32 results about "Residual-current device" patented technology

A residual current device is configured for connection to a power supply network having at least two power supply conductors and includes a switching device for interrupting the at least two power supply conductors, a sensor for detecting residual currents in the at least two power supply conductors, and a control circuit which is designed to detect a residual current between the at least two power supply conductors using the sensor and, when a residual current is detected, to control the switching device to carry out a switching operation.

1. Name of the product in this design: Residual Current Device Fixing Device. 2. Purpose of this design: To fix a residual current device (RCD) to prevent electric shock (mainly for 2P+N type RCDs). 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design highlights: 3D view of component 1.

1. Name of the product in this design: Residual Current Device (I). 2. Application of this design: This design is used for leakage current protection. 3. The key design feature of this product is its shape. 4. The picture or photo that best illustrates the key design points: Design 1 3D diagram 1. 5. Design 1 is designated as the basic design.

The utility model discloses a distribution box convenient for internal disassembly and assembly, which comprises a box body, the front side of the box body is connected with a door body through a hinge, the rear side in the box body is fixedly connected with a plurality of limiting assemblies in sequence from top to bottom, each limiting assembly is provided with a plurality of mounting assemblies, and one side in the box body is fixedly connected with a limiting plate. According to the utility model, components such as an air switch, a leakage protector and the like are connected with the plug board by using bolts through the mounting holes, and the plug board is clamped with the first clamping block through the second clamping block at the bottom, so that the plug board can be quickly connected with the mounting assembly, and the plug board can be quickly separated from the mounting assembly by shifting the shifting rod, thereby facilitating the disassembly; the installation assemblies can move on the limiting assemblies through the connecting blocks, the distance between the installation assemblies can be conveniently adjusted, cables can be stored and arranged through the limiting plates, the separation strips and the sealing covers, and the cables can be conveniently installed and detached.

The present disclosure relates to protective devices and methods for protection against electric shock in an AC, 3AC or DC power supply system, which has a main supply and additional power sources. In a first embodiment, a voltage measuring device is switched at each of the additional power sources. A signaling device disposed at the additional power sources signals when a voltage is exceeded by means of a disconnect signal should the measured voltage exceed a voltage threshold at the corresponding additional power source. A second embodiment comprises a residual current device disposed at each of the additional power sources and intended for identifying a corresponding residual differential current, and a measuring impedance switched at the additional power sources and intended for generating the residual differential current.

The utility model relates to the technical field of electrical safety protection devices, in particular to a leakage protector with buzzing alarm and flashing prompt functions, which comprises a casing, a leakage detection module, a tripping mechanism and a control circuit, the leakage detection module is connected with a load circuit, and the tripping mechanism is connected with the control circuit. And the tripping mechanism is controlled by the control circuit to switch on and off the circuit, the sound-light alarm module and the fault type identification unit. According to the utility model, the problem that a user may not timely perceive the action of the leakage protector in some places where the environment is noisy or the attention of people is not concentrated, so that the leakage fault cannot be timely processed is solved, the environmental limitation is broken through through the acousto-optic cooperation of the multi-color LED lamp group and the buzzer, the fault is timely perceived, and the reliability of the leakage protector is improved. Electric leakage / overload is distinguished through light color and buzzing rhythm, and rapid maintenance is guided.

The invention relates to a return current channel (20) and a method for using a residual current device (4) with a differential current sensor (8) in an ungrounded DC power supply system (2) in which the return current channel (20) is used. The return current channel (20) consists of an electronic circuit (22) that is connected via two poles between each of the active conductors (DC+, DC-) of the ungrounded DC power supply system (2) and earth (PE) and is designed to be automatically and temporarily activated upon the brief intermittent occurrence of a low-resistance insulation fault (1) in order to form a fault current circuit in which a current-limited fault current (I) is discharged. f ) flows, which triggers the residual current device (4).

Residual current device (1) with a housing (2) extending along a longitudinal axis (5) in a longitudinal direction (6) from a network-side housing area (7) to a consumer-side housing area (8), wherein a network-side connection (3) for electrical connection to a low-voltage network is arranged in the network-side housing area (7) and a consumer-side connection (4) for electrical connection to one or more electrical consumers is arranged in the consumer-side housing area (8), wherein the residual current device (1) comprises a control unit (15) for detecting fault conditions, wherein at least one status indicator element (10, 10', 10'') controllable by the control unit (15) is arranged on the housing (2) for optical signaling of the presence of a fault condition, characterized in thatthat furthermore, at least one first display means (11) controllable by the control unit (15) and at least one second display means (12) controllable by the control unit (15) are arranged on the housing (2), wherein the control unit (15) is configured to generate an optical signal by means of the at least one first display means (11) when a fault condition due to a network-side fault is detected and to generate an optical signal by means of the at least one second display means (12) when a fault condition due to a consumer-side fault is detected.

