Shaft Voltage Testing
Measuring Shaft Voltages
At LER Ltd, we offer specialised Spark Erosion testing services to ensure the highest precision and quality for your components. Our experienced team uses state-of-the-art equipment to deliver exceptional results, meeting the stringent demands of various industries.
Shaft Voltage Test Report:
Measuring the shaft voltage on VFD driven motors provides the user with valuable information to determine if there is a potential risk of bearing damage from electrical bearing discharges. Surveying and documenting shaft voltage readings and waveforms will assist in determining the appropriate mitigation or solution.
Note: The best time for shaft voltage measurements is during initial start-up in new or repaired motors operated by the VFD. Shaft voltage measurements should be incorporated into preventive and predictive maintenance programs and may be combined with vibration analysis, thermography or other services.
Typical bearing damage caused by shaft voltages.
Benefits of Shaft voltage testing
- Prevention of Bearing Damage: Shaft voltage testing helps identify high-frequency electrical currents that can cause damage to motor bearings, allowing for proactive measures to be taken before significant wear occurs.
- Early Detection of Issues: By measuring shaft voltage, potential problems can be detected early, reducing the risk of unexpected downtime and costly repairs associated with bearing failure.
- Improved Motor Lifespan: Regular testing and monitoring can extend the lifespan of electric motors by ensuring that damaging currents are managed effectively.
- Enhanced Operational Efficiency: Understanding shaft voltage levels allows for adjustments in system parameters or configurations, leading to improved overall efficiency in motor operations.
- Data-Driven Maintenance Decisions: The ability to record and analyze shaft voltage data enables maintenance teams to make informed decisions regarding maintenance schedules and interventions.
- Mitigation Strategies Development: Testing results can guide the implementation of mitigation strategies such as grounding devices or changes in lubrication practices to reduce harmful currents.
- Compliance and Safety Assurance: Regular testing ensures compliance with industry standards and enhances safety by preventing electrical hazards associated with bearing failures.
Shaft voltage testing:
Before an AEGIS SG Ring is fitted.
After an AEGIS SG Ring is fitted.
