CN215527618U

CN215527618U - General type measurement electric leakage module

Info

Publication number: CN215527618U
Application number: CN202120831158.9U
Authority: CN
Inventors: 邵登峰; 盛浩
Original assignee: Zhenlan Electric Shanghai Co ltd
Current assignee: Zhenlan Electric Shanghai Co ltd
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2022-01-14
Anticipated expiration: 2031-04-22

Abstract

The utility model discloses a universal type metering leakage module, which is characterized by comprising: the device comprises a base, a cover, a conductive system, a metering housing, a mutual inductor, a circuit board and a leakage housing; the conductive system is connected with the base in a screw fastening mode and penetrates through a through hole in the center of the mutual inductor; the circuit board is arranged in a cavity in the metering housing, and the metering housing is connected with the base through a clamping groove; and the secondary side outgoing line of the mutual inductor is connected with a circuit board, and a power line of the circuit board is connected with the incoming line end of the conductive system, so that signal acquisition and power acquisition of the circuit board are realized. This scheme module inlet wire end and circuit breaker body outlet terminal fasten through the screw to realize being connected between circuit breaker body and module. Through installing the module of different functions additional, the user can be very convenient carry out the function expansion to the circuit breaker to avoid the wasting of resources because of choosing the complete machine again and causing.

Description

General type measurement electric leakage module

Technical Field

The utility model relates to a universal type metering leakage module, in particular to a universal type metering leakage module of a circuit breaker, and belongs to the field of circuit protection.

Background

The molded case circuit breaker is used as a core element for control and protection in a low-voltage distribution system and is mainly used for protecting a line from being damaged by electrical faults such as overload, short circuit and the like. With the development of smart power grids and ubiquitous power internet of things, the intellectualization of the molded case circuit breaker inevitably becomes an industry development trend. The power metering is one of the functions of the intelligent plastic shell breaker, and is required to realize the measurement of parameters including current, voltage, power, electric quantity, harmonic wave and the like. Therefore, the molded case circuit breaker needs to be additionally provided with a metering assembly, and the metering assembly usually comprises a metering transformer and a metering circuit board.

One of the existing intelligent molded case circuit breakers is to integrate a metering assembly into a circuit breaker body, but the metering assembly is limited by the space of the circuit breaker body, all assemblies in the circuit breaker are crowded in arrangement, internal leads are disordered in arrangement, and risks such as wire breakage and interference exist; therefore, the difficulty of production and assembly of the circuit breaker is increased, and the reliability of operation of the circuit breaker is reduced. The other type is that the metering component is modularized and is arranged outside the breaker body, and the connection between the breaker and the metering module is realized through a wiring terminal; however, the metering module can only provide a metering function due to the structural design thereof, and cannot meet the diversified requirements of users in the aspect of function expansion.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to solve the problems indicated in the prior art.

In order to achieve the above object, the present invention provides a general-purpose electric leakage measuring module, which mainly comprises: the device comprises a base, a cover, a conductive system, a metering mutual inductor, a metering circuit board, a metering housing, a zero sequence mutual inductor, an electric leakage circuit board and an electric leakage housing. The conductive system is connected with the base in a screw fastening mode and penetrates through a through hole in the center of the mutual inductor; the circuit board is assembled to a cavity in the housing, and the housing is connected with the base through a clamping groove; and the secondary side outgoing line of the mutual inductor is connected with a circuit board, and a power line of the circuit board is connected with the incoming line end of the conductive system, so that signal acquisition and power acquisition of the circuit board are realized. In order to make the modules have corresponding functions, different transformers and coils need to be selected for combination.

And meanwhile, a metering transformer and a zero sequence transformer are selected and used, and the metering transformer and the metering circuit board are combined to meter the electric leakage module, and the metering and residual current monitoring functions are achieved. The metering transformer and the metering circuit board are combined to form a metering module, and the module only has a metering function at the moment. The zero sequence transformer and the leakage circuit board are combined to form a leakage module, a residual current release is added, and the module has a residual current protection function.

