公开(公告)号：US20200373753A1

公开(公告)日：2020-11-26

申请号：US16419405

申请日：2019-05-22

Applicant: Eaton Intelligent Power Limited

Inventor： Zhi GAO ,  Daniel A. Hosko ,  Randy P. Shvach ,  James Leo Lagree ,  Paul Richard Rakus ,  Ronald Dale Hartzel

IPC: H02H7/26 ,  H02H1/00

Abstract: Various embodiments of the present invention are directed to a first trip unit that is configured to be coupled to a power distribution system arranged in a Zone Selective Interlocking (ZSI) arrangement. The first trip unit includes an Input/Output circuit including a ZSI input terminal and a ZSI output terminal, a heartbeat signaling module configured to transmit a second signal to a second trip unit in a lower-level zone than the first trip unit, responsive to the normal condition, a first monitoring module configured to monitor a first signal received by the first trip from a third trip unit in a higher-level zone, responsive to the normal condition, and a second monitoring module configured to detect the fault condition. Related systems, devices, and methods are also described.

公开(公告)号：US10998716B2

公开(公告)日：2021-05-04

申请号：US16419405

申请日：2019-05-22

Applicant: Eaton Intelligent Power Limited

Inventor： Zhi Gao ,  Daniel A. Hosko ,  Randy P. Shvach ,  James Leo Lagree ,  Paul Richard Rakus ,  Ronald Dale Hartzel

IPC: H02H7/26 ,  H02H1/00 ,  G01R31/08

Abstract: Various embodiments of the present invention are directed to a first trip unit that is configured to be coupled to a power distribution system arranged in a Zone Selective Interlocking (ZSI) arrangement. The first trip unit includes an Input/Output circuit including a ZSI input terminal and a ZSI output terminal, a heartbeat signaling module configured to transmit a second signal to a second trip unit in a lower-level zone than the first trip unit, responsive to the normal condition, a first monitoring module configured to monitor a first signal received by the first trip from a third trip unit in a higher-level zone, responsive to the normal condition, and a second monitoring module configured to detect the fault condition. Related systems, devices, and methods are also described.