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7616419 |
Switchgear control apparatus
A switchgear control apparatus includes a zero point interval detecting circuit, an interruption time judgment circuit and a reclosing time decision circuit. The zero point interval detecting...
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7605352 |
Method for sorting positive temperature coefficient (PTC) elements
In a method for sorting PTC elements having different resistance-temperature characteristics, a predetermined voltage that allows a current to sufficiently decay is applied to each of PTC elements...
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7589946 |
Local access port communications using near field induction
A method for accessing an electronic circuit in an enclosure using near field induction is disclosed. The method involves attaching at least one local access port connector with an external...
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7580773 |
Handling robot system
A handling robot system, including a table having a placement surface for placing articles; an article dispersing mechanism for dispersing the articles placed on the placement surface of the table...
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7545245 |
Manual opening device and electrical switching apparatus employing the same
A manual opening device is for an electrical switching apparatus, such as a synchronous circuit breaker, including a housing having an opening, a plurality of pole mechanisms each comprising...
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7525780 |
Liquid crystal television and backlight power supplying circuit
Disclosed is an inverter-circuit power supply circuit capable of redriving an inverter circuit upon temporary blackout without turning on a main power again An inverter-circuit power supply circuit...
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7489491 |
Method and apparatus for fault condition protection of a switched mode power supply
Methods and apparatuses for fault condition protection of a switched mode power supply. In one aspect of the invention, a power supply circuit having an auto-restart function to turn the power...
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7403837 |
Portable device used to at least visualize the process data of a machine, a robot or a technical process
A portable device ( 1 ) with at least one optical output device ( 2 ) for displaying at least process data of a machine, a robot or a technical process, with at least one input device ( 3 ) for at...
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7403130 |
Removing an automatic circuit recloser from service prior to battery failure
An automatic circuit recloser is automatically removed from service prior to battery failure. Logic implemented on the automatic circuit recloser is used to determine whether a battery of the...
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7336461 |
Method for determining the moment of closure of a circuit breaker on a high voltage line
A method for determining the reclose time of a circuit breaker on a three-phase high-voltage electric network after separation of contacts 7 A, 8 A, 7 B, 8 B, 7 C, 8 C in the presence of a...
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7291940 |
Pressure sensitive switches including touch sensor structures
An electronic circuit for use with an exhaustible power source and at least one load such as a light bulb, a radio or motor, includes a microchip with an input that transmits a signal to the...
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7119459 |
Intelligent switch for connecting power to a load
A switching circuit includes a microchip which, in response to a signal from a signal switch, controls the operation of a power switch which, when closed, connects a load to a battery. The...
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7110231 |
Adaptive protection system for a power-distribution network
A preferred embodiment of a system comprises a recloser electrically coupled to a voltage source of a power-distribution network and adapted to isolate a section of a distribution feeder of the...
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7050866 |
Dynamic controller for controlling a system
A method for providing independent static and dynamic models in a prediction, control and optimization environment utilizes an independent static model ( 20 ) and an independent dynamic model ( 22...
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7049696 |
IC package with electrically conductive heat-radiating mechanism, connection structure and electronic device
A connection structure including an IC chip, a substrate disposed with a conductive layer, and a heat-radiating mechanism that is mounted on the substrate, disposed between the IC chip and the...
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6933678 |
Emergency lighting function illumination appliance
An emergency lighting function illumination appliance comprised of a fluorescent lamp tube, a controller, a mains power circuit capable of processing mains electric power for lighting, and a backup...
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6917856 |
Robot
It is constructed so as to detect a joint movement position of a robot arm by a position detector and a joint movement speed is calculated from change amounts of the joint movement position and...
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6867958 |
Loop restoration scheme for distribution feeders
A system and methods that enable a restoration scheme for power distribution systems that is independent of power distribution system component configuration, the number of power distribution...
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6850395 |
System and method for automatic re-closure and re-closing device
The invention relates to a method for automatically re-closing when there is a short-circuit in a line section of an electric energy supply line, whereby said section is defined by one switch...
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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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6778370 |
Adaptive recloser/sectionalizer
A recloser is monitored and adaptively controlled so that it will operate in a manner responsive to prevailing conditions as either a recloser or as a sectionalizer. The prevailing conditions that...
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6768620 |
Adaptive reclosing method using variable dead time control algorithm in power transmission line
Disclosed in an adaptive reclosing method using a variable dead time control algorithm in a power transmission line. The method is used to remove faults induced by a circuit breaker being operated...
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6735534 |
One or all phases recloser control
A recloser trips on one phase for single-phase only fault conditions, or all phases for multi-phase fault conditions. During power delivery, the recloser monitors the three phases of a power line...
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6735533 |
Only picked up phases recloser control
A recloser trips on one phase for single-phase only fault conditions, two phases for two-phase fault conditions, or all three phases for three-phase fault conditions. During power delivery, the...
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6707655 |
Adaptive protection for recloser control
A recloser is adaptively controlled so that it will operate in a manner responsive to prevailing conditions such as time of day, day of week, and/or load current. A protection setting group is...
