skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Non-contact current and voltage sensor having detachable housing incorporating multiple ferrite cylinder portions

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 formed from two portions that mechanically close around the wire and that contain the current and voltage sensors. The current sensor is a ferrite cylinder formed from at least three portions that form the cylinder when the sensor is closed around the wire with a hall effect sensor disposed in a gap between two of the ferrite portions along the circumference to measure current. A capacitive plate or wire is 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:
1248868
Patent Number(s):
9,322,855
Application Number:
14/319,389
Assignee:
INTERNATIONAL BUSINESS MACHINES CORPORATION (Armonk, NY)
DOE Contract Number:  
EE0002897
Resource Type:
Patent
Resource Relation:
Patent File Date: 2014 Jun 30
Country of Publication:
United States
Language:
English
Subject:
24 POWER TRANSMISSION AND DISTRIBUTION; 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 having detachable housing incorporating multiple ferrite cylinder portions. United States: N. p., 2016. 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 having detachable housing incorporating multiple ferrite cylinder portions. 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 having detachable housing incorporating multiple ferrite cylinder portions". United States. https://www.osti.gov/servlets/purl/1248868.
@article{osti_1248868,
title = {Non-contact current and voltage sensor having detachable housing incorporating multiple ferrite cylinder portions},
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 formed from two portions that mechanically close around the wire and that contain the current and voltage sensors. The current sensor is a ferrite cylinder formed from at least three portions that form the cylinder when the sensor is closed around the wire with a hall effect sensor disposed in a gap between two of the ferrite portions along the circumference to measure current. A capacitive plate or wire is disposed adjacent to, or within, the ferrite cylinder to provide the indication of the voltage.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {4}
}

Patent:

Save / Share:

Works referenced in this record:

Current Sensing Techniques: A Review
journal, April 2009

  • Ziegler, Silvio; Woodward, Robert C.; Iu, Herbert Ho-Ching
  • IEEE Sensors Journal, Vol. 9, Issue 4
  • DOI: 10.1109/JSEN.2009.2013914

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