Recording duration: 56 minutes

Chuck Yung
EASA Senior Technical Support Specialist

When a core loss test reveals localized hot spots, or visual inspection identifies physical damage, the ability to repair the damage in a cost-effective manner means the difference between repair or replacement.

Topics covered in this recording include:   

• What core loss flux level is correct?
• Clearing small localized hot spots
• What is the best way to clear surface shorting?
• Grinding versus spreading the laminations
• “Watt knocking” or physically manipulating the core
• Debunking the rusting myth — Coreplate, class F red insulator, waterglass
• Restack: complete or partial — Does lamination grade really matter? 

This presentation is intended for owner-managers, shop supervisors, machinists, service center technicians, and safety directors.

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Categories: Technical topics, AC motors, Stators/windings, Laminations, Repair procedures & tips, Testing, Motor testing, Training, Webinar recordings

Tags: Laminations Stator core Core loss testing

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