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7626796 |
Power distribution unit with two pole circuit breaker
A power distribution unit includes a two pole circuit breaker having a first pole electrically coupled to an x-phase circuit portion of the power distribution unit and having a second pole...
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7619866 |
Electric trip device provided with monitoring means, circuit breaker comprising one such trip device and method of monitoring
The invention relates to an electronic trip device and a circuit breaker equipped with said electronic trip device, said trip device comprising at least one current sensor, an actuator, and an...
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7586724 |
Adaptive current limiter for wireless modem
Method and apparatus for preventing current overdraw by a wireless modem sinking current from a host power supply of a host device (e.g. laptop computer or personal digital assistant (PDA)). The...
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7558038 |
Field upgradeable circuit breaker firmware and programmer therefor
A system ( 10 ) is provided for communicating with a residential electronic circuit breaker ( 18, 20, 22, 24 ). The system ( 10 ) comprises a residential electrical wiring system ( 16 ) including a...
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7532956 |
Distributed power and protection system
A power distribution and protection system and method where an electrical power source distributes power to different load circuits and provides protection that changes on the fly as required by...
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7525782 |
Adaptive protection algorithm and system
An adaptive protection algorithm and system for protecting electrical distribution systems traces the flow of power through a distribution system, assigns a value (or rank) to each circuit breaker...
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7508642 |
Method and apparatus applying virtual Δt trip criterion in power distribution
A virtual ΔT trip criterion is implemented in an electrical power distribution system to provide current-based tripping for a solid state power switching device. A first-order system model is...
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7453678 |
Power interruption system for electronic circuit breaker
A system and method for controlling an electronic circuit breaker prevents the circuit breaker from contributing its own delay to a power interruption time window on a load. A monitor coupled to a...
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7446988 |
Fault condition protection
A circuit protects a power conversion system with a feedback control loop from a fault condition. The circuit has an oscillator having an input for generating a signal with a frequency and a timer...
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7365953 |
Apparatus and method for emulating a component in a circuit
A circuit and method for emulating a component in a circuit are shown that control a current controlled oscillator with a first current that is proportional to a square of a load current of the...
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7330342 |
Safety tester having a high-voltage switching relay protected by an in-line electronic circuit breaker
A multiple function safety compliance test instrument includes a high voltage output switching relay protected by a solid state in-line circuit breaker.
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7304829 |
Apparatus and method for filtering current sensor output signals
An electronic filter for filtering the output signal of a current sensor of a circuit breaker is disclosed. The current sensor has an output signal characteristic similar to that of a Rogowski coil...
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7292422 |
Occupancy-based circuit breaker control
A method and occupancy-based control device in a trip unit of a main circuit breaker, with the circuit breaker coupled to an electrical distribution system including at least one feeder circuit...
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7274548 |
Abnormal current determining method, electronic apparatus, and computer program of same
A cellular telephone 1 measures a current value after being turned on, and performs addition and subtraction of a predetermined margin to and from the measured value, and thereby sets up...
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7161782 |
Intelligent fuse box for the power distribution system of a vehicle
The present invention relates to intelligent fuse box ( 1 ) for a vehicle's multiplex power distribution system, the fuse box including outputs ( 3 ) for driving the vehicle's functional...
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7159054 |
System and method for digital protection and control device for a power distribution network
A digital protection and control (P & C) device for a power distribution network, which comprises a computerized control unit comprising a microprocessor. The P & C device, according to the present...
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7133270 |
Electric power switch with an electronic memory unit for parameters and conversion factors
An electrical power breaker includes an electronic protective device and an electronic memory. The memory is accommodated in the power breaker such that it is physically separated from said...
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7113075 |
Power supply methods and apparatus
A detection circuit includes a first power line, a first signal conditioning module operationally coupled to the first power line, a neutral line (N) operationally coupled to the first signal...
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7096155 |
Method, system and apparatus for providing real-time led status of embedded controllers to system management software
Embedded controller(s) in an information handling system have real-time status and activities represented by indicators, such as light emitting diodes (LEDs), associated with the embedded...
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7064658 |
Integrated vehicle power distribution and gateway system
A universal vehicle electric power distribution module employs reconfigurable inputs and outputs enabling use of the same hardware across vehicle lines. The module is scalable for ease of expansion...
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7064946 |
Electronic fuse
An electronic fuse comprising an integrated circuit having a control output terminal coupled to a control electrode of a power semiconductor switching device, the power semiconductor switching...
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7019493 |
Method and apparatus for protection of batteries
The protection circuit ( 30 ) comprises at least one switch (FET 1 , FET 2 ) comprising at least one control means (G 1 , G 2 ) for adjusting the conductivity of said at least one switch (FET 1 ,...
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7016174 |
Instantaneous fault detection circuit method and apparatus
An algorithmic system for an electronic trip unit is provided whereby reliable instantaneous protection is provided. A multi-algorithmic approach uses an algorithm to detect bolted faults based on...
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6985343 |
Programmable power management switch
A power management switch arrangement can be programmed by an external switch controller to alter the operating parameter limits used for fault detection. The switch arrangement includes the...
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6952356 |
Adaptive over-current detection
Disclosed are methods and apparatus for over-current detection in PWM power stages. Disclosed methods and apparatus provide over-current detection with adaptive filtering according to the pulse...
