NEMA standard helps with motor, generator selection

Motor and generator performance, safety, testing, construction, and manufacturing of ac motors, dc motors, and generators are covered in ANSI/NEMA MG 1-2011.


Control Engineering - machine and motion control - motor-drive iconPractical information on ac motors, dc motors, and generators, about performance, safety, testing, construction, and manufacturing is available in ANSI/NEMA MG 1-2011. The standards document is designed to assist users in the proper selection and application of motors and generators, according to the National Electrical Manufacturers Association (NEMA).

The NEMA Motor and Generator Section said it developed the document, published earlier this year, based on sound engineering principles, research, and records of test and field experience, along with information from manufacturers, users, inspection authorities, and others having specialized experience. Although some definite-purpose motors and generators are included, NEMA said, the standards do not apply to machines such as generators and traction motors for railroads, motors for mining locomotives, arc-welding generators, automotive accessory and toy motors and generators, and machines mounted on airborne craft.

In the revision, work of other organizations whose standards are related to motors and generators was considered. Revision 1-2011 revises and supersedes the NEMA Standards Publication No. MG 1-2010.

NEMA committees revise standards periodically to accommodate changes in user needs, advances in technology, and changing economic trends. The section accepts input from those with experience in the selection, use, or manufacture of electric motors and generators, to the attention of the Motor and Generator Section via Vice President, Technical Services, National Electrical Manufacturers Association, 1300 North 17th Street, Suite 1752, Rosslyn, VA 22209.

Related standards and documents include:

- Energy Management Guide for Selection and Use of Fixed Frequency Medium AC Squirrel-Cage Polyphase Induction Motors

- Energy Management Guide for Selection and Use of Single-Phase Motors

- Safety Standard for Construction and Guide for Selection, Installation and Use of Electric Motors and Generators

- Sound Level Prediction for Installed Rotating Electrical Machines.

- Edited by Mark T. Hoske, content manager, CFE Media, Control Engineering, Plant Engineering, and Consulting-Specifying Engineer,

No comments
The Top Plant program honors outstanding manufacturing facilities in North America. View the 2013 Top Plant.
The Product of the Year program recognizes products newly released in the manufacturing industries.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
A cool solution: Collaboration, chemistry leads to foundry coat product development; See the 2015 Product of the Year Finalists
Raising the standard: What's new with NFPA 70E; A global view of manufacturing; Maintenance data; Fit bearings properly
Sister act: Building on their father's legacy, a new generation moves Bales Metal Surface Solutions forward; Meet the 2015 Engineering Leaders Under 40
Cyber security cost-efficient for industrial control systems; Extracting full value from operational data; Managing cyber security risks
Drilling for Big Data: Managing the flow of information; Big data drilldown series: Challenge and opportunity; OT to IT: Creating a circle of improvement; Industry loses best workers, again
Pipeline vulnerabilities? Securing hydrocarbon transit; Predictive analytics hit the mainstream; Dirty pipelines decrease flow, production—pig your line; Ensuring pipeline physical and cyber security
Upgrading secondary control systems; Keeping enclosures conditioned; Diagnostics increase equipment uptime; Mechatronics simplifies machine design
Designing positive-energy buildings; Ensuring power quality; Complying with NFPA 110; Minimizing arc flash hazards
Building high availability into industrial computers; Of key metrics and myth busting; The truth about five common VFD myths

Annual Salary Survey

After almost a decade of uncertainty, the confidence of plant floor managers is soaring. Even with a number of challenges and while implementing new technologies, there is a renewed sense of optimism among plant managers about their business and their future.

The respondents to the 2014 Plant Engineering Salary Survey come from throughout the U.S. and serve a variety of industries, but they are uniform in their optimism about manufacturing. This year’s survey found 79% consider manufacturing a secure career. That’s up from 75% in 2013 and significantly higher than the 63% figure when Plant Engineering first started asking that question a decade ago.

Read more: 2014 Salary Survey: Confidence rises amid the challenges

Maintenance and reliability tips and best practices from the maintenance and reliability coaches at Allied Reliability Group.
The One Voice for Manufacturing blog reports on federal public policy issues impacting the manufacturing sector. One Voice is a joint effort by the National Tooling and Machining...
The Society for Maintenance and Reliability Professionals an organization devoted...
Join this ongoing discussion of machine guarding topics, including solutions assessments, regulatory compliance, gap analysis...
IMS Research, recently acquired by IHS Inc., is a leading independent supplier of market research and consultancy to the global electronics industry.
Maintenance is not optional in manufacturing. It’s a profit center, driving productivity and uptime while reducing overall repair costs.
The Lachance on CMMS blog is about current maintenance topics. Blogger Paul Lachance is president and chief technology officer for Smartware Group.