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US20130106424 QUICK REFERENCE RELAY DIAGNOSTIC CIRCUIT  
The present invention allows a technician a quick reference diagnostics of an automotive individual electrical circuit by replacement of the OEM relay with a diagnostics relay incorporating a...
US20130278269 Method for Predicting the Usability of a Relay or a Contactor  
A method for predicting the usability of a relay or a contactor is described herein. A current flowing through the relay or the contactor and/or a voltage applied to the relay or the contactor is...
US20140354287 APPARATUS FOR TESTING AN ELECTROMECHANICAL RELAY  
A portable apparatus for testing an electromechanical relay having Normally Closed (NC) contacts, Normally Open (NO) contacts, and an electromagnetic coil therein includes a housing, a battery, a...
US20130257440 Relay Welding Detector of Battery System and Battery System Which Uses the Detector  
Provided is a battery system which can ensure high safety even when the battery system is constructed using a mechanical relay. The battery system includes: a battery module where a plurality of...
US20150241500 DEVICE FOR DETECTING WELDING OF RELAY  
In the present invention, the connection between an external power supply and a unit for detecting welding of a relay is disestablished at least when a short circuit is detected, thereby...
US20130093427 WELDED CONTACTOR CHECKING SYSTEMS AND METHODS  
A system includes a plurality of batteries, first and second relays, a relay control module, and a welding indication module. The batteries are electrically connected and collectively output power...
US20110254557 ELECTROMECHANICAL RELAYS INCLUDING EMBEDDED SENSORS  
An electromechanical protective relay includes a base and an electromechanical coil supported on the base. The relay also includes a load sensor electrically coupled to the electromechanical coil...
US20140292343 ELECTROMAGNETIC RELAY  
An electromagnetic relay, includes: a housing; a contact member housed in the housing; a wiring that is housed in the housing, and is connected to the contact member; a measurement unit that is...
US20110316544 RELAY TEST SYSTEM AND METHOD  
A method of testing a relay set which includes mapping a relay set to an undirected graph indicative of a topology of the relay set and includes vertices indicative of channels of the relay set...
US20140021958 SOLENOID TRANSIENT VARIABLE RESISTANCE FEEDBACK FOR EFFECTER POSITION DETECTION  
Feedback from a solenoid is achieved by adding at least one variable resistance in parallel with the solenoid current feedback circuit for position detection. The resistance has current flowing...
US20130027046 METHOD AND DEVICE FOR TESTING SOLENOID VALVES  
A device for testing a solenoid valve includes: a voltage generator for applying a short pulse of voltage, which is not long enough to open the solenoid valve, to the windings of the solenoid...
US20150054516 RELAY WELD DIAGNOSTIC DEVICE  
In relay weld diagnostic device, a threshold value determination unit (104) determines a threshold value on the basis of a resistance value that is set for each of a P-pole-side resistor (24) and...
US20140002093 RELAY CONTACT MONITORING AND CONTROL  
A method for determining an actuation delay time for an electromechanical relay includes capturing a current waveform of an energized coil, determining a time at which the actuation component...
US20150035539 POWER CIRCUIT ABNORMALITY DETECTION METHOD  
A power circuit abnormality detection method for a power circuit detects whether an abnormality in a power source relay exists. The power circuit includes a pre-charge circuit opening and closing...
US20140299675 SMART SOLENOID COMPOUND GUN DRIVER AND AUTOMATIC CALIBRATION METHOD  
A device for calibrating a spray gun and an associated method are provided. The spray gun has a nozzle that is opened and closed by moving an internal needle out of and into sealing engagement...
US20130270901 Method and Arrangement for Diagnosing Drivers of Contactors, Battery, and Motor Vehicle having such a Battery  
The disclosure relates to a method and an arrangement for diagnosing drivers of contactors, to a battery, and to a motor vehicle having such a battery. According to the method, information...
US20130082713 WIND ENERGY INSTALLATION AND METHOD FOR TESTING A ROTATIONAL SPEED RELAY OF A WIND ENERGY INSTALLATION  
The disclosure relates to checking a rotational speed relay of a wind turbine. The wind turbine comprises a rotational speed sensor for the rotational speed of a shaft. The rotational speed sensor...
