METHOD AND DEVICE FOR JUDGING REPLACEMENT TIME OF SURGE PROTECTION APPARATUS, AND SURGE PROTECTION APPARATUS

PROBLEM TO BE SOLVED: To provide a method for judging a replacement time of a surge protection apparatus judging a replacement time of a surge protection apparatus surely by a simple constitution. SOLUTION: In judging the replacement time of a surge protection apparatus suppressing a surge, a surge...

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Bibliographische Detailangaben
Hauptverfasser:	HIMURO YOSHITAKA, KAWABATA OSAMU
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS BOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLYOR DISTRIBUTION OF ELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER CORONA DEVICES ELECTRICITY GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES GENERATION MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES OVERVOLTAGE ARRESTERS USING SPARK GAPS PHYSICS SPARK GAPS SPARKING PLUGS TESTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for judging a replacement time of a surge protection apparatus judging a replacement time of a surge protection apparatus surely by a simple constitution. SOLUTION: In judging the replacement time of a surge protection apparatus suppressing a surge, a surge current flowing in the surge protection apparatus is judged by using a surge judging parameter Ps and a surge judging parameter threshold Psc (step S102). Then, the number of times the surge current flows in the surge protection apparatus is counted (step S103). Subsequently, the number of times the surge current has flowed, namely a surge occurrence number N, and a replacement time judging threshold Nc are compared (step S104). As a result, when N is greater than Nc (step S104: Yes), it is judged that the surge protection apparatus is in a replacement time (step S105). COPYRIGHT: (C)2009,JPO&INPIT