2210results about "Time integral measurement" patented technology

The invention discloses a multi-modal error dynamic compensation method and system for an intelligent electric meter, and the method comprises the steps: constructing an environment perception unit, and obtaining an environment factor parameter; performing weighted calculation on the environmental factor parameters to generate an environmental metabolic index; constructing an error prediction model based on the hormone release promoting factor action mechanism in combination with the environmental metabolic index so as to obtain a prediction error offset; original signals are collected in real time, multi-modal error detection is carried out, and error vectors are generated; acquiring a compensation trigger threshold according to the error vector; and comparing the predicted error offset with a compensation trigger threshold, and triggering a multi-stage compensation mechanism. According to the invention, the metering parameters of the electric meter can be dynamically adjusted on line in real time under complex working conditions, so that the stability and accuracy of the electric meter are improved.

The invention provides a field data verification device based on a money-free clamp buckle type single-phase electric energy meter, and the device comprises a host which is used for starting a measurement process through the contact of a probe with a signal contact of the electric energy meter, receiving current data transmitted by a wireless clamp-shaped current transformer, and carrying out the filtering, calibration and error analysis of the measurement data; and the wireless split core type current transformer is used for being clamped on a current loop of the measured electric energy meter, starting to measure current data and sending the current data to the host in a wireless mode. According to the invention, a wireless communication technology, a field data processing algorithm and a verification function are integrated, and field real-time data acquisition, processing, analysis and verification can be realized, so that the efficiency and accuracy of verification work are improved.

The invention discloses a three-phase intelligent multifunctional electric energy meter, which relates to the technical field of electric meters and comprises an electric meter body, a communication module, a battery body, a first limiting mechanism and a second limiting mechanism. The first limiting mechanism stops the battery body from entering the battery bin when the communication module is not installed in place, and guides the communication module to be installed firstly; and after the communication module is installed, the blocking to the battery compartment is automatically relieved, so that the battery body can be installed smoothly. The second limiting mechanism limits disassembly of the communication module when the battery body is not disassembled, the battery body is guided to be disassembled firstly and then the communication module is disassembled, the communication module is prevented from being mistakenly disassembled in a power-on or power-off state, and therefore the problems of power-off, hot plugging or electrical breakdown and the like of the communication module caused by misoperation can be avoided; and the reliability and the safety in the maintenance process of the electric energy meter are improved.

According to the grid-connected line electric energy quality on-line detection device, the system comprises a broadband sensing module which is deployed on a grid-connected line to form an original analog signal; the conditioning module forms a standardized digital sampling signal; the edge calculation module receives the standardized digital sampling signal, analyzes a voltage effective value, a harmonic distortion rate, a sag depth and an event duration index in real time through a parallel calculation architecture, and forms an electric energy quality characteristic data set; the intelligent analysis module receives the electric energy quality characteristic data set to form an abnormal event report; and the communication interaction module receives the abnormal event report, encapsulates the abnormal event report into a standardized data frame through a configurable protocol stack, synchronously pushes the standardized data frame to the local monitoring terminal and the cloud management platform, receives an external control instruction and feeds back the external control instruction to the intelligent analysis module to optimize an analysis strategy. The grid-connected line electric energy quality on-line detection device can solve the problem that complex disturbance cannot be recognized in real time and cannot be accurately traced to the source.

The invention relates to a relay and an electric meter. The relay comprises a contact system, wherein the contact system comprises a movable contact unit and a static contact unit; a pushing system; the connecting structure is connected with the pushing system and the moving contact unit, and the connecting position of the connecting structure and the pushing system is located on the side, away from the static contact unit, of the moving contact unit. According to the application, the pushing system is connected with the moving contact unit through the connecting structure, and the connecting position of the connecting structure and the pushing system is located on the side, away from the static contact unit, of the moving contact unit, so that when the moving contact and the static contact are closed to generate an arc, the moving contact unit can block the arc to prevent ablation of the pushing system; and the overall reliability and service life of the relay are effectively improved.

