Customer has a couple VFD's (Pump Smart PS75) One feeds a 7.5HP pump motor and the other a 15HP pump motor. I was told they are periodically tripping out on what they say are voltage spikes when it storms and they are having to reset them. They are fed from a 240V 3-phase panel with high leg. I'm thinking as a solution to just put TVSS on the panel or should I be looking into line reactors? Thanks in advance.