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Research on MCCB Terminal Heating and on-line Monitor System of Terminal Temperature Rise

Author: ChenYiMin
Tutor: ZhangXiaoQing
School: Beijing Jiaotong University
Course: Electrical Engineering
Keywords: Low-voltage circuit breaker Terminal Blocks Temperature rise Online monitoring Power Line Carrier
CLC: TM561
Type: Master's thesis
Year: 2009
Downloads: 157
Quote: 0
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Abstract


The low-voltage circuit breaker is the most common electrical equipment in the field of low voltage power distribution . The various parameters of the low-voltage circuit breaker online monitoring and remote control of the future direction of the development of the low-voltage circuit breaker . , The temperature rise of the terminals is an important indicator in the various parameters of the low voltage circuit breaker . Terminal blocks bear breaker body with wires connected parts , abnormal temperature rise will not only caused by the mechanical connection of the equipment hidden , and the low-voltage distribution network incidents , but also the formation of the electrical fire hazards . With the miniaturization of the shape of the low-voltage circuit breakers , the size of its unit fever greatly increased. Component temperature rise of terminals become issues that affect low-voltage circuit breaker reliability can not be ignored . This paper around the terminals temperature rise of low-voltage circuit breakers work . Analysis of the low-voltage circuit breaker line monitoring technology and terminal temperature rise of the status quo . LonWorks power line carrier technology - based and designed to develop a low-voltage circuit breakers for low-voltage power line carrier communication terminals online monitoring data collection and communication module , the design points . The host computer monitoring program written in Visual Basic Software and Access software . Of the design of hardware and software online monitoring of the temperature of the low-voltage circuit breaker terminals test platform . This paper analyzes the characteristics of the temperature rise of the low-voltage circuit breaker terminals , thermal network model of the temperature rise of terminals . Influencing factors of the temperature rise of the terminals test data analysis , and the use of the method of least squares fit to the temperature curve , 100A low voltage circuit breaker terminals thermal time constant is obtained , discussed the rapid projected low voltage breaker terminal stable temperature rise of the solution .

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CLC: > Industrial Technology > Electrotechnical > Electrical > Electrical switches,circuit breakers > Breaker
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