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6909586 |
Circuit breaker voltage sensing module
A combined current and voltage sensor includes: a combined sensor shell; a current sensor located in the combined sensor shell, the current sensor disposed proximate to said first load strap; and a...
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6836396 |
World wide web enabled and digital rating plug
Improvements to a rating plug for an electronic trip unit of a circuit breaker are disclosed. The rating plug includes a non-volatile memory which has access to current and frame rating...
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6828915 |
Circuit board fault warning system
A fault warning system controls light sources and a warning signal to provide an indication of fatal and non-fatal faults in a communication system. The circuitry uses a pull-down circuit in...
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6804101 |
Digital rating plug for electronic trip unit in circuit breakers
A method and apparatus for rejection of an inappropriate rating plug in an electronic trip unit for a circuit breaker including: a microprocessor programmed to determine an overcurrent condition of...
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6794775 |
Sensorless stall detection for motors
Motor stall can be detected without the use of additional sensors in a hybrid stepper motor through the detection of a harmonic component an associated motor spectrum. The associate motor spectrum...
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6789001 |
Digital multifunction relay
A digital multifunction relay, for controlling one or more protection devices of an power distribution network from fault events, which comprises a digital signal processor for executing a set of...
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6778369 |
Electric distribution device, installation comprising such a device, and electrical protection process
An electrical distribution device having a main part including a main breaking device, at least one secondary part having at least one secondary breaking device, and an electrical power...
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6738269 |
Line linkage protective device for electricity generation equipment
A device includes a governor for controlling the frequency of the generator of a private power generation equipment, function generating means having a function characteristic for detecting the...
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6734380 |
Add-on unit for contactor-circuit breaker
An add-on unit for coupling to a main electrical appliance with separable power contacts, including a housing having a front face and a rear face, and for mounting frontally against or into such...
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6731487 |
Method and devices for optimizing power consumption of trip units containing microprocessors
A method is provided for optimizing the power consumption of a trip unit. The method comprises sensing a first output from a power system, the first output including a first current and a...
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6724593 |
Reverse charger protection
A method and apparatus is provided for protecting voltage regulation circuits and battery cells (“cell”) when a cell is reverse-coupled to a charger. When a charger is reverse-coupled to the...
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6697245 |
Electronic load for the testing of electrochemical energy conversion devices
In a load for testing an energy production device, such as a fuel cell, a technique is provided for sensing one or more operational parameters for each of a plurality field effect transistors....
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6683769 |
Protective relay apparatus
Compatibility with a current transformer having several kinds of rated current ratios is achieved by finding out a formula of relationship between errors arising in a transformer input circuit and...
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6671151 |
Network protector relay and method of controlling a circuit breaker employing two trip characteristics
A network protector relay controls a circuit breaker connected between polyphase feeder and network busses. A circuit samples polyphase circuit breaker current and network voltage to generate...
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6661632 |
Data acquisition system for a circuit breaker
A circuit breaker system 10 (FIG. 1 ) using electronic trip units 35 is disclosed. The electronic trip units 35 are coupled to a communications bus 30 whereby the electronic trip units 35...
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6618232 |
Power lock device safe power source output/input
A power lock device for safe power output/input is a control lock composed of coding devices, decoding devices and electromagnetic switches. The coded signal will attach to the power transmitting...
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6597999 |
Method and system for real-time prediction of zero crossings of fault currents
A method for predicting zero crossings of fault currents in a multi-phase power system includes sensing a fault current in each respective phase, estimating parameters of a model of each respective...
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6590757 |
Method and apparatus for detecting and suppressing a parallel arc fault
Electrical equipment ( 14 ) is safeguarded from damage due to parallel arc faults by a circuit that provides several levels of protection. A semiconductor switch ( 18 ) and a current sensor ( 24 )...
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6567256 |
Dual protective relay for power systems
The relay obtains three-phase current signals from two power line sources thereof, typically two independent feeder lines. The two sets of signals are processed by a single processing means, which...
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6563685 |
Thermal protection relay
The thermal protection relay determines a value representative of the thermal image of an apparatus to be protected according to a measured current value, to a previous value of the thermal image...
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6560084 |
Circuit breaker having programmable amplifier
A circuit breaker ( 10 ) (FIG. 1 ) has a power line ( 12 ) for carrying a power signal from a source to a load and a current transformer ( 14, 16, 18, 20 ) configured to sense the power signal and...
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6552884 |
Circuit breaker with display function
A circuit breaker which displays electronically state of the circuit breaker and the cause of the disconnection which enables users to determine whether to reconnect a conductor which connects a...
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6541981 |
Automation of transmission line pulse testing of electrostatic discharge devices
A method and apparatus for automated testing of a plurality of electrostatic discharge (ESD) devices on a wafer. The wafer has M padsets and N conductive pads on each padset, where m is at least 1,...
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6512380 |
Contactor and trip circuit therefor
A contactor includes a switching circuit for switching a load between one or more electrical supplies, a current detector for detecting the current flowing through the load, a trip circuit for...
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6504694 |
Circuit breaker system with ASM instantaneous overcurrent indication
A circuit breaker system ( 100 ) providing application specific module (ASM) instantaneous overcurrent indication is disclosed herein (FIG. 5 ). A trip unit ( 110 ) included in the circuit breaker...
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