CN219418664U - Current transformer assembly for measuring switch and measuring switch - Google Patents

Abstract

The utility model provides a current transformer component for a measuring switch and a measuring switch, wherein the current transformer component comprises a shell, a current transformer for protection, a current transformer for measurement and a bus wiring board, a first mounting groove for accommodating the current transformer for protection and a second mounting groove for accommodating the current transformer for measurement are arranged in the shell, the bus wiring board comprises a wiring board body electrically connected with the current transformer for measurement and the current transformer for protection and a first electric plug connector which is arranged on the wiring board body and is in plug-in fit with a control module component, an avoidance opening for exposing the first electric plug connector is arranged above the shell, and the current transformer for protection, the current transformer for measurement and the bus wiring board are arranged in the shell to form a module.

Description

Current transformer assembly for measuring switch and measuring switch

Technical Field

The present utility model relates to the field of measuring switches, and more particularly, to a current transformer assembly for a measuring switch and a measuring switch.

Background

The measuring switch is suitable for a three-phase four-wire power distribution network with alternating current of 50Hz, rated current of 250A (100A-250A can be adjusted), rated insulation voltage of 1000V and rated working voltage of 400V, and neutral point is directly grounded. The measuring switch has the multiple internet-of-things sensing functions of high-precision current and voltage sampling, power supply relation topology identification, metering box management, electricity stealing early warning, power failure event reporting, line loss analysis and judgment, fault automatic diagnosis and the like, has overload long-delay, short-circuit short-delay, short-circuit instantaneous, overvoltage and undervoltage and phase failure protection functions, has protection functions on circuits and power supply equipment, realizes interconnection and intercommunication of real-time measurement data of a load end and a power system of a background power grid, and can be widely used in mortgage power transmission and distribution for intelligent power grid construction.

The current common measuring switch is used for achieving the functions, and the main control board PCB assembly needs 3 groups of current transformers for protection and 3 groups of current transformers for measurement, so that the wiring of the internal circuit of the product is complicated and disordered, and the main control board PCB assembly is not easy to disassemble, assemble and overhaul. In order to simplify the installation and wiring of the current transformer, some products often adopt a transformer with overlapped protection and metering functions, but the transformer has high cost and metering accuracy, and cannot be used as a current transformer with independent metering function.

Disclosure of Invention

The utility model aims to provide a current transformer component for a measuring switch, which is simple and convenient to assemble and disassemble.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a current transformer subassembly for measuring switch is connected with the control module subassembly electricity of measuring switch, the current transformer subassembly includes the casing, current transformer for the protection, current transformer for the measurement and the junction box that converges, be equipped with in the casing and be used for holding the first mounting groove of current transformer for the protection and be used for holding the second mounting groove of current transformer for the measurement, the junction box that converges includes the junction box body and locates on the junction box body and with the first electric plug connector of control module subassembly grafting complex for current transformer for the measurement electricity connection, the casing top is equipped with and is used for letting the first electric plug connector be exposed dodge the mouth.

Further, the first electric plug connector is a plurality of jacks, the control module assembly is provided with pin bars corresponding to the positions of the jacks, and the jacks are matched with the pin bars to realize the electric connection of the current transformer assembly and the control module assembly; or, the first electric plug connector is a pin header, a plurality of jacks corresponding to the pin header are arranged on the control module assembly, and the jacks are matched with the pin header to realize the electric connection of the current transformer assembly and the control module assembly.

Further, the wiring board body is fixed on the inner wall of the second mounting groove.

Further, the wiring board body is fixed on the inner wall of the second mounting groove through a fixing pin.

Further, the current transformer for metering is annular, and the bottom of the second mounting groove is provided with a limit rib which is adaptive to the shape of the current transformer for metering.

Further, the shell comprises an upper cover and a base, and the upper cover and the base are connected into a whole through a fastener.

Further, the current transformer for metering and the current transformer for protection are respectively and electrically connected with the wiring board body through connecting wires.

The utility model also discloses a measuring switch, which comprises a shell, a control module assembly and a current transformer assembly, wherein the current transformer assembly is the current transformer assembly used for the measuring switch in any technical scheme, the control module assembly comprises a line concentration PCB (printed circuit board), a second electric plug connector matched with the first electric plug connector is arranged on the line concentration PCB, and the first electric plug connector is in plug connection with the second electric plug connector to realize the electric connection between the current transformer assembly and the control module assembly.

Further, the current transformer assembly is provided with 3, and the line concentration PCB board is provided with 3 corresponding second electric connectors.

