Invention Grant
- Patent Title: Monitor device, ground fault protection circuit and techniques
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Application No.: US16297487Application Date: 2019-03-08
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Publication No.: US11108222B2Publication Date: 2021-08-31
- Inventor: Kristophor Jensen , Kip M. Larson , Cornelis Verhey
- Applicant: Littelfuse, Inc.
- Applicant Address: US IL Chicago
- Assignee: Littelfuse, Inc.
- Current Assignee: Littelfuse, Inc.
- Current Assignee Address: US IL Chicago
- Agency: Kacvinsky Daisak Bluni PLLC
- Main IPC: G01R31/50
- IPC: G01R31/50 ; H02H1/00 ; H02H9/08
Abstract:
A neutral grounding resistor fault protection arrangement. The fault protection arrangement may include a neutral grounding resistor, the neutral grounding resistor comprising a ground end and a non-ground end; a sense circuit, coupled to the non-ground end of the neutral grounding resistor; and a neutral grounding monitor, coupled to the non-ground end of the neutral grounding resistor, the neutral grounding monitor comprising an injection signal generator, the injection signal generator arranged to generate a frequency of 240 Hz or greater.
Public/Granted literature
- US20190288499A1 MONITOR DEVICE, GROUND FAULT PROTECTION CIRCUIT AND TECHNIQUES Public/Granted day:2019-09-19
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