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Class Information
Number: 324/512
Name: Electricity: measuring and testing > Fault detecting in electric circuits and of electric components > For fault location
Description: Subject matter where a signal produced indicates either direction or distance to a fault.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7609068 |
System and method for particulate sensor diagnostic |
Oct. 27, 2009 |
| 7598747 |
Noise injection apparatus for printed circuit board |
Oct. 6, 2009 |
| 7592816 |
Localizer cable fault analyzer |
Sep. 22, 2009 |
| 7554352 |
Method for determining information about the internal workings of a chip based on electro-magnetic emissions therefrom |
Jun. 30, 2009 |
| 7536663 |
Method and apparatus for quantifying the timing error induced by an impedance variation of a signal path |
May. 19, 2009 |
| 7535233 |
Traveling wave based relay protection |
May. 19, 2009 |
| 7532999 |
Determining root cause of matching problem and/or fleet measurement precision problem for measurement system |
May. 12, 2009 |
| 7526674 |
Methods and apparatuses for supplying power to processors in multiple processor systems |
Apr. 28, 2009 |
| 7523015 |
Field device |
Apr. 21, 2009 |
| 7514933 |
System and method for determining location of phase-to-earth fault |
Apr. 7, 2009 |
| 7516037 |
Method evaluating threshold level of a data cell in a memory device |
Apr. 7, 2009 |
| 7501830 |
Method, apparatus and computer-readable code for detecting an incipient ground fault in an electrical propulsion system |
Mar. 10, 2009 |
| 7498820 |
Method, apparatus and computer-readable code for detecting an incipient ground fault in an electrical propulsion system |
Mar. 3, 2009 |
| 7498819 |
Method, apparatus and computer-readable code for detecting an incipient ground fault in an electrical propulsion system |
Mar. 3, 2009 |
| 7487412 |
Test buffer design and interface mechanism for differential receiver AC/DC boundary scan test |
Feb. 3, 2009 |
| 7467063 |
Determining fleet matching problem and root cause issue for measurement system |
Dec. 16, 2008 |
| 7425896 |
Tag testing device, tag testing method, and tag testing program |
Sep. 16, 2008 |
| 7424400 |
Method of monitoring line faults in a medium voltage network |
Sep. 9, 2008 |
| 7400150 |
Remote fault monitoring in power lines |
Jul. 15, 2008 |
| 7388384 |
Method and system for monitoring partial discharge in gas-insulated apparatus |
Jun. 17, 2008 |
| 7363190 |
Sensor control circuit |
Apr. 22, 2008 |
| 7355412 |
Remote fault monitoring system |
Apr. 8, 2008 |
| 7324913 |
Methods and apparatus for testing a link between chips |
Jan. 29, 2008 |
| 7324921 |
Container inspection system |
Jan. 29, 2008 |
| 7310049 |
Status indicator |
Dec. 18, 2007 |
| 7298149 |
Fault location using measurements of current and voltage from one end of a line |
Nov. 20, 2007 |
| 7286963 |
Method and device for fault location on three terminal power line |
Oct. 23, 2007 |
| 7262603 |
System and method for sensing the formation of tin whiskers |
Aug. 28, 2007 |
| 7253633 |
Threshold adjustment accuracy for ground fault condition determination |
Aug. 7, 2007 |
| 7248057 |
Method, apparatus and computer-readable code for detecting on the fly an incipient ground fault in an electrical propulsion system of a locomotive |
Jul. 24, 2007 |
| 7221166 |
Fault location using measurements from two ends of a line |
May. 22, 2007 |
| 7188053 |
Method, computer program, and system for automated real-time signal analysis for detection, quantification, and prediction of signal changes |
Mar. 6, 2007 |
| 7187179 |
Wiring test structures for determining open and short circuits in semiconductor devices |
Mar. 6, 2007 |
| 7180300 |
System and method of locating ground fault in electrical power distribution system |
Feb. 20, 2007 |
| 7161356 |
Voltage/current testing equipment for microfluidic devices |
Jan. 9, 2007 |
| 7138924 |
Disturbance direction detection in a power monitoring system |
Nov. 21, 2006 |
| 7130766 |
Energy-saving evaluation apparatus, ecological driving evaluation apparatus, energy saving evaluation system, ecological driving evaluation system and method thereof |
Oct. 31, 2006 |
| 7107183 |
Recyclable electric junction box applicable to automotive vehicles |
Sep. 12, 2006 |
| 7075310 |
Device and method for testing for a wiring fault condition |
Jul. 11, 2006 |
| 7068045 |
Apparatus and method for real time determination of arc fault energy, location and type |
Jun. 27, 2006 |
| 7060966 |
Fiber optic tester |
Jun. 13, 2006 |
| 7062411 |
Method for process control of semiconductor manufacturing equipment |
Jun. 13, 2006 |
| 7039544 |
Method for testing circuit units to be tested and test apparatus |
May. 2, 2006 |
| 6990433 |
Portable performance benchmark device for computer systems |
Jan. 24, 2006 |
| 6970798 |
Method, apparatus and computer program product for high speed memory testing |
Nov. 29, 2005 |
| 6944554 |
Method for detecting fault on transmission lines by using harmonics and state transition diagram |
Sep. 13, 2005 |
| 6925616 |
Method to test power distribution system |
Aug. 2, 2005 |
| 6924647 |
Fault location method and device |
Aug. 2, 2005 |
| 6921672 |
Test structures and methods for inspection of semiconductor integrated circuits |
Jul. 26, 2005 |
| 6917888 |
Method and system for power line network fault detection and quality monitoring |
Jul. 12, 2005 |
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