For example, the batteries remain full and VictronMultiPlus starts to increase the frequency from 50 to 52 Hz in the home network to stop Fronius. Please tell me, at this point, can the MultiPlus continue to supply current to a GRID with a frequency of exactly 50 Hz?
When the Victron is locked into the Grid (in ESS or recharge mode) it cannot alter the frequency so the Fronius doesn't ramp back it's production through frequency shift, it's power is simply passed back through the AC IN terminals and out to the Grid as Export. It is worth noting that if you are running a system like this in ESS mode you must still place the Fronius into "MG50" as the country code AND select yes when asked if there are PV inverters on the AC output in the Victron ESS Assistant. This ensures that if the Grid fails, the Victron "íslands" and the batteries get full that the system will control charging by frequency shift.
Thank you for watching. It depends on the system type and the layout but usually I try to avoid installing more than 2 Strings onto the MPPT DC Charge Controller basically to avoid having to install fuses on each string - this saves time and a small amount of cost and removes another point of potential faults. The DC-direct-to-battery is mainly there to give the system automatic black-start capability for cases where the battery has run low (overnight usually) and the Generator hasn't started (flat generator battery, out of gas etc.) then the ONLY way of getting the AC Solar system back up is to trickle charge the battery back up to a level where the main battery inverter automatically starts up, this can be done with just a few Panels charging the battery directly. This Black-Start capability is very seldom needed but when it is it can avoid catastrophic results such as Freezers full of food going off, security systems dying etc.
Taspac Energy Thankyou for your reply and a excellent and informative vid. What amount of wattage would you allow for the DC direct to battery trickle charge?
@@douger1517 As much or as little as you wish really. The ideal amount of DC would be to try and balance the night-time load, conversely the amount of AC coupled would be approximately equal to the daytime load. This way the PV gets to the load with the least amount of conversions = best efficiency.
Can you recommend Victron 3 phase model which can be used with fronius symo 3 phase inverters Ac coupled with micro grid functionality in case of Grid Faliure So Fronius symo can work with Victron as a micro grid.
well explained...I do have some Qs for you. First I have an existing grid tied sunny Boy solar system of 2 strings of panel totaling approx.12kw. I have a 48vdc 15kw 120/240 split phase pure sine-wave inverter/charger with no MPPT solar charger with 640ah battery string. The inverter manual say's The 15000 watt inverter features Dry Contacts Providing Frequency Switch Between 60Hz / 62.5Hz as the secondary charge control of on grid inverter. It can control excess energy from the grid tie inverter when the battery bank reaches a voltage within the manufacturer’s limit. To accomplish this, you can use a voltage-controlled relay to close the dry contact to switch the output freq from 60hz to 62.5Hz, shutting off the grid tie inverter system temporarily. The paragraph end there with no explanation as to what I can do with that temporary shut off I want to set up the A/C coupled system, I am not sure what I need at this point. Do you have some suggestion or maybe a good source in which I can better educate myself in this area...any help is greatly appreciated.
So in another words the Primo is there to covert and take most of the load when there is sun where the Victron is there to act as grid and power the primo ? It’s kind of cool setup
Yes you can, the Victron version of ‘solar web’ is the VRM Portal (VRM = Victron Remote Monitoring). The VRM Portal has a HUGE amount of data available from every connected device. Programming changes are also possible through VRM.
I just watched your video and I’m planning to setup one just like what you have and I have a question about victron multiplus, is your victron equipped with anti islanding feature? Thanks!
Yes it is, however there are different rules for different countries so for NZ and Aussie the old MultiPlus inverters do not comply for connection to the national grid however the new MultiPlus II inverters do comply.
I have no idea about who you are or what your role in this system is BUT Having worked as an Electrician for the last 20yrs in England and Australia there is NO way on earth I would be trying to promote my work while walking under dodgy wires (ac coupled system) you/ your Electrician are on the Hook for the WHOLE house after adding a inverter as its classed as a Major change to the installation. Best of luck to you and thanks for the vid but I personally would fix that mess then try making vid again :(
Thanks for your comment. I agree with your observation of the messy wiring. However, often (and I assume in this case - I wasn't the installer) there is a very clear demarcation between the Electrician Responsible for the Solar Power system and the person responsible for wiring the house. There are two ECOCs written and two ROIs and these are often completed by two separate companies. However, there IS an obligation an electrical worker has to report any life-threatening or dangerous work to the board if they see it.
Excellent! Just what I needed to know, cleared up many questions I had, thanks Taspac
A pleasure Drew - thanks.
Really awesome post...many thanks.
this is a very professional tip well explained, thank you for sharing from Spain.
Thanks - glad you enjoyed it and hope you are all doing ok over there!
love it. covered all in 15min.
Thanks - all the basics but certainly not everything! Glad you liked it.
For example, the batteries remain full and VictronMultiPlus starts to increase the frequency from 50 to 52 Hz in the home network to stop Fronius. Please tell me, at this point, can the MultiPlus continue to supply current to a GRID with a frequency of exactly 50 Hz?
