp 08117398294 for 1kva setup |
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