input current

Hi,

I'm looking to purchase a Multiplus II - GX, 5000, which I would plan to use with 2 banks of 2 Pylontech 3000C batteries. I would like to know about the supply RCD:

I see in the installation manual, it says that the MP2-GX should be installed with a 32A RCD. But, my specification for the 5000 is based on the switching capacity, so I can supply up-to 50A downstream during normal operation (when the grid is up). Shouldn't it be installed with a 50A RCD (and the manual just relates to the 3000 version)?

Thanks in advance,

Glyn

When I connect the shoreline the Victron Multi plus it does the usual change over from inverter to charging. however the charging light comes on and also the alarm LED flashes and I am getting very little if any current coming through.

A customer is using 2 x Multiplus-II 5kVA in parallel with a Cerbo GX and an EM24 (CT) energy meter. The system monitors three phases but is only installed on one.

The Cerbo GX is not displaying the correct AC Current on the Input and Output of the Multiplus, found under the Device Menu > Multiplus. Please see the attached screenshot. The Power measurement seems to be correct, as is the voltage and frequency. Which would suggest the AC current is being measured, but not displayed.

Parkin No AC Current MEasurement.PNG

The EM24 meter is being used for grid readings. However the Multiplus must still be measuring.

I was wondering under what circumstances would the Cerbo GX not display the AC current readings of the Multiplus, but still shows the power/voltage/frequency.

Failing this, I will ask them to check each inverter independently. Any thoughts appreciated, thanks.

I have a Multiplus II 48/5000/70-50 and a Cerbo GX amongst other stuff.

I have set the AC input current limit to 4 Amps.
And so if it is charging easily, it sticks to the 4 amps.

But when there is a load on the system, which is greater than 4 amps, it just almost takes 6 Amps (5.6 Amps). Viewing the Multiplus through the Cerbo GX shows an input current limit that cannot be set lower than 6 amps. The loads can be much greater than the 6 amps, and the battery can easily deliver all the power, so the system and its power assist function work fine. But why does it exceed the 4 amps?

I also tried disabling the "overruled by remote" in VEConfigure3 on the multiplus file. This should block the Cerbo GX from messing with it.

I didn't do any ESS configuration on it, which I will at some point in near future.
However, for now it is just a semi-offgrid system which needs to stick to the 4 amps if grid power is available. And if the grid power is available it works in power assisting mode.

The Victron model (https://www.victronenergy.com/live/energy-meters:et112) is a single phase 240v. Is there a single phase 110v equivalent available to feed AC current consumption to my Cerbo?

Thanks

Is there a way to remove these AC Input and AC Loads from the dashboard as I am not using them? I tried to remove them under Remote Console/System Setup/AC Input=Not Available. However, the setting always reverts back to "Unknown". Am I stuck with these two useless widgets in my case? Thanks in advance.

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First let me describe the system I am working on as it might be a bit unusual.

The system is installed in an Airstream trailer for powering a "trade-show" demo and HVAC system for public demos. Typically the loads draw ~4kW continuous, 8kW peak. The use case is to plug the trailer into either an EV charge point OR a 50A RV service (with an EVSE) overnight, tow the trailer to the site for the day and let it run all day, then tow it back to a grid connection overnight.

Additionally, we wanted the ability to "trickle-charge" off a 15A 120V outlet.

• 28kWh of 48V batteries (12x Renogy 50Ahr LiFePo4 "smart" batteries)
• 2x parallel Multi-Plus II 48/5000/70-50 230V
• 6kW of solar with 2x Victron MPPTs (not yet installed).
• Lynx distributor and Lynx CAN shunt with a Cerbo (not yet installed).
• AC output: 100A Victron autotransformer feeding split-phase to the panel
• AC input: manual transfer switch to select between a J1772 inlet (up to 50A at 240V) or a 2:1 transformer to "trickle charge"

The problem is that sometimes we want to use a 15A 120V outlet with the PowerAssist function. We would like to pull ~13A from the outlet (6.5A@240V, at the input to the Multi-Plus-IIs) and supplement the rest of the ~4kW load with power from the batteries.

The minimum current per Multi-Plus is 5.7A, or, on the other side of that transformer, 23A for both.

How can we make this work? If we disable PowerAssist, we can decrease the current limit further but it will not otherwise do what we want, correct?

Thanks!

Hello to everyone,

I'm writing because recently I encountered an issue with my solar system (correctly working untill some months ago) and I hope that someone here can solve it.

