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Nairaland Forum / Entertainment / TV/Movies / Satellite TV Technology / Solar Energy, A Complement To FTA (2277353 Views)
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 NiyiOmoIyunade(m): 6:24pm On Nov 11, 2017 |
For the 4kw/5kw and above the big fan on the AC end/opposite the battery end of the inverter seems to be always running. I keep mine on the outside balcony so the noise doesn't really bother me. For the 3kw and below, the fan only kicks on when the internal temperature rises to about 60 degrees C and goes off as soon as the inverter cools down a little. The fan in these units is a lot quieter. Considering its a chinco inverter, I am undecided which I should find more reliable - the always on fan or the one that kicks on only at a particular temperature - I can say though that I have some of them in service for years now and never yet needed to change a fan and of course the load carrying ability of any of the units is outstanding - I run a 2kw microwave and 2hp AC off the 3kw unit (not simultaneously of course but I do that for the 5kw sometimes ![]() Where I find them very unreliable is the charging function from the mains or generator - very finicky and prone to spoiling in a short while - I have an unverified theory that the charging function fails very quickly when using a pulser/desulfator on the battery bank the inverter is connected to - perhaps the internal components are sensitive to the transient high voltage that the electronic pulsers/desulfators put out. idsolar: 1 Like |
Re: Solar Energy, A Complement To FTA by abunafiu(m): 8:07pm On Nov 11, 2017 |
NiyiOmoIyunade: You're 101% correct sir. Those inverters are super. Despite the fan issues. 1 Like |
Re: Solar Energy, A Complement To FTA by earthrealm(m): 8:20pm On Nov 11, 2017 |
NiyiOmoIyunade: i have a 4kva 48v muspower inverter with a desulphator hooked to it. the fan only runs when the temp hits 64deg, and sometimes when desulphating. yeah, it doesnt like being charged by then, probablly cause of flunctuating voltge or frequency....maybe diesel gen with more stable output wudnt hv the same effect. 8kva HT gen output isnt so clean jumps around intermittently from 212v to 235v...n that affects the inverter....what i do is to lower the charging current to about 22amps....and its fairly stable at this seting, if i get greedy and want higher amperage...the charging trips/fluctuates off n drops to 7amps, 2amps, 11amps etc.. my only grouse with it is the high internal consumption - wch peeps here say is upto 100w for the 4kva models and above 2 Likes |
Re: Solar Energy, A Complement To FTA by abunafiu(m): 10:00pm On Nov 11, 2017 |
earthrealm: The experience is the same as my 4kw 48V unit. Its been a long time since I even used the AC charger. My 4kw solar array does all the charging. The way the unit Handles large loads gives me joy. I am not worried about the idle power consumption. 1 Like |
Re: Solar Energy, A Complement To FTA by kiekie1(m): 7:46am On Nov 12, 2017 |
idsolar: Hello My Oga , don't mind the fan because that's the way the higher model fans blow due to its high surge capability for longetivity sake. Its basically an AC fan unlike some inverters which uses thermostatic DC fans. Thanks for the patronage ... Nagode ! 3 Likes |
Re: Solar Energy, A Complement To FTA by kiekie1(m): 7:54am On Nov 12, 2017 |
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Re: Solar Energy, A Complement To FTA by Saipro(m): 8:53am On Nov 12, 2017 |
NiyiOmoIyunade:All points (including the desulphator ruining the charging circuitry) are confirmed from personal testing (I have 4 of those units in operation). For the smaller units (3kW and below), if you put the fan on an always-on mode, idle consumption increases significantly. |
Re: Solar Energy, A Complement To FTA by Saipro(m): 8:57am On Nov 12, 2017 |
earthrealm: All points true once again. The charging-with-a-generator-flicker-when-on-high-amps-charging hold true when using a backend stabiliser/AVR to "smoothen things" before running power to inverter |
Re: Solar Energy, A Complement To FTA by earthrealm(m): 1:20pm On Nov 12, 2017 |
Saipro:THE FAN RUNS TRUOUT WHEN CHARGING IN MINE...BUT only comes on if the temp hits 65deg in inverter mode.. i think this is normal naau 1 Like |
Re: Solar Energy, A Complement To FTA by zeestone99(m): 2:13pm On Nov 12, 2017 |
earthrealm:yes it is normal, enjoy ur inverter, I'm a big fan of the mustpower design, their high load carrying capability gives me joy, as for the charging issues ,I tink its common with pple using the powerpulse desulphator just as my oga at the top wrote up there. ![]() |
Re: Solar Energy, A Complement To FTA by foonshur(m): 4:31pm On Nov 12, 2017 |
please @ all.... are there battery monitors that can cut-off supply to load/charger at a pre-set voltage. and can anyone recommend same? |
Re: Solar Energy, A Complement To FTA by oneshowguy: 5:20pm On Nov 12, 2017 |
Almaden Shade Solution to reduce the outdoor temperature from over 40℃ to below 35℃. Make use of the sunpower to produce electricity and avoides heating up. Learn more info ,pls contact Nigeria sales manager Michael:whatsapp +2348123329521 or send email to michael@back2back.ae 【24】hour online ![]()
