Dear people

I am preparing project for my master degree, and my subject is off-grid solar powered electric vehicle charger. I need your help to check my calculations. I am bulding 9kWh solar system which will aproximetly produce 54.23kW daily. This calculation is done with average daily sun hours 6.3h with Victron solar panel mono 360W (working with 85% of their max). I need to install 28 panells 7 in series and 4 in parallel directions. Each panell is producing 1.9kW daily. 28 panell produce 8.56 KW per hour. Can I put my system to work on 48V, if solar pannel max. power V is 38.4V ? and my batteries are working on 25.6V ? Second question is choosing right charge controller. SmartSolar MPPT charge controller 250/100 can handle 100A and 250V. If I connect my 28 panells in way that I described (7 in series and 4 in parallel) how many charge controllers I need to handle all this power from solar panells ?(With my calculations that system require 2 * 250/100 MPPT charge controllers). And my DC load is going for Level 2 EV charging with 7.7kWh and rest DC current for Lithium Iron Phosphate batteries charging through quattro hybrid inverter/charger. Thank you very much.

Kind regards

I would like to know if there is any advantage when installing 3 panels in parallel and parallel them at the MPPT versus parallel them at the panels and bring down only 2 wires instead of 6. I'm not looking for cost advantage just for technical advantage/dis-advantage. Both setups of course done with the appropriate cable size.

I have a 100/20 MTTP with two Victron 200w 24v panels connected in series.

Would a circuit breaker like below be suitable to go between the panels and MTTP, as I notice the breaker is only rated for 65v (and the MTTP can take 100 max)?

https://www.amazon.com/gp/product/B000J0NLOS (Blue Sea Systems A-Series 20A toggle switch)

Hi,

Following a setup, I am building for a campervan I have a question regarding the selection of the input protection for the dc connection coming from the solar panels. [1]

What is a good choice for input protection, fuse and fuse box or circuit breaker? In either case, I would also like to have the options to be able to easily disconnect the solar panel for serviceability and safety.

Thank you.

[1] https://community.victronenergy.com/questions/3143/complete-system-architecture-for-campervan-640w-so.html

Hi All,

My apologies for the basic level of these questions!

I have a project in mind and I really need help because I don't want to make mistakes.

The project is to using solar panels to power water pumps to provide water (from a stream) to my crops.

So, I planned to buy:

- 6 solar panels of 300-350w each

- 6 water pumps of 240w (CC 24v / 10a or 12v / 20a) each

My wishes :

- Ideally, each panel feeds and controls its own water pump.

- No need for storage / battery

- Remote control management

- MPPT system to optimize performance

- But most importantly: I want to have a regenerative system in case the water pumps are not needed or when the solar panel delivers more power than necessary.

What are the equipment needed for this installation?

Thank you in advance for any help!

Matth

Seit drei Tagen lädt unser MPPT 100/50 nicht mehr.

Es leuchten alle 3 LEDs.

Welcher fehler Fehler ist das?

Gruß

Thomas

I would like to use a Cyrix-ct 12/24V 120A with a second battery that's also charged by a solar panel. The Cyrix is bidirectional, so a fully charged battery on a sunny day will also charge the first (starting) battery. Will both batteries be used if I start the engine in that situation? Will this effectively be a start assist? Obviously, I would want to do that with my AGM battery.

I have a 200w solar panel connected to my pwm light 12v 20a and it was working fine. The light was flashing indicating power coming from the solar panel and into the battery but now the solar input light is showing nothing even though I know there is 19v coming from the solar panel. At one point the battery did run flat and I thought maybe it turned itself off so I disconnected it and reconnected the cables and still nothing. When change the setting I get an 'ff' flash after the setting has been selected. Not sure what this means as it is not in my one page instruction sheet I got with the controller.

I have two sets of solarpanels. One with 360 Watts 12volt. The second 500 Watts 18 volt. I don’t want to mix them with different kind of serial connections. Is there a regulator with two inputs?

Hello All,

I am confirming my Solar/Alternator charging setup/sytem before I install this weekend.

I have a stock E-450 Box truck with a 130amp alternator and typical starting battery as my platform.

I am in need of the following from my system.

• Solar to primarily keep my starting battery charged over long periods of time.
• Solar to charge auxilliary batteries during the day after primary battery has sufficient voltage

Auxilliary Batteries have the following function requirements.

• Power interior box lighting.
• Power exterior box lighting.
• Power for inverter that will handle various electronics.
• Must be recharged during the day after starting battery is sufficiently charged.

My proposed setup is as follows

To connect both the input from the 200 Watt Solar Panels and the 130amp Alternator to the input on a 200-2 Argofet Battery Isolator to primarily charge the Output 1 Starting Battery, and to isolate that battery from the auxiliary battery bank (output 2) until it has achieved the desired voltage. The battery bank will be connected to a BP100 to limit its voltage drop so as to keep the auxiliary batteries from outputting voltage to an unrecoverable state. The BP 100 would be wired to an auxiliary fuse block from the auxiliary battery bank to output to the various lighting, inverters and others accessories.

