| Titre : | A comparison of thermoset and thermoplastic arc chutes in molded-case circuit breakers under fault clearing (2015) |
| Auteurs : | Beema Thangarajan, R., Auteur ; Chetwani, S., Auteur ; Shrinet, V., Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | IEEE electrical insulation magazine (Vol. 31 N° 2, Mars-Avril 2015) |
| Article en page(s) : | pp. 30-35 |
| Note générale : | Electrical insulation |
| Langues : | Français |
| Tags : | 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%28p_IS_Number%3A7048127%29 |
