Testing and applying instantaneous trip circuit breakers in combination motor starters

Author

Padden, Lorraine K. ; Gregory, George D.

Author_Institution

Padden Eng., Katy, TX, USA

fYear

1998

fDate

28-30 Sep 1998

Firstpage

41

Lastpage

49

Abstract

Instantaneous trip molded-case circuit breakers have been widely used in petrochemical facilities for low-voltage motor protection. If not properly applied, false tripping on motor starting and contact welding of contactors may occur. Moreover, changes in the National Electrical Code have impacted equipment selection and protection. This paper discusses the testing, operation, and application of instantaneous trip molded-case circuit breakers used in combination motor starters

Keywords

chemical industry; circuit breakers; electric motors; petroleum industry; starting; switchgear testing; National Electrical Code; combination motor starters; contact welding; equipment protection; equipment selection; false tripping; instantaneous trip circuit breakers testing; low-voltage motor protection; molded-case circuit breakers; motor starting; petrochemical facilities; Circuit breakers; Circuit testing; Contactors; Induction motors; Low voltage; National electric code; Petrochemicals; Protection; Protective relaying; Welding;

fLanguage

English

Publisher

ieee

Conference_Titel

Petroleum and Chemical Industry conference, 1998. Industry Applications Society 45th Annual

Conference_Location

Indianapolis, IN

ISSN

0090-3507

Print_ISBN

0-7803-4897-4

Type

conf

DOI

10.1109/PCICON.1998.727902

Filename

727902