I now have a brand new Quattro 48v 230v 10kva.
My previous inverter was destroyed by a nearby lightning storm when we were not home.
There is no evidence of a strike anywhere close - normally we see a tree trunk that has conducted the strike down the cambium layer or on rarer occasions the whole trunk explodes into shards.
The solar MPPT controller survived so I am assuming the destructive voltage spike arrived at the inverter site via telephone cables and somehow interconnected to the old inverter 48v DC input
The telephone cables and exchange system also suffered a major fault.
When I dismantled the old inverter I found that a square capacitor across the 48vDC input had disintegrated. Some of the inverter control circuitry still functions however the auto start upon load detection facility is not working hence it does not produce any output.
The old inverter had functioned flawlessly for over 30 years despite many previous storms including several nearby lightning strikes on trees within 100 metres radius.
My immediate concern is to ascertain how vulnerable the Quattro is and what measures if any I can take to prevent another inverter failure?
In studying the Quattro instruction book I find that if offers no advice on this subject whatsoever....