EP3360217A1 - Fault current protection device for monitoring an electric load for a vehicle, and method for carrying out a self-test of a fault current sensor - Google Patents
Fault current protection device for monitoring an electric load for a vehicle, and method for carrying out a self-test of a fault current sensorInfo
- Publication number
- EP3360217A1 EP3360217A1 EP16766518.1A EP16766518A EP3360217A1 EP 3360217 A1 EP3360217 A1 EP 3360217A1 EP 16766518 A EP16766518 A EP 16766518A EP 3360217 A1 EP3360217 A1 EP 3360217A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fault current
- electrical
- current sensor
- conductor
- current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—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
- H02H3/26—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
- H02H3/32—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 corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
- H02H3/33—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 corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers
- H02H3/334—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 corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers with means to produce an artificial unbalance for other protection or monitoring reasons or remote control
- H02H3/335—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 corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers with means to produce an artificial unbalance for other protection or monitoring reasons or remote control the main function being self testing of the device
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
- H02H1/0076—Details of emergency protective circuit arrangements concerning transmission of signals by superposition on the watched current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—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
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
- H02H3/044—Checking correct functioning of protective arrangements, e.g. by simulating a fault
Definitions
- the present invention relates to a fault current sensor for a residual current device for monitoring an electrical load for a vehicle, to a residual current device for monitoring an electrical consumer ⁇ chers for a vehicle, to a method for performing a self-test of a fault ⁇ current sensor for a residual current device for monitoring an electrical load for a vehicle and to a corresponding Computerprogrammpro ⁇ product.
- a fault current sensor can be equipped to control and return an error message in ⁇ example with additional control and signal lines.
- An initiation ⁇ tion of a self-test of a fault current sensor can in particular be done manually via a button or via a signal line.
- the test initiation via zusiger ⁇ Liche signal lines can be done.
- DE 10 2008 033 148 A1 relates to a residual current device and a procedural ⁇ ren to perform a self-test by a residual current device.
- the present invention provides a fault current sensor for a residual current device for monitoring a vehicle electrical load, a residual current device for monitoring a vehicle electrical load, a method for performing a self-test of a fault current sensor for a residual current device program product for monitoring an electrical load of a vehicle and to a corresponding Computerpro ⁇ presented according to the main claims.
- Advantageous embodiments emerge from the respective subclaims and the following description.
- a remote fault ⁇ lerstromsensor for a controller of an electrical consumer wherein, for example, power return lines can be used via grounded structures
- a test initiation tion over a transmitted on a Stromhin can be realized.
- the error current sensor may be configured to testify in response to the transmitted test signal on the tentatively Stromhintechnisch a fault current intentionally he ⁇ . This sample generated fault current can then be detected by the error ⁇ current sensor and reported via the current to the controller.
- a remote fault current sensor for example for a heater controller for use in aircraft or in a Schuercontrol ⁇ ler with remote fault current sensor for use in aircraft
- a circuit-based solution for monitoring an electrical load on an occurrence of a fault current under consideration or taking into account a current feedback via a grounded structure or via bus bars in addition to a circuit-based solution for monitoring an electrical load on an occurrence of a fault current under consideration or taking into account a current feedback via a grounded structure or via bus bars, a functional state and possibly a malfunction of the fault current sensor are detected.
- an Ini ⁇ ti ist a self-test of a remote leak sensor by means of data transmitted via a Stromhintechnisch signal in particular a modulation of the versor ⁇ supply voltage can be realized, so that no additional signals or control lines for triggering the self-test can.
- a test initiation in particular by means of supply voltage modulation
- a functional test of the fault current detection can be carried out.
- Such a test function can expand a range of functions of the controller to the monitoring of a fault current occurring in a direction Schlos ⁇ Senen load and functional testing of the deposed error ⁇ current sensors without additional wiring and interface costs he ⁇ possible.
- the proposed fault current sensor can represent a simple, robust and cost-effective circuit, which can be installed without additional wiring in front of a protected, ins ⁇ particular heated component and, for example, regularly checked for correct operation.
- residual current protection and self-test can be achieved while avoiding additional wiring effort, which can make possible, especially for aircraft, an advantageous weight saving in terms of economic considerations.