The invention discloses a modularized wiring-free metering box, and belongs to the technical field of electrical equipment. In order to solve the problems that circuits among electrical devices in an existing product need to be connected through wires, and adjustable heat dissipation cannot be achieved, the following technical scheme is provided, and the metering device comprises a box body, and a metering module, a heat dissipation assembly, a driving mechanism, a temperature sensor main body and a controller main body which are arranged in the box body. According to the invention, the middle frame is arranged to realize the assembly of each electrical device so as to form the metering module, the copper bars are integrally arranged on the loading plate of the middle frame to replace a circuit formed by wires, and under the cooperation of the assembly components, the metering module is formed. The electric energy meter main body can be connected with a circuit on the middle frame only by downwards sliding and inserting the to-be-assembled electric energy meter main body, so that the assembly safety is improved, the loading and maintenance burden is reduced, the cleanliness of the interior of the box body is improved, an air cooling structure is additionally arranged in the box body, and the heat dissipation effect of the product is further improved.

The invention relates to the technical field of electric energy meters, and provides a temperature-controllable electric energy meter and method, a box body is internally provided with a positive-pressure heat dissipation mechanism, the positive-pressure heat dissipation mechanism comprises an air inlet pipe, the air inlet pipe is arranged in the box body and located below an electric energy metering module, one end of the air inlet pipe is closed, and the other end of the air inlet pipe penetrates through the side wall of the box body and is communicated with the outside; the mounting box covers the air inlet pipe, a plurality of cooling fans are arranged in the mounting box, and the cooling fans are used for sucking air flow in the air inlet pipe and discharging the air flow through the air outlet; the shielding part is arranged at the top of the box body and used for blocking the exhaust port, the shielding part is used for forming a positive pressure environment in the box body, and the shielding part can be opened when the internal pressure of the box body is larger than preset pressure so that gas in the box body can be exhausted through the exhaust port. Through cooperation of the positive pressure heat dissipation mechanism and the shielding piece, a dynamic positive pressure environment is constructed in the box body, external dusty air can be prevented from invading through gaps or heat dissipation holes from the source, and the problem of dust accumulation caused by heat dissipation of a traditional electric energy meter is thoroughly solved.

The invention relates to an intelligent electric energy metering box, and relates to the technical field of metering boxes, the intelligent electric energy metering box comprises a box body and two box doors, the side edges of the two box doors far away from each other are hinged to the opening edge of the box body, and the edges of the two box doors close to each other are detachably connected with the box body; connecting plates are hinged to the two opposite edges of the bottom side of the box body, and positioning plates are hinged to the side faces, away from the box body, of the connecting plates. A bearing plate is arranged below the box body, and the two opposite sides of the bearing plate are hinged to the side faces, away from the connecting plate, of the two positioning plates correspondingly. The connecting positions of the two sets of connecting plates and the two sets of positioning plates can be close to each other oppositely and folded to drive the bearing plates to move upwards in the direction close to the box body, and an adjusting piece for fixing the bearing plates in the upward moving state is arranged outside the box body. In the invention, the complexity and low efficiency of frequently climbing up and down to take tools in the maintenance process are avoided, and the potential safety hazard is also obviously reduced.

The invention discloses an electricity stealing detection method and device for a low-voltage distribution network, an intelligent electric energy meter, equipment and a medium, and the method comprises the steps: collecting the electricity utilization information and internal temperature state data of a detected electric energy meter in real time, and respectively generating corresponding real-time electricity utilization load change trend data and temperature change trend data; detecting each electric device loaded by the detected electric energy meter, and identifying the type of each electric device; predicting the electrical load of the tested electric energy meter according to the identified type of each electric device; according to the predicted electrical load of the tested electric energy meter, generating corresponding predicted electrical load change trend data; and according to the real-time electrical load change trend data, the real-time temperature change trend data and the predicted electrical load change trend data in the same time period, judging whether the detected electric energy meter has an electricity stealing behavior or not. According to the invention, the electricity larceny behavior in the low-voltage power distribution network can be quickly and accurately identified, the electricity larceny position is accurately positioned, and electricity larceny prevention is effectively realized.

