Invention Grant
US07973535B2 Methods and apparatus to manage ground fault conditions with a single coil
有权
用单线圈管理接地故障情况的方法和装置
- Patent Title: Methods and apparatus to manage ground fault conditions with a single coil
- Patent Title (中): 用单线圈管理接地故障情况的方法和装置
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Application No.: US12908684Application Date: 2010-10-20
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Publication No.: US07973535B2Publication Date: 2011-07-05
- Inventor: Artur J. Lewinski , Ross Teggatz , Thomas E. Cosby
- Applicant: Artur J. Lewinski , Ross Teggatz , Thomas E. Cosby
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent William B. Kempler; Wade J. Brady, III; Frederick J. Telecky, Jr.
- Main IPC: G01R31/02
- IPC: G01R31/02
Abstract:
A ground fault detection device includes a sense coil including a primary winding and a secondary winding to detect current in a line conductor and a neutral conductor. It also includes a capacitor in parallel with the secondary winding and a virtual inductor to form a resonance circuit having a signal proportional to the current and being indicative of a ground fault condition.
Public/Granted literature
- US20110032646A1 METHODS AND APPARATUS TO MANAGE GROUND FAULT CONDITIONS WITH A SINGLE COIL Public/Granted day:2011-02-10
Information query
