What are the limitations of electrical signature analysis (ESA)?

ESA cannot detect:

• Temperature changes
• Moisture and other forms of contamination
• Lubrication conditions
• The condition of the insulation

Complex assets (grinders, crushers, assets with many rotational components), assets with high load variations, and/or assets with very low supply frequencies (e.g., <10 hz) require a more detailed discussion to understand if these pose limitations for ESA.

If you have specific questions regarding ESA’s limitations, please feel free to contact us here.