When the Victron is locked into the Grid (in ESS or recharge mode) it cannot alter the frequency so the Fronius doesn't ramp back it's production through frequency shift, it's power is simply passed back through the AC IN terminals and out to the Grid as Export. It is worth noting that if you are running a system like this in ESS mode you must still place the Fronius into "MG50" as the country code AND select yes when asked if there are PV inverters on the AC output in the Victron ESS Assistant. This ensures that if the Grid fails, the Victron "íslands" and the batteries get full that the system will control charging by frequency shift.
@@taspacenergy4941 Thank you very much for the answer! I will now slowly try to understand what you said. :)
@@dethleffsglobebus8624 Good luck with that - I have trouble understanding what I say too sometimes!
This same question has been posted on several channels without replies, lol, lucky you got one here
Great video, wth both AC & DC coupled system what percentage of panels should be Dc to battery?
Thank you for watching. It depends on the system type and the layout but usually I try to avoid installing more than 2 Strings onto the MPPT DC Charge Controller basically to avoid having to install fuses on each string - this saves time and a small amount of cost and removes another point of potential faults. The DC-direct-to-battery is mainly there to give the system automatic black-start capability for cases where the battery has run low (overnight usually) and the Generator hasn't started (flat generator battery, out of gas etc.) then the ONLY way of getting the AC Solar system back up is to trickle charge the battery back up to a level where the main battery inverter automatically starts up, this can be done with just a few Panels charging the battery directly. This Black-Start capability is very seldom needed but when it is it can avoid catastrophic results such as Freezers full of food going off, security systems dying etc.
Taspac Energy Thankyou for your reply and a excellent and informative vid. What amount of wattage would you allow for the DC direct to battery trickle charge?
@@douger1517 As much or as little as you wish really. The ideal amount of DC would be to try and balance the night-time load, conversely the amount of AC coupled would be approximately equal to the daytime load. This way the PV gets to the load with the least amount of conversions = best efficiency.
Can you recommend Victron 3 phase model which can be used with fronius symo 3 phase inverters Ac coupled with micro grid functionality in case of Grid Faliure
So Fronius symo can work with Victron as a micro grid.
well explained...I do have some Qs for you.
First I have an existing grid tied sunny Boy solar system of 2 strings of panel totaling approx.12kw.
I have a 48vdc 15kw 120/240 split phase pure sine-wave inverter/charger with no MPPT solar charger with 640ah battery string.
The inverter manual say's
The 15000 watt inverter features Dry Contacts Providing Frequency Switch Between 60Hz / 62.5Hz as the secondary charge control of on grid inverter.
It can control excess energy from the grid tie inverter when the battery bank reaches a voltage within the manufacturer’s limit.
To accomplish this, you can use a voltage-controlled relay to close the dry contact to switch the output freq from 60hz to 62.5Hz, shutting off the grid tie inverter system temporarily.
The paragraph end there with no explanation as to what I can do with that temporary shut off
I want to set up the A/C coupled system, I am not sure what I need at this point.
Do you have some suggestion or maybe a good source in which I can better educate myself in this area...any help is greatly appreciated.
Excellent video.welldone
Thank you!
great explanation. thanks a lot
So in another words the Primo is there to covert and take most of the load when there is sun where the Victron is there to act as grid and power the primo ? It’s kind of cool setup
Correct - and thanks!
Can I ask a question, does the blue series victron 5000w inverters have AC couple capability?
Short answer - yes. This must be set up in the programming of the inverter using the PV Inverter Assistant.
great content
Can we see SOC graph in solar web
Yes you can, the Victron version of ‘solar web’ is the VRM Portal (VRM = Victron Remote Monitoring).
The VRM Portal has a HUGE amount of data available from every connected device. Programming changes are also possible through VRM.
I just watched your video and I’m planning to setup one just like what you have and I have a question about victron multiplus, is your victron equipped with anti islanding feature? Thanks!
Yes it is, however there are different rules for different countries so for NZ and Aussie the old MultiPlus inverters do not comply for connection to the national grid however the new MultiPlus II inverters do comply.
I have no idea about who you are or what your role in this system is BUT Having worked as an Electrician for the last 20yrs in England and Australia there is NO way on earth I would be trying to promote my work while walking under dodgy wires (ac coupled system) you/ your Electrician are on the Hook for the WHOLE house after adding a inverter as its classed as a Major change to the installation.
Best of luck to you and thanks for the vid but I personally would fix that mess then try making vid again :(
Thanks for your comment. I agree with your observation of the messy wiring. However, often (and I assume in this case - I wasn't the installer) there is a very clear demarcation between the Electrician Responsible for the Solar Power system and the person responsible for wiring the house. There are two ECOCs written and two ROIs and these are often completed by two separate companies. However, there IS an obligation an electrical worker has to report any life-threatening or dangerous work to the board if they see it.