1. Name of the product in this design: Residual Current Device Cover (II). 2. Purpose of this design: For use in residual current devices (RCDs). 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

Disclosed in the present invention is a leakage current suppression method in relay self-inspection, which is applied to a grid connection process of an inverter system. An output end of a DC / AC unit of the inverter system is connected to a power grid by means of a relay set; the relay set comprises a positive relay set and a negative relay set, the positive relay set comprises at least two relays connected in series to a positive bus, and the negative relay set comprises at least two relays connected in series to a negative bus; a bidirectional switch unit is further connected between positive and negative ends of the output end of the DC / AC unit; and when the positive relay set is closed, the inverter system forms a suppression loop by controlling the DC / AC unit and the bidirectional switch unit, and the suppression loop is configured to generate the voltage for suppressing leakage current. The problem of tripping in a residual current device caused by excessively large leakage current generated during relay self-inspection is effectively solved, and the overall implementation mode is simple and easy to implement.

This disclosure provides a residual current device (RCD). The RCD includes a housing and a mechanism assembly disposed within the housing. The mechanism assembly includes a control circuit board, an input component, an output component, a reset component, and a tripping component coupled to the control circuit board. The RCD also includes a fuse assembly connected in series with the input component and includes a fuse and a fuse connecting piece. This disclosure improves the safety performance of the RCD by providing a fuse assembly, while also improving the internal structure and layout of the product. This optimizes product assembly, increases production efficiency, and reduces costs while ensuring product safety. Furthermore, the RCD of this disclosure has a simple structure and is easy to assemble, which facilitates automated production.

This utility model provides a temporary electrical wiring device for building electromechanical systems, relating to the field of junction box technology. The utility model includes a junction box with legs underneath, which support the junction box to ensure a gap between the junction box and the ground. Inside the junction box is an assembly section that connects the power bus from the power grid to the power lines of the electrical equipment. The assembly section includes a perforated plate installed inside the junction box, with circuit protection components detachably mounted on the perforated plate. A cabinet door is rotatably mounted on the junction box, and an identification plate is provided on the surface of the door. In this utility model, the perforated plate surface is evenly distributed with holes. Electrical equipment such as electricity meters, emergency power-off switches, disconnect switches, circuit breakers, and residual current devices (RCDs) are detachably bolted into the holes in the perforated plate. These components can be adjusted in position and installed on the perforated plate surface according to actual needs, requiring no additional drilling and allowing for quick adaptation to different requirements.

An automatic recloser device and a method for operating the device are provided for use with a residual current device (RCD), the RCD comprising a contactor that can be opened or closed by rotating a first controller of the RCD. The automatic recloser device comprises a housing that at least partially encloses a piezoelectric motor and a mechanical linkage arranged between the piezoelectric motor and the first controller. The mechanical linkage is coupled to the piezoelectric motor and comprises a first rigid element configured to engage with the first controller.The piezoelectric motor is configured to apply a force in a first linear direction to move the mechanical linkage, and the movement of the mechanical linkage causes the first controller to rotate in a first direction of rotation, thereby closing the contactor.

A residual current device (1) has two operation states and comprises a residual current detection unit (2) configured to detect a residual current signal (20), a calculation unit (3) configured to calculate a corresponding charge (30) from the residual current signal (20), a threshold unit (4) configured to detect whether the charge (30) exceeds a predetermined threshold (40), and a tripping unit (5) configured to trip the residual current device (1) if an exceedance of the threshold (40) is detected by the threshold unit (4). In a first operation state (11) the tripping unit (5) is configured to be activated if a residual current is detected. In a second operation state (12) the tripping unit (5) is configured to be activated if an exceedance of the predetermined threshold (40) of charge (30) is detected by the threshold unit (4). The residual current device (1) comprises a state selector (8) configured to determine the operation state (11, 12). Furthermore, a method for operating a residual current device (1) is specified.

The invention relates to a circuit arrangement (100) for a residual current device for at least one power connection (90) in a vehicle (200), in particular for at least one AC socket (10) and / or for at least one bidirectional charging socket (20), wherein the at least one power connection (90) is electrically supplied via at least one energy-generating control unit (50), wherein at least one shutdown device (16, 26) is assigned to the at least one energy-generating control unit (50), and wherein at least one sensor unit (12, 22) is arranged in the at least one power connection (90) and is electrically connected to the at least one energy-generating control unit (50).The at least one energy-generating control unit (50) is designed to interrupt the electrical supply to the at least one power connection (90) by means of the at least one shutdown device (16, 26) after receiving a shutdown signal via a shutdown line (30, 36, 38, 42) from at least one sensor unit (12, 22). The invention further relates to a vehicle (200) with a circuit arrangement (100).

