Invention Grant
- Patent Title: Missing or broken neutral monitoring circuit for split phase electrical distribution configurations
- Patent Title (中): 用于分相配电配置的中性监测电路缺失或中断
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Application No.: US13860682Application Date: 2013-04-11
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Publication No.: US09335363B2Publication Date: 2016-05-10
- Inventor: Vincent Ferri , Todd Lathrop
- Applicant: EATON CORPORATION
- Applicant Address: US OH Cleveland
- Assignee: EATON CORPORATION
- Current Assignee: EATON CORPORATION
- Current Assignee Address: US OH Cleveland
- Agency: Eckert Seamans Cherin & Mellott, LLC
- Agent Nathaniel C. Wilks; Grant E. Coffield
- Main IPC: G01R31/02
- IPC: G01R31/02 ; H02H5/10

Abstract:
A circuit for indicating a broken or missing neutral in a split phase electrical distribution configuration having an unbalanced load includes: a voltage divider configured to divide the voltage difference between a first line and a second line and to output the divided voltage difference as a virtual neutral; a rectifier including an input of the virtual neutral, the neutral, and an output, the rectifier configured to rectify a voltage difference between the virtual neutral and the neutral; a determination circuit including an input of the rectified voltage difference, a reference voltage and an output, the determination circuit configured to determine if the neutral is missing or broken based on the rectified voltage difference and the reference voltage; and an indicator circuit configured to indicate when the neutral is missing or broken based on the output of the determination circuit.
Public/Granted literature
- US20140306715A1 MISSING OR BROKEN NEUTRAL MONITORING CIRCUIT FOR SPLIT PHASE ELECTRICAL DISTRIBUTION CONFIGURATIONS Public/Granted day:2014-10-16
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