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7633399 |
Configurable arc fault or ground fault circuit interrupter and method
An arc fault and/or ground fault circuit interrupter includes an operating mechanism structured to open and close separable contacts, a trip mechanism cooperating with the operating mechanism to...
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7605711 |
Communication anomaly detecting device, and passenger detecting device
An information request portion receives an information request signal transmitted to an information response portion at its own receiving port. The information request portion comprises at least...
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7605712 |
Power generator and power generator auxiliary monitoring
A generator monitoring system and method includes a plurality of sensors ( 12 ) disposed within a generator enclosure ( 18 ) to sense health conditions of a generator ( 10 ) housed within the...
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7577535 |
System and method for locating and analyzing arcing phenomena
System and method for detecting partial discharge arcing phenomena in a power network distribution system which employs a mobile receiving assemblage including a wideband antenna, a computer...
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7573393 |
Integrated fault output/fault response delay circuit
A time delay fault device includes an integrated circuit (IC) having an electronic circuit having a fault indicator signal output and a time delay circuit having an input connected to the fault...
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7557723 |
System and method for evaluating ground-fault circuit interrupters
A system for evaluating at least one tripping stimulus for a ground-fault circuit interrupter includes: a sensing circuit configured to measure a leakage current from a voltage line to ground,...
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7557724 |
Device for detecting a fault current in an electronic apparatus
A device for detecting a fault current in an electronic apparatus has a first and at least one second electric conductor, the first electric conductor carrying a first electric potential and the at...
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7535371 |
Ground fault circuit interrupter with end-of-life protection
A circuit interrupter with end-of-life protection has four components: 1) a control circuit to activate an electromagnetic unit upon detecting a predetermined condition; 2) a fuse coupled between...
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7443309 |
Self testing ground fault circuit interrupter (GFCI)
A self testing fault detector having a line side and a load side and a conductive path there between, said apparatus is provided. The self testing fault detector includes a controller, adapted to...
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7439874 |
Load status indicator
A load status indicator is disclosed for determining whether power is available to, and current is flowing through, a load. A first visual status indicator may light up when power is available to...
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7436313 |
Penetration screen
A penetration screen is disclosed which comprises a substantially planar substrate with, at least, one electrical circuit disposed thereon. The electrical circuit is configured such that, at least,...
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7403106 |
Seatbelt apparatus
The disclosed detection circuit for a seatbelt apparatus may include an attachment detection switch, first and second resistance elements, and an LED. The resistance value of the first resistance...
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7397385 |
Predicting cable failure through remote failure detection of error signatures
Computer systems and techniques for predicting a cable failure in a network system begin by receiving a remote alarm indicator followed by a remote alarm indicator clear as a transmission alarm...
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7382272 |
System, a tool and method for communicating with a faulted circuit indicator using a remote display
Provided is a system, a tool and a method for communicating with a faulted circuit indicator (FCI), the faulted circuit indicator including a detection circuit for monitoring an electrical...
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7327275 |
Bathing system controller having abnormal operational condition identification capabilities
A controller suitable for identifying an abnormal operational condition in a bathing system is provided. The controller includes a memory unit adapted for storing measurements indicative of...
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7312715 |
Management of large scale cabling systems
Method and system for managing cabling rooms that include a plurality of communication panels, which are arranged closely to one another. Each cabling room has a plurality of patch panels,...
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7283055 |
Electrified cover safeguard
A warning device that turns on a warning light and or a warning sound to indicate when a manhole cover or a service box cover or a metal pole for lights, traffic lights, transformers or others has...
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7151462 |
Circuit arrangement and method for load diagnosis of a semiconductor switch
The present invention relates to a circuit arrangement and a method for load diagnosis of a switch having a first and a second load connecting terminal. A first and a second current source...
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7142402 |
Wiring error detection circuit
A wiring error detection circuit for providing the status of the wiring of an AC outlet and the status of the AC outlet's ground connection.
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7118380 |
Connector arrangement in wrist strap monitors
A connector assembly for a wriststrap jack is provided wherein the jack may be easily replaced in accordance with the invention.
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7116239 |
Current sense components failure detection in a multi-phase power system
An evaluator ( 210 ) having an input ( 207 ) for receiving a signal indicative of a channel current sensed via a sensor in a mutlichannel current sharing system, and circuitry ( 313, 319 ) coupled...
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7113882 |
Automatic testing system
An automatic testing system. A sampling and converting device obtains a plurality of electronic parameters from a tested device and transforms them into a plurality of digital signals. A...
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7091871 |
Electrical hazard detection system
An electrical hazard detection system is used to detect energized ground terminals on electric receptacles. This condition may not be detectable by traditional circuit testers when hot and neutral...
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7046157 |
Short circuit detector for shield conductor in a fieldbus network
A short circuit detector for a fieldbus network which includes power/data wires that are typically positive and negative, respectively, and a shield conductor connected to a ground includes first...