My setup is as follow:

- Semi flexible MONOCRYSTALLINE solar panel 105W with this characteristics

V Pmax (V) 20,16
I Pmax (A) 5,26
Pmax (Watt) 105,99
Vca (V) 23.04
Icc (I) 5,63
Eff. cell % 15,42

- Victron energy MPPT 75/15

- Green Power AGM Battery 12V 100Ah

I live in north Italy and the results of a test made today at 2PM are these:

Mutimeter voltage directly out of the panel 19.6V

Current directly out of the panel 2.6A

Multimeter voltage at the end of the cables 19.5V

Current directly at the end of the cables circa 2.6A

The I connected the cables to the MPPT 75/15 (with battery not fully charged 12.8V connected and no loads) solar voltage displayed by MPPT is circa 14.6V, the same result with multimeter directly on the MPPT terminals. Current showed is 0.3A.

So the MPPT doesn't charge the battery..

After that I disconnected the battery from the MPPT and the voltage displayed is 19.2V and 0A.

Fuse is ok.

What could be the problem? Damaged solar panel or MPPT??

Thank you for your answer.

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I have a customer with:
- MP-II 3000 48V 30/50
- 4 x Pylontech US2000B
- MPPT 150/60
No GX device, no data connection, other than local VE-bus and Bluetooth
It has access to a mains supply available at certain times of the day (L1).
It all worked well, for about 18 months, then it ceased selecting the mains supply via the Virtual Switch. Customer believes it was after one of the firmware updates.
Please see the below screenshots and advise?

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- Dedicated Ignore AC input (therefore no Assistants)
- Power Assist=on; current boost factor 2

Please advise how I should load a firmware version from (say) April 2019?

Thanks Chris

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Hi I have a cerbo gx and 4 et112. Meters connected to it and I set all them up having one set as grid meter one set as generator meter and 2 for 2 separate inverter outputs. However even after setting one of the meters as a grid meter it shows no ac input but only shows it as ac loads. Is there something wrong with my cerbo gx or will the et112 not show as ac input because I would have to have a victron inverter?

24/5000 Quattro

Cerbo GX

Everything is updated with the latest firmware and I have tried a second new quattro to just test if the issue is in the unit itself.
When I set the input limit. It works fine, going over to powerassist when the amps increase. I have pulled between 600w-7500w of load with no issues using an array of heaters, lights and general loads like fridges. The inverter works fine with high loads and adding shore power and for the most part, works perfectly.

The boat had 3 different A/C units onboard. Each is about 1000-1500w

But, if I start 1 A/C module, there is a 50/50 chance that it keeps to the input current limit.

When I start the second A/C unit. No chance. It pulls a crap ton from shore power often blowing the fuse.

Example:

Input Limit set to 5 amps ~ 1100w and I'm using 1500w to run loads. Powerassist is happening on the diffence.

Start the 2 A/C units, Total load goes to 3000w, input power goes to 2700w completely ignoring the input limit until Iv turned most things off on the boat giving it a little time at low load.

Any ideas?

The power system (components listed here; all devices have the latest firmware as of this posting) I installed in my fifth wheel is entering power assist mode despite the AC input being less than the input current limit. For background, one goal of this system was to be able to run a pair (15 and 13.5 kBTU/hr) of air conditioners on 30A/120VAC single phase service, with the inverters/batteries supplementing the grid power for intermittent loads like a Keurig, microwave, etc. The trailer came with one air conditioner on L1 and the other on L2. Of course, when only single phase input is provided, the second inverter inverts from 12 VDC but its continuous output must of course be limited by the first inverter's charging capacity of 120A. After conversion losses this is inadequate to power the second AC without pulling from the batteries (side note for any Victron employees lurking: *please* implement a way for the second inverter in a split-phase system to accept AC input that's in-phase with the first inverter! This is obviously something that can be done in software and its absence is driving customers with RV applications out of their minds). To get around this problem I installed a 20A switch that allows me to switch the second air conditioner from L1 to L2. I thought that was clever.

But not really; the stubbornness of the Multiplus defeats my ingenuity. See pics below.

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As you can see, it is drawing well below the input current limit from the grid, yet "assisting" and drawing down my batteries. The total draw is around 28-29A although it can't be seen in the pictures (but you can infer it from the "AC Loads").

Please help me figure out how to force the inverter to draw up to the input current limit before it goes into assist mode; I really can't stomach the thought that I paid ~$15k and put in dozens of hours of work to actually lose capability.

Edit: The system is plugged into a 30A 120/240VAC split-phase connection. Inside the rig I have a 50A breaker upstream of the Multis, and I cut the little metal link joining the two poles of the breaker so that I can switch L1 and L2 on/off separately. In the example above, L2 is cut off to simulate how the Multis behave when only given a 30A/120VAC input (the first inverter switches to grid input while the second simply inverts from the batteries, as I ranted about in bold above). It is connected through several long extension cords, hence the voltage drop. Nevertheless, there is sufficient input amperage available to power these loads from grid input alone (and it certainly should be pulling more than 23A when it has a 30A input current limit).