The invention relates to an anti-magnetic interference intelligent electric energy metering box, and relates to the technical field of electric energy metering boxes, the anti-magnetic interference intelligent electric energy metering box comprises a meter box main body and a shielding assembly, the shielding assembly comprises a shielding box for installing the meter box main body, and a shielding cover detachably installed at the front side of the shielding box; heat dissipation openings are formed in the middle parts of the left and right vertical side surfaces of the shielding box, wiring openings are formed in the lower parts of the left and right vertical side surfaces of the shielding box, and shielding nets are fixedly arranged on the inner walls of the heat dissipation openings; protection plates are rotationally connected to the edges, close to the back side, of the left and right side surfaces of the shielding box, and a plurality of fixing holes are formed in the protection plates; limiting plates are fixedly arranged on the top faces of the two protection plates in the horizontal direction, and a locking piece is arranged on the top face of the shielding box. During carrying, the protection plates are rotated to be in a protection state of being attached to the left side face and the right side face of the shielding box, at the moment, the protection plates can play a role in protecting the shielding nets at the heat dissipation openings, and the shielding performance of the electric meter box is guaranteed.

The invention relates to the technical field of electricity meters, and particularly discloses a relay and an electricity meter thereof, comprising a mounting plate: a clamping frame is fixedly mounted on the front surface of the mounting plate, sliding grooves are formed in the upper and lower ends of the clamping frame, sliding plates are slidably connected to the inner sides of the sliding grooves, and heat dissipation fins of a heat conduction aluminum plate are attached to electronic components in the electricity meter. The n-pentane heat-conducting medium in the liquid storage box is heated and vaporized, the heat is absorbed, the heat dissipation capability is improved, the heat pushes the air cylinder to open the heat dissipation window, the air velocity in the electric meter is improved, the heat dissipation is enhanced, the temperature is continuously increased, and the heat-conducting medium is further vaporized, so that the inner current-conducting plate and the outer current-conducting plate are attached; and after the temperature is reduced, the heat-conducting medium is condensed, the air cylinder shrinks to block the heat dissipation window, the heat dissipation fan does not need to be automatically triggered by a temperature sensor, the consumption is reduced, the stability is improved, the cost is reduced, and the protection and moisture-proof performance is improved by the blocking window when the heat dissipation device is not used.

The invention relates to a single-phase load identification intelligent ammeter, which relates to the technical field of ammeters, and comprises an ammeter body, a terminal cover and a fixing piece, the ammeter body is provided with a wiring area, a display area and a drainage channel penetrating through two sides of the ammeter body, and the terminal cover is hinged on the ammeter body and covers the wiring area and the drainage channel. The fixing member is used for detachably fixing the terminal cover on the ammeter body. The plugging part is arranged on the terminal cover, the plugging groove is arranged in the wiring area, the fixing piece is taken down from the plugging part to form an air guide flow channel between the plugging part and the wiring area, and the air guide flow channel is communicated with the drainage channel. Air is supplied to the plugging part through external air supply equipment, dust removal air can be blown into the wiring area along the air guide flow channel and is discharged through the drainage channel, dust in the wiring area can be cleaned under the condition that the terminal cover is not opened, the dust removal efficiency is improved, and the maintenance risk is reduced.

Power monitors, power supply circuits, and methods for operating a power supply. The method includes determining a voltage of a power rail provided to a load device from the power supply. The method also includes detecting that the voltage of the power rail is greater than or equal to an over-voltage threshold. The method further includes incrementing an over-voltage counter when the voltage of the power rail is detected as being greater than or equal to the over-voltage threshold. The method also includes detecting that the over-voltage counter is equal to a threshold value. The method further includes generating an interrupt signal when the over-voltage counter is detected as being equal to the threshold value.

