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Title: Non-contact current and voltage sensor

Abstract

A detachable current and voltage sensor provides an isolated and convenient device to measure current passing through a conductor such as an AC branch circuit wire, as well as providing an indication of an electrostatic potential on the wire, which can be used to indicate the phase of the voltage on the wire, and optionally a magnitude of the voltage. The device includes a housing that contains the current and voltage sensors, which may be a ferrite cylinder with a hall effect sensor disposed in a gap along the circumference to measure current, or alternative a winding provided through the cylinder along its axis and a capacitive plate or wire disposed adjacent to, or within, the ferrite cylinder to provide the indication of the voltage.

Inventors:
; ; ; ; ;
Issue Date:
Research Org.:
International Business Machines Corp., Armonk, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1128541
Patent Number(s):
8680845
Application Number:
13/024,181
Assignee:
International Business Machines Corporation (Armonk, NY)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES
DOE Contract Number:  
EE0002897
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Carpenter, Gary D, El-Essawy, Wael, Ferreira, Alexandre Peixoto, Keller, Thomas Walter, Rubio, Juan C, and Schappert, Michael A. Non-contact current and voltage sensor. United States: N. p., 2014. Web.
Carpenter, Gary D, El-Essawy, Wael, Ferreira, Alexandre Peixoto, Keller, Thomas Walter, Rubio, Juan C, & Schappert, Michael A. Non-contact current and voltage sensor. United States.
Carpenter, Gary D, El-Essawy, Wael, Ferreira, Alexandre Peixoto, Keller, Thomas Walter, Rubio, Juan C, and Schappert, Michael A. Tue . "Non-contact current and voltage sensor". United States. https://www.osti.gov/servlets/purl/1128541.
@article{osti_1128541,
title = {Non-contact current and voltage sensor},
author = {Carpenter, Gary D and El-Essawy, Wael and Ferreira, Alexandre Peixoto and Keller, Thomas Walter and Rubio, Juan C and Schappert, Michael A},
abstractNote = {A detachable current and voltage sensor provides an isolated and convenient device to measure current passing through a conductor such as an AC branch circuit wire, as well as providing an indication of an electrostatic potential on the wire, which can be used to indicate the phase of the voltage on the wire, and optionally a magnitude of the voltage. The device includes a housing that contains the current and voltage sensors, which may be a ferrite cylinder with a hall effect sensor disposed in a gap along the circumference to measure current, or alternative a winding provided through the cylinder along its axis and a capacitive plate or wire disposed adjacent to, or within, the ferrite cylinder to provide the indication of the voltage.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {3}
}

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Works referenced in this record:

Current Sensor
patent-application, July 2005


Folding Current Sensor
patent-application, January 2010


Calibration of Non-Contact Current Sensors
patent-application, December 2012


Current Sensing Techniques: A Review
journal, April 2009


Non-contact voltage measurement using electronically varying capacitance
journal, January 2010