Electric Motor Testing



For the month of March we will be focusing on the machine train analysis tools of the EMAX Current Demodulation technology starting with gears. Reduction gears play a key role in industry to control shaft rotation speeds of various applications. Knowing a little bit about the gear application being tested you can rely on the EMAX Current Demodulation test to accurately trend changes in the condition of the gears. The current being measured is feeding the stator windings. However, changes in torque due to load or fault anomalies will transfer through the gear box to the motor rotor, into the air gap between the rotor and stator, finally impacting the stator current. Gear box related anomalies will result in elevated peaks correlating to the reduced output shaft speed of the gear box. It is important to establish proper baseline amplitudes and build band alarms around these known frequencies on the current demodulation spectrum.


To see a case study using EMAX Current Demodulation to identify gear related anomalies visit our YouTube channel at:



Ademinsa Centroamericana, S.A.

Calle 11, casa # 65-11, corregimiento Juan Díaz

Ciudad de Panamá, Panamá

Ademinsa Venezolana, C.A.

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Zona Industrial Sur, Valencia, Edo. Carabobo

Ensayos No Destructivos Emergentes e Ingeniería

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Antofagasta, Chile


Ademinsa Centroamericana, S.A.

Ciudad Radial, Panamá

Teléfono: (507)  396-1512

Correo: infopanama@ademinsa.com


Ademinsa Venezolana, C.A.

Valencia, Edo. Carabobo

Teléfonos: (58) 241 514-7968 / 412 483-2562

Correo: rflete@ademinsa.com



Lunes a Viernes 08:00 am - 05:00 pm

Ensayos No Destructivos Emergentes e Ingeniería

Antofagasta, Chile

Teléfono: (56) 55 293-5005

Correo: ctorres@ademinchile.com


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