The invention belongs to the technical field of electric energy meters, and particularly relates to a single-phase electric energy meter with a magnetic ring compensation structure. The device comprises a gap magnetic ring modeling unit, a compensation coil current setting unit, a driving voltage real-time generation unit and a pulse output unit, the notched magnetic ring modeling unit is used for calculating corresponding uncompensated magnetic flux based on the magnetic conductivity after temperature correction; the compensation coil current setting unit is used for forming a compensation coil current setting value; the driving voltage real-time generation unit is used for injecting bidirectional current matched with a compensation coil current set value into the compensation coil; the pulse output unit is used for triggering metering pulse output; the method has the beneficial effects of high precision, high stability, low power consumption and high robustness.

The present invention relates to the technical field of electricity theft protection management, and specifically discloses an anti-electricity theft protection system and method for an electric energy meter. The system can comprehensively analyze and obtain a data collection deviation factor of the electric energy meter by comprehensively acquiring the operating environment parameters and operating parameters of the electric energy meter in a target area, and then compare it with a preset data collection deviation threshold, which is helpful to accurately manage the operating parameters of the electric energy meter. At the same time, based on the operating parameters of the electric energy meter and its data collection deviation factor, the abnormal power use risk index of the target area is evaluated, and compared with the abnormal power use risk threshold, so as to effectively identify abnormal power conditions and provide strong support for subsequent processing measures. On this basis, the electricity theft related parameters of the target area are obtained, and the abnormal electricity theft factor of the electric energy meter is determined, and then according to the result of the abnormal electricity theft factor, it is decided whether to start the anti-electricity theft protection measures of the electric energy meter, which is helpful to maintain the stability and safety of power supply.

The invention relates to the technical field of electrical variable measurement, and particularly discloses a temperature compensation type wide-temperature-range high-precision electric energy meter and an acquisition terminal, and the electric energy meter comprises a signal reading and recording module, an application scene analysis module, an interval compensation error calculation module, a polynomial error calculation module and a subitem dynamic compensation module. The application scene analysis module is used for receiving the electric energy acquisition parameters acquired by the signal reading and recording module and allocating error processing modes according to scenes corresponding to the electric energy acquisition parameters; classification during wide temperature range compensation value measurement is set as an electric energy parameter linear temperature drift scene and an electric energy parameter nonlinear significant scene, and an internal temperature range error of an electric energy meter is subjected to approval processing in a corresponding environment to obtain a corresponding interval error debugging value or fitting error debugging value; and the approved interval error debugging value or the approved fitting error debugging value is used as a temperature compensation parameter for temperature compensation processing, so that the metering precision of the electric energy meter after temperature compensation is finally completed is improved.

The invention discloses a connector for an electric meter box and the related electric meter box, and relates to the technical field of electric meter boxes. The device comprises a base, the front end of the base is fixedly connected with a protection plate, and the inner side of the protection plate is provided with a turnover insertion mechanism; the turnover plugging mechanism comprises a turnover plate and a fixed plate, the front end of the turnover plate is fixedly connected with a turnover seat, the top of the turnover seat penetrates through and is fixedly connected with a connecting column, and the bottom of the connecting column penetrates through and is fixedly connected with a wire. According to the invention, through the arrangement of the turnover plugging mechanism, the turnover plate can be turned over to drive the turnover seat to turn over by a certain angle when the electric meter box main body is mounted or dismounted, so that the electric meter box main body can be conveniently mounted and dismounted; and after the electric meter box main body is installed, an effect of stabilizing and limiting the overturning plate and the overturning seat can be achieved through cooperation of components such as an inserting column, an inserting groove and an arc-shaped block, and the stability of the electric meter box main body during working is ensured.

