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An ISO 9001, 14001 & 45001 Company

An ISO 9001, 14001 & 45001 Company

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Electrical Signature Analysis

Electrical Signature Analysis (also known as ESA or MCSA) is the standard technology for online detection of broken rotor bars, air-gap eccentricity, interturn shorts and mechanical defects in motors by analyzing the current and voltage spectrum. ESA analyzers also provide the capabilities to perform harmonic analysis, estimate motor efficiency and identify load related defects. We offer handheld, portable and continuous monitoring instruments for this application.


The EMPATHTM is the original Electrical Signature Analyzer, developed in the 1980s based on the work of Oak Ridge National Labs. Designed & manufactured in USA, this 8-channel analyzer has advanced features such as automated analysis for the motor & the driven load, automatic determination of stator slots & rotor bars, customizable configurations, 1-click report generation, torque analysis, power spectrum analysis, transient analysis, etc. Framatome is a leading global manufacturerof nuclear plants, and relies on the EMPATH to ensure the reliability of it’s safety-related electric motors.


The AT-POL IIITM is an 8-channel handheld Electrical Signature Analyzer that also includes full power analyzer capability. It’s very small size,integrated screen and keypadeliminate the need for any computer control, making it very convenient for field use. The CAT IV rating, CE certification and Bluetooth operation make it the safest instrument available for energized testing, while the rugged design allows a standard 2-year warranty.


The EMPATH CMSTM is the continuous monitoring version of the portable EMPATH analyzer. It can monitor upto 32 motors with a single unit, and as many as 3,200 motors can be multiplexed with a single server. Data is acquired from E-Plug modules permanently installed in Motor Control Centres (MCCs), with no operator required. ECMSTM automatically pulses the motors at user-defined intervals, collects and analyzes the data, and then stores it in various locations including cloud servers. In cases where the results are out of tolerance, ECMS sends various flags including SMMs, emails and on-screen indications.