involving comparison of phase voltages

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CPC
H02H3/353

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HELECTRICITY H02Electric power H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS H02H3/00Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection integrated protection

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H02H3/353involving comparison of phase voltages

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Patents Grantslast 30 patents

Information Patent Grant
Method for identifying element failure in capacitor banks
- Patent number 11,923,676
- Issue date Mar 5, 2024
- Haijie Wang
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power conversion apparatus that judges system power failure based o...
- Patent number 11,527,966
- Issue date Dec 13, 2022
- Kabushiki Kaisha Toshiba
- Yuusuke Kouno
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Location of a ground fault in an IT network
- Patent number 11,307,236
- Issue date Apr 19, 2022
- Siemens Aktiengesellschaft
- Benno Weis
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method for controlling a leakage current protection device in a pho...
- Patent number 10,965,117
- Issue date Mar 30, 2021
- ABB Schweiz AG
- Marco Belli
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Ground fault overvoltage relay device
- Patent number 10,714,924
- Issue date Jul 14, 2020
- Mitsubishi Electric Corporation
- Tomoyoshi Matsumoto
- G01 - MEASURING TESTING
Information Patent Grant
Safety detection device and method of grid-connected inverter
- Patent number 10,505,370
- Issue date Dec 10, 2019
- SUNGROW POWER SUPPLY CO., LTD.
- Houlai Geng
- G01 - MEASURING TESTING
Information Patent Grant
Safety tripping device for a frame-type ACB drawer seat
- Patent number 10,176,956
- Issue date Jan 8, 2019
- Guizhou Taiyong Changzheng Technology Co., Ltd.
- Zhengqian Huang
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
System for detecting a falling electric power conductor and related...
- Patent number 10,153,635
- Issue date Dec 11, 2018
- San Diego Gas & Electric Company
- William O'Brien
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and apparatus for detecting vector shift
- Patent number 10,041,985
- Issue date Aug 7, 2018
- ABB Schweiz AG
- Frej Suomi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
System for detecting a falling electric power conductor and related...
- Patent number 9,413,156
- Issue date Aug 9, 2016
- San Diego Gas & Electric Company
- William O'Brien
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Supply voltage auto-sensing
- Patent number 8,823,356
- Issue date Sep 2, 2014
- SolarBridge Technologies, Inc.
- Patrick L. Chapman
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Motor drive ground fault detection
- Patent number 8,305,723
- Issue date Nov 6, 2012
- Hamilton Sundstrand Corporation
- Sastry V. Vedula
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
System and method for polyphase ground-fault circuit-interrupters
- Patent number 8,300,369
- Issue date Oct 30, 2012
- Chevron U.S.A. Inc.
- Paul S. Hamer
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Three phase power monitor
- Patent number 5,337,206
- Issue date Aug 9, 1994
- Kadah; Andrew S.
- Andrew S. Kadah
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Fault detection circuit for use in determining the existence of a f...
- Patent number 5,315,256
- Issue date May 24, 1994
- Cox & Company, Inc.
- Martin Schuyler
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Fault detection circuit for use in determining the existence of a f...
- Patent number 5,168,236
- Issue date Dec 1, 1992
- Cox & Company, Inc.
- Martin Schuyler
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Automatic or manual circuit restoration apparatus after a prescribe...
- Patent number 5,097,379
- Issue date Mar 17, 1992
- John F. Walton
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Fault detector for a three-phase alternating current supply
- Patent number 4,751,653
- Issue date Jun 14, 1988
- American Standard Inc.
- Brian S. Junk
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Fault identification in electric power transmission systems
- Patent number 4,390,835
- Issue date Jun 28, 1983
- The General Electric Company Limited
- Makeen M. Elkateb
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Phase balance monitoring system incorporating voltage and phase seq...
- Patent number 4,199,798
- Issue date Apr 22, 1980
- Eaton Corporation
- Elton D. Leppke
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Circuit arrangement for detecting grounds in a static converter
- Patent number 4,198,628
- Issue date Apr 15, 1980
- Siemens Aktiengesellschaft
- Hans Laber
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Chiller controls
- Patent number 4,084,406
- Issue date Apr 18, 1978
- Fedders Corporation
- Daniel A. Brenneman
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Phase imbalance detection circuit
- Patent number 4,021,703
- Issue date May 3, 1977
- Westinghouse Electric Corporation
- Wardell Gary
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and apparatus for fault detection in a three-phase electric...
- Patent number 3,958,153
- Issue date May 18, 1976
- Brown, Boveri & Co., AG
- Venkat Narayan
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
3895264
- Patent number 3,895,264
- Issue date Jul 15, 1975
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
3859564
- Patent number 3,859,564
- Issue date Jan 7, 1975
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
3736470
- Patent number 3,736,470
- Issue date May 29, 1973
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
3699391
- Patent number 3,699,391
- Issue date Oct 17, 1972
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
3633072
- Patent number 3,633,072
- Issue date Jan 4, 1972
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
3535589
- Patent number 3,535,589
- Issue date Oct 20, 1970
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR IDENTIFYING ELEMENT FAILURE IN CAPACITOR BANKS
- Publication number 20230052911
- Publication date Feb 16, 2023
- MHO TECHNOLOGIES CORP.
- Haijie WANG
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
POWER CONVERSION APPARATUS
- Publication number 20210288592
- Publication date Sep 16, 2021
- Kabushiki Kaisha Toshiba
- Yuusuke KOUNO
- G01 - MEASURING TESTING
Information Patent Application
LOCATION OF A GROUND FAULT IN AN IT NETWORK
- Publication number 20200166558
- Publication date May 28, 2020
- SIEMENS AKTIENGESELLSCHAFT
- BENNO WEIS
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
A METHOD FOR CONTROLLING A LEAKAGE CURRENT PROTECTION DEVICE IN A P...
- Publication number 20190393695
- Publication date Dec 26, 2019
- ABB Schweiz AG
- Marco Belli
- G01 - MEASURING TESTING
Information Patent Application
METHOD AND DEVICE FOR CONTROLLING OPENING/CLOSING OF CIRCUIT BREAKER
- Publication number 20190027917
- Publication date Jan 24, 2019
- HYOSUNG HEAVY INDUSTRIES CORPORATION
- Young Jin KWON
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
GROUND FAULT OVERVOLTAGE RELAY DEVICE
- Publication number 20180351345
- Publication date Dec 6, 2018
- MITSUBISHI ELECTRIC CORPORATION
- Tomoyoshi MATSUMOTO
- G01 - MEASURING TESTING
Information Patent Application
SAFETY TRIPPING DEVICE FOR A FRAME-TYPE ACB DRAWER SEAT
- Publication number 20180144898
- Publication date May 24, 2018
- Guizhou Taiyong Changzheng Technology Co., Ltd.
- Zhengqian HUANG
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
IMBALANCE DETERMINING METHOD, IMBALANCE DETERMINING APPARATUS, AND...
- Publication number 20150100256
- Publication date Apr 9, 2015
- Fujitsu Limited
- Tetsuya KASHIWAGI
- G01 - MEASURING TESTING
Information Patent Application
THREE-PHASE POWER CONTROL APPARATUS AND METHOD
- Publication number 20140185171
- Publication date Jul 3, 2014
- HON HAI PRECISION INDUSTRY CO., LTD.
- WEN-KAO FENG
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SYSTEM FOR DETECTING A FALLING ELECTRIC POWER CONDUCTOR AND RELATED...
- Publication number 20140028116
- Publication date Jan 30, 2014
- SAN DIEGO GAS & ELECTRIC COMPANY
- William O'Brien
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Supply Voltage Auto-Sensing
- Publication number 20120242322
- Publication date Sep 27, 2012
- SolarBridge Technologies, Inc.
- Patrick L. Chapman
- G01 - MEASURING TESTING
Information Patent Application
MOTOR DRIVE GROUND FAULT DETECTION
- Publication number 20110255198
- Publication date Oct 20, 2011
- Sastry V. Vedula
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SYSTEM AND METHOD FOR POLYPHASE GROUND-FAULT CIRCUIT-INTERRUPTERS
- Publication number 20110075304
- Publication date Mar 31, 2011
- Chevron U.S.A. Inc.
- Paul S. Hamer
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
MOTOR DRIVE GROUND FAULT DETECTION
- Publication number 20100091419
- Publication date Apr 15, 2010
- Sastry V. Vedula
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Insulation diagnosis device
- Publication number 20030098694
- Publication date May 29, 2003
- Yasunobu Fujita
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

