Robot by Mitsubishi reduces generator time for inspection

Mitsubishi Electric has developed a 19.9mm inspection robot that can inspect the gap between the rotor and the stator, reducing time for inspection.

Mitsubishi Electric has created a 19.9mm inspection robot that can inspect a power generator without removing the rotor. It passes through the narrow gap between the rotor and stator, reducing amount of time spent on inspections, according to the company.

Conventional generators inspections require 34 days to complete, especially due to the time it takes when removing the rotor. Mitsubishi said with the 19mm inspection robot, inspection time may be cut down a week, without compromising accuracy.

Mitsubishi’s 19mm inspection robot can execute assessment of stator wedge tightness, visual examinations and core insulation inspections. It incorporates a travelling mechanism that includes a crawler belt and flat. It is capable of inspecting mid- and large-sized generators.

The robot’s tapping mechanism uses Mitsubishi’s vibration analysis technology to detect five levels of stator wedge tightness, unlike the three levels detectable by a conventional robot.

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