Circuit Breakers’ Structures and Over Current Characteristics
نویسندگان
چکیده
منابع مشابه
Overview of Current Research into Low-Voltage Circuit Breakers
The low-voltage circuit breaker has been used for many years for network and persons protection. The review papers existing on these devices generally deal with electrical aspects or macroscopic information on the arc but few concern the “fine” understanding of arc behaviour from its ignition between the opening contact to the current limitation stage due to its presence in the splitter plates....
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Specific and sensitive operation of circuit breakers makes an individual position for them in power networks. Circuit breakers are at the central gravity of variations and execution operations. Therefore, an optimum operation is the main reason to investigate about new gases to be used in MV and HV circuit breakers instead of SF6. The arc process has enormous complexity because of hydrodynamic ...
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The use of MEMS electrical switches as miniature electrically resettable circuit breakers is described. A prototype based on nickel thermal actuators on silicon has been fabricated and tested, and the performance is compared to analytical models. Trip currents of ≈ 300 mA are obtained, with trip times less than 50 ms. Temperature dependence of trip current is shown to be below 0.2%/K. The rel...
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................................................................................................................................................ iii Acknowledgements.................................................................................................................................v Table of
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Voltage Source Converter-High Voltage Direct Current (VSC-HVDC) is the most efficient and reliable method for electrical power transmission over long distances. The greatest challenge with VSC-HVDC system is that short-circuit faults damages the converter valves and the transmission network. The fault clearing time for the available DC breakers are not fast enough and reliable to provide adequa...
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ژورنال
عنوان ژورنال: Marine Engineering
سال: 2017
ISSN: 1346-1427,1884-3778
DOI: 10.5988/jime.52.59