Zero-Point armor doesn't exist. That is, once it is attached to a ship and then enabled, it is difficult to even detect that it exists using normal sensors. It is not a stealth material . Rather, it is almost like wrapping a black hole around a ship.
Zero-Point armor doesn't create a gravitation field by default. Instead, it creates a reverse gravitational field based on reacting to force. The greater the force impact on the armor, the more reverse gravitational force is created. Zero Point armor has a nearly infinite potential for refracting kinetic mass impacts. The net effect is that when struck by mass driver weapons, they literally bounce off harmlessly.