More and more frequency-controlled drives are being used in modern production facilities. What many people don't know is that the pulse width modulation (PWM) of the converters generates high-frequency common-mode voltages that can lead to dangerous bearing currents.
The consequences are costly: ripple formation on the raceways, electrical erosion of the bearing surfaces, premature wear with unplanned failures and downtime in critical production processes.
The key lies in early detection. Modern analysis systems such as the LTTsmart Power-Analyzer make it possible to identify bearing currents as they arise:
✓ High-resolution detection of common-mode voltages
✓ Real-time monitoring of critical parameters
✓ Precise spectral analysis for cause identification
✓ Documentation for predictive maintenance
Companies with the following characteristics are particularly affected:
- Large pump and fan systems
- CNC machining centers
- Conveyor technology and logistics systems
- Wind turbines
- Electric vehicle drives
Tip: A one-time investment in the right measurement technology can prevent years of follow-up costs due to bearing damage.
Learn more about the LTTsmart Power-Analyzer here: