| Patent | Date |
|---|
Primary And System Protection For An Electric Power Delivery System
App 20220131366 - Schweitzer, III; Edmund O. ; et al. | 2022-04-28 |
Detection of low-energy events in an electric power system
Grant 11,280,834 - Schweitzer, III , et al. March 22, 2 | 2022-03-22 |
Primary and system protection for an electric power delivery system
Grant 11,258,249 - Schweitzer, III , et al. February 22, 2 | 2022-02-22 |
Loopback Testing Of Electric Power Protection Systems
App 20210364557 - Schweitzer, III; Edmund O. ; et al. | 2021-11-25 |
Electrical arc event detection in an electric power system
Grant 11,165,238 - Schweitzer, III , et al. November 2, 2 | 2021-11-02 |
Secure traveling wave distance protection in an electric power delivery system
Grant 11,137,436 - Schweitzer, III , et al. October 5, 2 | 2021-10-05 |
Testing device for protective relays in electric power delivery systems
Grant 11,125,821 - Schweitzer, III , et al. September 21, 2 | 2021-09-21 |
Loopback testing of electric power protection systems
Grant 11,119,128 - Schweitzer, III , et al. September 14, 2 | 2021-09-14 |
Digital input electric power system panel meter
Grant 11,121,536 - Schweitzer, III , et al. September 14, 2 | 2021-09-14 |
Electric Power System Voltage Monitoring And Control With Energy Packets
App 20210278447 - Schweitzer, III; Edmund O. ; et al. | 2021-09-09 |
Equipment failure detection in an electric power system
Grant 11,112,466 - Schweitzer, III , et al. September 7, 2 | 2021-09-07 |
Data tunneling for testing equipment in electric power system
Grant 11,115,311 - Schweitzer, III , et al. September 7, 2 | 2021-09-07 |
Electric power system transducer failure monitor and measurement recovery
Grant 11,114,892 - Schweitzer, III , et al. September 7, 2 | 2021-09-07 |
Secure electric power delivery system protection during cyber threats
Grant 11,108,737 - Schweitzer, III , et al. August 31, 2 | 2021-08-31 |
High-fidelity voltage measurement using a capacitance-coupled voltage transformer
Grant 11,105,832 - Schweitzer, III , et al. August 31, 2 | 2021-08-31 |
Electric power system pricing with energy packets
Grant 11,100,595 - Schweitzer, III , et al. August 24, 2 | 2021-08-24 |
Multiple merging unit testing system
Grant 11,079,436 - Schweitzer, III , et al. August 3, 2 | 2021-08-03 |
Single-end traveling wave fault location using line-mounted device
Grant 11,067,617 - Schweitzer, III , et al. July 20, 2 | 2021-07-20 |
Waterfall display for high-speed streaming measurements
Grant 11,056,082 - Schweitzer, III , et al. July 6, 2 | 2021-07-06 |
Fault detection and protection during steady state using traveling waves
Grant 11,056,874 - Schweitzer, III , et al. July 6, 2 | 2021-07-06 |
Integration of primary protection relays for electric power delivery systems
Grant 11,050,234 - Schweitzer, III , et al. June 29, 2 | 2021-06-29 |
Redundant power module and discharge circuit for improved substation device availability
Grant 11,038,336 - Schweitzer, III , et al. June 15, 2 | 2021-06-15 |
Electric power system voltage monitoring and control with energy packets
Grant 11,035,891 - Schweitzer, III , et al. June 15, 2 | 2021-06-15 |
Traveling wave identification using distortions for electric power system protection
Grant 11,038,342 - Schweitzer, III , et al. June 15, 2 | 2021-06-15 |
Electric field powered devices in electric power systems
Grant 11,031,812 - Schweitzer, III , et al. June 8, 2 | 2021-06-08 |
Redundant Power Module And Discharge Circuit For Improved Substation Device Availability
App 20210167590 - Schweitzer, III; Edmund O. ; et al. | 2021-06-03 |
Energy packet control of generator prime mover
Grant 11,012,016 - Schweitzer, III , et al. May 18, 2 | 2021-05-18 |
Distance protection using traveling waves in an electric power delivery system
Grant 10,989,752 - Schweitzer, III , et al. April 27, 2 | 2021-04-27 |