US20090107682 Monitoring A Solenoid of A Directional Control Valve  
A method of monitoring a solenoid (1) of a directional control valve (DCV) associated with a subsea control module (6) in a subsea hydrocarbon production system is disclosed. A voltage is applied...
US20150146333 RELAY WELDING DETECTOR, RELAY EQUIPMENT INCORPORATING THE SAME, AND RELAY WELDING DETECTING METHOD  
A relay welding detector is adapted for detecting welding fault of a relay. The relay has a first electrical contact coupled to a neutral terminal of an alternating current (AC) power source...
US20150115966 EVSE WELDED CONTACTOR DETECTOR  
In at least one embodiment, provided is an electric vehicle supply equipment having a line power contactor including a first line power input and a second line power input and a first line power...
US20080116896 UNIVERSAL VOLTAGE MONITORING AND SWITCHING DEVICE  
A monitoring and switching device for use with a towed vehicle includes a relay circuit that has a pair of terminals that are adapted to be connected with another circuit. A detection circuit is...
US20140002091 CONSTRUCTION MACHINE  
An electric operating system for a construction machine includes a first insulation resistance degradation detection device including a first voltage waveform generation device and a first...
US20150054517 DIAGNOSIS APPARATUS AND DIAGNOSIS METHOD FOR RELAY CIRCUIT  
An example of a relay circuit includes: a capacitor connecting both ends of a load circuit; first and second main relays disposed in power supply lines between a direct-current power supply and...
US20090009175 CURRENT-MEASURING CLAMP ON SENSOR IN ELECTROMECHANICAL RELAYS  
This invention relates to the system that detects the origin of relay or relays where failures are seen in electromechanical relays, and ensuring the repair of failure at the shortest time. System...
US20150191088 METHOD AND SYSTEM FOR CONTACTOR WELD DETECTION  
An example contactor weld detection method for an electric vehicle includes detecting that a contactor is welded closed when the contactor is commanded closed.
US20050275405 Switching matrix apparatus for semiconductor characteristic measurement apparatus  
A switching matrix apparatus includes relay switches for opening/closing the electrical connections between input lines and output lines and an LED matrix in which LEDs are arranged in a matrix so...
US20140002092 ELECTROMAGNETIC OPENING/CLOSING DEVICE  
An electromagnetic opening/closing device comprises: a measurement part that measure a change associated with opening/closing of a contact (the number of times the contact has been opened or...
US20130106423 MAIN RELAY MONITORING DEVICE AND METHOD FOR GREEN VEHICLE  
Disclosed is a main relay monitoring system and method for a green vehicle, where a main relay is installed between a high voltage battery and an inverter in order to diagnose whether the main...
US20140333311 RELAY DETECTION APPARATUS AND METHOD OF OPERATING THE SAME  
A relay detection apparatus includes at least one relay, a voltage detection module, and a voltage comparison unit. The relay has an input contact, an output normally-open contact, and an output...
US20120212230 TESTING A SOLENOID OF A DIRECTIONAL CONTROL VALVE  
A method of testing a solenoid of a directional control valve in a subsea hydrocarbon production system, the solenoid having a coil and an armature for operating the valve and the coil being...
US20140009162 System and Method for Testing a Circuit  
In an embodiment, a device comprises a circuit with at least one circuit element; measurement circuitry capable to test a state of the at least one circuit element during an operation of the...
US20150137819 System and Method for Monitoring Relay Contacts  
A system and method are disclosed for monitoring at least one relay contact. The system may include an emitter adapted for communication with a relay contact and configured to emit a signal, and a...
US20130119782 ELECTRIC POWER SOURCE CIRCUIT AND ABNORMALITY DIAGNOSIS SYSTEM  
A control unit for a rotary electric machine includes a first current command module, a second current command module, a change module, and a return module. The first module performs a first...
US20140340090 METHOD FOR SENSING WELDED CONTACTS ON A SWITCHING DEVICE  
A method for sensing a welded relay contact when breaking both sides of a power line on a HVAC device including the steps: applying a first signal to one of a pair of switching devices;...
