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영어

By 2012, There are many studies on the risk of ignite the bimetallic thermostat(phenol resin moulding), the automatic temperature regulating apparatus for cold and warmth temperature water purifier. But, Detailed studies on the risk of firing the ceramic thermostat that is manufactured by revising the technical standards order No. 2012-0339 safty standard in August 2012 is insufficient. Accordingly, through experiment, we were checked that ceramic bimetal thermostat is perfectly safe from Tracking and determined the extent of Tracking by measuring the current flow of salt water. Meanwhile, we studied the thermostat inside the burned water purifier to determine whether it was self fired by Tracking or ignited by external flame.