Energy Packet Control Of Generator Prime Mover
App 20210111652 - Schweitzer, III; Edmund O. ; et al. | 2021-04-15 |
Electrical Arc Event Detection In An Electric Power System
App 20210111549 - Schweitzer, III; Edmund O. ; et al. | 2021-04-15 |
Loopback Testing Of Electric Power Protection Systems
App 20210109139 - Schweitzer, III; Edmund O. ; et al. | 2021-04-15 |
Digital Input Electric Power System Panel Meter
App 20210111550 - Schweitzer, III; Edmund O. ; et al. | 2021-04-15 |
Multiple Merging Unit Testing System
App 20210109157 - Schweitzer, III; Edmund O. ; et al. | 2021-04-15 |
Primary And System Protection For An Electric Power Delivery System
App 20210111555 - Schweitzer, III; Edmund O. ; et al. | 2021-04-15 |
Testing Device For Protective Relays In Electric Power Delivery Systems
App 20210109156 - Schweitzer, III; Edmund O. ; et al. | 2021-04-15 |
Electric Power System Transducer Failure Monitor And Measurement Recovery
App 20210111586 - Schweitzer, III; Edmund O. ; et al. | 2021-04-15 |
Equipment Failure Detection In An Electric Power System
App 20210109164 - Schweitzer, III; Edmund O. ; et al. | 2021-04-15 |
Reliable power module for improved substation device availability
Grant 10,951,057 - Schweitzer, III , et al. March 16, 2 | 2021-03-16 |
Integration Of Primary Protection Relays For Electric Power Delivery Systems
App 20210057901 - Schweitzer, III; Edmund O. ; et al. | 2021-02-25 |
High-fidelity Voltage Measurement Using A Capacitance-coupled Voltage Transformer
App 20210018538 - Schweitzer, III; Edmund O. ; et al. | 2021-01-21 |
Virtual display
Grant 10,896,658 - Schweitzer, III , et al. January 19, 2 | 2021-01-19 |
Secure Electric Power Delivery System Protection During Cyber Threats
App 20210014196 - Schweitzer, III; Edmund O. ; et al. | 2021-01-14 |
Fault Detection In Electric Power Delivery Systems Using Underreach, Directional, And Traveling Wave Elements
App 20200350760 - Schweitzer, III; Edmund O. ; et al. | 2020-11-05 |
High-fidelity voltage measurement using a capacitance-coupled voltage transformer
Grant 10,802,054 - Schweitzer, III , et al. October 13, 2 | 2020-10-13 |
Fault detection in electric power delivery systems using underreach, directional, and traveling wave elements
Grant 10,742,022 - Schweitzer, III , et al. A | 2020-08-11 |
Electric power system monitoring using high-frequency signals
Grant 10,656,198 - Schweitzer, III , et al. | 2020-05-19 |
Electric Power System Pricing With Energy Packets
App 20200111176 - Schweitzer, III; Edmund O. ; et al. | 2020-04-09 |
Single-end Traveling Wave Fault Location Using Line-mounted Device
App 20200110124 - Schweitzer, III; Edmund O. ; et al. | 2020-04-09 |
Detection Of Low-energy Events In An Electric Power System
App 20200072904 - Schweitzer, III; Edmund O. ; et al. | 2020-03-05 |
High-frequency electric power system signal processing system
Grant 10,581,237 - Schweitzer, III , et al. | 2020-03-03 |
Detection of an electric power system fault direction using traveling waves
Grant 10,483,747 - Schweitzer, III , et al. Nov | 2019-11-19 |
Electric Power System Monitoring Using High-frequency Signals
App 20190339321 - Schweitzer, III; Edmund O. ; et al. | 2019-11-07 |
Time-domain line differential protection of electric power delivery systems
Grant 10,422,827 - Schweitzer, III , et al. Sept | 2019-09-24 |
Time signal manipulation and spoofing detection based on a latency of a communication system
Grant 10,375,108 - Schweitzer, III , et al. | 2019-08-06 |
Service availability monitor
Grant 10,368,147 - Schweitzer, III July 30, 2 | 2019-07-30 |
High-fidelity voltage measurement using resistive divider in a capacitance-coupled voltage transformer
Grant 10,345,363 - Schweitzer, III , et al. July 9, 2 | 2019-07-09 |
High-fidelity Voltage Measurement Using A Capacitance-coupled Voltage Transformer
App 20190195918 - Schweitzer, III; Edmund O. ; et al. | 2019-06-27 |
Traveling Wave Fault Location With Dispersion Compensation In Electric Power Delivery Systems
App 20190187202 - Schweitzer, III; Edmund O. ; et al. | 2019-06-20 |
Time-domain distance line protection of electric power delivery systems
Grant 10,310,005 - Schweitzer, III , et al. | 2019-06-04 |
Time-domain differential line protection of electric power delivery systems
Grant 10,310,004 - Schweitzer, III , et al. | 2019-06-04 |
Traveling wave based single end fault location
Grant 10,302,690 - Schweitzer, III , et al. | 2019-05-28 |
Fault Detection And Protection During Steady State Using Traveling Waves
App 20190157854 - Schweitzer, III; Edmund O. ; et al. | 2019-05-23 |
Traveling wave based single end fault location
Grant 10,295,585 - Schweitzer, III , et al. | 2019-05-21 |
Distance Protection Using Traveling Waves In An Electric Power Delivery System
App 20190094291 - Schweitzer, III; Edmund O. ; et al. | 2019-03-28 |
Secure Traveling Wave Distance Protection In An Electric Power Delivery System
App 20190094292 - Schweitzer, III; Edmund O. ; et al. | 2019-03-28 |
Traveling Wave Identification Using Distortions For Electric Power System Protection
App 20190094290 - Schweitzer, III; Edmund O. ; et al. | 2019-03-28 |
High-fidelity Voltage Measurement Using Resistive Divider In A Capacitance-coupled Voltage Transformer
App 20190094287 - Schweitzer, III; Edmund O. ; et al. | 2019-03-28 |
Accuracy Of Event Locating On Powerlines Based On Field Data
App 20190094288 - Schweitzer, III; Edmund O. | 2019-03-28 |
Fault detection and protection during steady state using traveling waves
Grant 10,236,675 - Schweitzer, III , et al. | 2019-03-19 |
Fault location using traveling waves
Grant 10,228,409 - Schweitzer, III , et al. | 2019-03-12 |
Electric power system monitoring using high-frequency signals
Grant 10,180,451 - Schweitzer, III , et al. Ja | 2019-01-15 |
Electric power system monitoring using distributed conductor-mounted devices
Grant 10,161,986 - Schweitzer, III , et al. Dec | 2018-12-25 |
Time-domain Line Differential Protection Of Electric Power Delivery Systems
App 20180292448 - Schweitzer, III; Edmund O. ; et al. | 2018-10-11 |
Time-domain directional line protection of electric power delivery systems
Grant 10,090,664 - Schweitzer, III , et al. October 2, 2 | 2018-10-02 |
Time-domain Distance Line Protection Of Electric Power Delivery Systems
App 20180278048 - Schweitzer, III; Edmund O. ; et al. | 2018-09-27 |
Service Availability Monitor
App 20180234745 - Schweitzer, III; Edmund O. | 2018-08-16 |
Time-domain Differential Line Protection Of Electric Power Delivery Systems
App 20180212421 - Schweitzer, III; Edmund O. ; et al. | 2018-07-26 |
Traveling Wave Based Single End Fault Location
App 20180196100 - Schweitzer, III; Edmund O. ; et al. | 2018-07-12 |
Traveling Wave Based Single End Fault Location
App 20180136269 - Schweitzer, III; Edmund O. ; et al. | 2018-05-17 |
Electric Power System Monitoring Using Distributed Conductor-mounted Devices
App 20180106851 - Schweitzer, III; Edmund O. ; et al. | 2018-04-19 |
Time-domain Line Differential Protection Of Electric Power Delivery Systems
App 20180083437 - Schweitzer, III; Edmund O. ; et al. | 2018-03-22 |
Fault Detection and Protection During Steady State Using Traveling Waves
App 20180034258 - Schweitzer, III; Edmund O. ; et al. | 2018-02-01 |
Supervision of input signal channels
Grant 9,843,335 - Schweitzer, III , et al. December 12, 2 | 2017-12-12 |
Time Signal Manipulation and Spoofing Detection Based on a Latency of a Communication System
App 20170195362 - Schweitzer, III; Edmund O. ; et al. | 2017-07-06 |
Supervision of Input Signal Channels
App 20170187385 - Schweitzer, III; Edmund O. ; et al. | 2017-06-29 |
Fault Detection in Electric Power Delivery Systems Using Underreach, Directional, and Traveling Wave Elements
App 20170146613 - Schweitzer, III; Edmund O. ; et al. | 2017-05-25 |
Arc flash protection system with self-test
Grant 9,653,904 - Schweitzer, III , et al. May 16, 2 | 2017-05-16 |
Fault Location Using Traveling Waves
App 20170131343 - Schweitzer, III; Edmund O. ; et al. | 2017-05-11 |
High-Frequency Electric Power System Signal Processing System
App 20170110875 - Schweitzer, III; Edmund O. ; et al. | 2017-04-20 |
Fault detection in electric power delivery systems using underreach, directional, and traveling wave elements
Grant 9,627,881 - Schweitzer, III , et al. April 18, 2 | 2017-04-18 |
Electric Power System Monitoring Using High-Frequency Signals
App 20170102426 - Schweitzer, III; Edmund O. ; et al. | 2017-04-13 |
Traveling Wave Directional Element
App 20170104324 - Schweitzer, III; Edmund O. ; et al. | 2017-04-13 |
Time-domain Directional Line Protection Of Electric Power Delivery Systems
App 20170082675 - Schweitzer, III; Edmund O. ; et al. | 2017-03-23 |
Fault detection in electric power delivery systems using underreach, directional, and traveling wave elements
Grant 9,594,112 - Schweitzer, III , et al. March 14, 2 | 2017-03-14 |
Fault location using traveling waves
Grant 9,588,168 - Schweitzer, III , et al. March 7, 2 | 2017-03-07 |
Recording of operating parameters of an intelligent electronic device
Grant 9,581,976 - Schweitzer, III , et al. February 28, 2 | 2017-02-28 |
Fault Detection In Electric Power Delivery Systems Using Underreach, Directional, And Traveling Wave Elements
App 20170012424 - Schweitzer, III; Edmund O. ; et al. | 2017-01-12 |
Fault detection in electric power delivery systems using underreach, directional, and traveling wave elements
Grant 9,470,748 - Schweitzer, III , et al. October 18, 2 | 2016-10-18 |
Fault Location Using Traveling Waves
App 20160216310 - Schweitzer, III; Edmund O. ; et al. | 2016-07-28 |
Distributed coordinated electric power delivery control system using component models
Grant 9,383,735 - Schweitzer, III , et al. July 5, 2 | 2016-07-05 |
Fault Detection In Electric Power Delivery Systems Using Underreach, Directional, And Traveling Wave Elements
App 20160077149 - Schweitzer, III; Edmund O. ; et al. | 2016-03-17 |
Fault Detection In Electric Power Delivery Systems Using Underreach, Directional, And Traveling Wave Elements
App 20160077150 - Schweitzer, III; Edmund O. ; et al. | 2016-03-17 |
Coordinated high-impedance fault detection systems and methods
Grant 9,160,158 - Schweitzer, III , et al. October 13, 2 | 2015-10-13 |
Arc Flash Protection System With Self-test
App 20150244160 - Schweitzer, III; Edmund O. ; et al. | 2015-08-27 |
Arc flash protection system with self-test
Grant 9,046,391 - Schweitzer, III , et al. June 2, 2 | 2015-06-02 |
Power line parameter adjustment and fault location using traveling waves
Grant 8,990,036 - Schweitzer, III , et al. March 24, 2 | 2015-03-24 |
Power Line Parameter Adjustment And Fault Location Using Traveling Waves
App 20150081234 - Schweitzer, III; Edmund O. ; et al. | 2015-03-19 |
Fault Location Using Traveling Waves By Calculating Traveling Wave Arrival Time
App 20150081235 - Schweitzer, III; Edmund O. ; et al. | 2015-03-19 |
Traveling Wave Validation Using Estimated Fault Location
App 20150081236 - Schweitzer, III; Edmund O. ; et al. | 2015-03-19 |
Network access management via a secondary communication channel
Grant 8,793,767 - Schweitzer, III , et al. July 29, 2 | 2014-07-29 |
Fault location using traveling waves
Grant 8,781,766 - Schweitzer, III , et al. July 15, 2 | 2014-07-15 |
Recording of Operating Parameters of an Intelligent Electronic Device
App 20140128999 - Schweitzer, III; Edmund O ; et al. | 2014-05-08 |
Systems and method for obtaining a load model and related parameters based on load dynamics
