公开(公告)号：US10332716B2

公开(公告)日：2019-06-25

申请号：US15405513

申请日：2017-01-13

Applicant: EATON CORPORATION

Inventor： Daniel A. Hosko ,  Theodore J. Miller ,  Zhi Gao ,  Randy P. Shvach

IPC: H02H3/33 ,  H01H71/74 ,  H02H1/00 ,  H02H3/02 ,  H02H1/06 ,  H02H3/05 ,  G05B15/02 ,  H02H3/00 ,  H02H3/16

Abstract: A circuit interrupter includes an electronic trip unit structured to receive power from a power supply. The electronic trip unit includes a start-up process and is structured to proceed through the start-up process when the electronic trip unit begins receiving power from the power supply and a timing circuit including a capacitor structured to begin charging when the electronic trip unit begins receiving power from the power supply. The electronic trip unit includes a processor that is structured to read a voltage across the capacitor when the start-up process has completed and to determine an elapsed time of the start-up process based on the read voltage across the capacitor.

公开(公告)号：US20190026749A1

公开(公告)日：2019-01-24

申请号：US15652540

申请日：2017-07-18

Applicant: EATON CORPORATION

Inventor： Zhi Gao ,  Theodore J. Miller ,  Timothy F. Thompson ,  Randy P. Shvach ,  Daniel A. Hosko

IPC: G06Q30/00 ,  G08B13/24 ,  G06K19/10 ,  G06K7/10

Abstract: A security tag and electronic system detect unauthorized tampering of Molded Case Circuit Breakers (MCCBs) and authenticate MCCBs against counterfeiting or gray market items. The system can involve digital generation of a public key and a corresponding private key, both keys comprise large positive integers, applying the private key to an MCCB-specific message string and creating a digital signature code, generating an identification code from the MCCB-specific message string and the digital signature code, building the identification code into one or more security tags, and installing the security tags on MCCBs, and authenticating MCCBs through a verification step and a certification step. The verification step reads the security tags, and verifies the identification code. The certification step checks the identification code against a revocation list that contains previously compromised identification codes.