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What type of RCD is suitable for Quattro in case of " Earth fault waveform" generating while operation or Earth Fault?

I think the Manufacture should know about the type of RCD should be used for that particular product.

nikulpatel asked
wkirby answered ·

3 Answers

Quattro 12/5000 does not charge anymore from generator

Until yesterday all was working fine. No error lights on the Quattro. Since today of we want to charge by generator, the Quattro stops charging. Quattro is first switched to charging mode from gender and then switched off again (we can hear the clicks). Generator is working fine, that is tested. All other functions working fine (solar comes in, Quattro is inverting). Both BMV and Venus work well and show all other functions. Does somebody have an idea what we can do?

lin asked

0 Answers

Generator problems

I'm setting up a Quattro 24/8000 and it refuses to accept AC from my Onan 10kw genset. It tries to switch over when the generator is running but when I watch it in VEconfig it reads "L1 not in phase"

I have tried the ususal settings, UPS dissabled, Dynamic current limiter enabled, the max min voltage and current settings are well within the output of the genset, so is the frequency. Extremelz frustrating, anz further advice?

carl asked
Christopher A. Lindner answered ·

4 Answers

GX Cerbo generator start / stop

Good day,

Installation: 3 x 8kVA Quattro inverters with GX Cerbo, color screen and 400aH battery, 8kW PV. I stay in South Africa and needless to say that the power stability and availability is extremely uncertain.

I have a 30kVA generator available, but at present need to be manually started. I now need the generator to be controlled from the Cerbo, but looking at the settings I have the following extract and question:

1. * Do not run genset when AC 1 is in use: This option is ideal for back-up systems where a Quattro has mains/grid electricity connected to its AC-in 1 terminal, and a Genset connected to its AC-in 2 terminal. With this option enabled, the Genset will only start after a mains failure. And where a mains failure has occurred, the Genset will automatically be stopped again as soon as mains power is restored.

2. Will the generator be started irrespective what the status of the battery is, or if PV is available?

3. What I need is to use the generator as last support for power after PV and battery reached a pre-set SOC % with Grid failure.

Response on my requirement and possibilities would be highly appreciate before I do all modifications to the generator and generator controller.

Best regards

henk-bolton asked
Paul B answered ·

1 Answer

Would a 12 v 15 amp charger be able to run from a 6amp rcd in a consumer unit

Would a 12 v 15 amp charger be able to run from a 6amp rcd in a consumer unit ?

chewi asked
chewi answered ·

2 Answers

Internal or External MEN Link - Off-grid residential - Australia

Hi Everybody,

The Victron inverters and inverter chargers come with the internal MEN link set "on" as standard. I'm just wondering how many of you would turn this off and create a hardwired MEN link in the switchboard when installing for an off-grid residence/anything that isn't a vehicle/boat?

If you prefer to use the built-in MEN link, why?

If you provide for an AC generator input plug, how do you deal with the fact that not all come with their own MEN link?

dbx120 asked
Guy Stewart (Victron Community Manager) answered ·

1 Answer

Adding a generator to a split-phase configuration Quattros system?

Hello community,

So I'm trying to implement a system of two single-phase Quattros that can give me one two-phase output. I'd also be adding a bank of batteries to this system. This bank of batteries should only be used when the grid goes out. If within 15 minutes the grid is still out, I'd like a generator to start working and feed the loads. Is there any way to configure this kind of timing of a generator? If so, how's the wiring? Can you please refer me to a connections diagram?

I'll also be using a Color Control.

Is there a way for the generator to stop working after the grid is available again?

Thank you for your respones, have a nice day

dzm9508 asked
Kevin Windrem answered ·

1 Answer

ESS system with Generator on AC input 2 and Quattro 5kva is not stable

Good day all .

I have a victron quattro 5kva setup with a mppt 250/100 and 10kwh of lithium batteries. Ac input 1 has mains electricity. Ac input 2 has generator input. Now with out the ess assistant geneator charges batteries and supplies loads through the inverter with no issues .

When i enable ess assistant the system functions with solar and grid energy as required. However should the user require generator to backup power or charge the battery the inverter will constantly flip on and off between charge and not charging . The relays will stay on for about 2 mins and off . Then on again then off again. To try all options we have disabled ups mode. And enabled weak ac input. This still doesn't make a difference. I can only assume that this has something to do with grid feed in which is set to grid type other with no feed in . Loss of mains on both ac input 1 and 2 is set to type b safe .

Would changing the type b to disabled on the ac input 2 correct this problem with no adverse effects on the 14kva generator input 2 ??

Or should i be looking for another solution .Thank you in advance for your help and assistance.

nismoboy34 asked
Daniël Boekel (Victron Energy Staff) commented ·

2 Answers

himoinsa generator Integration.