The invention belongs to the technical field of leakage protectors, and particularly relates to a wide-range high-precision leakage protector, which comprises a shell assembly, a first trigger assembly and the like, and is characterized in that the shell assembly is used for manually establishing a live wire and zero line loop or manually and automatically disconnecting the live wire and zero line loop; and the first triggering assembly is used for selectively triggering the tripping assembly to quickly disconnect the circuit by amplifying induced current during micro electric leakage and large electric leakage and performing manual self-inspection on the electric leakage protection structures of the micro electric leakage and the large electric leakage in a normal state of the circuit. Compared with an existing wide-range leakage protector adopting a high-sensitivity detection element, a digital signal processing and adaptive algorithm and a high-reliability execution mechanism, the wide-range leakage protector has the advantages of low cost, high reliability and low maintenance complexity.

A fault protection device for an inductive charging system, the device including an input terminal, a storage device for electrical energy, and an input safety device disposed between the input terminal and the storage device, wherein the input safety device has at least one safety element selected from the group of safety elements consisting of a residual current device (RCD), at least one safety switch, and a discharging element.

An electrical system for connecting a source of renewable energy to one or more appliances is described. The electrical system comprises an input port, one or more output ports, a battery, an inverter, a charge controller, a resistor network, a residual current device (RCD), and a casing that encloses the battery, inverter, charge controller, resistor network and RCD. The charge controller is configured to provide electricity generated by a renewable energy source to the battery, the inverter and / or the output ports. The resistor network is connected between the battery and a ground terminal for filtering the AC voltages produced by the inverter. The RCD is connected between the inverter and the one or more output ports and is configured to disconnect the one or more output ports from the inverter.

1. Name of the product in this design: Residual Current Device (RCD). 2. Purpose of this design: To fix a circuit board for leakage current detection and fault alarm remote transmission. 3. The key design features of this product are its overall shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention discloses a maintenance integrated power box, which comprises a box body, an upper cover and an operation panel, and is characterized in that an uninterruptible power supply, an electric drum automatic winder, a stainless steel wire duct, insulating gloves, a high-voltage insulating pad and a discharge rod are arranged in the box body; by arranging insulation protection matching for high-voltage operation, the situation of omission or non-standard use is avoided; the operation panel is provided with a bipolar air switch and a multipath output assembly. The multiple paths of output assemblies are respectively connected with power line output ends in a bipolar air switch and an electric drum automatic winder, one path of output assemblies is connected with an uninterruptible power supply, and each output assembly comprises a leakage protection switch, a two-stage knife switch and a five-hole socket which are connected with one another; the uninterruptible power supply can use low-power equipment to carry out maintenance work at any time under the condition that the mains supply is not connected; the leakage protection switch and the two-stage knife switch form a composite output assembly, so that the field equipment assembly link is reduced, and the device violation problem caused by tool missing or wiring error is completely eradicated.

The utility model discloses an integrated multipath circuit leakage protector, which relates to the technical field of leakage protectors and comprises a shell, a leakage protector body is detachably mounted in an inner cavity of the shell, a plurality of side plates are fixedly mounted on the outer surface of the shell, and a plurality of jacks are formed in the tops of the outer surfaces of the side plates; through cooperative use of the winding block structure and the reset spring structure, during work, the folding rod is stretched, the position of the guide pipe is adjusted, then a wire penetrates through the guide pipe, the redundant wire is completely stretched to the storage groove, then the tension spring is stretched to move out the winding block, the redundant wire is wound on the outer surface of the winding block, and the winding block is wound on the winding block. And after the operation is finished, the pull ring is loosened, the winding block is contracted into the inner cavity of the storage groove for protection by using the elastic force of the reset spring, and finally the wire plug is inserted into the jack to be connected with the leakage protector body, so that the effects of uniformly placing the wire, facilitating the subsequent daily maintenance of the leakage protector and improving the use safety are achieved.

The invention relates to a current return channel (20) and a method for using a residual current device (4) with a differential current sensor (8) in an ungrounded DC power supply system (2) using a current return channel (20). The current return channel (20) comprises an electronic circuit (22) coupled via two terminals between each of the active conductors (DC +, DC-) of the ungrounded power supply system (2) and ground (PE) and configured to be temporarily automatically activated when the low resistance insulation fault (1) instantaneously intermittently occurs, and temporarily automatically activated when the low resistance insulation fault (1) instantaneously intermittently occurs. In this way, a fault circuit in which a current-limiting fault current (If) flows, which triggers the residual current device (4), is formed.

