Guru
Joined: 13/10/2014
Location: AustraliaPosts: 1877
| Posted: 11:24pm 05 May 2024 |
Hi Klaus,
No I would not use a Nano for something as simple as an over voltage circuit. Just a few components and the Kilovac, could be powered directly from the batteries for 48V-72v units, or DC-DC supply for spare 24v unit I have.
Tey were available from an AU supplier a few months back, prices seems to go up and and down from stupid to reasonable, I looked the other day and found them up around $75.
They come in 12v-24v or 48v-72v coil, some with economizer, beware of those without.
My panels are also 2 series strings, output varies from 80v to 96v VOC, I guess I'm also a bit over cautious considering the brute current and power available from a very large Lifepo4 bank - seriously scary.
The possibility has always been in the back of my mind, granted an unlikely event, but for something so simple and relatively low cost, I feel I should include it, even if it's just for my peace of mind when I'm away.
Just had a quick look up, the units I got were a few months back at bargain prices are not there, they come and go from places in AU, but a few more I quickly found. A lot of them are 24-48v but the ones below are 48-72v with ecom.
Relay Link
Ebay link
.