(under subclass 539) Subject matter for checking a defect in a nonconductive material which separate one conductor from another and causes an unintentional electrical path between two conductors.
SEE OR SEARCH THIS CLASS, SUBCLASS:
509+, where an insulation failure in a circuit causes an unintentional current leakage to ground.
544, for an insulation defect in a single conductor.
551+, for detecting the presence of a defect in a nonconductive material used in an electric circuit or component in general.
557+, for detecting defects in insulating material not used in an electric circuit or component.
SEE OR SEARCH CLASS 340, Communications: Electrical,
647, and 651 for testing the condition of insulation.
