PROTECTION OF A SURGE ARRESTER WITH A BETTER PROTECTION AGAINST FAILURE FROM THERMAL OVERLOAD IN CASE OF A TEMPORARY OVERVOLTAGE IN AN ELECTRICAL GRID LINE

This invention concerns a temporary overvoltage protection assembly (11) for protecting an electrical grid line (139) against temporary overvoltages, comprising a disconnector device (10, 100) and a surge arrester (140), wherein the surge arrester (140) comprises a second terminal (142), the disconn...

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Bibliographische Detailangaben
Hauptverfasser: Mugwyler, Remo, Antelo, Joel, Gariboldi, Nicola, Boese, Ronald
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:This invention concerns a temporary overvoltage protection assembly (11) for protecting an electrical grid line (139) against temporary overvoltages, comprising a disconnector device (10, 100) and a surge arrester (140), wherein the surge arrester (140) comprises a second terminal (142), the disconnector device (10, 100) comprises a disconnector cartridge (26) comprising a first terminal (30) electrically connected to the second terminal (142), and a temporary overvoltage threshold of the disconnector cartridge (26) is chosen with respect to the surge arrester (140) such that the disconnector device (10, 100) operates before the surge arrester (140) reaches a thermal overload.