Invention Grant
- Patent Title: Ground fault protection circuit and techniques
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Application No.: US16876705Application Date: 2020-05-18
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Publication No.: US11368014B2Publication Date: 2022-06-21
- Inventor: Kristophor Ray Jensen
- Applicant: Littelfuse, Inc.
- Applicant Address: US IL Chicago
- Assignee: Littelfuse, Inc.
- Current Assignee: Littelfuse, Inc.
- Current Assignee Address: US IL Chicago
- Agency: KDB PLLC
- Main IPC: H02H5/10
- IPC: H02H5/10 ; H02H3/16 ; H02H3/05 ; H02H3/02 ; G01R31/52

Abstract:
A fault protection arrangement. The fault protection arrangement may include a neutral grounding resistor including a first non-ground end, connected to a neutralizing point, and a second non-ground end. The fault protection arrangement may include a neutral grounding resistance monitor assembly, directly coupled to the second non-ground end of the neutral grounding resistor. The neutral grounding resistance monitor assembly may include comprising a signal source coupled to the neutralizing-point; a first current sense circuit coupled between the signal source and the neutralizing-point; a first voltage sense circuit coupled between the signal source and the neutralizing-point; a second current sense circuit, comprising a current sensor, coupled between the second non-ground end of the neutral grounding resistor and a protective earth connection.
Public/Granted literature
- US20210359507A1 GROUND FAULT PROTECTION CIRCUIT AND TECHNIQUES Public/Granted day:2021-11-18
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