I have client that we doing a large of grid installation and we sourcing the generator at the moment. We going to get a himoinsa HRYW-25 T5 S5. has anyone doen integration with this exact model before ?

Martin Coetzee asked
klim8skeptic commented ·

0 Answers

easysolar 24/1600/40 earth leakage trip

Hello people,

I've been assigned a job to sort out a newish installation of an easysolar into a shipping container based recreational facility. A shack next to the river with enough power to keep the beer cold basically.

At first blush everything seems to be installed nicely by licensed trades, however I'm told there was one cable for a light circuit that had been shorted with a roofing screw, and that has now been fixed.

My real concern is that when connected to a (Honda EU20 inverter type) generator the easysolar appears to synchronise, but as soon as it changes to "charge" mode and loads the generator up to put some energy into the batteries, the output RCD trips.

It functions fine as a battery inverter running the loads in the downstream switchboard, but when there is "shore power" available from the floating neutral Honda, the contactor clicks in the easysolar and the RCD throws in the towel.

Others have built, commissioned and tried to diagnose this problem before me. There is no earth stake for the "portable" building and no MEN link to join the earth and neutral bars in the switchboard.

I'm curious to know if anyone has experienced this problem before and if I can't find a definite earth leakage problem, is the only option to disable the earth relay in the easysolar? Do you have any ideas @guy stewart?

Cheers for your help


earnestelectric asked
Matthias Lange - DE answered ·

1 Answer

How can I use the 2nd Cerbo Relay?

One relay controls the generator start function based on SOC as reported by a SmartShunt. Turns ON the main generator at 60% SOC, and OFF at 90%. So far so good.

Is there a way to use the 2nd relay output with similar logic to control the field current to the main engine alternator so it turns ON at 80% and OFF at 95%?

Alternatively, I imagine I could use a BMV-712 and use its relay logic as the control for the second charging source as a function of SOC?

billknny asked
shaneyake commented ·

3 Answers

Kohler 7.5 Quattro Cerbo GX With Load Sensing Gen Start

My genset is controlled "start/stop" by sensing the presence or absence of a load on the line. It also has a two wire start/stop. The two wire will not stop the genset if there's a load present. My question is, will the Quattro AC IN-1 contactor open and close as necessary for my genset when programmed with the gen start/stop features in the Quattro or Cerbo GX or do I need to add a external contactor?

Thank you

burnscraft asked
JohnC commented ·

3 Answers

Start/Stop Generator Control for Hyundai HY3500RVi


I have a Hyundai HY3500RVi generator which I would like to auto start/stop from a Cerbo GX, the manual for the generator doesn't give any clues and Hyundai UK tech support are not able to help.

Does anyone else use this generator and can control the start/stop via Victron system relays? Any ideas would be very welcome.


notmyrealname asked
notmyrealname answered ·

2 Answers

Combine 2 inputs quattro

i have one quattro 8Kva, with AC-in-1 connected to shore power, AC-in-2 connected to a generator.
By default they transfer switch, preferring AC-in-1.

But would it also be possible to have it combine the inputs and sync?

betz asked
wkirby answered ·

1 Answer

Generator Input Instability

Offgrid, Multiplus 48/5000, 225Ah fla batts, CCGX, 150/100 mppt. 2x generators, both with the same issue, see screenpic..


This shows the Multi charging/controlling to Absorb V. There's 2 sections, the first with a Yamaha 6kVA, the second with a Scorpion 2.2kVA. My problem is that the V is varying over ~2V and the Amps ~4A. Target V today is ~58.6V (Temp Comp, cold batts), but the Multi never actually registered Abs, it stayed in Bulk. The mppt, set 0.1V higher than than the Multi, actually found Abs from the V spikes and locked in, though only producing ~100W in foul cloud.

I can settle it down using 'Weak AC', but this comes with other issues. Recently was able to remove that when I found a hot ac cable joint and repaired it. Dynamic Current Limiter checked (I need that), and Input Limit varied to suit the gensets. The rest I can't seem to be able to post, but I'll try to add in a comment.

Can anyone point me at a possible reason or cure for this? I'm running out of ideas.. Cheers..

JohnC asked
JohnC answered ·

1 Answer

Basic support Multiplus with Generator and grid connection

Hi, i am new and have a question if my plan is realizable. My plan is to use a Multiplus with a connected generator and solar power to reduce my grid load.

Currently i only have a grid connection with 3 phases and N, i live in Germany.

And my final solution would be this:

Use always the generator source to reduce the load. If the generator does not deliver enough power also use power from the battery which will be loaded from the solar panel and a Victron MPPT solar controller. If these two sources do not have enough power, use grid power.

This is my expectation of the ESS System:

I would expect that ESS of victron with Phase-compensation is able to handle my load and will reduce the grid consumption of my house to zero, as long as the generator power (max input configured in Multi) and Multiplus inverter power is higher than the load of the house.

