A TEST ASSISTANT DEVICE SET OF DIGITAL OVER CURRENT RELAY USING LIGHT SENSOR

摘要

PURPOSE: An auxiliary device set for testing a digital over current relay is provided to offer convenience to a tester by connecting a tester and a normal computer. CONSTITUTION: A socket(14) for terminal connection is coupled with a plurality of terminals which are placed in the back side of the protecting relay of a drawer type. An optical detecting sensor is arranged in the front side of an LED and detects LED light. A test controller(11) arranges a switch for selecting a contact point which is necessary for phase conversion and a test item. The switch is fixed and coupled with the other one side of a signal line cable(16). The signal line cable connects the socket fixed and coupled with a relay, a test controller, and a tester. A computer(20) is connected to the tester and a communications cable and loads a test program.