Overload for ASD Applications-how much is required?

Author

Griggs, Miles ; Hartzo, Gregory D.

Author_Institution

Siemens Energy & Autom. Inc., Alpharetta, GA

Volume

42

Issue

4

fYear

2006

Firstpage

890

Lastpage

899

Abstract

This paper lists various factors that define the continuous rating of an adjustable-speed drive (ASD). Operating scenarios are discussed that lead to requirements for temporary overload capability. Specification of ASD overloads is addressed along with methods that can be employed to avoid overloads. Common industrial machines are categorized according to their overload requirements, and application exception examples are provided. General requirements for ASD overload capability, as defined in National Electrical Manufacturers Association (NEMA) and International Electrotechnical Commission (IEC) standards, are reviewed and compared, and recommendations are given for additional user specifications that are appropriate for ac-motordrive applications

Keywords

AC motor drives; variable speed drives; IEC; International Electrotechnical Commission standards; National Electrical Manufacturers Association; ac motor drive; adjustable speed drive; industrial machines; overload; Chemical industry; Costs; Frequency; IEC standards; Manufacturing; Petroleum; Shafts; Torque; Variable speed drives; Voltage; AC motor drive; adjustable-speed drive (ASD); breakaway torque; constant torque; inertia; overload capability; thermal capacity; variable torque;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/TIA.2006.876084

Filename

1658317