Here's a VRM link: https://vrm.victronenergy.com/installation/66058/share/6019a575

And here's a link to the RVMS file with the current inverter configuration: https://drive.google.com/file/d/1JUNAxmPHIBWKNB6Saglhysvo8FdTxRsx/view?usp=sharing

Thanks!

I have a Quattro 24/5000. When I add an AC load, the Quattro drops the AC 1 In current (connected to a 4800 W generator). The inverter/batteries make up the difference. See attached screen shot.

Settings: 120V, 60hz, Power Assist = on; Boost Factor = 2.0, max; AC 1 input current limit = 15 amps. See screen shots. The only difference in conditions in these two screen shots is the AC load applied.

This is strange behavor and I am at a loss. Any ideas?

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My SmartShunt is installed on an RV and is monitoring two Battle Born GC2, LIFEPO4 batteries with solar controlled by a BlueSolar Charge Controller MPPT 150/35. The Output list shown on the main screen has Voltage, Current, etc. The Input only lists the "Starter Battery." Is this normal, or should the display show the solar, and, when appropriate, input from shore power?

In order to maximise the output from a Victron Blue Smart IP65 24V 13 Amp Battery Charger, what AC input power is required @240v in watts ? The info is required so I can assess the size of generator required to run the charger remotely.

Why is the input current limit changing the PV Charger (DC Current) during feed in, if I am using a number less than 7?

Setup:

Multiplus II 48/3000

3 x Pylontech US2000

SmartSolar 150/35 with 2.1kw PV

Venus GX

EM24

AC coupled PV with 10kw

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I have a Multiplus 24/5000 with a CCGX. Both the Multiplus and CCGX have an input current limit at 10 A (around 2300W). When the AC input is active the current goes way above the 10 A.

Any ideas?

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Dear forum,

I am planning on connected a 3phase network but for ease i question about 1 phase.

What are the max load specifications (in kW) for Ac In and Ac Out 1 and 2?

Can my House load be more than 5kW (battery plus public) or is my total house load restricted to 5kW even if the public could be more than 5kW.

Or is it that my public connection to the multiplus has no restriction at all (if 100% public 0% battery) and therefore my houseload can be more than 5kW.

(Or question with 3 phase :

3x 5kW Multiplus = 15kW Peak Load

What IF my Output happens to need (shortterm or even longterm) 17 kW

Will I receive the missing 2kW from public? Are the Ac In and Ac Out even layed out for more than 15 peak kW?)

What is the right load setting or what even is possible.

I cant seek to find any 5kW exceeding limits in any datasheet

Hi all,

I am wondering if anyone knows what happens when I:

• disable PowerAssist (it has to be disabled so the Input Current Limit can be lower than 3.9A for a Multi)
• set the Input current limit of a MultiPlus to say 2A
• switch on a 10A load on the AC-out

I'm looking into ways to dynamically adjust the power take from an external power source between "as low as possible (0A would be great, but 1A will do too)" to 20A.

Would the MultiPlus supply 8A from the batteries and 2A from it AC-in in my example above? Or would it trip with an overload?

Jan

I am metering 4.5 amps on the incoming PV wires. 40.21 volts on the input side of the PV lugs. This is a Smartsolar 100/30.

With the bluetooth monitor it sees the voltage but 0.0 amps.

I've simplified the system so that I can diagnose it. I have

one 12v Renogy 100ah lithium battery

Two 100watt renogy mono panels wired in series for 24v nominal

Smartsolar 100/30 charge controller.

When I turn it on or make changes it will move into bulk for 2 or 3 flashes and then to absorption.

Any help?

What is the minimum input current limit for Quattro?

Setting it on VEconfigure allows me to set it as low as I want. However, the input current limit won't go below 10.5 on the Colour Control.

It needs to be set lower as the customer only has a small generator. How do I do this?

Hi,

I have a 48/5000 Multiplus 2 with a BT Smart dongle.

I have set the Max Input Current Limit to 10a via the BT dongle but when I plug the gen set in to top up the batteries it charges at Maximum current which exceeds the generators 3,700w running capacity.

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My Quattro 10000VA trips when I power on 48V battery through a 10A DC breaker. What could be the issue? How many Amperes should this inverter draw at no load?

