Yes, you conect the positive to one side and the negative to the other. The earth is in yhe lower side. This is a parallel conection to the PV wires. When you have a surge in any of the array wires, like 10kA, the device will send that voltage and amps to earth. In that case, the visors will go red and you need to replace them. This will protect your charger from high voltages. The fuse protect from high current. If you search online you will find some shematics about to use of SPD in solar arrays.
I see many youtube channels and it is very strange most of DIY guys dont know this, and dont use it, to protect their sistems. This is a very cheap device and you will find it easy on aliexpress.
Just be sure about the working voltage, must be a DC voltage, the aproximate working voltage of your array, mine is 450volts so i choose a 500vdc, and about 10kA opening for the SPD.
Yes, you conect the positive to one side and the negative to the other. The earth is in yhe lower side. This is a parallel conection to the PV wires. When you have a surge in any of the array wires, like 10kA, the device will send that voltage and amps to earth. In that case, the visors will go red and you need to replace them. This will protect your charger from high voltages. The fuse protect from high current. If you search online you will find some shematics about to use of SPD in solar arrays.
I see many youtube channels and it is very strange most of DIY guys dont know this, and dont use it, to protect their sistems. This is a very cheap device and you will find it easy on aliexpress.
Just be sure about the working voltage, must be a DC voltage, the aproximate working voltage of your array, mine is 450volts so i choose a 500vdc, and about 10kA opening for the SPD
Thanks. Yes I have watch many youtubers and they don’t say anything about it. My solar project has cost me £23,000 at this point and I don’t want it being destroyed. I have a couple of 63 amp dc isolators. One for each of my arrays could I sand which this 4 pole SPD between them and it will protect both arrays? I’m attempting to attach pics ?.