After the technical scheme is adopted, the utility model has the following advantages:

according to the utility model, the current transformer for protection, the current transformer for measurement and the bus wiring board are arranged in the shell to form a module, and the current transformer assembly is modularized, so that the installation and wiring of the current transformer are simplified, the wiring of the current transformer assembly is simple, and the disassembly and the maintenance of the current transformer assembly are convenient. Meanwhile, the mode that the current transformer component and the control module component are electrically connected is realized through the plug-in cooperation of the avoidance port and the control module component by adopting the first electric plug-in connector, so that the internal circuit of the measuring switch is further simplified, the connecting wire inside the measuring switch is reduced, and the convenience of disassembly, assembly and maintenance of the current transformer component is further improved. In addition, the protection current transformer is accommodated in the first installation groove, and the metering current transformer is accommodated in the second installation groove, so that the protection current transformer and the metering current transformer are fixed in position, and the use is safer and more reliable.

Drawings

The utility model is further described below with reference to the accompanying drawings:

fig. 1 is a schematic structural diagram of a current transformer assembly according to the present utility model.

Fig. 2 is a schematic view of the current transformer assembly according to the present utility model with a housing removed.

Fig. 3 is an exploded view of the current transformer assembly of the present utility model.

Fig. 4 is a cross-sectional view of a second mounting slot in a current transformer assembly according to the present utility model.

Fig. 5 is an exploded view of the current transformer assembly of the present utility model mated with a control module assembly.

Fig. 6 is a schematic diagram of the cooperation of the current transformer assembly and the control module assembly according to the present utility model.

FIG. 7 is a schematic diagram of a measuring switch according to the present utility model.

The names of the components marked in the figure are as follows:

100. a current transformer assembly; 110. a housing; 111. an upper cover; 112. a base; 113. a first mounting groove; 114. a second mounting groove; 115. a limit rib; 116. a fastener; 117. an avoidance port; 120. a protective current transformer; 130. a current transformer for metering; 140. a bus bar; 141. a wiring board body; 142. a jack; 143. a fixing pin; 144. a connecting wire; 200. a control module assembly; 210. a line concentration PCB board; 211. arranging needles; 300. a housing.

Detailed Description

The utility model will be further described with reference to the drawings and the specific examples. It is to be understood that the terms "upper," "lower," "left," "right," "longitudinal," "transverse," "inner," "outer," "vertical," "horizontal," "top," "bottom," and the like, as used herein, are merely based on the orientation or positional relationship shown in the drawings and are merely for convenience in describing the present utility model and to simplify the description, and do not indicate or imply that the devices/elements referred to must have or be configured and operated in a particular orientation and therefore should not be construed as limiting the utility model.

As shown in fig. 1 to 6, the present utility model provides a current transformer assembly 100 for a measuring switch, which is electrically connected to a control module assembly 200 of the measuring switch, wherein the current transformer assembly 100 includes a housing 110, a current transformer 120 for protection, a current transformer 130 for measurement, and a bus bar 140, a first mounting groove 113 for receiving the current transformer 120 for protection and a second mounting groove 114 for receiving the current transformer 130 for measurement are provided in the housing 110, the bus bar 140 includes a terminal block body 141 electrically connected to the current transformer 130 for measurement and the current transformer 120 for protection, and a first electrical connector provided on the terminal block body 141 and mated with the control module assembly in an inserting manner, and a relief opening 117 for exposing the first electrical connector is provided above the housing 110. According to the utility model, the current transformer for protection, the current transformer for measurement and the bus wiring board are arranged in the shell to form a module, and the current transformer assembly is modularized, so that the installation and wiring of the current transformer are simplified, the wiring of the current transformer assembly is simple, and the disassembly and the maintenance of the current transformer assembly are convenient. Meanwhile, the mode that the current transformer component and the control module component are electrically connected is realized through the plug-in cooperation of the avoidance port and the control module component by adopting the first electric plug-in connector, so that the internal circuit of the measuring switch is further simplified, the connecting wire inside the measuring switch is reduced, and the convenience of disassembly, assembly and maintenance of the current transformer component is further improved. In addition, the protection current transformer is accommodated in the first installation groove, and the metering current transformer is accommodated in the second installation groove, so that the protection current transformer and the metering current transformer are fixed in position, and the use is safer and more reliable.

In this embodiment, the first electrical connector is a plurality of jacks 142, the control module assembly 200 is provided with pins 211 corresponding to the plurality of jacks, and the plurality of jacks and the pins are matched to realize electrical connection between the current transformer assembly and the control module assembly. Through a plurality of jacks and the cooperation of arranging the needle grafting, simplified the connecting line of current transformer, make the dismouting of current transformer subassembly simple and convenient simultaneously. Specifically, the number of the insertion holes 142 is 4, and the pin 211 is 4 pins.

It can be understood that the first electric plug connector can also be a pin header, the control module assembly is provided with a plurality of jacks corresponding to the pin header, and the jacks are matched with the pin header to realize the electric connection of the current transformer assembly and the control module assembly.

The wiring board body 141 is fixed to the inner wall of the second mounting groove 114. Specifically, the wiring board body 141 is fixed to the inner wall of the second mounting groove 114 by fixing pins 143. The wiring board body is more stable and reliable in use.

