216711 ⎘
Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus
Sub-classes:FAULT MANAGED POWER INCLUDING OPTICAL COMMUNICATION ELEMENTS
#2SEMICONDUCTOR SWITCH DEVICE, POWER DISTRIBUTION DEVICE, AND POWER SHORT DETECTION METHOD
#3APPARATUSES AND METHODS FOR PASSIVE FAULT MONITORING OF CURRENT SENSING DEVICES IN PROTECTIVE CIRCUIT INTERRUPTERS
#4FAULT MANAGED POWER INCLUDING OPTICAL COMMUNICATION ELEMENTS
#5DETECTING ELECTRICAL ARCING IN HOUSEHOLD ELECTRICAL WIRING
#6DEVICE HAVING REDUNDANT POWER SUPPLY LINES
#7APPARATUS AND METHOD OF DETECTING AND CLASSIFYING FAULTS IN CIRCUIT INTERRUPTER IN MICROSECONDS
#8Monitoring System and Monitoring Method of Wire Between Power Supply End and Equipment End
#9Apparatuses and methods for passive fault monitoring of current sensing devices in protective circuit interrupters
#10SOLENOID-BASED VOLTAGE IMBALANCE PROTECTION
#11AIRCRAFT SOLID STATE POWER CONTROLLER AND METHOD OF OPERATING AN AIRCRAFT SOLID STATE POWER CONTROLLER
#12Multi-Voltage Capacitive Filter Protection Circuit
#13Method and System for Detecting Phenomenon in Electrical Power Network
#14Method and system for detecting location of fault in a cable
#15LOAD SWITCH AND POWER SYSTEM
#16Apparatuses and methods for passive fault monitoring of current sensing devices in protective circuit interrupters
#17Data alignment method, differential protector and differential protection system
#18Detecting electrical arcing in household electrical wiring
#19Method for Detecting a Series Resistance Fault in a Digital-Electricity Transmission System
#20Apparatuses and methods for passive fault monitoring of current sensing devices in protective circuit interrupters
#21Detecting electrical arcing in household electrical wiring
#22Protection assistance device of multiple circuit breakers in low-voltage system
#23ARCING FAULT RECOGNITION UNIT
#24Control device
#25Apparatuses and methods for passive fault monitoring of current sensing devices in protective circuit interrupters
#26Systems and methods for determining a time delay in electrical power systems
#27SYSTEM AND METHOD FOR DETECTING ARC FAULTS
#28Methods and apparatus to prevent undesired triggering of short circuit or over current protection
#29Safety design for DC link capacitors
#30Power distribution system and method
#31Method of operation a differential protection scheme
#32Apparatuses and methods for passive fault monitoring of current sensing devices in protective circuit interrupters
#33Relating to direct current protection schemes
#34Direct current distance protection schemes
#35Electronic protection device
#36Protective relay device
#37Power distribution systems and methods of performing ground fault detection in power distribution systems with a communication network
#38Method of detecting electrical disturbance by DC component
#39Oring control using low voltage device for high voltage DC rack
#40Travelling wave protection of a transmission line
#41Semiconductor device
#42Protection circuit for electronic system
#43Distributed arc fault protection between outlet and circuit breaker
#44Systems and methods for arc detection
#45Protection circuit for electronic system
#46Cascade switch device and voltage protection method
#47Method for detecting fault and current differential protection system thereof
#48Power transformer inrush current detector
#49Protective relay system and protective relay device
#50Methods and apparatus for sensing ground leakage and automated self testing thereof
#51Method for identifying the fault by current differential protection and device thereof
#52Protection circuit and a gate driving circuitry
#53Protection device with directional zone selective interlock functionality
#54Electronic module, electronic arrangement and method for producing an electronic module
#55Gate driving circuit and array substrate
#56Method of detecting state of power cable in inverter system
#57Supply system for an aircraft, use of a shielded supply line in an aircraft and an aircraft with a supply system
#58Clock synchronization for line differential protection
#59Power supply system, vehicle incorporating the same and method for controlling power supply system
#60Method of measurement for detecting a fault of a three-phase zone
#61Fault protection system for a power system of dynamically positioned vessel
#62Arrester
#63Systems, methods, and apparatus for modifying sensor time stamp data
#64Electrical storage apparatus
#65Methods and apparatus for sensing ground leakage and automated self testing thereof
#66DC feeder protection system
#67Methodology for protection of current transformers from open circuit burden
#68Integral current transformer shunt resistor
#69Equivalent alpha plane fault determination for a multi-terminal power apparatus
#70Charging current compensation for line current differential protection
#71Protective relay device
#72Method for increasing the sensitivity of a differential protection system
#73Differential power detection
#74Apparatus, system, and method for detecting a power system component failure
#75Arc-flash hazard protection system for three-phase electrical distribution system
#76Fast-responding short circuit protection system with self-reset for use in circuit supplied by DC power
#77Current differential relay device, signal processing method thereof and power transmission line protection system
#78Systems and methods for power swing and out-of-step detection using time stamped data
#79Method and device for controlled reclosing of a circuit breaker
#80Relay device and corresponding method
#81Differential arc fault detection
#82Power diagnostic system and method
#83Electrical fault detection
#84Method and an apparatus for supervising the operation of current transformers
#85Apparatus and method for detecting the loss of a current transformer connection coupling a current differential relay to an element of a power system
#86Device and method for protection against overcurrents in an electrical energy distribution cabinet
#87Monitor circuit