PROTECTION DEVICE AND OPERATING VERIFICATION METOHD THEREOF

摘要

A method for verifying an operation of a protection device according to an embodiment of the invention comprises: setting a plurality of relay elements for sensing an abnormal state of the protection device; receiving an input related to test information for testing each of the set relay elements; and, when it is determined that there is a relay element with an abnormal state among the relay elements according to a reception of the input related to the test information, acknowledging whether the protection device has generated an abnormal state detection signal.