Grant 8,706,309 - Schweitzer, III , et al. April 22, 2 | 2014-04-22 |
Coordinated High-impedance Fault Detection Systems And Methods
App 20140104738 - Schweitzer, III; Edmund O. ; et al. | 2014-04-17 |
Distributed Coordinated Wide-area Control For Electric Power Delivery Systems
App 20140100702 - Schweitzer, III; Edmund O. ; et al. | 2014-04-10 |
Electric power system automation using time coordinated instructions
Grant 8,682,496 - Schweitzer, III , et al. March 25, 2 | 2014-03-25 |
Power angle monitor
Grant 8,674,683 - Schweitzer, III , et al. March 18, 2 | 2014-03-18 |
Protective device with metering and oscillography
Grant 8,675,329 - Schweitzer, III March 18, 2 | 2014-03-18 |
Fault Location Using Traveling Waves
App 20140074414 - Schweitzer, III; Edmund O. ; et al. | 2014-03-13 |
Network Access Management via a Secondary Communication Channel
App 20140068711 - Schweitzer, III; Edmund O. ; et al. | 2014-03-06 |
Fault location using traveling waves
Grant 8,655,609 - Schweitzer, III , et al. February 18, 2 | 2014-02-18 |
Mobile auxilliary power system for electrical distribution and transmission systems
Grant 8,643,215 - Schweitzer, III February 4, 2 | 2014-02-04 |
Secure arc flash detection
Grant 8,593,769 - Schweitzer, III November 26, 2 | 2013-11-26 |
Fault detection using phase comparison
Grant 8,581,723 - Schweitzer, III , et al. November 12, 2 | 2013-11-12 |
High speed contact capable of detecting, indicating and preventing maloperation due to internal failure
Grant 8,569,915 - Schweitzer, III , et al. October 29, 2 | 2013-10-29 |
High speed signaling of power system conditions
Grant 8,526,156 - Schweitzer, III September 3, 2 | 2013-09-03 |
High Speed Signaling Of Power System Conditions
App 20130163132 - Schweitzer, III; Edmund O. | 2013-06-27 |
Protective Device with Metering and Oscillography
App 20130135780 - Schweitzer, III; Edmund O. | 2013-05-30 |
Protective device with metering and oscillography
Grant 8,451,572 - Schweitzer, III May 28, 2 | 2013-05-28 |
Fault Location Using Traveling Waves
App 20130096854 - Schweitzer, III; Edmund O. ; et al. | 2013-04-18 |
Distributed bus differential protection using time-stamped data
Grant 8,405,944 - Donolo , et al. March 26, 2 | 2013-03-26 |
Systems and methods for generator ground fault protection
Grant 8,405,940 - Schweitzer, III , et al. March 26, 2 | 2013-03-26 |
Electric Power System Automation Using Time Coordinated Instructions
App 20120323397 - Schweitzer, III; Edmund O. ; et al. | 2012-12-20 |
Arc Flash Protection System with Self-Test
App 20120312977 - Schweitzer, III; Edmund O. ; et al. | 2012-12-13 |
Power Angle Monitor
App 20120313490 - Schweitzer, III; Edmund O. ; et al. | 2012-12-13 |
Three-phase faulted circuit indicator
Grant 8,319,628 - Schweitzer, III , et al. November 27, 2 | 2012-11-27 |
Arc flash protection with self-test
Grant 8,319,173 - Schweitzer, III , et al. November 27, 2 | 2012-11-27 |
Electric power system automation using time coordinated instructions
Grant 8,275,485 - Schweitzer, III , et al. September 25, 2 | 2012-09-25 |
Electric power system automation using time coordinated instructions
Grant 8,275,486 - Schweitzer, III , et al. September 25, 2 | 2012-09-25 |
Electric power system automation using time coordinated instructions
Grant 8,275,487 - Schweitzer, III , et al. September 25, 2 | 2012-09-25 |
Power angle monitor
Grant 8,248,061 - Schweitzer, III , et al. August 21, 2 | 2012-08-21 |
Power angle monitor
Grant 8,248,060 - Schweitzer, III , et al. August 21, 2 | 2012-08-21 |
System, method, and apparatus for using the sound signature of a device to determine its operability
Grant 8,155,326 - Schweitzer, III , et al. April 10, 2 | 2012-04-10 |
State and topology processor
Grant 8,112,235 - Schweitzer, III , et al. February 7, 2 | 2012-02-07 |
System and method for communicating power system information through a radio frequency device