Is this correct?

If yes, i would expect these devices in my system:

EM24 grid meter


MPPT solar charger


Wiring setup:

Connect the generator to the input of the multi and of course the battery to it. The battery will also used from a Victron MPPT to power up the battery with solar power. Connect the output1 of the Multi to one phase of my House, thats it?

It sounds to easy to be true.

I know there are a lot questions and maybe the headline is also not really helpful, but maybe one of you will help me to get better knowledge of this. Or will post some info where i can get the information.

Thank you very much.

big-blue asked
big-blue answered ·

4 Answers

Power Assist Boost Factor and overloading MutiPlus

I have a 12/3000/120 MultiPlus and I'm trying to understand some Overload issues that I'm experiencing and wondering if the Boost Factor is potentially causing the issue.

Setup is as follows:
Input Limit: 30A
Power Assist: Enabled
Boost Factor: 2.0
UPS: Disabled
Input Power: 4500W Inverter Generator (3800W running)

I've noticed when a large load comes online that the MP will overload and disconnect. I also get an error from my EMS that the voltage has gone "out of spec" (sadly it doesn't tell me which way). What is interesting is that the load is under the 30A input limit and can easily be handled by the generator alone. I'm wondering if the MultiPlus is "preparing" to power assist approximately 7200W (Boost Factor * Input Limit) and causing the overload itself?

If I set the MP to "Charger Only" the Generator can handle these loads just fine. So it seems to be something specific to Power Assist causing the issue. I do plan on turning down the Input Current and running this same test to see if Power Assist successfully assists without disconnecting but I haven't ran this test yet.

Should I lower the Boost Factor down to 1 (or maybe even lower) to stay within the 3000W that the MP can provide? Is there anyway to configure this so that it is not reliant on the input limit? For instance if I'm connected to 15A power I would want a higher boost factor.

Thank you!

Jared Wellman asked
Mike Dorsett answered ·

2 Answers

Warm-Up and Cool Down with Automatic Generator Start (AGS)?

I have a Color GX and a couple of Quattros. AGS works well now with my generator, but I'd like to include a warm-up and cool-down period.

For example, once the generator is started, I'd like the Quattros to wait for 5 minutes before applying a load to the generator. When the generator is going to shut down, I'd like the load to be removed 5 minutes before the generator is shut down.

Is this possible with programming? I'd like to not have to use timer relays to accomplish this and instead do with programming. Someone in a previous post mentioned the use of assistants. Thanks!

chrispendl asked
chrispendl answered ·

5 Answers

Flicker and wild voltage and frequency variation of Quattro output when operating with generator


We are experiencing this same issue on multiple sites. Both with AC connected PV and sites with charge controllers.

Quattro 5kw off grid system. 50hz 230v

When the backup generator is operating, the output from the Quattro varies wildly and also it appears so does the load placed on the generator - to charge the batteries (from the VRM portal data)

This is backed up up by the display on the generator (Hyundai DHY6000) which shows frequency.

Frequency output from the quattro is so unstable it cases the Fronius PVinverter to cut out and also the machine machine on site to go into fault. Also voltage is all over the place, and al lthis causes lighting flicker too.

UPS function setting is off

I have tried lowering the shore power setting.

I have tried lowering the output voltage slightly on the Quattro. (output on the genny when unloaded is 230v)

Dynamic current limiter on or off makes no difference.

Accept wide frequency range is on.

I am assuming that the quattros inverter attempts to track the AC input frequency and doesnt do a great job of it.

If powerassist was disabled - would this prevent the inverter output from trying to track whats happening with the AC input ?

Any ideas?



Chris asked
JohnC commented ·

2 Answers

victron quattro 24/8000 Relay program

Hallo. I have a victron quattro 24/8000 with a victron cerbo gx connecete to the system. is it possible to program one of the relays to pull ON when switching to generator (AC1) and stay on? i can not find an option in VE. Config 3. That would be a good thing in the Marine world.

Kasper asked
Mike Dorsett answered ·

1 Answer

When battery is less then 100% and Multiplus is on generator with A/C on - battery will discharge
Here is my setup on my RV

Victron multiplus 3,000 watt 12v inverter/charger
300 amps hours of battleborn Lithium batteries
850 watts of solar panels.
50/100 smart solar controller.
Two 15,000 btu A/C units with a microair easy start on the livingroom unit.
Honda EU2200 generator
Current limiting set to 17.5 amps

Scenerio #1
Battery bank at 100% in float or absorbtion mode
Generator running
Multiplus set to on
Turn on Livingroom A/C unit

A/C runs fine and will have a little extra power to run a few lights, TV with a few amps going in the battery bank

Scenerio #2
Same as above but battery bank is just less then 100%
Inverter charger goes into bulk mode with 120 amps going in the battery bank.

