A Toshiba motor with AEGIS installed at
TECHNO FRONTIER 2017.
Toshiba Electric Motors
Realizing that VFDs can destroy motor bearings through stray electrical currents, Toshiba offers AEGIS® Shaft Grounding Rings as a factory modification. AEGIS® Rings give stray current a non-destructive path to ground, protecting motor bearings from electrical damage.
Toshiba highlighted this new mod at the TECHNO FRONTIER 2017 expo, where they exhibited motors with AEGIS installed. The AEGIS shaft grounding option can be found in their 2017 Japanese catalog (translations are in progress).
Toshiba Industrial Products & Systems Corporation manufactures electric motors of up to IEC frame size 225. Larger motors are made by Toshiba's sister company, TMEIC.