Filter the results

Enter one or more words to find resources containing any of the words entered
Enter words or phrases between " " to find exact match

Article includes ...

Type of resourceTechnical topicLanguageIndustry publicationPaid Product But Free For EASA MembersPublication date

Search Clear

Resource Library

Article

IEC to NEMA Motor Ratings

February 2025
Number of views: 128
Article rating: No rating

Tom Bishop, PE
EASA Senior Technical Support Specialist

Outside of North America, IEC motors are ubiquitous and if not repaired are typically replaced with IEC equipment in most applications. Comparatively, the IEC motor population in North America is continually increasing, and there are two frequent scenarios when replacing an IEC motor. The first is relatively straightforward: replacing the IEC motor with an equivalent IEC motor. The other scenario is to consider replacing the IEC design motor with a NEMA design motor.

The information in this article provides comparisons of key characteristics of IEC and NEMA motors to aid in evaluating the potential simplicity or complexity of the IEC to NEMA design conversion. Further, if desired, the information may be used to evaluate a potential NEMA to IEC motor conversion. For clarity and simplicity, all dimensions are given in millimeters. Except for the NEMA service factor (SF) and IEC duty types (S1 to S10), there are many more similarities than differences between the IEC and NEMA motor standards.

MEMBERS ONLY CONTENT - LOGIN REQUIRED

Related Reference and Training Materials

Categories: Technical topics, AC motors, Design/theory/application, Miscellaneous, Nameplates, Standards

Tags: Nameplate Motor nameplate Motor design IEC NEMA

Rate this article:

No rating

PREVIOUS ITEM

Comments are only visible to subscribers.

Getting The Most From Your Electric Motors

Getting The Most From Your Electric Motors - cover This 40-page booklet provides great advice for obtaining the longest, most efficient and cost-effective operation from general and definite purpose electric motors.

This booklet covers topics such as:

Installation, startup and baseline information
Operational monitoring and maintenance
Motor and baseline installation data
How to read a motor nameplate
Motor storage recommendations

LEARN MORE AND DOWNLOAD MÁS INFORMACIÓN Y DESCARGAR BUY PRINTED COPIES

EASA/AEMT Rewind Study

The Effect of Repair/Rewinding on Premium Efficiency/IE3 Motors
Tests prove Premium Efficiency/IE3 Motors can be rewound without degrading efficiency.

DOWNLOAD THE FULL RESULTS

ANSI/EASA AR100-2020

ANSI/EASA AR100-2015 cover

Recommended Practice for the Repair of Rotating Electrical Apparatus
This is a must-have guide to the repair of rotating electrical machines. Its purpose is to establish recommended practices in each step of the rotating electrical apparatus rewinding and rebuilding processes.

DOWNLOAD - ENGLISH

DESCARGAR - ESPAÑOL

EASA Technical Manual

EASA Technical Manual cover

Revised May 2024
The EASA Technical Manual is the association's definitive and most complete publication. It's available FREE to members in an online format. Members can also download PDFs of the entire manual or individual sections.

VIEW & DOWNLOAD