Sorry, but the diagramms from storage are smoothed to nothing…
I know my water boiler uses 2500W, in the live view I see them. In a 10 days view I don’t see anything over a couple of hundred watts, its all compressed.
The same is true for your PV voltage, if you see 145 max… it could have been 245…
Quit whining, you know yourself that the string Voc of your installation was over 150V.
I agree that Victrons sales strategy is miserable, selling a 150/xx for 150v use, where the hard limit is also 150v.
For me its usable for 130v, so imho it should be promoted as such.
Same for the inverters, selling as 5000, usefull for 4000W.
Doesn’t leave the best impression.
No, this didn’t apply to you, you knew beforehand you where over the hard limit…so you accepted the mppt would die, sooner or later.
Now you are responsible for the 9 dead persons…
Sure because if its specified for 8 it is tested with 24.
Meaning : you should have calculated the Voc to 50v for the 150/xx mppt
What type of panels do you have?
I fail to understand how the addition of a Battery Protect with a voltage range of 6-35VDC in a circuit where the PV can output 150VDC is going to protect anything. What am I missing?
The 48V version can handle up to 60V safely. The voltage won’t jump instantly to the panel’s open-circuit voltage; instead, it will gradually rise. As soon as it exceeds the high-voltage limit, the system will disconnect. If the voltage continues to rise unchecked, damage will eventually occur — you’re right about that. This approach gives you some buffer time, and you can set an alarm for added protection. However, for full protection, you’d need a much more industrial setup. It’s much simpler and safer to operate within the equipment’s designed voltage range.
Looking at the image, it appears the tracker was still functioning above 68V. If the battery had been disconnected at that point, the tracker might have stopped tracking, possibly preventing a complete short, although, as shown, a short eventually did happen.
OK, so this is my take on the situation and my experience with my 100/50 solar controller.These units are rated @ an absolute maximum with a peak that should never be exceeded even for a microsecond. I’ve not exceeded 100V, but I’m scary close @ 95.6V when my batteries have reached full charge and the absorption cycle has been completed. I’ve also seen 50.4 amps output and the controller just shuts down to zero output for 90 seconds or so. On advice from another awesome member I pulled the charge rate down to 48 amps and I’ve not seen a current dive to zero since… However, that controller is hot, too hot to touch which means over 140F with my calibrated welder hands. I get it, if it’s rated at whatever, why can’t I do that for 4-6 hours a day? Let me make a comparison.. Say I bought a Dodge Hellcat with a rated HP of 707. Dang I paid a lot of money for it so I’m going to run it around a 3 mile track for 4 hours at full throttle for a day. After a few weeks it sends a rod through the pan and crap! I’ve got a major fire and I darn near died! What the heck, why didn’t Dodge put a throttle limiter in! I’m suing them!
Rattle that around your brains. Just because you can, doesn’t mean you should. Maybe Victron should down rate their products to prevent people from hurting themselves. Point in context… I have a 900W (BTW, VA doesn’t equate to watts) water distiller that came with a 18 gage cord. I saw temps of over 150F at the outlet, yikes. I swapped out a well made cord of 14 AWG and the temp has never reached 100F.
Be your own policeman or be destined to be disappointed.
Why do you keep posting “awaiting deletion”? What action are you attempting to solicit?
Probably he’s upset and wants to delete his content.
But that could be done more easily by soliciting anonymization of the account.
This way the messages would’ve remained, but under an anonymous account/name and maybe, on the future, helped someone on the same situation…
It is a shame that the OP deleted all their posts. It was a very informative thread and a salutary warning to make sure you follow the Victron’s specs to the letter when installing solar on the DC side.
Weirdly, when I look at the Battery Protect specs it is not designed to protect the battery on the charge side but rather the discharge side - to stop quiescent currents taking the battery too low after it has reached low voltage and to protect against overvoltage to sensitive DC equipment.
"Over voltage protection To prevent damage to sensitive loads due to over voltage, the load is disconnected whenever the DC voltage exceeds 64 V. "
So it’s excellent information that it can be used between an MPPT and the battery to protect the battery in the even of an over-voltage event. Perhaps Victron need to update their data sheet and implementation guide to reflect this or perhaps it’s really not suitable for this?