- a fault current sensor for a residual current device for monitoring an electrical load for a vehicle comprises the following features: an electrical circuit for detecting a test signal in an electrical forward conductor, which is controlled by a control device for controlling the electrical load to the represents electrical load passing conductor, wherein the test signal represents a request to perform a self-test of the fault current sensor; a fault current generating device for generating a test fault current in an electrical return conductor which leads away from the electrical load in response to the detected test signal; a measuring device for measuring a differential current between a first electrical current ⁇ rule in the electric forward conductor and a second electrical current in the electrical return conductor; and a signaling device for reporting at least the test fault current to the control device via the forward conductor depending on a comparison of the measured differential current with a threshold value.
- the residual current device can be referred to as a so-called Fl-switch or fault ⁇ current circuit breaker.
- the fault current sensor and the control device may be parts of the residual current device.
- the fault ⁇ current sensor, as well as the residual current protection device in particular in a power ⁇ vehicle, for example, in an aircraft used.
- the electrical Ver ⁇ consumers can be designed, for example, as a heater or other load.
- the fault current sensor may be electrically connected between the control device and the electrical load.
- the fault current protective device for example, formed of electrical consumers, or be laid ⁇ see also for monitoring a plurality.
- the fault current sensor may be at least the test leakage current in a self ⁇ test mode from a time of recognizing the Testsig ⁇ Nalles to a time of reporting.
- the test signal may thus represent a trigger in response to which the fault current sensor may perform the self-test.
- the electrical circuit may be configured to detect a modulation of an electrical voltage on the forward conductor from the control device as the test signal.
- the modulation may have a modulation pattern, and ⁇ additionally or alternatively, a different modulation characteristic, which is recognized as a test signal for the electrical circuit.
- the fault current generating device can have a fault current switch for switching an electrical resistance to generate fault current.
- the electrical resistance can be electrically conductively connected to the return conductor.
- the error current switch may be formed to connect in a closed circuit position ⁇ the electrical resistance electrically connected to the forward conductor.
- the fault current switch and the electrical resistance may be configured to generate the test fault current.
- the notification device may be configured to report the fault current and test zusharm ⁇ Lich or alternatively a caused by the electrical load error ⁇ current using a current amplitude modulation on the forward conductor to the control device.
- the measuring device can be designed to measure egg ⁇ NEN differential current, which is caused by the fault current test and additionally or alternatively an electrical load caused by the fault current.
- the measuring device may be configured to measure a differential current which is caused by an induced by the electrical ⁇ rule consumer fault current, wherein the signaling device may be adapted to the induced by the electrical load fault current to to report the forward conductor to the control device.
- the measuring device may be configured to measure a differential current which is caused by the test leakage current, wherein the notification device may be configured to report the test residual current in the go conductor to the Steuervorrich ⁇ processing.
- the signaling device can also have a switch for connecting a defined load.
- the defined load with the return conductor can be electrically conductive verbun ⁇ the.
- the switch can be designed to connect the defined load in an electrically closed manner to the forward conductor in a closed switching position.
- the load can remain switched on.
- a resulting sum current of a load current and ei ⁇ nem current of the load defined may be above a portion representing a versor ⁇ supply current range of the electrical consumer, and may be interpreted by the control device as the occurrence of a detected fault current.
- Such an embodiment has the advantage that a fault current case can be reported safely unkompli ⁇ ed and.
- the electrical circuit may be configured to perform the comparison of the measured differential current with the threshold.
- the electrical circuit may be additionally designed to perform additional functions for the fault current sensor.
- a residual current device for monitoring an electrical load for a vehicle, the residual current device having fol ⁇ ing features: an embodiment of the above-mentioned fault current sensor; and a control device for controlling the electrical load, wherein the Steuervor ⁇ direction and the fault current sensor are electrically conductively connected or connected at least by means of the Hinleiters.
- an embodiment of the above-mentioned residual current sensor can be advantageously used or used to detect a fault current with respect to the electrical load or to he ⁇ summarized and to enable a self-test of the fault current sensor.
- the tax advantage ⁇ direction can also be configured to break an electric current flow through the electric load in response to a reported error current to be ⁇ .
- the control device may be configured to transmit the test signal via the electrical forward conductor to the fault current sensor.
- the control device may be designed to moderate an electrical voltage of the electrical Hinleiters.
- the controller and the leak sensor may be housed separately vonei ⁇ Nander.
- the fault current sensor can be arranged outside a housing of the control device.
