Electrical Signature Analysis in Practice
About These Articles
ESA principles, applications and the interpretation of measured electrical signatures.
Most articles below are in Japanese. Japanese-language articles link directly to their Japanese pages.
The Air Gap: Where Electrical and Mechanical Energy Meet (Japanese)
How electromagnetic interaction across the air gap transfers energy between the stator and rotor.
Condition Diagnostic Technology: Its Development in Kitakyushu and Yawata (Japanese)
A look at the development of condition diagnostic technology in Japan through the work of Toshio Toyota in Kitakyushu and Yawata.
Electrical Signature Analysis: Origins and Related Techniques
The origins of ESA and its relationship to current, voltage and power quality analysis. Read in English.
Why Vibration Specialists Should Consider ESA (Japanese)
How experience in vibration diagnostics can provide a foundation for understanding and applying ESA.
The Physical Basis of ESA and Its Differences from Vibration Diagnostics (Japanese)
A comparison of the physical principles and diagnostic information underlying vibration analysis and ESA.
Vibration Diagnostics and ESA: Mechanical and Electrical Analogies (Japanese)
How mechanical and electrical analogies help explain the complementary roles of vibration diagnostics and ESA.
Equipment Deterioration and Energy Loss: The ESA Perspective (Japanese)
Equipment deterioration can increase energy consumption as well as the risk of shutdown. This article considers that relationship.
Wind Turbine Diagnostics and Condition Monitoring with ESA (Japanese)
An introduction to wind power diagnostic services provided in cooperation with our sales partner, WEST JEC.
ESA: Application Scope and Diagnostic Value (Japanese)
The range of equipment that can be assessed using ESA, including three-phase AC motors and generators.
The Motor as a Sensor: Principles of Electrical Signature Analysis (Japanese)
How motor air-gap interactions, amplitude modulation and FFT analysis help reveal changes in equipment condition.