Just got the email from Victron on releasing the Multi HS19 Solar 15k. Congratulations!
As an installer, it looks interesting for small to medium scale business applications. Despite my strong preference for the Victron ecosystem and software, so far I haven’t considered them in such projects due to the amount of inverters+space and lack of server-rack support.
This one however has all 3 phases in one unit and works with a rack, with a better (not great) solar input voltage range.
There’s a few concerns I have with the design and specs, I’m curious if anyone can help to think along.
Solar Isc is only 13.5A, I think not many panels support such a spec.
Inverter power is 15 kW while charger power is 33 kW. Charger input amps is even higher than the passthrough current.. Is that purely due to solar or can it actually pull 33 kW from the AC line?
What are the opinions about ‘creating’ HV batteries? E.g. just put 16 or 17 Pylontech US5000 in series or go with a specific HV battery pack? (as seems to be suggested by the figure in the spec sheet). The voltage range seems pretty narrow to me and realistically needs exactly 16 or 17 units in series to work well.
Does the Multi HS19 support multiple units in parallel? E.g. if I want to build a 60 kW inverter set-up
13,5A Isc makes it not usable with modern PV-modules. But it’s even not usable for the most retrofit systems because most existing string have more than 600V Uoc.
In the datasheet you can see parallel operation is not supported yet, but it will be with future hardware revisions.
Although I am happy it’s finally here, my initial thoughts are that for a product that’s been this long in development i expected a littebit more. The ISC is indeed too low for modern panels, and although the max string voltage of 600V is a step in the right direction, this is a voltage expected from a monophase inverter, not a 3-phase, where 1000V is the norm.
The Max inverter capacity of 15kw is a little bit on the low side in my opinion if i read the SPECS the right way?
Most 3 fase homes in the Netherlands have 3x25A. The Multi RS6000 or the Multiplus 6k5 do 26amps on 1 fase if you calculate.
If you calculate the amps on a single fase for the HS19 it is getting only ~22 amps.
Yes, I received that announcement as well, and I have to say that, from the perspective of a system integrator and installer, the specifications were not particularly impressive. Hopefully, there will be other models introduced within the HV range.
Apart from the commonly known US series, Pylontech also offers highvoltage systems like the Powercube H1, which are also 48VDC modules but are to be connected in series to form a HV battery or the HM3 which are 32VDC modules
Indeed, but I tried to point out that some daring users would try to do the series thing with normal 48V modules, just by looking (or worse, not) at the picture.
Those 48V modules have different communication between them and stand alone management…
And one good step forward, could be - from the pictures - that it could read without a Cerbo (??) the BMS info directly from the battery?
Otherwise why the need of connecting the BMS CAN to both Cerbo and inverter?..
Waiting for the manual, that it’s not (yet) present on the download section.
We would have to wait over 8 months for stocks to get to us. Usually EU gets it frist then Africa after a bit. So still waiting. Maybe V2 will be out by then who knows.
I would say it’s not Victrons fault if someone doesn’t read the manual (of the battery) and just connecting some random batteries in series to get to 600V (or more).
Aside from that, installing a high voltage system isn’t a DIY project, that only should be done by trained professionals.
Nowhere does it name a battery manufacturer in the spec sheet. So its a bias on the part of a reader that leads them to a conclusion not stated.
All HV stacked batteries (i have seen and used so far besides the all in one boxes) use connectors similar to pylons so its not just a Pylontec specific way of connecting battery leads. So it cant be said that’s what the picture was even alluding to.
I believe that if people knowingly assume all the associated risks without having the necessary qualifications or authorisation to carry out such work, and those risks affect only themselves without compromising the safety of other innocent people, then they should not be prevented from doing so. In a way, it is a form of natural selection, however cynical and callous that may sound.