This invention relates to the field of residual current device (RCD) technology, specifically a safe RCD that is easy to install. The RCD includes a main body with multiple inlet holes for connecting wires on its top outer side. A restraining mechanism is fixed to the top and bottom of each inlet hole. The restraining mechanism includes a support plate with two rotatable connecting rods at one end. A rubber wheel rotates between the two connecting rods. In this invention, the two rubber wheels increase the pulling resistance of the wires, reducing the occurrence of wire pull-out. When the wire is pulled by a large force and moves, the copper wire moves into the elastic bag, preventing electric shock and improving the safety of the RCD. Simultaneously, the rubber wheels rotate and retract the traction belt as the wire moves. The traction belt pulls the elastic bag, causing the outer side of the elastic bag to tighten. The user can easily observe the tension of the elastic bag to check if the wire has pulled out of its installation position.

This invention discloses a modular and assembleable residual current device (RCD) for installation. Applying to the field of RCD technology, this invention utilizes a modular splicing structure, employing a docking mechanism and a positioning mechanism, to allow multiple RCDs to be joined together to form a single unit. This facilitates the installation of multiple RCDs as a whole at the point of use, saving time and effort and achieving convenient and flexible installation. The fixed structure, through the combined use of a connecting mechanism, a locking mechanism, and a limiting mechanism, replaces the conventional screw fixing method, simplifying the installation process and making it easier to install. Furthermore, when one RCD is damaged and needs replacement, it can limit the movement of other RCDs, preventing them from detaching from the fixed structure due to the absence of a single RCD.

An automatic recloser device 200 for use with a residual current device having a switch that is actuated by rotation of a first knob or handle 502. The recloser device comprises a housing 110 at least

This utility model relates to the field of residual current devices (RCDs) and discloses an easy-to-install RCD, including a base assembly, a mounting assembly, and an RCD body. The base assembly includes a mounting bracket and a mounting groove formed on the bracket, with evenly spaced positioning grooves inside the mounting groove. The mounting assembly includes a connecting seat and an adjusting component installed inside the connecting seat, with one end of the adjusting component connected to a transmission component. The RCD body is fixedly connected to the mounting assembly. The adjusting component includes a pressing head and a connecting rod fixedly connected to one end of the pressing head, with the other end of the connecting rod connected to a transmission sleeve. A transmission cam is fixedly connected to the transmission sleeve, and a first spring is provided on one side of the pressing head. This invention solves the problem that in the prior art, RCDs are usually installed directly using bolts, which can lead to stripping or corrosion of the bolts after prolonged inactivity, making subsequent disassembly, maintenance, and replacement very inconvenient.

Power input connector assembly (100) for an electric vehicle charging station (200), the power input connector assembly (100) comprising a residual current device (110) configured to be arranged to a printed circuit board (300), a support module (120) and wire terminal block module (130), wherein the support module (120) being configured to enable direct connection of connection members (140a-b) to the wire terminal block module (130) and the printed circuit card (300).

The present application relates to the field of electrical technology, and specifically relates to a dual-detection residual current device, comprising: a switch unit, a rectifier module unit, a temperature control detection unit, a leakage detection unit, and a trigger unit. The switch unit is disposed between an input end and an output end, and is used for controlling the input end and the output end to be energized or de-energized. The rectifier module unit is used for providing direct current to a circuit. One end of the temperature control detection unit is connected to an output end of the rectifier module unit and the other end is connected to the trigger unit, the temperature control detection unit being used for detecting the temperature of a power-line plug interface. The leakage current detection unit is disposed around a power line connected between the switch unit and the input end, and is used for detecting whether there is leakage current on the power line. The trigger unit is used for acquiring information from the temperature control detection unit or the leakage current detection unit and controlling opening and closing of the switch unit, thereby cutting off the circuit. The dual-detection residual current device is a residual current device having both temperature control detection and leakage detection functions.

A device for testing cabling connected to a residual current circuit breaker is described, comprising a housing (11) and four adjacently arranged contact pins (2) for contacting output contacts (L1, L2, L3, N) of a residual current circuit breaker. According to the invention, two sockets (4) for connecting a measuring device are attached to the housing (11), and the two sockets (4) are each connected to the ends of a connecting line (15) running within the housing (11), which connects the contact pins (2) to one another via fuses (3).

The invention relates to protective devices and methods for protection against electric shock in an AC, 3AC, or DC power supply system comprising a main power supply and additional power sources. In a first embodiment, a voltage measuring device is connected to each of the additional power sources. A signaling device arranged at each of the additional power sources signals a voltage overrun by means of a shutdown signal if the measured voltage at the respective additional power source exceeds a voltage limit value. A second embodiment comprises a residual current device arranged at each of the additional power sources for detecting a respective residual current, as well as a measuring impedance connected at each of the additional power sources for generating the residual current.