Lost both of my inverters last week in a big electrical storm. Both units were ON at the time of the storm. Neither are fried, they both show no physical damage, just wont work. One is a Victron Quattro, that just says it’s in permanent overload. The other is a Chinese 3kw MPPT charger / inverter, its output voltage has gone unstable and it reports a constant fault. At the time of the storm I have my incoming Grid breaker open so zero connection to outside power. My two inverters are in different parts of the property 75m apart. Another casualty was a cheap 10w LED floodlight, just doesn’t work any more. Only conclusion i can come to is that this was EMF? Anyone go any ideas on how I avoid this damage in the future?
Wow, that’s a strange one! I’ve only heard of an inverter failing after a nearby lightning strike that hit the lines. Was there a lot of lightning nearby? Could it be possible that the solar array way hit?
There are many different surge protection devices available for both DC and AC circuits. It would be good to find the exact source of the surge (or EMF?) https://www.phoenixcontact.com/en-au/products/surge-protection