FM College ~ News & Articles

Record and Verify Motor Data

Jan 11, 2023 | Public | 0 comments

An essential step to ensuring a quality installation and reliable operation of a repaired or replacement motor is recording and verifying the motor data.

Use a motor data sheet to record the nameplate data and pertinent electrical and mechanical parameters at the time of installation and startup. These baseline values will be invaluable for determining the application’s life-cycle cost and recognizing any changes in operating characteristics. 

Here are eight steps you can take to document this data.

• Confirm that the motor is appropriate for the application by verifying that its mechanical and electrical characteristics are suitable for the intended application.

• For an adjustable-speed drive (ASD) or variable-frequency drive (VFD) application, use an “inverter-duty” motor (or provide suitable filtering) and keep the supply-cable length within the motor manufacturer’s guidelines. Use supply conductors designed for ASD circuits to reduce the risk of over voltages and transient voltages at the motor terminals, and a shaft grounding system or insulated bearings to prevent damage from stray shaft currents.

• Record the nameplate data. Serial numbers are usually coded to indicate the month and year of manufacture. For extra assurance, attach a digital photo of the nameplate for reference in case of errors in the recorded data.

• Make sure the motor’s bearings are suitable for the driven load, e.g., a drive end roller bearing for high- radial load-belted application.

• Review the manufacturer’s lubrication specifications and ensure the lubrication points are accessible.

• Using a digital low-resistance ohmmeter, record the temperature-corrected insulation resistance of the motor and the line-to-line resistance of the winding.

• Verify that the motor control and overload protection are sized properly for the motor rating.

• Inspect and test motors taken from storage to ensure they haven’t degraded. EP

Content adapted from EASA’s, St. Louis (, Getting the Most from Your Electric Motors. Access the full publication at

The post Record and Verify Motor Data appeared first on Efficient Plant.

The post "Record and Verify Motor Data" appeared first on Efficient Plant


Submit a Comment

3 considerations for designing healthy, adaptable student dining

Every student life project possesses its own unique reflection of the campus in which it resides. Student dining facilities...

Downtown Edmonton plaza opens to public

Centennial Plaza in downtown Edmonton is now open, offering an attractive, family-friendly and accessible space. Located in...

40+ courses on renewable energy transitions, technology and financing

Editor’s note: This is part of a series on closing the sustainability skills gap with the resources available right now....

Making the Case for Infrared Heating Solutions in Warehouses

Although the summer might seem like an odd time to be thinking about heating, it could be the perfect opportunity to get...

Geisinger Medical Center Expansion Project Announced

The $880 million project is slated to be complete and open in 2028. Geisinger officials announced major plans to make...