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DC couple Quattro + RS Multi

Hi everyone,


Would it be possible to DC couple a Quattro and an RS Multi?

My Quattro is acting up, not charging with excess (I have both Fronius on AC input and Huawei on AC Output with AC sensor). Right now, the Quattro is with my old lead-acid batteries (i hoped by removing the JK BMS from equation, it would start charging as it would see a "dumb" battery pack with only the BMV700 shunt). But what I hope to do soon, is expand the new LFP pack and leverage both inverters on the same pack (the RS alone might not be able to cover all my loads as I run exclusively on electric with 2kw boiler, 2kw heatpump, all electric appliances, etc.).


I think best would be to use RS with it's own 3kw array, DC coupled with Quattro, which would have the 5kw Huawei on AC Out and on quattro's AC IN have the Fronius between him and the grid.


Opened to advice :)

Thanks!


iromeo asked

0 Answers

add RS 48/6000 to EasySolar II GX 48/3000/35-32?

I have an EasySolar II GX 48/3000/35-32 with 12x 320W nominal solar panels, 8x 12V sealed Lead Acid Deep Cycle batteries and a BMV-700. We are 100% off grid in northern New Zealand.

The inverter component struggles when using power tools (we are building a home off grid) despite a soft start device. I also wonder why a soft start capability is not built in to every solar system?

The system also struggles when the sun is shining and I use excess power to charge my electric vehicle (standard mains charging unit, draws ~1800W continuous). It raises high temperature alarms which (if I don't disconnect the EV charger in time) result in a shutdown. I don't understand why this should be given that the load seems well within the advertised parameters.

So my thought is to add a more powerful 'compatible' inverter to the system that gives us much more reliable power draw- short term for electric motor loads, and also sustained to charge the EV when the sun is shining. As I understand it the RS 48/6000 would be DC coupled (connected to the batteries in parallel with the EasySolar) in this circumstance but would need a data connection back to the GX component of the EasySolar.

I am keen to hear

* whether I am trying to solve the wrong problem, or

* what would make the RS 48/6000 not a great fit to the situation?

Thanks

Graham

spicedreams asked
Alexandra answered ·

1 Answer

I have a question about RS Smart Solar inverter

Because the RS Smart Solar inverter has four mc4 inputs if they only have one mppt

It is necessary to use two positive and negative, or you can use only one input of negative and positive

If I have a (550 x 7 )solar panel with a current of 17A. How do I connect it?


jeremias asked
Guy Stewart (Victron Community Manager) answered ·

1 Answer

MPPT built-in Inverter RS 48/6000 doesn't appear on GX Device !

Hi there, my new inverter RS 48/6000 is running now with SmartShunt and Cerbo GX and a Fronius Primo 5.0. Unfortunately, I can't see the MPPT power on screen, and the MPPT doesn't appear in device list of the Cerbo. Firmware on GX is 2.57 (2.60 release candidate was running at first but the inverter doesn't appear with that version !!).

All the devices appear only on VictronConnect.

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Stef asked
Alexandra commented ·

4 Answers

Would it be possible to parallel two RS 48/6000 Inverters?

Can the RS 48/6000 Inverter be paralleled with another RS 48/6000 Inverter to increase capacity?

solarworld-tt asked
Guy Stewart (Victron Community Manager) answered ·

6 Answers

Multi reset on Error 276

Inverter reset itself when the below error popped up, but 20.0v is impossible as it's a 48volt battery system, after resetting Battery voltage is sitting at a healthy 50.9v. What is the cause.of this error. Comms loose, maybe?

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redrum06 asked
Alexandra answered ·

1 Answer

Short circuit on VE.CAN bus?

i'm attempting to setup venus os on a raspberry pi and to connect it with a waveshare can hat to my RS smart solar.

A loopback from CAN0 to CAN1 on the raspberry worked excellent, communication worked and no errors are logged. Connecting to the inverter didn't work though.

I realized I didn't have a termination resistor on the inverter end (the raspberry board has one included on the board so thats why the loopback worked out of the box), so I made a canbus terminator .. and it burned up once I put it in the inverter. Literally sparked and melted away. I checked the power requirements out a bit and it should have been able to handle it, so I figured I messed up the terminator. I made a new one, that seemed to remain intact, but communication still didn't work.

Finally, I figured if the terminator is really no good I can use the raspberry at both sides, so raspberry can0 -> inverter -> raspberry can1. That would have 120 ohm termination resistors at both ends, and the loopback already was proven to work; this is just an extra node in between .. and as soon as I plugged it the second rj45 plug on the inverter end (same port that burned of the terminator before) it burned the raspberry CAN board.