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Re: Solar Energy, A Complement To FTA by dapsyra(m): 8:43pm On Nov 12, 2017 |
foonshur: https://www.aliexpress.com/item/DC-120v-200A-LCD-Combo-Meter-Wireless-Voltage-current-KWh-Watt-Meter-12v-24v-48v-Battery/32702737018.html |
Re: Solar Energy, A Complement To FTA by foonshur(m): 9:20pm On Nov 12, 2017 |
dapsyra:thanks a lot... although i have seen that before in my search before coming here. i want something readily available here in nigeria |
Re: Solar Energy, A Complement To FTA by mank1234(m): 9:28pm On Nov 12, 2017 |
foonshur: I've got the one pictured above in Nigeria. My asking price is N100,000 ![]() |
Re: Solar Energy, A Complement To FTA by foonshur(m): 10:19pm On Nov 12, 2017 |
mank1234:lol.... thank you very much... i think its better you keep it 1 Like |
Re: Solar Energy, A Complement To FTA by SolnergyPower: 1:32pm On Nov 13, 2017 |
Re: Solar Energy, A Complement To FTA by pranil(m): 2:17pm On Nov 13, 2017 |
foonshur: Konga - https:///lcd-combo-meter-dc-6-5-100v-100a-kwh-12v-24v-48v-battery-power-monitoring-100a-shunt-3237514 No contact but the display flashes or ask Kikie1 /JUO for Fangupson Clone if you want something more accurate with contact but pricy or even better the original BMV 702 ( appox 60K) If you arrange pickup from Abuja I have a cheap Chinese voltage card I used 2 years back to start and stop gen which is lying idle. I can give for free it is 12 V though so You connect across one battery only https://www.aliexpress.com/item/Voltage-control-relay-timer-delay-switch-overvoltage-under-voltage-protection-Free-shipping/32237248369.html? |
Re: Solar Energy, A Complement To FTA by NiyiOmoIyunade(m): 6:44pm On Nov 13, 2017 |
I understood that the OP wanted some sort of LVD (Low Voltage Disconnect) mechanism rather than just a battery monitor - for the Victron and/or Fangpusun BMV 702 - please how do you make it disconnect the load at a preset voltage? When I look at the wiring diagrams, I see the inverter negative cable hardwired across the shunt - since the shunt is essentially a metal conductor with known resistance, I can't see how any contactors or relay would interrupt the hardwired connection except you change the wiring setup or introduce extra equipment. All the LVD settings I see also indicate activating some sort of relay or contactor to disconnect the load but such a device is not bundled out of the box with the Victron or Fangpusun clone monitors. foonshur: pranil: |
Re: Solar Energy, A Complement To FTA by JohnKester: 8:17pm On Nov 13, 2017 |
Saipro: I am having similar experience with 7.5KVA Prag. It was running normally and the both the DC and AC fans were running intermittently as needed according to the specified temperature. However, for a while now the fans have been running simultaneously at the highest speeds. At such times, the consumption would increase dramatically up to 3 or 4KW when actual load is less than 1KW, without there being any additional loads. The load can only be eliminated when the inverter is switched off and back on. Once the fans start running, the charging from the PV also drops, I guess because of the gigantic self-consumption of the inverter! I have a 48V Desulfator (Battery Life Saver) connected to the battery bank. However, my inverter does not charge my battery bank at all, as the charging function is actually turned off since I am completely off grid and does not even charge with generator, but only PV arrays. Could the Desulfator be the problem, because come to think of it, I noticed this mode of operation only after installing the desulfator. Anyone with ideas what can be wrong and the possible solution would be appreciated. Cheers |
Re: Solar Energy, A Complement To FTA by NiyiOmoIyunade(m): 9:25pm On Nov 13, 2017 |
I have been using the BLS 12/24v desulfator since 2011 - the advertised method of operation is some sort of radio frequency signal sent into the batteries to break up sulfur crystals - I doubt if it is the cause of the issues with your inverter - the kind of desulfator myself and Saipro were talking about were the electronic pulsers/desulfators which send out very brief high voltage jolts into the battery to break up the sulfur crystals. The issue with your inverter seems more like something on the load side or an issue with the inverter board or some sensor on the board. Have you considered that you might actually have an intermittent shorted wire or similar issue in your house making the inverter sense high load sometimes? One easy way to isolate this issue is to install a 10amp AC breaker e.g ABB or other good brand on the AC live/positive side of the inverter output - I am assuming here that your actual loads never exceed 2.4kw or 10amps at 240volts AC - if that breaker ever trips where your real load based on equipment you are running is under 2.4kw and allowing for surge current, then you definitely have a shorted wire issue or there is some load coming on somewhere in the house that you are not aware of e.g iron or microwave or heater inadvertently plugged to one of the power sockets the inverter is powering. In any case, with the breaker attached, you have effectively set a load limit on your inverter - a 3 to 4kw load should trip a 10amps breaker, a bridged wire/short circuit scenario will definitely trip the breaker - with this you can easily eliminate/confirm the inverter as the root cause of the issue. JohnKester: 3 Likes |