involving comparison of phase voltages

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Method for identifying element failure in capacitor banks

Power conversion apparatus that judges system power failure based o...

Location of a ground fault in an IT network

Method for controlling a leakage current protection device in a pho...

Ground fault overvoltage relay device

Safety detection device and method of grid-connected inverter

Safety tripping device for a frame-type ACB drawer seat

System for detecting a falling electric power conductor and related...

Method and apparatus for detecting vector shift

System for detecting a falling electric power conductor and related...

Supply voltage auto-sensing

Motor drive ground fault detection

System and method for polyphase ground-fault circuit-interrupters

Three phase power monitor

Fault detection circuit for use in determining the existence of a f...

Fault detection circuit for use in determining the existence of a f...

Automatic or manual circuit restoration apparatus after a prescribe...

Fault detector for a three-phase alternating current supply

Fault identification in electric power transmission systems

Phase balance monitoring system incorporating voltage and phase seq...

Circuit arrangement for detecting grounds in a static converter

Chiller controls

Phase imbalance detection circuit

Method and apparatus for fault detection in a three-phase electric...

3895264

3859564

3736470

3699391

3633072

3535589

Patents Applicationslast 30 patents

METHOD FOR IDENTIFYING ELEMENT FAILURE IN CAPACITOR BANKS

POWER CONVERSION APPARATUS

LOCATION OF A GROUND FAULT IN AN IT NETWORK

A METHOD FOR CONTROLLING A LEAKAGE CURRENT PROTECTION DEVICE IN A P...

METHOD AND DEVICE FOR CONTROLLING OPENING/CLOSING OF CIRCUIT BREAKER

GROUND FAULT OVERVOLTAGE RELAY DEVICE

SAFETY TRIPPING DEVICE FOR A FRAME-TYPE ACB DRAWER SEAT

IMBALANCE DETERMINING METHOD, IMBALANCE DETERMINING APPARATUS, AND...

THREE-PHASE POWER CONTROL APPARATUS AND METHOD

SYSTEM FOR DETECTING A FALLING ELECTRIC POWER CONDUCTOR AND RELATED...

Supply Voltage Auto-Sensing

MOTOR DRIVE GROUND FAULT DETECTION

SYSTEM AND METHOD FOR POLYPHASE GROUND-FAULT CIRCUIT-INTERRUPTERS

MOTOR DRIVE GROUND FAULT DETECTION

Insulation diagnosis device