- a housing of the control device and a housing of the fault current sensor can be arranged separately from one another.
- the error rate sensor can one go conductor input terminal for connection to a control device-side portion of Hinleiters, a Hinleiter- output port for connection to a load-side section of the Hinleiters, a return conductor input terminal for connection to a load-side from ⁇ section of the return line and a return line-output terminal for Having connection to a structure-side portion of the return conductor.
- the control device side from the cut ⁇ Hinleiters represents a section of the Hinleiters, by means of which the fault current sensor and the control device be electrically conductively connected together or are connected.
- the consumer-side section of the Hinleiters represents a portion of the Hinleiters, by means of which the fault current sensor and the electrical load can be electrically connected or connected to each other.
- the consumer ⁇ cher nie portion of the return conductor represents a section of the return conductor, by means of which the fault current sensor and the electrical loads are electrically conductively connectable or connected to each other.
- the structure side portion of the remindlei ⁇ ters represents a section of the return conductor, by means of which the error ⁇ current sensor is connected via a structural element of the vehicle to the control device a binding ⁇ bar or connected.
- the error ⁇ current sensor can be arranged in a simple and inexpensive manner offset from the control device or can be.
- the control device-side section of the Hinleiters can be at least as long as the consumer-side section of the Hinleiters.
- the fault current sensor may be spaced a greater distance from the control device than from the electrical load.
- Such an embodiment has the advantage that a Feh ⁇ lerstrom can be determined safely and ver ⁇ brauchernah even with current feedback via a grounded vehicle structure.
- control device can have at least one output connection for connection to the control device-side section of the Hinleiters and an input connection for connection to another structure-side section of the return conductor.
- additional structure side portion and the structure side from ⁇ can cut of the return conductor via a structural element of the vehicle electrically conductive MITEI ⁇ Nander connectable or connected.
- the structural element can be grounded and be formed from an electrical material.
- the control device can also have further connections for connection to an electrical voltage source or current source.
- a method for performing a self-test of a fault current sensor for a residual current device for monitoring an electrical load for a vehicle, the method comprising the following steps:
- test signal Detecting a test signal in an electrical supply conductor leading to the electrical load hinlei ⁇ tet by a control device for controlling the electrical consumer, wherein the test signal represents a request for performing a self-test of the Def ⁇ lerstromsensors;
- the method may be advantageously carried out in conjunction with or using one embodiment of the above leakage current sensor or also an embodiment of the above-mentioned residual current protective device.
- a device is also presented, which is designed to carry out, control and / or implement the steps of a variant of a method presented here in corresponding devices. Also by this embodiment of the invention in
- the apparatus may be configured to read in input signals and determine and provide output signals using the input signals.
- Input signal can represent, for example, a readable via an input interface of the device sensor signal.
- An output signal may represent a control signal or a data signal that may be provided at an output interface of the device.
- the apparatus may be configured to determine the output signals using a processing instruction implemented in hardware or software.
- the device may alternatively comprise a logic circuit, an integrated circuit or a software module and for example be realized as a diskre ⁇ th component or be comprised of a discrete component.
- Another advantage is a computer program product or computer program with Pro ⁇ program code that can be stored on a machine-readable medium or storage medium such as a semiconductor memory, a hard disk memory or an optical memory. If the program product or program running on a computer or a device, the program product or program can tion for carrying, implementation and / or control of the steps of the method according to one of the embodiments described before ⁇ standing be used.
- Fig. 2 is a schematic representation of the heated component of Fig. 1;
- FIG. 3 is a schematic representation of a vehicle with a residual current device according to an embodiment
- FIG. 4 is a schematic representation of a residual current device according to egg ⁇ nem embodiment and an electrical load for a vehicle.
- FIG. 5 is a schematic representation of a fault current sensor for a residual current device according to an embodiment.
- FIG. 6 is a flowchart of a method according to an exemplary embodiment.
- Onboard electrical networks in particular in aircraft, for example, constructed such that a plurality of loads are supplied with a forward conductor and single-pole electrical connection and passed the Wegflie ⁇ sequent current through a structure or vehicle structure and thus, a separate return conductor for each load is saved.
- Fig. 1 shows a schematic diagram of a heater controller 100 and a heater controller 100 and a heated component 1 10.