The current transformer 130 for measurement is in a circular ring shape, and the bottom of the second installation groove 114 is provided with a limit rib 115 which is adapted to the shape of the current transformer 130 for measurement. Through setting up spacing muscle, further inject the position of current transformer for measurement in the second mounting groove for the use of current transformer for measurement is more reliable and stable.

The housing 110 includes an upper cover 111 and a base 112, the upper cover 111 and the base 112 are integrally connected by a fastener 116, and the installation and the disassembly of the current transformer for metering, the current transformer for protection and the bus bar are facilitated by the split arrangement of the housing.

The measuring current transformer 130 and the protecting current transformer 120 are electrically connected to the wiring board body 141 via connection wires 144, respectively.

As shown in fig. 5 to 7, the present utility model further discloses a measuring switch, which includes a housing 300, a control module assembly 200, and a current transformer assembly 100, where the current transformer assembly is a current transformer assembly used for the measuring switch in any of the foregoing embodiments, the control module assembly 200 includes a hub PCB board 210, and a second electrical connector matched with the first electrical connector is disposed on the hub PCB board 210, and the first electrical connector and the second electrical connector are in plug-in matched connection to implement electrical connection between the current transformer assembly and the control module assembly. Through adopting modular current transformer subassembly, simplified the installation and the dismantlement of current transformer subassembly in measuring the switch, current transformer subassembly and control module subassembly are pegged graft through first electric connector and second electric connector cooperation simultaneously, have reduced measuring the switch internal circuit, have further simplified the installation and the dismantlement of current transformer subassembly in measuring the switch.

In this embodiment, the first electrical connector is a plurality of jacks 142, the second electrical connector is a pin 211, and the plurality of jacks and the pin are in plug-in fit to realize electrical connection between the current transformer assembly and the control module assembly.

The current transformer assembly 100 is provided with 3, and the line concentration PCB board 210 is provided with 3 corresponding second electrical connectors, that is, the line concentration PCB board 210 is provided with 3 corresponding pins.

It can be understood that the first electric plug connector can also be a pin header, the second electric plug connector is a plurality of jacks, and the plurality of jacks are in plug connection with the pin header to realize the electric connection between the current transformer component and the control module component.

In addition to the above preferred embodiments, the present utility model has other embodiments, and various changes and modifications may be made by those skilled in the art without departing from the spirit of the utility model, which is defined in the appended claims.

Claims (9)

1. A current transformer subassembly for measuring switch is connected with the control module subassembly electricity of measuring switch, its characterized in that, current transformer subassembly includes casing, protection current transformer, measurement current transformer and bus bar board, is equipped with in the casing and is used for holding the protection current transformer's first mounting groove and is used for holding the measurement current transformer's second mounting groove, and the bus bar board includes the wiring board body of being connected with measurement current transformer, protection current transformer electricity and locates on the wiring board body and with control module subassembly grafting complex first electric plug connector, is equipped with the dodge mouth that is used for letting first electric plug connector expose above the casing.

2. The current transformer assembly for the measuring switch according to claim 1, wherein the first electric plug connector is a plurality of jacks, pins corresponding to the positions of the jacks are arranged on the control module assembly, and the jacks are matched with the pins to realize the electric connection of the current transformer assembly and the control module assembly; or, the first electric plug connector is a pin header, a plurality of jacks corresponding to the pin header are arranged on the control module assembly, and the jacks are matched with the pin header to realize the electric connection of the current transformer assembly and the control module assembly.

3. The current transformer assembly for a measuring switch of claim 1, wherein the terminal block body is secured to an inner wall of the second mounting slot.

4. A current transformer assembly for a measuring switch according to claim 3, wherein the terminal block body is secured to an inner wall of the second mounting groove by a securing pin.

5. The current transformer assembly for a measuring switch according to claim 1, wherein the measuring current transformer is in a circular shape, and a limit rib corresponding to the shape of the measuring current transformer is arranged at the bottom of the second mounting groove.

6. The current transformer assembly for a measuring switch of claim 1, wherein the housing comprises an upper cover and a base, the upper cover and the base being integrally connected by fasteners.

7. The current transformer assembly for a measuring switch of claim 1, wherein the current transformer for measurement and the current transformer for protection are electrically connected to the terminal block body through connection wires, respectively.

8. A measuring switch, including shell, control module subassembly and current transformer subassembly, characterized in that, the current transformer subassembly is the current transformer subassembly that is used for measuring the switch of any one of claims 1-7, and control module subassembly includes the line concentration PCB board, is equipped with the second electric plug connector with first electric plug connector complex on the line concentration PCB board, and first electric plug connector and second electric plug connector grafting cooperation realize current transformer subassembly and control module subassembly electricity and be connected.

9. The measuring switch of claim 8, wherein the current transformer assembly is provided with 3, and the line concentration PCB board is provided with corresponding 3 second electrical connectors.