Re: Solar Energy, A Complement To FTA by abunafiu(m): 10:09pm On Nov 13, 2017 |
NiyiOmoIyunade: Seconded. |
Re: Solar Energy, A Complement To FTA by foonshur(m): 10:11pm On Nov 13, 2017 |
NiyiOmoIyunade: |
Re: Solar Energy, A Complement To FTA by pranil(m): 12:26am On Nov 14, 2017 |
NiyiOmoIyunade: A more simplified mechanism is to cut of Load using a normal Power contactor. I found the Ac contactors have a longer life than DC contactors and much lower price. Even two stage cut off can be implemented - Cut off noncritical load and start a timer if the signal persists cut off stage 2 ( critical loads)- I had done it long time back for my Sukam wher the first stage cut all the power hungry circuits and started the generator and the second stage came only after 3 hours ( If the gen did dont start ) If the inverter has a remote on-off switch that can be used also Alternatively It may be esier to just replace the inverter with a better model with built-in LVD disconnect setpoint |
Re: Solar Energy, A Complement To FTA by Ativ: 7:22am On Nov 14, 2017 |
If one uses the LVD to simply disconnect loads, the inverter continues running but self-consumption of the inverter may continuously discharge the battery below safe levels. If one uses a device such as this, https://www.victronenergy.com/battery_protect/battery-protect , the battery connection to the inverter is opened and the inverter stops work. However, I don't know how safe it is to disconnect the battery while the inverter is working. Like Pranil stated, it is probably easier to replace with an inverter with an inbuilt adjustable LVD. |
Re: Solar Energy, A Complement To FTA by zeestone99(m): 8:37am On Nov 14, 2017 |
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Re: Solar Energy, A Complement To FTA by JohnKester: 11:34am On Nov 14, 2017 |
NiyiOmoIyunade: Many thanks. I will carry out the investigation and if necessary install the breaker. Once again, many thanks. Cheers |
Re: Solar Energy, A Complement To FTA by mcTrinity(m): 1:00pm On Nov 14, 2017 |
zeestone99: you have Epsolar 80A? |
Re: Solar Energy, A Complement To FTA by mcTrinity(m): 1:01pm On Nov 14, 2017 |
zeestone99: how much is Epsolar 80A? |
Re: Solar Energy, A Complement To FTA by earthrealm(m): 2:03pm On Nov 14, 2017 |
Saipro: so you mean the 3kw models have a fan always on/off switch?......wudnt that be dangerous, i also hv a powerpulse desulphator hooked across my bank..guess i would try and disconnect it some day when i hv the gen charging it..lemme see if there wud be a difference in the charging amps flickering. |
Re: Solar Energy, A Complement To FTA by zeestone99(m): 3:56pm On Nov 14, 2017 |
mcTrinity: No sir, only 60amps available |
Re: Solar Energy, A Complement To FTA by NiyiOmoIyunade(m): 7:33pm On Nov 14, 2017 |
Two separate issues bros. The powerpulse desulfator appears to ruin the MustPower inverter charging circuitry - if yours is still charging then clearly that has not happened for you - for me I lost charging functionality on my two mustpowers with a powerpulse connected across the battery bank but never experienced same across more than 10 client sites with thesame inverter deployed but no desulfator - I eliminated voltage fluctuations as the cause because I use a servo stab before power gets to the inverter. The issue with unstable charging/amps flickering is caused by Generator capacity and settings and most commonly observed when attempting to charge with a petrol gen rated below 10kva - if say a 48v Mustpower inverter is set to charge at 40amps, your average petrol Gen would not be able to sustain the inverter power draw and the inverter would cut the charging amps so you would be seeing the inverter's display flickering from low to high charging amps and back to low again - if you were using say PHCN or a 20kva Diesel Gen (sufficient capacity to carry large loads) you would be able to hit and sustain the max charging amps without any issues. If you are stuck with a petrol gen then you adjust the inverter charging amps downwards - I have found approximately 20amps charging current for a 48v nominal inverter to be the sweet spot that the average 5kva petrol gen can carry without hiccups - this is approximately 1000watts going into the battery bank so you can calibrate the amps appropriately for 24v and 12v Mustpower inverters. For the fan always on or off setting, I suspect Saipro has made good use of the Install CD bundled with his Mustpower and has found a way to make the inverter talk to his PC and thereby effect custom settings - I am waiting for him to give the house the low down if this be the case. earthrealm: |
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