- Heater controller 100 ⁇ the example in aircraft for monitoring and performance-related Ansteue- tion heated components 1 10, such as floor plates or water pipes, are used.
- An electrical connection between the heater controller 1 00 and the heated compo ⁇ nent 1 10 is carried out in aircraft usually unipolar via a forward conductor 1 20.
- a return of the electrical current from the heated component 1 10 to the Hei ⁇ zercontroller 100 is carried out by a structural connection 1 30th or connection via a structure. Alternatively, the return can also be done via manifolds.
- both the heater controller 100 and the heated component 1100 have at least one structure connection 130.
- FIG. 1 shows a schematic diagram of a heater controller 100 and a heater controller 100 and a heated component 1 10.
- Heater controller 100 ⁇ the example in aircraft for monitoring and performance-related Ansteue- tion heated components 1 10, such as floor plates or water pipes
- the heater controller 100 further includes supply terminals 140 for a supply voltage of the heater controller 100.
- the Bankercon ⁇ troller 1 00 includes a current sensor 150 and an output switch 1 60th
- the heated component 1 1 0 has a heater 170, which represents an electrical consumer regar ⁇ .
- FIG. 2 shows a schematic representation of the heated component 110 of FIG. 1.
- the forward conductor are shown in FIG. 2 1 and 20 from the heated component 1 10, the structural ⁇ turan-circuits 130, the heater 1 70 and a return line 280 and shown symbolically an error ⁇ current 290th
- the return conductor 280 extends from the heater 1 70 to one of the structural connections 130.
- FIG 3 shows a schematic representation of a vehicle 300 with a residual current device 310 according to one exemplary embodiment.
- the residual current device 31 0 is designed to monitor an electrical load of the vehicle 300 to a fault current.
- the residual current device 310 has a control device 320 and a fault current sensor 330 for this purpose.
- the vehicle 300 has the residual current device 310, an electrical load 340 and a grounded, electrically conductive structure 350 or a grounded, electrically conductive structural element 350 of the vehicle 300.
- the controller 320 of the residual current device 310 is configured to control the electrical load 340.
- the fault current sensor 330 is electrically connected between the control device 320 and the electrical load 340.
- the control device 320, the fault current sensor 330 and the electrical loads 340 are in accordance with the example shown in Fig. 3 embodiment by means of an electrical ⁇ rule Hinleiters and an electrical return conductor are electrically conductively verbun ⁇ .
- the electrical forward conductor has a control-device-side section 362 between the control device 320 and the fault current sensor 330 and a load-side section 364 between the fault current sensor 330 and the electrical load 340.
- the electrical return conductor comprises a load-side portion 372 between the electric load 340 and the error ⁇ current sensor 330, a structure-side portion 374 between the fault current sensor 330 and the vehicle structure 350, and another structure side portion 376 between the vehicle structure 350 and the controller 320.
- the fault current sensor 330 includes the fault current generator 332 and the electric circuit 334.
- the fault current sensor 330 is subsequently un ⁇ ter reference to Fig. 4 and Fig. 5 illustrates in more detail.
- the electrical circuit 334 of the fault current sensor 330 is configured to detect a test ⁇ signal via the control apparatus side portion 362 of the Hinleiters is transmitted from the control device 320.
- the test signal represents here a request for initiating and / or performing a self-test of the error ⁇ current sensor 330.
- the controller 320 is configured to transmit the test signal via the control apparatus side portion 362 of the Hinleiters to the error ⁇ current sensor 330th
- the error power generating device 332 of the error ⁇ current sensor 330 is adapted to generate in response to said detected by the electrical switch 334 ⁇ tung test signal a test fault current.
- the error ⁇ power generating device 332 is configured to generate the intentional test fault current in the return conductor 372, 374, 376, the wicks of the electrical load 340.
- the electrical circuit 334 of the error ⁇ current sensor 330 is formed to detect a modulation of an electrical voltage on the control-device side portion 362 of the Hinleiters as the test signal.
- the control device 320 is designed to modulate the electrical voltage on the control-device-side section 362 of the Hinleiters to transmit the test signal.
- Fig. 4 is a schematic illustration of a fault-current protection device 310 shows ge ⁇ Mäss one embodiment. Furthermore, an electrical load 340 for a vehicle is shown.
- the fault-current protection device 310 is the error ⁇ current device of FIG. 3 or a similar fault-current protection device.