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Hi, I have a BMV702 and BT dongle that broadcast Current info to two solar controllers. One is a Smartsolar and the current signal is taken into account in the charging algorithm, no problem here. The second is a BlueSolar with a brand new BT dongle, it seems I can't get the Current signal from BMV. (see pic). Is that normal, is there anything to do to fix this? Thanks

Hi !

I'm currently building my energy storage (on grid) consisting of a Multi Plus II, generic battery and PV inverter from SolarEdge (SE7K) with the SE modus energy meter (SE-WND-3Y400-MB-K2).

At this stage ONLY the Venus GX is connected, the Multiplus II is still in its box ;-)

As written in the FAQ the Venus-GX was able to find the SE7K.

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Now I'm able to see the production of the SE7K.

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My problem is that concerning the total AC-consumption it equals the SE7K production. This is not true. During the night it shows 0W for the AC loads but the SolarEdge portal shows me that that there is consumption from the grid.

Day (with PV production)

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Night (no PV production)

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Does this mean I need to buy an additional energy meter (e.g. EM24) if i want to monitor the total AC power consumption that I'll be later able to feed only so much energy from the battery that my purchased energy will be zero?

As far as I can see from the SE portal the power taken from the grid is also available from the SE Modbus energy meter.

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Help greatly apprechiated!

Dirk

I have done a re-install on a previous 12 volt setup in my Landcruiser. Prior to removing this setup the BMV-702 was functioning correctly.

Now after a re-install, the BMV-702 is working and connecting via the app to my phone but it is not reading any current draw when load is applied to the auxilary battery.

I have re-installed using the factory wiring diagram and checked it over, so it should be correctly wired.

If I turn the ignition on the app with begin reading current draw, but in large amounts.

I have reset factory settings, re-installed and updated the app with the latest firmware.

Can anyone please help.

Bonsoir,

Aux bornes de l'entrée batterie un voltmètre indique bien 12 volts produits par des batteries neuves. Aucunes LED ne s’allume ni le "digital multi control"

Merci de me faire participer à votre savoir.

Hi there. I have been running my 75/15 in my car for over 12months, I have a 250w 36v PV on the roof, and up until last week, it run perfectly, keeping my crank and AUX batteries fully charged. My monitoring system alerted me to the fact my battery (AUX) was almost flat, so I checked out the system and found the PV input was only reading 13v, it should be reading 36v or so. Further investigation just now, shows 36v at the panel, 36v at the cables into the 75/15 when they are unplugged, when they re connected however, it only reads the 13v which I assume to be battery voltage. I am 99.9% sure this PV input reading is always 36v-40v when its daylight, irrespective of that, my batteries went flat.

Anyone offer some advice on what could be wrong here? Should I factory reset my 75/15 or is there another option or something I am missing.

TIA

Hi all

I have a very odd issue which has happened maybe 2 or 3 times in the last 4 months, today was the last.

What it looks like is the grid falls away for 0.15-0.3 seconds, when I review the data I can see the current going to zero but not the voltage. See the image below.

I can only assume the system is acting as it should, and that either the dip is just too small/ too quick to be picked up by the Quattro's monitoring, or the voltage sensitivity is set too high. South Africa is known for many things, one of them being an unreliable network, so I wouldn't be surprised if it was a voltage dip.

So I guess first and foremost has anyone else experienced anything similar?

And secondly, is there any way to verify exactly why the system started inverting?/ to what extent did the voltage dip?

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Regards

Ewald

Two 100W panels in series. 30+ volts consistently all day, but never more than about 1/10th amp showing as being produced. Multi-meter touched to wires as they enter the controller (so I suppose in parallel with the controller) read between 3 and 4 amps.

When load hooked up to load terminals at 1A draw (a 2 bay 18650 battery charger set to 1A charge rate), I see the amp coming off the battery, not the panels. I never see any amperage coming in from the panels.

I suppose this might be naive of me, but I assumed that if I was drawing a load, that the panels would attempt to fill the need before the battery did? Battery is a 12V lithium ion pack, so don't be concerned about is reading 11.59V. It can go a lot lower than that before any harm done.

Might also be worth noting that I have the float voltage set at 11.5V and Absorption set at 12.4V. I know I don't really need to float a lithium battery, which is why I have it set so low. I have the load output settings at 12.25V for the "reconnect load, battery is charged enough" and 10.35V for the "disconnect load, battery is getting too low".

Nothing appears to be reversed for polarization, and this battery has sort or trickle charged itself each day (graphs show me 10-20Wh per day input) to maintain roughly 12V over time. I haven't really had a load on it before today, so no significant battery charging has been needed.

We also have been dealing with all the wildfire smoke for the last week or so. Today was the first blue sky day. So first day I expected to see some panel efficiency.

Screenshot below.

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Screenshot of my app.