ABB Air Gap Inspector
New service provides visual inspection of the stator core, rotor core and winding without the need to remove the rotor.
ABB’s new in-situ visual inspection service uses a robotic crawler – ABB Air Gap Inspector - to examine the stator core, rotor core and winding of large motors and generators. The inspections make it possible to check for faults without the need to remove the rotor.
The robotic crawler moves in the air gap between the stator and rotor, traversing the stator core laminations using modular, magnetic tracks. It can be used in all motors and generators with air gaps of 10 mm and upwards. Unlike conventional inspection devices, which are restricted to turbo/hydro generators with very large air gaps, ABB Air Gap Inspector can be used on all large synchronous motors and generators with air gaps of 10 mm or more.