This design would hopefully charge the batteries with both DC sources (even simultaneously with car running and panels charging) charging the batterie/s.

If I am totally incorrect about this basic design, please let me know where I have goofed!

I have searched for this setup but could find no real information!

Thank you in advance!

Martin

I have a camper with the above controller. It’s unclear to me what the “push” on off button is for? The solar and battery leds are green. Do I set the push to on (red) or off (no LED). What setting should this be for long over wintering to keep 2x leisure batteries charged?

I will be adding my solar panels this weekend to the boat and want to check where I should have fuses.

At the moment the wiring from the 4x 150W panels will be 2x parallel then the 2x parallel in to series before going to the Victron MPPT 150/60 via MC4 connections. Should I have a fuse on the +ve input to the MPPT? There is then a 32A DC DIN Mount Breaker 125V MCB C curve on the +ve going to the batteries.

Secondly i’ll be putting an ET-112 from my onboard generator to give me power info to my Venus GX (no multiplus or Quattro onboard) I see there is a fuse to go on the neutral side of the ET-112 but it doesn’t say how much it should be, the generator is a Paguro 4SY, that puts out 3.5KW @230V.

Hi everybody

I'm in the process of putting together my first solar system. I have a victron quattro 48 10000 along with bluesolar mppt 150/85. I also have the bmv-700 and the colour control.

I have a bank of 8 12 volt 180ah AGM batteries wired as two parallel banks of 4 in series, giving a resultant 48 volt 360ah. I also have a generator set on board which currently provides mains power when the batteries become discharged.

I have purchased 9x panasonic hit 245w solar panels. These operate at a maximum of 44.3 volts. I can either use eight panels wired as series pairs. Or I can run the full 9 panels with 3 paralleled banks of 3 series wired panels.

My resultant voltages would be 132.9v with the 9 panels or 88.6v with 8. I have read in the manual for the blue solar mppt that the PV voltage must not exceed 150 volts under any circumstances and that is in the coldest of conditions. Further to this in the cable selection chart it is said that maximum efficiency is it twice the battery bank voltage.

I am therefore trying to weigh up the advantages and disadvantages of running a 9 panel system or an 8 panel system as with 9 panels I'm approaching the maximum voltage but gain an extra 245w of power.

I would really appreciate the opinion of somebody more experienced than myself in setting up such a system.

Kind regards, Ivor

Heb een MPPT 100/20 rechtstreeks op de accubank gemonteerd. Daarop zijn 2 wegneembare zonnepanelen van 108W aangesloten. Ben onder de indruk van de werking en de app op mijn iPhone.

Mijn vraag:

Het op het schakelpaneel ingebouwde Magnetronic DCC 4000 Battery Control System registreert niet het laden via de zonnepanelen.

Hoe kan ik de aansluiting maken zodat dit wel gebeurt?

Er is een shunt aanwezig; kan dat helpen?

Hello -

I'm using a MPPT 75/10 with a 100 W Panel and a 45AH Exide Solar Battery. Short Circuit Current of the Panel is now about 4 Amperes on about 20 Volt.

The Controller never loads the Battery with more than 1.8A - max load current is set to 15 A.

Which means, a Load consuming 3.5 Amperes always uses the Battery, even if the Solar Panel is producing more Power.

I'm a newbie - so there's probably something to configure I don't know?

The Load is attached to the controller, not to the battery.

Thanks for any advice

Urs Hofer

Dear, I need your help, in October of 2018 victron energy solar energy equipment was installed in Olmue, Chile. Through the company Phineal (installer technician named Hernan Osorio). as of July 2019, the system still does not work. After months of conflict with the company, they can not configure equipment. today the batteries have more than 60% charge and however, the house does not get electricity, being necessary to connect to the external network. It is an on grid system and the electricity bills are excessively high, the responsible technician has not been able to solve this problem. please I need help to operate the installed solar system since the investment is very expensive. Stay tuned to your comments. regards

Heb een MPPT 100/20 volgens de handleiding rechtstreeks op de accubank gemonteerd. Daarop zijn 2 wegneembare zonnepanelen van 108W per stuk (paralel) aangesloten. Als ik niet aan boord ben neem ik de zonnepanelen weg.

Er wordt dan geen stroom geladen, maar de MPPT neemt wel stroom op (al is het niet veel).

Kun je de MPPT ook op het boordnet aansluiten, zodat hij wordt ontkoppeld als de hoofdstroom-schakelaar wordt uitgezet?

Zodat de MPPT geen stroom meer uit de accu's trekt.

Hoe kunnen we dat het beste aansluiten?

When I sell Victron panels people are starting to ask what is Mono crystalline solar panels cell conversion efficiency.

I installed a Victron 200w Bluesolar panel and a Smartsolar MPPT 100/20 in my Campervan, charging one Victron AGM 110Ah/12V battery (I'm not a heavy consumer on power).

I used the 'Gel victron deep discharge (2)' presetting on the MPPT for this battery. This looked fine to me for my Victron AGM battery specifications.