- the fault current protective device is configured 310 to monitor the electrical consumers Ver ⁇ 340th
- the residual current device 310 can be used in the driving ⁇ imaging of FIG. 3 or a similar vehicle.
- the error ⁇ current device 310 is disposed in the vehicle in FIG. 3.
- the display of the fault current protection device 310 in Fig. 4 corresponds in principle to the presentation of the fault current protective device of FIG. 3 with the exception that shown by the control device 320 further includes a current sensor 422, an output switch 424, structural ⁇ turan circuits 426 and supply terminals 428 that from the error ⁇ current sensor 330 further includes a measuring device 432 is shown that is electrical Ver ⁇ consumers 340 out ⁇ leads as a heater or heating element for a heated component 440 that a symbolically illustrated fault current 442 to a component fabric port 444 of the heated component 440 is shown and that a return conductor structure connection 474 is shown.
- the fault current sensor 330 From the fault current sensor 330, the measuring device 432 and the electrical circuit 334 are shown according to the abroadsbei ⁇ game shown in FIG. 4, which may also be referred to as electronics 334.
- the electrical circuit 334 corresponds to the electrical circuit of FIG. 3.
- the fault current sensor 330 also includes the fault current generating device of FIG. 3 and a signaling device.
- the measuring device 432 is adapted to a differential current between a ers ⁇ th electric current in the electrical supply conductor, the hinmony from the control device 320 for controlling the electrical load 340 to the electrical load 340, more specifically, in the control apparatus side portion 362 of the Hinleiters, and a second electrical current in the electrical return conductor 372, 374 to mes ⁇ sen, which leads away from the electrical load 340.
- the differential current 440 is generated by the test fault current, the current sensor by the error power generating device of the error 330, and / or by the fault current 442 due to a ⁇ extraneous error did, for example, the electrical load 340 and the heated component physicallyrufbar.
- the signaling device of the fault current sensor 330 is designed to report the test fault current and / or the fault current 442 to the control device 320 via the forward conductor, specifically the control device side section 362 of the Hinleiters, depending on the comparison of the measured differential current with the threshold.
- the notification device is adapted to the error ⁇ stream 442 and / or the test fault current using a Stromamplitudenmo- dulation on the go conductor, in particular the control device side portion 362 of the Hinleiters to report to the control device 320th
- the reporting device is adapted to the fault current 442 and / or the test leakage current by modulating a high-frequency data signal on the forward conductor, in particular the control device side portion 362 of the Hinleiters to report to the control device 320th
- the electrical circuit 334 is configured to perform the comparison of the measured differential current with a threshold value.
- the controller 320 which may also be referred to as a heater controller, includes the current sensor 422, the output switch 424, the structure terminals 426, and the supply terminals 428, according to the embodiment illustrated in FIG. 4.
- the current sensor 422 and the output switch 424 are connected to the control device-side section 362 of the Hinleiters, which can also be referred to as a single-pole electrical connection.
- the current sensor 422 is configured to detect an electric current in the forward conductor.
- the output switch 424 is formed from ⁇ to interrupt an electric current flow in the Hinleiter.
- the control ⁇ device 320 also includes an output terminal for connection to the tax regulations direction side portion 362 of the Hinleiters.
- the current sensor 422 is electrically connected between the output switch 424 and the output terminal.
- the control device 320 can be connected to the structure-side section of the return conductor or directly to the structural element. At least ei ⁇ ner of structural connections 426 represents one input terminal for at ⁇ circuit to the other structure-side portion of the return line or directly to the structural element. About the supply terminals 428, an electrical voltage to the forward conductor and the return conductor can be applied. In other words, a the residual current device 310 and the heated component 440 to the electrical consumer ⁇ cher 340 exhibiting system via the supply terminals 428 with electric Leis ⁇ tung supplied or can be connected to an electrical power source.
- the control device 320 according to the exemplary embodiment shown in FIG. 4 has an electrical evaluation circuit for evaluating the fault current 442 reported by the fault current sensor 330. Additionally or alternatively , the control device 320 has a receiving circuit for receiving the fault current 442 reported by the fault current sensor 330.
- the heated component 440 has the electrical load 340 or heater 340 and the component structure connection 444.
- the component structure connection 444 serves, for example, a grounding of the heated component 440.
- the heated component 440 is connected to a driving ⁇ generating structure or the structural element of the vehicle.
