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"Long Term Reliability of Traction E-Motors. The Detection of Latent Insulation Defects"

Detect Defects Early, Drive Reliability Longer

The shift to electric powertrains demands stringent quality control for traction e-motors. Latent insulation defects such as small air bubbles, resin voids, or micro-tears can cause partial discharges that weaken insulation, leading to failures. Standard SURGE and HI-POT tests often miss these defects. Partial Discharge (PD) testing, especially via capacitor coupling, reliably detects latent defects in design and production, ensuring motor longevity and safety.

What you will learn:

• Latent insulation defects are critical: Small imperfections in stator and rotor windings can trigger partial discharges, leading to insulation failure and motor damage, especially in inverter-driven traction motors.
• Partial Discharge (PD) testing is essential: PD testing detects early-stage defects that standard SURGE and HI-POT tests may miss, ensuring safety margins during design and production.
• Capacitor coupling method excels: Compared to antenna or HFCT methods, it offers higher sensitivity, noise immunity, and easy calibration, making it ideal for both lab and production line testing.

Offered Free by: Marposs Corporation
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