The invention relates to the technical field of electric energy metering boxes, and discloses an electric energy metering box with excellent heat dissipation, which comprises a box body, one side of the box body is provided with an accommodating groove capable of storing electrical elements, the box body is rotatably connected with a box door, and the top of the box body is provided with a storage box. The storage box can be filled with an organic matter phase change material prepared according to a specific formula, the solid-liquid conversion temperature range of the organic matter phase change material is close to the expected highest temperature under the normal operation condition of the metering box, and a micro-channel liquid cooling plate is arranged on the bottom wall of the containing groove; the micro-channel liquid cooling plate can be tightly attached to the electrical element. The metering box has the effect of improving the heat dissipation performance of the metering box.

A meter socket adapter (MSA) for connecting a battery energy storage system (BESS) to a household microgrid through a meter combo load center. The MSA includes: a housing matching an electricity meter and a meter socket in the meter combo load center; a plurality of power conductors that connect among the electricity meter, the meter socket, and BESS; a meter interconnection device (MID) switch for connecting a utility grid or one or more distribution energy resource (DER) devices to supply power to household loads in the household microgrid; a MID driving circuit for driving the MID switch to close or open; and a thermal management circuit couple with a plurality of temperature sensors disposed at each high current connection point to prevent overheat.

The utility model belongs to the field of electric energy meters, and particularly relates to an electric energy meter convenient to install, which comprises an assembly plate and an electric energy meter body, a pair of positioning plates are arranged on the surface of the assembly plate, a pair of cylinders are arranged on the positioning plates, circular grooves are formed in the cylinders, a pair of limiting cavities are formed in the inner walls of the circular grooves, and a pair of sockets are formed in the cylinders. Through a telescopic rod, a circular plate, a connecting rod and a cylinder, when the electric energy meter body is installed, the connecting rod is inserted into an insertion opening by moving the telescopic rod, the connecting rod can rotate into a limiting cavity after the connecting rod extrudes an abutting plate and then rotates the telescopic rod, and then positioning of the connecting rod is achieved, that is, positioning of the telescopic rod is achieved; compared with a traditional installation mode, the installation of the electric energy meter body is more convenient, the installation efficiency is higher, damage to related accessories during installation can be avoided, and meanwhile, the telescopic rod can be detached from the electric energy meter body, so that the device has the advantage of repeated utilization.

The multifunctional electric energy meter comprises an electric energy meter shell, an electric telescopic rod is installed on the outer wall of the electric energy meter shell, a first moving frame is fixed to the output end of the electric telescopic rod, a first spring is fixed to the outer wall of the first moving frame, and a second moving frame is fixed to one end of the first spring. According to the multifunctional electric energy meter, along with approaching of a third pressing plate, the third pressing plate can press a sleeve, the sleeve drives the corresponding first pressing plate to move downwards under stress after being pressed, and along with approaching of the first pressing plate and the second pressing plate, cutting blades between the first pressing plate and the second pressing plate can approach each other; and the corresponding position of the connecting wire is cut, and the cutting position is located at the section, exposed out of the cutting blade, of the connecting wire.

The invention relates to the technical field of electric quantity metering, and discloses an electric quantity metering system which comprises a box body and an electric quantity metering device, a box cover is hinged to the position, close to the front face, of the top of the box body through a hinge, and a fixing mechanism is arranged at the top of the box body. A box cover is opened, an electric quantity metering device is placed at the bottom of the inner wall of a box body, then a screw rod is rotated, a second hinge frame moves upwards, one end of a first hinge frame is driven to move downwards, the other end of the first hinge frame moves towards the left side and the right side in opposite directions, and the two first hinge frames are further driven to move towards the surfaces of first guide rods in opposite directions; the second hinge rod drives a sliding block to move downwards, so that a pressing plate and a heat dissipation gasket are driven to move downwards, the top of the electric quantity metering device is pressed, the electric quantity metering device is compacted and fixed, the fixing mode is convenient, the operation time is short, and the practicability is high. And the heat dissipation gasket can effectively carry out heat dissipation treatment on the electric quantity metering device.

