LIGHTNING ARRESTER

PROBLEM TO BE SOLVED: To know that a surge current resulting from lightning has flowed by installing an alarm fuse in series connection to a circuit in which surge current flows, connecting a discharge element parallel with this serial circuitry, and thereby acknowledging breakdown of a lightning ar...

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Bibliographic Details
Main Author SATO OSATOSHI
Format Patent
LanguageEnglish
Published 19.09.1997
Edition6
Subjects
ALARM SYSTEMS
BASIC ELECTRIC ELEMENTS
CORONA DEVICES
ELECTRICITY
GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
ORDER TELEGRAPHS
OVERVOLTAGE ARRESTERS USING SPARK GAPS
PHYSICS
SIGNALLING
SIGNALLING OR CALLING SYSTEMS
SPARK GAPS
SPARKING PLUGS
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Summary:PROBLEM TO BE SOLVED: To know that a surge current resulting from lightning has flowed by installing an alarm fuse in series connection to a circuit in which surge current flows, connecting a discharge element parallel with this serial circuitry, and thereby acknowledging breakdown of a lightning arrester ocularly. SOLUTION: An alarm fuse F1 is installed in an inter-line breakdown protection circuit 10 to blow to break the circuit when a surge current exceeding a certain level flows for a specified period of time and is connected in series to a circuit in which the surge current flows through an internal discharge element Z4. Further, another discharge element Z5 and an alarm contact circuit 11 are connected parallel with the alarm fuse F1. When the alarm fuse F1 blows, a surge current flows first to the discharge element Z5, and to the alarm contact 11, so that it functions as a lightning arrester even after surge current has flowed. The occurrence of the fuse F1 having blown can be known from closing of the alarm contact circuit 11 and lighting-up of a lamp 31.
Bibliography:Application Number: JP19960052946