Grant 8,059,006 - Schweitzer, III , et al. November 15, 2 | 2011-11-15 |
Power Angle Monitor
App 20110260042 - Schweitzer, III; Edmund O. ; et al. | 2011-10-27 |
Systems And Method For Obtaining A Load Model And Related Parameters Based On Load Dynamics
App 20110251732 - Schweitzer, III; Edmund O. ; et al. | 2011-10-13 |
Systems and Methods for Generator Ground Fault Protection
App 20110085272 - Schweitzer, III; Edmund O. ; et al. | 2011-04-14 |
Fault Detection Using Phase Comparison
App 20110080283 - Schweitzer, III; Edmund O. ; et al. | 2011-04-07 |
Electric Power System Automation Using Time Coordinated Instructions
App 20110035065 - Schweitzer, III; Edmund O. ; et al. | 2011-02-10 |
Electric Power System Automation Using Time Coordinated Instructions
App 20110035066 - Schweitzer, III; Edmund O. ; et al. | 2011-02-10 |
Electric Power System Automation Using Time Coordinated Instructions
App 20110035076 - Schweitzer, III; Edmund O. ; et al. | 2011-02-10 |
State And Topology Processor
App 20110004425 - Schweitzer, III; Edmund O. ; et al. | 2011-01-06 |
State and topology processor
Grant 7,856,327 - Schweitzer, III , et al. December 21, 2 | 2010-12-21 |
Fault Tolerant Time Synchronization
App 20100254225 - Schweitzer, III; Edmund O. ; et al. | 2010-10-07 |
Mobile Auxilliary Power System For Electrical Distribution And Transmission Systems
App 20100231040 - Schweitzer, III; Edmund O. | 2010-09-16 |
Electric Power System Control System With Selective Enclosure
App 20100201230 - Schweitzer, III; Edmund O. ; et al. | 2010-08-12 |
Magnetic probe apparatus and method for providing a wireless connection to a detection device
Grant 7,746,241 - Feight , et al. June 29, 2 | 2010-06-29 |
Providing Price And Service Information To Electric Power Customers
App 20100141463 - Schweitzer, III; Edmund O. | 2010-06-10 |
User interface for monitoring a plurality of faulted circuit indicators
Grant 7,692,538 - Schweitzer, III , et al. April 6, 2 | 2010-04-06 |
Secure Arc Flash Detection
App 20100073830 - Schweitzer, III; Edmund O. | 2010-03-25 |
Arc Flash Protection With Self-test
App 20100072355 - Schweitzer, III; Edmund O. ; et al. | 2010-03-25 |
Protective Device With Metering And Oscillography
App 20100073831 - Schweitzer, III; Edmund O. | 2010-03-25 |
Distributed Bus Differential Protection Using Time-stamped Data
App 20100002348 - Donolo; Marcos A. ; et al. | 2010-01-07 |
Three-phase Faulted Circuit Indicator
App 20090251308 - Schweitzer, III; Edmund O. ; et al. | 2009-10-08 |
Compensated inverse-time undervoltage load shedding systems
Grant 7,582,986 - Folkers , et al. September 1, 2 | 2009-09-01 |
State And Topology Processor
App 20090125158 - Schweitzer, III; Edmund O. ; et al. | 2009-05-14 |
Power Angle Monitor
App 20090091303 - Schweitzer, III; Edmund O. ; et al. | 2009-04-09 |
System, Method, and Apparatus for Using the Sound Signature of a Device to Determine its Operability
App 20090091441 - Schweitzer, III; Edmund O. ; et al. | 2009-04-09 |
Synchronized Phasor Processor For A Power System
App 20090088990 - Schweitzer, III; Edmund O. ; et al. | 2009-04-02 |
Systems and methods for performing a redundancy check using intelligent electronic devices in an electric power system
Grant 7,460,347 - Schweitzer, III , et al. December 2, 2 | 2008-12-02 |
System And Method For Communicating Power System Information Through A Radio Frequency Device
App 20080284585 - Schweitzer, III; Edmund O. ; et al. | 2008-11-20 |
Communications processor for electric power substations
Grant RE40,569 - Schweitzer, III , et al. November 11, 2 | 2008-11-11 |
Protective relay capable of protection applications without protection settings
Grant 7,375,941 - Schweitzer, III , et al. May 20, 2 | 2008-05-20 |
Apparatus and method for high-speed load shedding in an electrical power system
