Q-Dog
¯\_(ツ)_/¯
The point is, Victron has a free tool that will show him what he can do with their equipment. No need to blow up stuff to figure it out.
I'd like to point out that this is not how you get the VOC of the panels to do the math. Read the sticker on the back and calculate based on that.My logs show an absolute maximum of 37.5 V per panel with a 375 V maximum value recorded during both hot and cold weather.
Some times the best lessons are the ones that sting the most.The point is, Victron has a free tool that will show him what he can do with their equipment. No need to blow up stuff to figure it out.
I'll never forget that time I . . .Some times the best lessons are the ones that sting the most.
Which SCC specifically are you looking at? There's no such thing as a 150/30 afaik. Smallest 150V unit is the 150/35.Thanks for the discussion. Only thinking at this point, and not very good at it.
The spec sheet for the 150/30 says Protection PV reverse polarity / output short circuit / over-temperature
I don't see anything about overvoltage there.
I was on the roof yesterday making some measurements of how much wire these configurations would need.
For now I have decided to set up a test system in my office with 4x12V batteries and a few new panels. I don't have the heart to break up the 10S panels and add a bunch of wires, until the Victron knocks my socks off.
From what I have heard, it takes some work to understand how to set up and use the many functions.
I maintain my first post was correct, that it is easy to get power from the Victron MPPTs (OK, 48V*30A= 1440 Watts), they are quite affordable, but the inverters are pricey as heck.
I didn't really need to buy a car this year, the old one will do.
Cause there is no protection for over voltage, it just goes poof.Thanks for the discussion. Only thinking at this point, and not very good at it.
The spec sheet for the 150/30 says Protection PV reverse polarity / output short circuit / over-temperature
I don't see anything about overvoltage there.
Cause there is no protection for over voltage, it just goes poof.
I mean if victron did state there was protection for over voltage people would apply 200-250v and claim it’s a piece of junk, lol.
I think you need to look at the 250v line of victron mppts. 5S2P setup if you want a single device.Thanks for the discussion. Only thinking at this point, and not very good at it.
The spec sheet for the 150/30 says Protection PV reverse polarity / output short circuit / over-temperature
I don't see anything about overvoltage there.
I was on the roof yesterday making some measurements of how much wire these configurations would need.
For now I have decided to set up a test system in my office with 4x12V batteries and a few new panels. I don't have the heart to break up the 10S panels and add a bunch of wires, until the Victron knocks my socks off.
From what I have heard, it takes some work to understand how to set up and use the many functions.
I maintain my first post was correct, that it is easy to get power from the Victron MPPTs (OK, 48V*30A= 1440 Watts), they are quite affordable, but the inverters are pricey as heck.
I didn't really need to buy a car this year, the old one will do.
I'm not quitting until I hear you say you won't put more than 3 of those panels in series.
I just have to get something straight with Sunshine_eggo. I put together a string of S3 panels and measured them. On a rainy day I measured 120 volts DC on the string. So 4 would have been 160 volts easily. So he was right. I don't know why my Trina S Vertex 395 watt panels have never reached anything near the max rated VOC in my data logs.
As I said I grow orange trees and they die at -5F or around there. Tropical plants die when they are away from the house by more that 15 feet. I know from experience that the house does warm adjacent / nearby plants in winter because of the tropical plants that I have. Pepper plants I planted last year are still alive. When it does get cold, it is dark out and if there is current in the panels at that time it is less than a watt.If you’re in a warm climate, don’t count on it to stay that way. Didn’t it freeze in the Deep South in the last year or two? Unless you’re near the equator, do include the coldest recorded temp of the last 30 years of your area.