I'm really confused, from what I read the CAN bus itself should be current limited and unable to damage itself even if you connect L to H, or even H to VCC. So even if I messed up the wiring (which I measured out before, 120 ohm termination confirmed on all parts), I wouldn't expect such catastrophic failure.

I'm ready to throw in the towel and get a cerbo gx with victron cables and what not just to get rid of the headache here, but I'm afraid the exact same thing will happen, if the inverter is actually the culprit and somehow the VE.CAN port is defective somehow.

Does anyone have an idea what went wrong and how I could check the correct functionality of the inverter VE.CAN port(s)?

patrickc asked
patrickc commented ·

1 Answer

RS 48/6000 battery SOC discrepancy between CCGX & Inverter

System is including:

  1. RS 48/6000
  2. CCGX
  3. BYD LVS

RS 48/6000 is connected to the CCGX via VE.Direct

Problem: CCGX shows 49% SOC but Inverter shows 98%

Dose anybody know how I should fix this problem?

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aydin-1 asked
wkirby commented ·

1 Answer

Inverter RS 48/6000 230V Smart Solar reliability and AC charging version

Doing some system planning for a global voyaging boat. The RS 48/6000 looks like a great solution because I can keep the AC system completely separate from AC shore power. In effect all AC loads will always be on inverter 100% of the time. This will eliminate voltage and frequency issues for when shore power by using separate AC battery chargers in combination with robust solar and alternators.

Questions:

1- I got feedback from a Victron dealer that "HF inverters" like the RS 48/6000 are less reliable and should not be used for full time. Suggested that reliability was not as good with HF designs and they can't handle extended use. Is this really true? I understand that many "Chinese" inverters are HF designs and may contribute to the opinion but is there something inherently flawed in an HF design making it not suitable for full time use? Any reason why a more traditional larger transformer design inverter may be a better choice?

2- Understand that you are launching a Multi RS Solar 48/6000/80-400/80 charger version in January. This sounds like the perfect solution for my setup. Are specs available for this? Key question is if the 80 amp AC charger is simply that, an AC charger and the AC input is isolated (all AC loads are 100% inverter). There is no relay correct? Reason I would want this is to enable global shore power (using an autotransformer) that is frequency independent. Also, is the MPPT charger output shared with the AC charger or is it completely independent?


robin-wessel asked
Herve RV Nizard commented ·

1 Answer

Inverter RS 48/6000 Smart vs MultiPlus II 48/5000/70-50

Just trying to make sure I fully understand the benefits and rationale behind the Inverter RS/6000 Smart vs sticking with the tried-and-tested MultiPlus II.

Are there any videos or other training material I've missed explaining the reasons for the shift to HF inverters away from the old LF technology?

The Victron marketing and training material used to highlight the benefits of LF inverters over HF ones, but I haven't seen anything yet explaining why that situation has now been reversed with the introduction of the RS series?

As best I can tell the only practical benefits of choosing the "Inverter RS 48/6000 Smart" over the "MultiPlus II 48/5000/70-50 are:

- 6000VA/4800-5300W (batt voltage dependent) vs 5000VA/4000W 'continuous' @ 25 deg C
- 100A battery charger vs 70A
- 11kg vs 30kg
Am I missing anything else?
I haven't seen any explanation for why Victron have changed their tune on HF being inferior to LF inverters for reliability?
I may have missed a press release or training video, if so I'd be grateful is someone could point me to a link...

fancourt asked
fancourt commented ·

1 Answer

Inverter RS Smart/Smart Solar (non-PV) AC battery charging via AC-out?

Hi everyone,

Have searched but can't find if anyone has asked this before...

First - a lot of the discussion on here about these RS inverters involves confusion between the "Inverter RS Smart/Smart Solar" and the "Multi RS Solar"...

I am talking about the former (without an AC-in), not the latter (with an AC-in).

According to the relevant manuals, both the "Inverter RS Smart/Smart Solar" and the "Multi RS Solar" are capable of supporting 100A battery charging via AC-coupled PV connected on their AC-out.

My question is this:

Is there any reason (DNO regulations notwithstanding) why this AC-coupled PV battery charging feature could not be (mis)used to enable mains (or generator) AC charging of the connected battery, provided that:

a) any AC-coupled PV was first disconnected from the system and
b) a mechanism was implemented to disconnect the mains/generator AC _BEFORE_ the Inverter RS attempts frequency-shift control at the point where the battery reaches the programmed absorption voltage?