Grant 7,356,422 - Schweitzer, III April 8, 2 | 2008-04-08 |
Protective relay for power systems having fault distance measurement filter logic
Grant 7,345,862 - Schweitzer, III , et al. March 18, 2 | 2008-03-18 |
Distance protective relay using a programmable thermal model for thermal protection
Grant 7,239,496 - Schweitzer, III , et al. July 3, 2 | 2007-07-03 |
System for transitioning to the trip threshold for the start condition thermal model for a motor protection relay
Grant 7,123,457 - Schweitzer, III , et al. October 17, 2 | 2006-10-17 |
Protective relay capable of protection applications without protection settings
Grant 7,123,459 - Schweitzer, III , et al. October 17, 2 | 2006-10-17 |
Digital protective relay for power systems with operator-initiated record keeping capability
Grant 6,920,028 - Schweitzer, III July 19, 2 | 2005-07-19 |
Front panel light system for an electronic instrument which indicates the operating condition of the front panel lights and selected portions of the instrument
Grant 6,774,785 - Schweitzer, III August 10, 2 | 2004-08-10 |
Protective relay with synchronized phasor measurement capability for use in electric power systems
Grant 6,662,124 - Schweitzer, III , et al. December 9, 2 | 2003-12-09 |
Voltage and current source selection system for use in the protection, automation and control of an electric power system
Grant 6,608,742 - Schweitzer, III , et al. August 19, 2 | 2003-08-19 |
System of communicating output function status indications between two or more power system protective relays
Grant 5,793,750 - Schweitzer, III , et al. August 11, 1 | 1998-08-11 |
Multi-application relay for power systems
Grant 5,793,595 - Schweitzer, III , et al. August 11, 1 | 1998-08-11 |
Communications processor for electric power substations
Grant 5,680,324 - Schweitzer, III , et al. October 21, 1 | 1997-10-21 |
Fault identification system for use in protective relays for power transmission lines
Grant 5,515,227 - Roberts , et al. May 7, 1 | 1996-05-07 |
Motor protection relay using thermal models
Grant 5,436,784 - Schweitzer, III , et al. July 25, 1 | 1995-07-25 |
Distance relay with load encroachment protection, for use with power transmission lines
Grant 5,367,426 - Schweitzer, III November 22, 1 | 1994-11-22 |
Negative sequence directional element for a relay useful in protecting power transmission lines
Grant 5,365,396 - Roberts , et al. November 15, 1 | 1994-11-15 |
Negative sequence directional element for a relay useful in protecting power transmission lines
Grant 5,349,490 - Roberts , et al. September 20, 1 | 1994-09-20 |
Apparatus for insuring the security of output signals from protective relays used in electric power systems
Grant 5,317,472 - Schweitzer, III May 31, 1 | 1994-05-31 |
Polarizing potential transfer switch circuit for use with power transmission lines
Grant 5,262,679 - Schweitzer, III , et al. November 16, 1 | 1993-11-16 |
Apparatus and method for eliminating phase skew in a multi-channel data acquisition system
Grant 5,208,545 - Schweitzer, III May 4, 1 | 1993-05-04 |
Display transducer apparatus
Grant 5,160,926 - Schweitzer, III November 3, 1 | 1992-11-03 |
Relay for detecting a current disturbance and asserting an output
Grant 5,115,226 - Schweitzer, III May 19, 1 | 1992-05-19 |
Programmable bus-tie relay having a plurality of selectable setting groups
Grant 5,041,737 - Schweitzer, III , et al. August 20, 1 | 1991-08-20 |
Fault location method for radial transmission and distribution systems
Grant 4,996,624 - Schweitzer, III February 26, 1 | 1991-02-26 |
Single-ended transmission line fault locator
Grant 4,766,549 - Schweitzer, III , et al. August 23, 1 | 1988-08-23 |
Metering and protection system for an A.C. power system
Grant 4,300,182 - Schweitzer, III November 10, 1 | 1981-11-10 |
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