ax2090-tt80-0002

The AX8000 servo drive series is suitable for operation on grounded single-phase or three-phase grids. Connection to TN grids (French: Terre Neutre) or to TT grids (French: Terre Terre) is possible without further measures. For all other grids, operation is only possible on so-called isolating transformers. An isolating transformer is a mains transformer that transmits the mains voltage to the secondary winding via a protective isolation (electrical isolation), where it makes a grid available with a grounded star point.   The use of an isolating transformer is possible with the following grid forms:   - IT grid (French: Isolé Terre) - Ungrounded grids - Asymmetrically grounded grids   Typical American grids for which an isolating transformer is required:   - Corner-grounded Delta system / solidly-grounded Delta system - Ungrounded Delta system - Ungrounded split-phase system (2 phases, 180° phase shift) Note: Operation on the split-phase system with a grounded midpoint is allowed without an isolating transformer