- the return conductor structure connection 474 of the structure side section 374 of the rear ⁇ conductor can be connected to the structural element of the vehicle.
- the Return conductor structure connection 474 may also be part of fault current sensor 330.
- the structure side portion 374 of the return conductor and at least one of the structure at ⁇ connections 426 of the control device 320 electrically conductively connected or the structural element of the vehicle connected with each other.
- control device 320 and the fault current sensor 330 are housed separately from each other according to the embodiment shown here.
- the control device 320 includes a first housing and the fault current sensor 330, a separate second housing spaced vonei ⁇ Nander or are arranged separately.
- 362 of the Hinleiters is at least as long as the load-side section 364 of the Hinleiters according to the ge ⁇ showed in Fig. 4 embodiment, the control device-side portion. In this case, a length of the control device-side section 362 of the Hinleiters only be ⁇ playfully about 1 meter.
- the error current sensor 330 which is the control device 320, for example, a heater controller 320, associated with, but submit from the same sets ⁇ and close to the monitored electrical load 340, typically an electric heater, is disposed formed, inter alia, to to monitor a load current in the forward and return conductors to this electrical load 340 to the occurrence of a differential current, an electrical supply of the fault current sensor 330 is made from the forward conductor, which is designed for example as a single-pole electrical connection to the monitored load 340.
- the fault current sensor 330 manipulates the current flowing in the forward conductor of the current ⁇ art that said upstream control device 320 detects a fault in the electrical load 340, and this can turn off.
- error ⁇ current sensor 330 are monitored.
- the fault current sensor 330 is to be monitored, for example, directly on the placed heated component 440 and the way of the return conductor to the heated component 440 are performed by the fault current sensor 330 toward ⁇ .
- an error current in the fault current sensor 330 indirectly by comparing the return current flowing in the outward and the return conductors or components at ⁇ circuits detected in the electric circuit 334 and electronics 334 rated and from a certain fault current value, z. B.
- the control device 320 has the evaluation device to a technical device which is adapted to such a feedback schemewer ⁇ th, and then the heated component 440 via a mechanical or electromechanical ⁇ African output switch 424, for example, single-pole permanently disable.
- a Ener ⁇ giemers of the remote controller 320 from the heater leak sensor 330 is tolei ⁇ tet or derivable from a supply voltage of the component to be monitored heated 440th Not only the feedback from the fault current sensor 330 to the Hei ⁇ zercontroller 320, but also the transmission of the test signal from the Schuercontrol ⁇ ler 320 to the fault current sensor 330 via the Hinleiter or a supply voltage line for the heated component 440, so in particular no additional ⁇ electrical connections are required.
- a detected fault current 442 the fault current sensor 330 reports to the heater controller 320 via the Hinleiter or the supply line, preferably by changing a current amplitude. Such a change or current change is detected by a ⁇ already be arranged in the heater controller 320 output current sensor, and is made ⁇ cycled to shut off the heated component 440th
- Fig. 5 shows a schematic view of a leak sensor 330 for error ⁇ current device according to one embodiment.
- the fault current sensor 330 is, this is the fault current sensor, the fault current protective device of FIG. 4 or a similar fault current sensor, wherein the Kingsstromerzeu ⁇ constriction device and an embodiment of the signaling device of the error ⁇ current sensor 330 are shown in greater detail in Fig. 5.
- the fault current sensor 330 including the fault current generator 332, the electric circuit 334 and the measuring device 432, the driver side portion 362 of the ladder, the consumer side portion 364 of the ladder, the load side portion 372 of the return conductor, the structure side portion 374 of FIG Return conductor, the return conductor structure terminal 474, further a defined load 538 and a load switch 540 or switch 540 for load switching the message device of Feh ⁇ lerstromsensors 330 and finally an electrical resistance 580 and a fault ⁇ current switch 590 of the fault current generating device 332 shown.
- the fault current sensor 330 has the fault current generating device 332, which has the electrical resistance 580 and the fault current switch 590, the electrical current. circuit 334, the measuring device 432 and the signaling device having the load switch 540 and the defined load 538.
- the fault current generator 332 includes the electrical resistance 580 and the fault current switch 590.
- the fault current switch 590 is configured to turn on the electrical resistance 580 to generate the test fault current.