The invention relates to the technical field of electric energy meters, in particular to a novel split type single-phase intelligent electric energy meter applying new energy battery testing, which comprises a main shell assembly, a mounting base is fixedly connected to the upper end of the main shell assembly, a buffer mechanism is arranged at one end of the base, the buffer mechanism comprises a rotating shaft, and an extrusion block is eccentrically connected to the surface of the rotating shaft assembly. An extrusion block is arranged in the base, a containing cavity used for containing a cable connector is constructed in the extrusion block, a fixing mechanism is arranged in the extrusion block and comprises an annular air bag, a tightening mechanism is arranged at one end of the extrusion block, a second sleeve is fixedly connected to the surface of the base, and the second sleeve limits the position of a cable at the same time; when the cable is pulled, the extrusion block drives the rotating shaft to compress the torsional spring for buffering, the rotating shaft rotates and inflates the annular air bag to clamp and tighten the cable joint, and the extrusion block eccentrically rotates and is matched with the sleeve to further fix one end, far away from the joint, of the cable.

The invention relates to the technical field of electric energy meters, in particular to a device convenient for replacing an electric energy meter, which comprises a fixed seat, an electric energy meter sleeve is fixedly arranged outside the top end of the fixed seat, and the electric energy meter sleeve, a screwing assembly and a driving assembly are arranged and mutually linked and matched to operate. Therefore, when the electric energy meter is replaced or installed, only the direction of rotating the auxiliary handle needs to be controlled, so that a plurality of screw binding posts can be synchronously unscrewed or screwed, an operator does not need to screw or unscrew the screw binding posts one by one by using a screwdriver, the overall operation is convenient, and the working efficiency is improved. When the screwing assembly operates, the limiting assembly is driven to operate synchronously to be opened or closed, after the screw binding post is unscrewed synchronously, the wire core and the internal wiring hole of the electric energy meter are not limited, meanwhile, the limiting assembly operates to be opened, and the top and the side edge of the sleeve of the electric energy meter are opened. At the moment, the electric energy meter in the electric energy meter sleeve can be directly taken out for replacement, and overall replacement is convenient.

The electric energy metering box comprises an electric energy meter, a box body and an adjusting structure, the electric energy meter is installed in the box body, the box body is of a cavity structure with the front end open, a door cover is arranged at the front end of the box body, and a plurality of heat dissipation holes are formed in the side walls of the two sides of the box body; the adjusting structure comprises adjusting plates, an adjusting seat and an adjusting assembly, the adjusting seat is installed in the box body through the adjusting assembly, the adjusting plates are symmetrically installed on the two sides of the adjusting seat, the adjusting plates are arranged close to the inner side wall of the box body, and the positions of the adjusting plates in the direction of the inner wall of the box body can be adjusted through the adjusting assembly. The adjusting seat moves upwards or downwards to drive the adjusting plate to move upwards or downwards, and therefore heat dissipation adjustment is achieved by adjusting the area of the heat dissipation holes covered by the adjusting plate.

The utility model discloses an electric energy meter sealing cover, and belongs to the field of electric power equipment. An electric energy meter sealing cover comprises a shell with an electric energy assembly and further comprises a cover plate detachably connected to the shell through lead sealing screws, a telescopic rope is fixedly connected to the cover plate, the end of the telescopic rope is fixedly connected with a locking column, a locking hole is formed in the shell, and the locking column is detachably arranged in the locking hole; the placing hole is formed in the outer wall of the shell, and the placing hole is matched with the lead sealing screw; according to the utility model, the lead sealing screw can be magnetically attracted and limited, so that the loss frequency of the lead sealing screw can be reduced when the cover plate is disassembled, and the cover plate can be stored and limited by using the locking column, so that the loss frequency of the cover plate can be reduced, the cover plate can be effectively stored and limited, and unnecessary loss is prevented.

