Circuit breaker type disconnector for overvoltage protector

A disconnector for an overvoltage protector is equipment that disconnects a circuit when the overvoltage protector may fail in a short circuit mode. The disconnector and the overvoltage protector are connected in series. A fuse or a circuit breaker is normally used as a disconnector. However there a...

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Bibliographic Details
Published in2010 30th International Conference on Lightning Protection (ICLP) pp. 1 - 6
Main Authors Kijima, Hitoshi, Shibayama, Masao
Format Conference Proceeding
LanguageEnglish
Published University of Cagliari 01.09.2010
Subjects
Circuit breakers
Copper
Earth
Fuses
Surges
Switches
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DOI10.1109/ICLP.2010.7845829

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Summary:A disconnector for an overvoltage protector is equipment that disconnects a circuit when the overvoltage protector may fail in a short circuit mode. The disconnector and the overvoltage protector are connected in series. A fuse or a circuit breaker is normally used as a disconnector. However there are problems with both methods. A fuse is not recyclable once it goes out. Even a circuit breaker is resettable, a lightning surge current causes a switchgear of circuit breaker to open unnecessary. This malfunction spoils the overvoltage protective function which eliminates a lightning surge current into an instrument. If the problem which a switchgear of circuit breaker comes floating can be solved, even when a lightning surge current flows through it, an instrument can be protected by the overvoltage protector. This paper presents several approaches preventing circuit breaker type disconnectors from the malfunction.
DOI:10.1109/ICLP.2010.7845829