Identifying root causes of failures in small electric motors

Author

Purushothaman, S.

Author_Institution

FM Global Res., Norwood, MA, USA

fYear

2014

fDate

27-31 July 2014

Firstpage

1

Lastpage

5

Abstract

Accurate identification of root causes helps not only to prevent reoccurring failures but also the efficacy of the insurance claims settling process. Hence FM Global Research has undertaken a study to identify root causes of failures in small electric motors. The study involves a detailed literature review and the development of the Lightning-induced overvoltages (LIOV) matrix. This matrix was developed to evaluate the damage potential of individual indirect strikes by accounting for strike current magnitude and strike distance. This paper provides guidance to aid in identifying the root causes of motor failure under the categories: 1. Electrical insulation aging, 2. LIOV´s, or 3. Artificial surges.

Keywords

electric motors; failure analysis; insulation; lightning; FM Global Research; LIOV matrix; artificial surges; electrical insulation aging; failures root causes identification; lightning-induced overvoltages matrix; motor failure; small electric motors; strike current magnitude; strike distance; Aging; Induction motors; Insulation; Lightning; Load modeling; Surge protection; Surges; Electric motors; indirect strikes; lightning; root cause analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

PES General Meeting | Conference & Exposition, 2014 IEEE

Conference_Location

National Harbor, MD

Type

conf

DOI

10.1109/PESGM.2014.6938804

Filename

6938804