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Class Information
Number: 324/551
Name: Electricity: measuring and testing > Fault detecting in electric circuits and of electric components > Of individual circuit component or element > Insulation
Description: Subject matter for checking a defect in a nonconductive material which separates the conductor from an unintentional electrical path between another conductor or ground.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7602194 |
Apparatus and method of water absorption test for generator stator winding insulator using cross capacitance |
Oct. 13, 2009 |
| 7595644 |
Power-over-ethernet isolation loss detector |
Sep. 29, 2009 |
| 7579843 |
Methods and apparatus for analyzing partial discharge in electrical machinery |
Aug. 25, 2009 |
| 7554336 |
Method for measuring the insulation resistance in an IT network |
Jun. 30, 2009 |
| 7486084 |
Apparatus and method for identifying the presence of high conductivity or permittivity conditions in electrically insulating materials |
Feb. 3, 2009 |
| 7479797 |
TDDB test pattern and method for testing TDDB of MOS capacitor dielectric |
Jan. 20, 2009 |
| 7348190 |
Method of detecting a defect in a semiconductor device |
Mar. 25, 2008 |
| 7317316 |
Apparatus and method for measuring the insulation resistance of a fuel cell system |
Jan. 8, 2008 |
| 7292048 |
Method and apparatus for measuring a dielectric response of an electrical insulating system |
Nov. 6, 2007 |
| 7271598 |
Conductor coil defect identifier |
Sep. 18, 2007 |
| 7256701 |
Motor driver |
Aug. 14, 2007 |
| 7253639 |
Insulation resistance deterioration detection method and insulation resistance deterioration detection device for motor, and motor driver |
Aug. 7, 2007 |
| 7245976 |
Field apparatus |
Jul. 17, 2007 |
| 7202672 |
Partial discharge sensor |
Apr. 10, 2007 |
| 7183776 |
System and method for performing online partial discharge testing |
Feb. 27, 2007 |
| 7183774 |
Method of detecting partial discharges and diagnostic system for electrical apparatus |
Feb. 27, 2007 |
| 7176694 |
Testing device and method of testing insulated handles used for servicing high voltage transmission lines |
Feb. 13, 2007 |
| 7170309 |
TDDB test pattern and method for testing TDDB of MOS capacitor dielectric |
Jan. 30, 2007 |
| 7167007 |
Apparatus and method for field testing MOV arresters |
Jan. 23, 2007 |
| 7148674 |
Apparatus for automatically measuring a relatively wide range of leakage currents |
Dec. 12, 2006 |
| 7135868 |
Method and apparatus for testing gate oxide with fuse |
Nov. 14, 2006 |
| 7135988 |
Temperature recorder and temperature recording and controlling system for power supply equipment |
Nov. 14, 2006 |
| 7129710 |
Printed circuit card |
Oct. 31, 2006 |
| 7112968 |
Method and apparatus for detecting a partial discharge in a high-voltage transmission and distribution system |
Sep. 26, 2006 |
| 7109722 |
Apparatus and method for PCB smoke and burn detection and prevention |
Sep. 19, 2006 |
| 7110895 |
Leakage current or resistance measurement method, and monitoring apparatus and monitoring system of the same |
Sep. 19, 2006 |
| 7061253 |
Apparatus and method for field testing polymer insulators |
Jun. 13, 2006 |
| 7042229 |
System and method for on line monitoring of insulation condition for DC machines |
May. 9, 2006 |
| 7019531 |
Procedure and device for the evaluation of the quality of a cable |
Mar. 28, 2006 |
| 7013701 |
Inspection method of multilayer gas sensing device |
Mar. 21, 2006 |
| 7012435 |
State detecting method and insulation resistance fall detector |
Mar. 14, 2006 |
| 7005860 |
Insulation resistance drop detector and method of detecting state thereof |
Feb. 28, 2006 |
| 6995565 |
Thermographic wiring inspection |
Feb. 7, 2006 |
| 6960915 |
Electric circuit system |
Nov. 1, 2005 |
| 6937027 |
Hybrid type sensor for detecting high frequency partial discharge |
Aug. 30, 2005 |
| 6927562 |
Power factor/tan .delta.testing of high voltage bushings on power transformers, current transformers, and circuit breakers |
Aug. 9, 2005 |
| 6927564 |
Multimeter instrument with touch-sensitive selection device |
Aug. 9, 2005 |
| 6924650 |
Device for generator diagnosis with built-in rotor |
Aug. 2, 2005 |
| 6906525 |
Ground detection apparatus for electric vehicle |
Jun. 14, 2005 |
| 6879164 |
Method and device for insulation monitoring of a DC network |
Apr. 12, 2005 |
| 6873159 |
Device and method for monitoring a capacitor bushing |
Mar. 29, 2005 |
| 6870374 |
Process for identifying abnormalities in power transformers |
Mar. 22, 2005 |
| 6864688 |
Apparatus and method of monitoring insulation of a DC network that is electrically insulated with respect to the ground potential of a device |
Mar. 8, 2005 |
| 6858448 |
Method for evaluating and manufacturing a semiconductor device |
Feb. 22, 2005 |
| 6825670 |
Method and device for testing a telecommunication cable |
Nov. 30, 2004 |
| 6819076 |
Active EMI filter with magnetoresistive sensor for common mode noise current |
Nov. 16, 2004 |
| 6806720 |
Method of reliability testing |
Oct. 19, 2004 |
| 6794883 |
Method and system for monitoring winding insulation resistance |
Sep. 21, 2004 |
| 6781401 |
TDDB test pattern and method for testing TDDB of MOS capacitor dielectric |
Aug. 24, 2004 |
| 6765390 |
Diagnostic wiring verification tester |
Jul. 20, 2004 |
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