- the elekt ⁇ generic resistor 580 is electrically connected to the return conductor 372, 374 connected.
- the fault current switch 590 is designed to electrically connect the electrical resistance 580 to the outgoing conductor 362, 364 in a closed switching position. In this way the test fault current can be generated.
- the signaling device of the fault current sensor 330 has the load switch 540 and the defined load 538.
- the defined load 538 is electrically connected to the return conductor verbun ⁇ or between a terminal of the load switch 540 and the return conductor maral ⁇ tet.
- the load switch 540 is designed to connect the defined load 538 with the outgoing conductor 362, 364 in a closed switching position.
- a current change by means of the load switch 540 which may be designed as a mechanical or elekt ⁇ ronic switch, generated in the fault current sensor 330 that the arranged in the fault current sensor 330 defined load 538 is switched on.
- electrical circuit 334 or additional circuitry or electronics 334 is configured to provide an electrical clamping ⁇ voltage on the forward conductor 362, 364 of the monitoring at the electrical load to the test signal in the form of a defined modulation by the upstream Steuervorrich ⁇ tion is generated to monitor.
- This provides an additional function within the electrical circuit 334 constitute Where such a supply voltage modulation detected as a test signal.
- the fault current sensor 330 generates by an internal auxiliary ⁇ circuit in the form of the error power generating device 332 a test leakage current, which the measuring apparatus 432, in turn, recognizes as a differential current.
- the load current is then manipulated, thus also in the case of the test fault current, by the signaling device of the fault current sensor 330 in such a way that the upstream control device recognizes this as an error message by the fault current sensor 330.
- the fault current sensor 330 has a Hinleiter- input terminal for connection to the control device side portion 362 of the Hinleiters, a Hinleiter-output terminal for connection to the consumer-side portion 364 Hinleiters, a return conductor input terminal for connection to the consumer-side portion 372 of the return conductor and a Return conductor output terminal for connection to the structure-side section 374 of the return conductor.
- FIG. 6 shows a flow chart of a method 600 for carrying out a self-test of a fault current sensor according to one exemplary embodiment.
- the method 600 is to be effected from ⁇ feasible to perform a self-test or a fault current sensor for a residual current device for monitoring an electrical load on a vehicle of the same implementation.
- the method 600 is to perform a self-test of a fault current sensor in conjunction with or using the fault current sensor of any of FIGS. 3-5 or a similar fault current sensor, or in conjunction with or using a fault current protection device of any one of FIGS 4 or a similar error ⁇ current protection device executable.
- the method 600 for performing a self-test of a residual-current sensor has ei ⁇ NEN step 610 of detecting a test signal in an electrical supply conductor, the hinmony by a control device for controlling the electrical load to the electrical ⁇ 's consumers.
- the test signal represents a prompt to perform ⁇ perform a self-test of the leak sensor.
- a subsequent step 620 of generating a test fault current is generated in an electrical return conductor which diverts from the electrical load in response to the detected test signal.
- step 630 of measuring a differential current between a ⁇ ers th electric current in the electric forward conductor and a second electrical current in the electrical return conductor is measured.
- step 640 of reporting is reported depending on a comparison of the measured current difference with a threshold value of at least the test residual current over the forward conductor to the Steuervorrich ⁇ processing.
- a step of comparing the measured differential current with a threshold value may also be performed between the step 630 of the measurement and the step 640 of the reporting, in order to detect or determine a presence of a fault current.
