A comparison of thermoset and thermoplastic arc chutes in molded-case circuit breakers under fault clearing / Beema Thangarajan, R. in IEEE electrical insulation magazine, Vol. 31 N° 2 (Mars-Avril 2015)  

Public ISBD [article]  inIEEE electrical insulation magazine > Vol. 31 N° 2 (Mars-Avril 2015) . - pp. 30-35 Titre : A comparison of thermoset and thermoplastic arc chutes in molded-case circuit breakers under fault clearing Type de document : texte imprimé Auteurs : Beema Thangarajan, R., Auteur ; Chetwani, S., Auteur ; Shrinet, V., Auteur Année de publication : 2015 Article en page(s) : pp. 30-35 Note générale : Electrical insulation Langues : Français (fre) Mots-clés : Circuit breakers Circuit-breaking arcs Electrical contacts Plectromagnetic actuators Power distribution faults protection Thermal insulating materials Résumé : Molded-case circuit breakers (MCCB) are vital devices that are used in many distribution systems for protection from faults in the network. During a fault, a large increase in current passes through the terminals of the MCCB and the contacts open by electromagnetic actuation. On opening, a low-voltage arc is struck between the contacts, forming a high-temperature plasma of thousands of degrees Celsius. The plasma causes thermal degradation of the insulating materials and erosion of the contacts and is a source of intense UV, which may further cause degradation of the insulating materials. In the case of a polyester based MCCB, electrically conductive soot is produced, which is detrimental to the long-term performance of the device. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7048135&filter%3DAND% [...] [article] A comparison of thermoset and thermoplastic arc chutes in molded-case circuit breakers under fault clearing [texte imprimé] / Beema Thangarajan, R., Auteur ; Chetwani, S., Auteur ; Shrinet, V., Auteur . - 2015 . - pp. 30-35. Electrical insulation Langues : Français (fre) in IEEE electrical insulation magazine > Vol. 31 N° 2 (Mars-Avril 2015) . - pp. 30-35 Mots-clés : Circuit breakers Circuit-breaking arcs Electrical contacts Plectromagnetic actuators Power distribution faults protection Thermal insulating materials Résumé : Molded-case circuit breakers (MCCB) are vital devices that are used in many distribution systems for protection from faults in the network. During a fault, a large increase in current passes through the terminals of the MCCB and the contacts open by electromagnetic actuation. On opening, a low-voltage arc is struck between the contacts, forming a high-temperature plasma of thousands of degrees Celsius. The plasma causes thermal degradation of the insulating materials and erosion of the contacts and is a source of intense UV, which may further cause degradation of the insulating materials. In the case of a polyester based MCCB, electrically conductive soot is produced, which is detrimental to the long-term performance of the device. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7048135&filter%3DAND% [...]

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