Until now I was completely dependent on two Victron wallchargers, one 15A used for the AGM battery and a small 4A charger I installed nearby the lead-acid battery of the car.

But now that I am no longer dependent on fixed power and love to stay for weeks at the same location without moving or using the engine, I have to find a way to keep the car battery also fully charged. And this is especially important for the following winter.

Unfortunately, the roof of the campervan is not very large, and together with the 200w panel, roof domes, etc. I see no way to install an extra small solar panel on the roof to topup my car battery.

Another option would be to use my Victron Phoenix inverter and connect the small 4A charger to this inverter outlet to topup the car battery, or is this a stupid idea and not possible

I would appreciate very much your suggestions.

I’m trying to spec a system using all Victron kit and looking at the 100/30 MPPT charge controller. Does that controller accept 24 volts from solar panels and charge 12 volt batteries?

thanks

BMV-712 and 75/15 smart solar controllers setup - First we installed two controllers, each hooked up to its own single solar panel to charge three 8D 240 amp hour batteries wired in parallel. Only one solar panel and controller showed amps on iphone app – and batteries did charge. In an attempt to get the other controller to connect correctly to batteries and contribute to the charge, we then added a BMV-712 battery monitor to the setup.

We networked the lot into one network – or so we thought. The non-charging controller/panel set still not showing watts or charging. Also that controller does not recognize the battery monitor – on the app it says add battery monitor to the network (although that controller does see the network). The other controller/panel continues to work and it does show up on network with battery monitor.

We were wondering if each controller needs to be a network of its own and then hook both onto battery monitor making it a single network. Or should the controllers be connected one at a time to the battery monitor.

Can someone please help us determine what is wrong with this setup? WE have no idea how to proceed from here.

I have a 12V Optima Yellowtop AGM battery in my 4x4 as a secondary battery which is connected to a 75W solar panel via a MPPT 75/15 BlueSolar charge controller. When my car is parked inside I want to connect the battery to my IP65 Blue Smart Charger. Do I have to disconnect the solar panels or can I leave them connected?

Hi - a boat electician just installed 4 x 100 watts solar panels on my boat, and connected them to the MPPT 100/50, but I've never received more than maximum 7 amps. When checking the voltage going in to the 100/50, i have had up to 50 Volts, so the panels are working fine. I have seven 100amp/h batteries installed + the starting battery, and the battery for the windlass. I bought the 100/50 in Grenada, but are now in Guadalope - if there's something wrong with the 100/50, will it be possible to get a new one due to guarantee by another store than the one I bought it in? Thanks in advance

I receive a mere 4W in bulk mode. Angle is not perfect so I was expecting at least some 40W. Souldn't the two diodes in each panel give way to the one panel fully in the sun?

Hello , I have the following older equipment in my ex crew van and would like to add 200w of solar and 240v hook up/charger with a Battery Management System , can anyone steer me to the correct Victron components (if possible) to achieve this?

Thanks Greg

Gel 12v-220AH Battery

Phoenix Inverter Compact 12volt 1600va

Phoenix Inverter Control

BMV -602S Battery Monitor

Cyrix-ct 12/24V-120A Battery Combiner

Battery Protect BP-200i

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I have 2 12v 160W solar panels wired in parallel. They are wired to my batteries and a MPPT 100/50 SmartSolar Charge controller. The system has been working fine for the last two weeks since I set it up. Yesterday, however, I came out to find that the victron connect app is showing no wattage or voltage coming into the charge controller from the panels. I have measured the current coming in from the solar panels and there is no problem there. They are showing the voltage i expect. The polarity is correct from the battery connection as well as the solar panels to the charge controller and has never been connected wrong. My charge controller is showing no error code on the led light. The bulk led is flashing once every 3 seconds.

Did my charge controller go bad?

I have a Quattro that is charging a large 24v lithium battery set up with the two signal BMS support assistant to control the BMS charging. I can't seem to get the quattro to prioritise the inverter to consume the battery power, in fact the only way I can stop it taking energy from the grid or solar inverter is to isolate the mains input. Do i have to have a Venus GX or Colour Control to set this up?

Any help would be appreciated.

I have a NOA solar mount for my boat. The NOA mount is a bit restrictive on panel options but it was advertised as supporting maximum 80W which i have bought for it. But the mounting holes are a bit wider apart than the NOA bracket is. Wold it be ok to drill the holes to fit on the panel frame? Im unable to change the NOA mount as its now installed on my boat and its the only way i can get a panel on my boat before i launch soon. thank you

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I am preparing to finally install my solar panels on the roof of my van conversion. My battery is 24 volt. I have nine (9) 12 volt, 100 watt renogy mono panels and was planning to have a 3s/3p configuration However, I was reading through the manual of my smartsolar 150/70 and noticed that it states that while 3 in series will work, the highest recommendation is for 4 in series.

Is the efficiency with 4 in series so much better that it would be worth going with an 8 panel (2s2p) config and ditching one of my panels, instead of my originally planned 3s3p?

In other words, would I stand to get more from an 8 panel system than a 9 panel system?