The invention relates to the technical field of electric energy meters, in particular to an intelligent electric energy meter device which comprises an intelligent electric energy meter body, a wiring end is fixedly connected to the bottom of the inner wall of the intelligent electric energy meter body, a wiring assembly is movably connected to the bottom of the front side of the wiring end, and the wiring end comprises a wiring end body. The wiring terminal comprises a wiring terminal main body, the front side of the wiring terminal main body is fixedly connected with a circuit fixing assembly, the wiring terminal main body comprises a wiring terminal shell, the front side of the wiring terminal shell is provided with a plurality of wiring ports, and the wiring terminal, the wiring terminal main body, the circuit fixing assembly and the wiring assembly are arranged, so that the wiring process is automatically controlled; the complexity and the time cost of manual operation are reduced, the stability and the safety of connection are ensured by the design of the line pressing plate, the safety and the reliability of the device are improved, the problem of connection stability of the wiring terminal and the electric energy meter is solved, the risk that internal structural parts are damaged due to external tension is avoided, manual contact with an electrified part in operation is avoided, and the safety and the reliability of the device are improved. And the safety risk is reduced.

The invention discloses a guide rail type electric energy meter with a display function, and relates to the technical field of guide rail type electric energy meters, the guide rail type electric energy meter comprises a shell and a guide rail, the shell comprises a shell body and a cover plate, and the guide rail type electric energy meter further comprises a main module arranged in the shell body and used for installing electrical elements. The guide rail type electric energy meter with the display function can meter and record power consumption information of a user, display power consumption data in real time through the display screen, communicate with other equipment through the CAN communication module and the Internet of Things communication module, and is simple in structure, complete in function, low in price and beneficial to large-scale popularization and use; after the cover plate and the shell are installed and fixed, the display screen can be more stable and reliable and prevented from inclining, air between the display screen and the first transparent plate can be pumped out, vapor in the air can be prevented from generating mist, and the display effect is guaranteed; the heat dissipation effect of the display screen and the main module is better, and the use effect and the service life of the guide rail type electric energy meter are ensured.

The invention discloses an intelligent electricity larceny prevention electric energy meter, relates to the field of electric energy meters, and solves the problems that an existing electricity larceny prevention electric energy meter cannot well protect and stabilize an installed carrier communication module and is inconvenient to install wires. The communication device comprises an electric energy meter, a communication module groove, a power connection groove, a communication groove cover, a power connection groove cover, a bottom cover, a threading hole, a carrier communication module, a power connection plate, a power connection plate, a power connection groove, a power connection terminal, an opening, a sliding rod A, a pressing plate, a line pressing terminal, a spring A, an abutting plate, an extension plate, a front clamping block, a screw rod, a cover closing mechanism, a guide sliding rod, a rotating ring, a supporting plate, a circular ring, a rotating rod, a push rod, a mounting plate, a clamping groove and a clamping mechanism. The carrier communication module is also internally provided with a dismounting mechanism, and the front side surface of the supporting plate is connected with the rear end surface of the abutting plate in an attached manner. According to the device, wires can be conveniently, efficiently and quickly connected, and meanwhile, the carrier communication module can be stably and safely installed.

The present disclosure relates to apparatus and methods for determining a transfer function of a current measurement arrangement (118), or a change in a transfer function of the current measurement arrangement. In one aspect, an apparatus is disclosed comprising: a signal source (112) configured to apply a reference signal to a first current transducer (110) such that a first transducer output signal from the first current transducer comprises: a current measurement signal indicative of the first current passing through a first conductor (104); and a reference signal component resulting from the reference signal; and signal processing circuitry (116)configured to determine the transfer function of the current measurement arrangement by: extracting the reference signal component from the first transducer output signal; and determining the transfer function of the current measurement arrangement based on the transducer output signal.