US20140300481 RELAY FAILURE DETECTION SYSTEM  
A relay fault detection and correction system includes a signal detector structured to measure primary and secondary signals, and generates a fault output signal if the signals appear to be...
US20150219720 Relay Control System and Method for Controlling Same  
The present invention relates to a relay control system and a control method thereof, and more particularly, to a relay control system and a control method thereof capable of determining whether...
US20130314012 APPARATUS FOR DIAGNOSING RELAY CONTACT OF ELECTRIC VEHICLE AND METHOD THEREOF  
Disclosed are an apparatus for diagnosing a relay contact of an electric vehicle and a method thereof. The method includes measuring a first voltage input from a high-voltage battery to an...
US20120035801 DIAGNOSTIC METHOD AND APPARATUS FOR ELECTRIC POWER STEERING SYSTEM  
A method and apparatus diagnoses a correct operation of a phase or star point isolation relay in an electric power steering system of the kind including a motor drive circuit and at least one...
US20070139047 Method of controlling the operation of a solenoid  
A method for controlling the operation of a solenoid (14), in which solenoid the movement of the plunger is caused by bringing electric energy to the solenoid, whereby an electric current flows...
US20100066376 METHOD FOR TESTING A PROTECTIVE DEVICE, A PROTECTIVE DEVICE, AND TEST DEVICE  
A method for testing a protective device as well as a correspondingly configured protective device and test device are provided.
US20100060287 Recording Device for Recording the Switch State of an Electromagnetic Switch Device  
A recording device is for recording the switch state of an electromagnetic switch device. In at least one embodiment, the recording device includes a housing, in which a plunger is movably...
US20130300422 METHOD FOR OPERATING A MAGNETIC SWITCHING ELEMENT  
In a method for operating a magnetic switching element, at least one connection of at least one sensor device is connected to at least one connection of a coil of the magnetic switching element,...
US20140184232 TESTER FOR LIGHTNING ARRESTERS COUNTER  
The designed circuit is used for testing all kinds of discharge counter for lightning arresters. Discharge counter for lightning arresters are used in substation and all power plants with various...
US20150115967 ELECTRIC SWITCH  
The invention relates to an electric switch, in particular a rocker switch, comprising a contact system and comprising a movable actuating element for switching over the contact system between two...
US20110012603 PROTECTIVE RELAY MONITORING SYSTEM AND METHOD OF COMPARING BEHAVIOR PATTERNS  
A system for collecting data and monitoring the operation of electrical circuits, such as branch circuits at a substation is provided. The system collects data from a plurality of sensors coupled...
US20170168115 RELAY ABNORMALITY DETECTION DEVICE AND POWER CONDITIONER  
A relay abnormality detection device to detect an abnormality of a grid interconnection relay upon switching to grid independent operation and includes an abnormality detector to execute...
US20170146601 METHOD AND SYSTEM FOR VERIFICATION OF CONTACT OPERATION  
A system for verifying operation of a contact includes a voltage source connected to a first terminal of the contact through a first switch; a second switch connected to a second terminal of the...
US20170089982 SYSTEM AND METHOD FOR DETECTING FUSION OF RELAY OF BATTERY  
A system and method for detecting a fusion of a relay of a battery is provided. The method includes detecting the fusion of the relay during disengagement of an ignition of a vehicle and...
US20170016959 MONITORING SYSTEM FOR DETECTING OCCURRENCE OF LEAKAGE CURRENT AND/OR RELAY SHORT-CIRCUIT CONDITION IN AN ELECTRICAL SYSTEM  
A monitoring system is applied to an electrical system, which includes a DC power source and an electrical apparatus that is connected to the DC power source by a pair of electric power leads...
US20160358732 ABNORMALITY DETECTION METHOD FOR ELECTROMAGNETIC RELAY, ABNORMALITY DETECTION CIRCUIT FOR ELECTROMAGNETIC RELAY, AND ABNORMALITY DETECTION SYSTEM  
An abnormal operation of a movable contact is correctly detected. The abnormal operation of the movable contact (9) to the fixed contact (10) is detected based on at least one of a separation...

Matches 1 - 50 out of 65 1 2 >