A connection diagnostic apparatus for a ground fault detector including an oscillator connected via a coupling capacitor to an electric circuit with a first connection line and a second connection line, and a voltage detector for detecting a voltage value between the oscillator and the coupling capacitor is provided with a first relay and a second relay provided in the first connection line and the second connection line, and a programmable controller. The programmable controller determines a connected state of the ground fault detector based on a change amount of a voltage value detected by the voltage detector when the first relay is turned on or off and determines the connected state of the ground fault detector based on a change amount of a voltage value detected by the voltage detector when the second relay is turned on or off.
CONNECTION DIAGNOSTIC DEVICE FOR GROUND FAULT DETECTOR
ANSCHLUSSDIAGNOSEVORRICHTUNG FÜR EINEN ERDSCHLUSSWÄCHTER
DISPOSITIF DE DIAGNOSTIC DE CONNEXION POUR DÉTECTEUR DE DÉFAUT DE MISE À LA MASSE
08.08.2018
Patent
Elektronische Ressource
Englisch
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