Tradeoffs in Motor Branch Circuit Protection

Under the National Electrical Code, an engineer designing a motor branch circuit has the option of selecting motor short circuit protectors (MSCP's), one of two kinds of circuit breakers, or one of several classes of fuses for his short circuit protection means. In making his decision, he evalu...

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Bibliographic Details
Published inIEEE transactions on industry applications Vol. IA-12; no. 4; pp. 320 - 327
Main Author Paape, Kenneth L.
Format Journal Article
LanguageEnglish
Published IEEE 01.07.1976
Subjects
Chemical industry
Circuit breakers
Costs
Design engineering
Fault currents
Fuses
National electric code
Petroleum
Protection
Protective relaying
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Summary:Under the National Electrical Code, an engineer designing a motor branch circuit has the option of selecting motor short circuit protectors (MSCP's), one of two kinds of circuit breakers, or one of several classes of fuses for his short circuit protection means. In making his decision, he evaluates initial cost, convenience, degree of protection, replacement cost, etc. This paper outlines these tradeoffs in a concise manner so that an individual selecting short circuit protection for a motor branch circuit can be aware of them and select the protective device which optimizes the concerns he feels are most important.
ISSN:0093-9994
1939-9367
DOI:10.1109/TIA.1976.349432