Invention Grant
- Patent Title: Output contact failure monitor for protection relays in electric power systems
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Application No.: US17316939Application Date: 2021-05-11
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Publication No.: US11749984B2Publication Date: 2023-09-05
- Inventor: Evan J. Penberthy , Brian James Peterson
- Applicant: Schweitzer Engineering Laboratories, Inc.
- Applicant Address: US WA Pullman
- Assignee: Schweitzer Engineering Laboratories, Inc.
- Current Assignee: Schweitzer Engineering Laboratories, Inc.
- Current Assignee Address: US WA Pullman
- Agency: PCFB, LLC
- Agent Gregory C. Baker; Terry S. Jones
- Main IPC: H02H3/00
- IPC: H02H3/00 ; H02H7/22 ; H02H1/00

Abstract:
Output circuit devices for use in electric power systems may include a first output subsystem for transmitting a first signal output via an output port to a component of the electric power system, an input subsystem for receiving and monitoring the first signal output transmitted by the first output subsystem, and a second output subsystem for transmitting another signal output to the component of the electric power system. The second output subsystem is to transmit the signal output in response to an indication from the input subsystem. Intelligent electronic devices (IEDs) and associated methods may include one or more output circuit devices.
Public/Granted literature
- US20220368125A1 OUTPUT CONTACT FAILURE MONITOR FOR PROTECTION RELAYS IN ELECTRIC POWER SYSTEMS Public/Granted day:2022-11-17
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