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7030769 |
Monitor providing cause of trip indication and circuit breaker incorporating the same
A circuit breaker with a thermal/magnetic trip device incorporates a monitor that senses the temperature of the bimetal and the amplitude of the load current to distinguish between a thermal and a...
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7023353 |
Warning device status circuit including a status output device
A warning device including a status and function indicator circuit for indicating the status and function of the warning device. In a visual warning device such as a strobe light, the status and...
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6979787 |
Article for de-energizing a branch electrical circuit, and related processes
A device for de-energizing an energized branch electrical circuit is described, as well as related processes. The device includes a circuit breaker, which itself includes a breaker switch, an input...
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6967487 |
Distributed diode fault check
A method and apparatus for testing for latent faults in the isolation devices of a system including redundant power supplies which supply power to one or more system units. A system controller is...
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6958699 |
Signal-disruption detection in powered networking systems
Detecting a signal disruption of an AC-signal by a DC-current in a powered networking system includes receiving an AC-signal from the networking system; analyzing the AC-signal based on a...
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6930612 |
Device and method of monitoring grounding of personnel and equipment in ESD-sensitive areas
A method and apparatus for monitoring grounding of personnel and equipment in electrostatic discharge (ESD) sensitive areas. The device generates a low voltage alternating current control signal (...
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6924740 |
Electrical resistance monitoring device
A device for indicating whether a conductive element has an electrical resistance equal to or less than a predetermined value or whether the conductive element is reliably connected to earth...
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6847297 |
Locator devices and methods for centrally controlled power distribution systems
A data sample and transmission module for a power distribution system having a microprocessor, a locator device, and a network interface is provided. The microprocessor samples one or more first...
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6826490 |
Transducer calibration system: apparatus and method
A transducer calibration apparatus and method for transforming both previously established transducer parameters for a transducer calibrated to a first target object material and measured...
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6731217 |
Electrical circuit tester
An electrical circuit tester for allowing a user to efficiently test electrical fixtures and switches. The electrical circuit tester includes a housing that has a plurality of prongs that extend...
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6721671 |
Directional element to determine faults on ungrounded power systems
The directional element, following enablement under selected input current conditions, calculates a zero sequence impedance, in response to values of zero sequence voltage and zero sequence...
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6611406 |
Ground fault circuit interrupter incorporating miswiring prevention circuitry
A ground fault circuit interrupter (GFCI) with built in intelligence is described that includes circuitry to automatically indicate a device miswiring condition. When a GFCI is wired with its AC...
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6606028 |
Apparatus and method for supervision
A supervisable multi-processor communication system includes circuitry and executable instructions for evaluating the communication capability of a plurality of branches in the system. Branches...
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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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6483435 |
Method and device of fault location for distribution networks
The present invention relates to a method for location of a fault which has occurred on one of a plurality of lines in a power distribution network where the location is performed with the measured...
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6480771 |
Apparatus for determining a failure of wheel speed sensors
An apparatus for determining a failure of wheel speed sensors, which is capable of properly determining whether or not a wheel speed detection system including the wheel speed sensors has failed,...
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6473281 |
Automatic protection device with ground fault annunciation
A trip unit, such as one comprising a current sensor generating a current signal indicative of current in a power circuit, an analog to digital converter converting said signal into digital form,...
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6437700 |
Ground fault circuit interrupter
A signaling system employing indicator lamp means and an audible alarm is employed to remind a user to periodically test his GFCIs and to provide information regarding the status of the GFCI. The...
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6437695 |
Method for capacitive object recognition in vehicles
In a method for capacitive object recognition in vehicles, two capacitive electrodes are charged with alternating voltage and the presence of an object is detected by the change in the capacitance...
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6368155 |
Intelligent sensing connectors
A connector that is particularly suitable for use in high speed data transmission is provided in the form of a plug connector that may be terminated to the end of a high speed cable. The connector...
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6366208 |
Diagnostic functions for power supply
A power supply circuit detects ground fault paths, and miswiring of the load, using a test mode in which electrical power is applied to only one power output terminal of the power supply relative...
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6353393 |
Switch status monitoring system
A switch status monitoring system ( 10 ) includes a switch signal processor ( 16 ) that operates in either of a supervised mode or an unsupervised mode for each monitored switch ( 12 ). Selection...
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6313639 |
Method and configuration for identifying short circuits in low-voltage networks
A method for identifying short circuits in a low-voltage network includes the step of determining a first envelope and a second envelope for a plurality of locus curves of a current steepness as a...
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6310557 |
Circuit and device to detect grounding problems in electrical soldering irons
A circuit and device to detect grounding problems in electrical soldering irons. The device includes a cleaning sponge in electrical connection with a sensor element. The sensor element is...
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6307476 |
Smart binary switch for use with an electronic patient monitor
This invention relates generally to monitoring systems and more particularly concerns devices and systems used to monitor bed patients in hospital or other care-giving environments. In accordance...
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6285292 |
Electronic trip device comprising an initialization device
The electronic trip device comprises a processing unit comprising protection means, and an initialization device of said processing unit. The initialization device comprises means for...
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