My quess is a voltage surge is frying your panel. Static can do this. But, if the grounding and bonding is solid, then that leaves surges caused from other electrical operations in the immediate vicinity, or lightning. Both can be mitigated by properly sized surge protection devices on the branch circuit and feeder or service.
Another thought is the centrifuge itself. If it can build up a static charge, then that charge must be bled off. Does it discharge through the controller? A careful look at the device that is designed to bleed this charge might be in order.