A/C starts up and runs but multiplus is in assist mode and battery bank is draining fast.

Is there a setting that I can configure to not have this happen? Can I choose to give priority to the ac load and not the charger?

If I set it to inverter only there is no power comming in on the grid and the A/C is running only on battery.

I know that I could let the battery bank fully charge before I run the A/C but on a very hot day after a long drive and your RV is 102° F inside, you want to cool off as soon as possible.

Lou Cetrangelo

Lou Cetrangelo asked
svtti123 answered ·

3 Answers

Low current draw from genset

Hi, my genset is only putting 3.4kw into the system when it is capable of more than double that. What is limiting the power input?

grapegrower asked
Alexandra commented ·

1 Answer

inverter off

I have a "3 phase" system running off 3 inverters, they charge the batteries from a generator. When I try charge from the generator the device says OFF but I can see the SOC and voltage both of which are fine. I also checked the gen voltage which is also fine. When I switch to charge only the CCGX the switches to fault.

Anyone know what this could be?

matt23 asked
matt23 commented ·

1 Answer

Dual Fischer Panda connection


I have a Cerbo GX, the Ve.can starts with a terminator on the lynx, continues to the cerbo GX, and the second outlet is connected to the cable provided from Fischer Panda for one of the two generators.

the cable of Fischer panda, comes from a gateway from Fischer panda bus to Ve.Can.

my questions is how can I connect the second generator to Ve.Can?

sydasssy asked
sydasssy answered ·

2 Answers

RCD tripping
I have installed a Victron Multiplus 12/3000/120-16/230V inverter in my widebeam boat, AC is fed from a diesel generator. With the inverter in the on position AC is fed through an RCD to the consumer unit supplying the boat’s domestic circuits. This works fine no problems.
With the generator running and the inverter on postion, it trips over to charge the batteries; bulk,absorption and then float. Or with the generator running and the inverter in charger only, it goes through the bulk, absorption and float.
The problem is when the generator is running, the slightest AC load trips the RCD. I understand that an unbanlanced load would trip the RCD, but this does not happen when the inverter is fed from the battery bank, and in the on postion. Neither does it happen when the generator is running and fed through the RCD to the consumer unit.

Any help as what to do would be greatly appreciated. TIA.

tomssong asked
jethtran answered ·

2 Answers

Where to connect remote start on SmartGen Generator Controller
User manual I have a 48v 5000 multiplus inverter
And a 25kva generator running a SmartGen controller
I have attached the manual
Could you please tell me where I connect the 2 wire remote start to on the smartgen controller
I have shown the manual to my supplier where I purchased the multiplus but there tech is unsure


peetarr asked
fatfash answered ·

2 Answers

Grid and new Generator have different Phase Sequence, how to correct?

My 3 Phase Grid sequence is (According to the grid meter on the color controller) L1-L3-L2


I just connected my new generator and with the....

Multiplus's switched to "on" Inverter lights on constant. No Battery Charging.

Multiplus's switched to "charger only" main lights flash on line 1,2, main and float lights flash on line 3, No Battery Charging.

I then checked my 3 phase Generator sequence and (According to the grid meter on the color controller) it's L1-L2-L3

What is the best way to fix this issue, I guess the system is set up for L1-L3-L2 as it all works fine when the grid is connected.

northernboy asked
northernboy answered ·

1 Answer

Victron MultiPlus II - GX 48/5000 interim operation on Freedom Won 5/4 possible ?

I would like to operate Victron MultiPlus II - GX 48/5000 on an interim base together with one Freedom Won 5/4 Li-On battery. Later I plan to implement another Freedom Won 5/4 Li-On battery and operate both parallel. Is it possible to limit the settings in the MultiPlus at first from 5000W to 3000W ? Or do I have to choose the GX 48/3000 ?

zebtec-foundation asked
shaneyake answered ·

2 Answers

Multiplus output requires RCD protection

Hi folks,

I have a question regarding RCD-protection for the Victron MultiPlus 12/500/20-16.

External AC detached:

The manual says that it is equipped with a ground relay that connects neutral to ground if no external power supply is attached. And for a mobile installation (mobile home) the case must be grounded to the chassis.

For my understanding this is still a TN system that would require a RCD at the inverter output that could detect leakage current to ground/chassis and trip.

External AC attached:

The system is connected to external ground (again TN system) and the RCD on the input side would be in line with the RCD on the output side. Both RCDs would fulfill their duty but the input side RCD would also protect for inverter failure.

Is this understanding correct? So do I need an RCD on input and output side?

I have seen several setups (with only a single socket as well as several sockets) that do not have an RCD on the inverter output side. I understand this is okay in an isolated (IT) system but due to the ground relay I believe this does not apply here.

Thanks for your comments.

plusaufmasseknalltklasse asked
plusaufmasseknalltklasse commented ·

3 Answers

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