This question is mainly to enhance my understanding of these products rather than for system design purposes. It would however be useful to know if this was an option as a temporary/emergency solution (generator rather than grid).

Obviously for a system design requiring mains AC battery charging the Multi RS Solar is the correct product choice.

Many thanks!

fancourt asked
fancourt commented ·

1 Answer

Multi RS Solar 48/6000 no full ESS assistant?

Hi, After trying to get Remote VeConfigure working (Enabled two way comms etc) to install the ESS assistant on the Multi RS Solar 48/6000 I am now getting mixed messaging about if this is even possible:


If I follow the ESS design and installation manual: (https://www.victronenergy.com/media/pg/Energy_Storage_System/en/ess-introduction---features.html) chapter 1.2 Components refers to the following link: https://www.victronenergy.com/inverters-chargers of where the Multi RS 48/6000 is listed.


The Victron Connect application on the phone also lists an "ESS" section where I can select 4 mode's: Optimized with/ w/o battery life, keep batteries charged and external control


At the local dealer I explained I already have installed an ET112 energy meter for measuring AC solar and an ET340 energy meter and the main grid feed-in to be able to allow for phase compensation (see 7.2. Single-phase ESS in a three-phase system in the ESS manual). According to the dealer this should be possible.

Can anyone clarify if I can use this Multi for full ESS capability? I can see Battery, Inverter, Energy meters in the Venus GS, The ESS screen in the Venus Gx keeps showing: "ESS wizard not found"


Looking forward to your feedback!

flashfire78 asked
gabius edited ·

1 Answer

Charging by means of sinewave inverter connected to Quattro AC-IN-1 (generator)

We have a vehicle (van) with a 12 V system and 4 kVA Quattro. We wish to supplement the 48 V (Pylontech) battery charge, when driving the vehicle, by charging the battery from the vehicle 12 V supply.

We have tried two different 1 kW 12 V to 230 V sine wave static inverters connected to AC-IN-1 (the generator supply to the Quattro). Despite adjusting the Quattro input current limit to minimum (4 A), shortly after the inverter supply to the Quattro is enabled the 1 kW inverter is destroyed. The output H-bridge at the output of the 1 kW inverter becomes damaged shorting the high-voltage supply in the inverter.

We believe that the Quattro inverter is essentially back-driving the inverter mains output (once the relay clicks in) and the phase alignment is lost as soon as the Quattro draws current from AC-IN-1 and loads up the 1 kW inverter.

Has anyone out there had any good experiences with charging from an inverter connected to the AC-IN-1 connection to the Quattro?

A potentially safer charging option may be utilising a battery-to-battery charger to charge the 48 V battery more directly using 48 Vdc. Unfortunately, Victron does not produce a 12 V-to-48 V B2B charger so we are considering Sterling Power unit. The Sterling B2B does not have a communications bus and is unable to communicate with the CCGX or Quattro. Therefore, we will effectively be charging blindly.

Would this possibly cause a charging conflict or race conditions with the Quattro when the B2B charger is on if the BMS is unaware that there is another charge source connected?

There’s also a mention of having to set the float voltage of secondary chargers slightly higher than the primary master charger in order to provide a clear cut off and resolve charging conflicts between the Quattro and the B2B charger. It is unclear if the B2B has a means of adjustment.


Barry Clark asked
Alexandra commented ·

0 Answers

Is there an inverter RS with 12V or 24V in the pipeline for campervan use?

It seems the Inverter RS is lighter (and smaller) than Multiplus, which would make it attractive for campervans

plusfortynine asked
Kevin Windrem commented ·

2 Answers

Multi RS Solar Hybrid - Self Consumption Optimization

I'm trying to choose an inverter for a PV self-consumption system with LiFePo4 batteries. The plan is to run on battery when SOC is above 20% and switch the loads to grid when SOC drops below 20%. The battery must NOT charge from the grid when the loads are on the grid.

The Multi RS looks like a good fit, but I could not figure out if it has the option to DISABLE GRID CHARGING and keep only PV charging.

I've read the manual but it does not say anything about this.
I've looked in the VictronConnect Demo Library but I didn't find the Multi RS there.

The manual does mention that the "backup generator" output can be configured to switch based on SOC and I think I can use it to connect / disconnect the grid at the AC Input using an external contactor.
But I'm concerned that the Multi RS will try to charge the batteries from the grid at night and I don't want that. It should wait until there's enough PV to charge it.

Does anyone know if Charging from Grid on Multi RS can be disabled?
Thanks!

mondeoman asked
Guy Stewart (Victron Community Manager) answered ·

5 Answers

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