ELECTRICAL LEAKAGE FIRE ALARM EQUIPPED WITH TRACKING SHORT-CIRCUIT DETECTING FUNCTION

摘要

PROBLEM TO BE SOLVED: To provide an electrical leakage fire alarm which is economical in terms of costs or space for issuing the alarm of the generation of tracking short-circuit without making it necessary to set it for each socket by installing a means for detecting tracking short-circuit in the electrical leakage fire alarm.;SOLUTION: This electrical leakage fire alarm is provided with a means for issuing alarm when the detected currents of the leakage currents detecting means of an electrical path exceed a predetermined threshold and a means for issuing alarm when the detected output of the tracking short-circuit detecting means of the electrical path exceeds the predetermined value.;COPYRIGHT: (C)2005,JPO&NCIPI