- an exemplary embodiment comprises a "and / or" link between a first feature and a second feature, then this is to be read such that the exemplary embodiment according to one embodiment either the first feature and the second feature and according to another embodiment either has only the first feature or only the second feature.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Emergency Protection Circuit Devices (AREA)
- Measurement Of Current Or Voltage (AREA)
- General Physics & Mathematics (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015012923.6A DE102015012923A1 (en) | 2015-10-07 | 2015-10-07 | Residual current sensor for a residual current device for monitoring a vehicle electrical load, residual current device and method for performing a self-test of a residual current sensor |
PCT/EP2016/071282 WO2017060035A1 (en) | 2015-10-07 | 2016-09-09 | Fault current protection device for monitoring an electric load for a vehicle, and method for carrying out a self-test of a fault current sensor |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3360217A1 true EP3360217A1 (en) | 2018-08-15 |
Family
ID=56940027
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16766518.1A Ceased EP3360217A1 (en) | 2015-10-07 | 2016-09-09 | Fault current protection device for monitoring an electric load for a vehicle, and method for carrying out a self-test of a fault current sensor |
Country Status (5)
Country | Link |
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US (1) | US10985549B2 (en) |
EP (1) | EP3360217A1 (en) |
CA (1) | CA3000874C (en) |
DE (1) | DE102015012923A1 (en) |
WO (1) | WO2017060035A1 (en) |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015008699B4 (en) * | 2015-07-08 | 2017-05-11 | Jenoptik Advanced Systems Gmbh | Residual current sensor for a residual current device for monitoring an electrical load for a vehicle |
CN107144756A (en) * | 2017-06-29 | 2017-09-08 | 东莞市广安电气检测中心有限公司 | Switch cubicle test device |
US10992123B2 (en) * | 2018-06-13 | 2021-04-27 | Infineon Technologies Ag | Protected idle mode bypassing power stage |
DE102019128453A1 (en) * | 2019-10-22 | 2021-04-22 | Audi Ag | Method for performing a line diagnosis on a return line of a supply cable of a motor vehicle and a control device and motor vehicle set up for this purpose |
CN218783576U (en) * | 2020-04-17 | 2023-03-31 | 伊柯莱特有限公司 | Arc fault protection device |
US11916370B2 (en) | 2020-05-29 | 2024-02-27 | Leviton Manufacturing Co., Inc. | Apparatus, systems and methods for performing ground fault self-testing |
WO2021261000A1 (en) * | 2020-06-24 | 2021-12-30 | 日立Astemo株式会社 | Vehicle-mounted control device |
CN116908518B (en) * | 2023-07-13 | 2024-04-05 | 浙江恒业电子股份有限公司 | Acquisition terminal with residual current detection function |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
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AT406431B (en) * | 1998-01-28 | 2000-05-25 | Felten & Guilleaume Ag Oester | DEVICE FOR ANALYZING EARTH FAULT CURRENTS APPLICABLE IN AN ELECTRICAL SYSTEM AND BY THIS CONTROLLED SWITCHGEAR |
US6421214B1 (en) * | 2000-03-03 | 2002-07-16 | Pass & Seymour, Inc. | Arc fault or ground fault detector with self-test feature |
CN1969191A (en) | 2003-07-09 | 2007-05-23 | 伊斯拉-裘克电子有限公司 | System, apparatus and method for detection of electrical faults |
DE102008033148B4 (en) | 2008-07-15 | 2014-01-02 | Siemens Aktiengesellschaft | Method for performing a self-test by a residual current device and residual current device |
US8405939B2 (en) * | 2010-03-08 | 2013-03-26 | Pass & Seymour, Inc. | Protective device for an electrical supply facility |
US9948087B2 (en) * | 2010-03-08 | 2018-04-17 | Pass & Seymour, Inc. | Protective device for an electrical supply facility |
DE102011084362B4 (en) * | 2011-03-30 | 2015-03-05 | Bender Gmbh & Co. Kg | Electrical protection and monitoring device in an electric vehicle for safe driving and safe charging and regenerative operation of the electric vehicle at a charging station |
US9283852B2 (en) * | 2012-05-09 | 2016-03-15 | Schneider Electric USA, Inc. | Diagnostic receptacle for electric vehicle supply equipment |
US9206684B2 (en) * | 2012-11-01 | 2015-12-08 | Schlumberger Technology Corporation | Artificial lift equipment power line communication |
EP3011652A4 (en) * | 2013-06-21 | 2016-12-28 | Schneider Electric Usa Inc | Synthetic fault remote disconnect for a branch circuit |
-
2015
- 2015-10-07 DE DE102015012923.6A patent/DE102015012923A1/en active Pending
-
2016
- 2016-09-09 US US15/767,026 patent/US10985549B2/en active Active
- 2016-09-09 EP EP16766518.1A patent/EP3360217A1/en not_active Ceased
- 2016-09-09 CA CA3000874A patent/CA3000874C/en active Active
- 2016-09-09 WO PCT/EP2016/071282 patent/WO2017060035A1/en active Application Filing
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CA3000874A1 (en) | 2017-04-13 |
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CA3000874C (en) | 2023-10-17 |
US20180299499A1 (en) | 2018-10-18 |
US10985549B2 (en) | 2021-04-20 |
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