Testing and applying instantaneous trip circuit breakers in combination motor starters

Testing and applying instantaneous trip circuit breakers in combination motor starters

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 e...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Padden, L.K., Gregory, G.D.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Circuit breakers
Circuit testing
Contactors
Induction motors
Low voltage
National electric code
Petrochemicals
Protection
Protective relaying
Welding
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Beschreibung
Zusammenfassung: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.
ISSN:0090-3507
2161-8127
DOI:10.1109/PCICON.1998.727902