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6687573 |
Recloser and fuse coordination scheme
An automatic power restoration device has a modifiable end point. The end point is indicative of the operational parameters of the automatic power restoration device. A user can modify the end...
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6667866 |
Virtual ground following single-phase trip
A three phase trip of a power line is prevented in a power distribution network delivering electrical power through multiple current carrying conductors and a neutral/ground line. The three phase...
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6577963 |
Programmatic resetting of circuit breakers
In a system, method and program for monitoring and control of a circuit having a circuit breaker, circuit profile information characterizing the circuit is used to determine a reset strategy for...
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6539287 |
Distribution control system capable of isolating fault section without using time limited sequential shift function
A distribution control system includes in each of feeder terminal units a controller that updates a value in a latest current value storage area of a memory, every time a current value is detected...
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6385023 |
Reclosing apparatus for auxiliary systems
A reclosing apparatus for the auxiliary systems of a plant, in particular a power station, has drive modules ( 81 ) for actuating electrical drives ( 23 a , 23 b , 33, 53 a , 53 b , 63, 73 ) of the...
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6356806 |
Method for handling a voltage drop in the control of a robot and for restarting a robot following a voltage drop
A method for handling the voltage drop, at least in the control unit of a robot with a PC control is provided that minimizes the time of a plant stoppage and avoids wasteful process interruptions....
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6239960 |
Reconfigurable reclosing relay
A reclosing relay is provided with switch settings and microprocessor control to permit emulation of a variety of different styles of motor-driven reclosing relays in power distribution systems....
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6201676 |
Time delay device
A hydraulic time delay device couples to a fault-sensing element in a circuit recloser. The time delay device includes a piston that has an external connection and is operable to move through a...
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6198401 |
Detection of sub-cycle, self-clearing faults
An apparatus which detects self-clearing faults in an AC power circuit carrying an electrical current is provided. To this end, the apparatus includes a fast element which detects an occurrence of...
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6147616 |
Automatic power interruption and re-supply relay for an electric power line
The present invention provides a digital automatic power interruption and re-supply relay for performing detection and comparing operation to inform a state of an accident with voice and numerals...
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6144160 |
Lamp with a temperature-controlled automatically protecting circuit
A lamp with a temperature-controlled automatically protecting circuit which includes a temperature induction circuit and a sampling circuit with its input end to connect with an output end of the...
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6115225 |
Power supply system
There is provided a power supply system which is capable of eliminating inconvenience affecting a storage device in the event of a power failure. Monitoring control means monitors supply voltage...
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6025657 |
Power operator for switchgear with manual features
A power operator for switchgear and the like is provided that is capable of either power or manual operation without the necessity of any decoupling or mode selection. The power operator is compact...
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6023402 |
Software controlled fan with hardware fail-safe restart
A control circuit for the regulation of fan speed control in a computer power supply with software controlled shutdown and automatic restart for over-temperature protection. The control circuit...
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6018300 |
Fault monitoring
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6008971 |
Fault protection arrangement for electric power distribution systems
A fault protection arrangement for electric power distribution systems includes a plurality of power sources connected to a distribution bus through circuit breakers and a plurality of loads...
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5999392 |
Reset circuit with transient detection function
The invention relates to an automatic reset circuit for detecting much faster transient voltage variation between the supply voltage (VDD) and the electric ground (GND) of an electric system with...
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5978195 |
Circuit protection arrangement
A fault protection arrangement for protecting power conversion circuits, for example switch mode power supplies and the like, from overcurrent and short circuit faults. The fault protection...
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5946172 |
Installation for power transmission by means of high-voltage direct current, comprising device for detection of a permanent ground fault
An installation for power transmission by high-voltage direct current has at least two converter stations which are interconnected by a dc line (DC), at least one station (SR1) having a line...
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5896302 |
System and method for providing integrated reclosing of circuit breakers in a power substation
The present invention provides a system and method for integrated reclosing of circuit breakers in a power substation by providing a programmable controller which is programmed to detect the...
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5896258 |
Oil circuit recloser operator
A circuit recloser that limits current through a power line when a fault condition occurs. The recloser includes a circuit interrupter that is switchable between a closed state, in which current is...
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5841618 |
Power-line trip circuit
A power-line trip circuit models the transient characteristic of a change in load (e.g. appearance of a fault current, or switch-on to a normal load) and compares the current actually flowing in...
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5805400 |
Auto-reclosing dead time control apparatus and method thereof for transmission cable protection relay system
An improved auto-reclosing dead time control apparatus and a method thereof for a transmission cable protection relay system which is capable of providing an on-line stability evaluation method...
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5801913 |
Isolation circuitry
Isolation circuitry for automatically disconnecting a load from a source upon detecting a short and for automatically reconnecting the load to the source after the short circuit clears. The...
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5784239 |
Drive to last reclosure operation in a protective relaying system
A reclosing relay in accordance with the disclosed invention comprises a reclose initiate (RI) input and a drive to last reclosure (DTLR) input, and an output at which a close signal is provided to...
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