This scheme module inlet wire end and circuit breaker body outlet terminal fasten through the screw to realize being connected between circuit breaker body and module. Through installing the module of different functions additional, the user can be very convenient carry out the function expansion to the circuit breaker to avoid the wasting of resources because of choosing the complete machine again and causing.

The utility model has the advantages that the metering module is redesigned, has the metering function and is compatible with the residual current monitoring function, and can also provide the residual current protection function after being additionally provided with the residual current release. The user only can carry out diversified function to current circuit breaker through installing the module of different functions additional and expand, and need not to purchase the complete machine product that possesses corresponding function to save the circuit and reform transform the cost.

Drawings

FIG. 1 is an exploded view of a metering leakage module;

FIG. 2 is an exploded view of a metering module;

fig. 3 is an exploded view of a leakage module;

FIG. 4 is a schematic view of a base structure, wherein FIG. 4a is a perspective view and FIG. 4b is a plan view;

FIG. 5 is a schematic view of a metering transformer;

FIG. 6 is a schematic view of a metering enclosure;

FIG. 7 is a schematic diagram of a zero sequence transformer;

FIG. 8 is a schematic view of a leakage casing and dovetail features;

fig. 9 is a combination diagram of an electronic molded case circuit breaker and a metering module.

Detailed Description

In order to make the utility model more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

Examples

Referring to fig. 1-3, the universal metering leakage module includes a base 1, a zero sequence transformer 2, a metering transformer 3, a conductive system 4, a cover 5, a metering circuit board 6, a metering cover 7, a leakage circuit board 8, and a leakage cover 9.

As shown in fig. 4-6, the metering transformer 3 and the base 1 are in screw fastening connection through the metering transformer mounting hole 32 and the base mounting hole 15; the upper limit boss 71 of the metering cover 7 is inserted into the upper clamping groove 11 of the base 1, and the cover 5 is pressed on the limit boss 71 of the metering cover, so that the metering cover 7 is installed and fixed. The metering circuit board 6 is arranged in a cavity of the metering cover 7.

As shown in fig. 4 and fig. 7-8, two ends of the zero sequence transformer 2 are inserted into two end slots 13 of the base, so as to realize the primary installation limit of the zero sequence transformer 2; the zero sequence transformer 2 and the base 1 are connected through the mounting hole 22 and the mounting hole 12 in a screw fastening mode. Be provided with forked tail boss 91 on electric leakage housing 9, with the cooperation of dovetail slot 14 on the base 1, lid 5 is pressed on housing forked tail boss 91, realizes that the installation of electric leakage housing is fixed. The leakage circuit board 8 is arranged in the cavity of the leakage cover 9.

As shown in fig. 1, the metering leakage module: the conducting system 4 sequentially penetrates out of the metering mutual inductor 3 and the zero sequence mutual inductor 2 through holes; the conductive system 4 is connected with the base 1 in a screw fastening mode; the plug of the signal line 31 of the metering mutual inductor and the plug of the signal line 21 of the zero sequence mutual inductor are respectively connected with the corresponding sockets on the metering circuit board 6; and the electric wire 61 is taken from the metering circuit board 6 and is connected with the soldering lug on each phase conducting system 4 in a welding mode. The module of this kind of compound mode possesses measurement and residual current monitoring function simultaneously.

As in fig. 2, the metering module: the conductive system 4 penetrates out of a through hole in the center of the metering mutual inductor 3, and the conductive system 4 is connected with the base 1 in a screw fastening mode; the plug of the signal wire 31 of the metering mutual inductor is connected with the corresponding jack on the metering circuit board 6; and the electric wire 61 is taken from the metering circuit board 6 and is connected with the soldering lug on each phase conducting system 4 in a welding mode. The module of this kind of combination mode only possesses the measurement function.

As shown in fig. 3, the leakage module: the conducting system 4 penetrates out of the center through hole of the zero sequence transformer 2; the plug of the signal wire 21 of the zero sequence transformer is connected with the corresponding socket on the leakage circuit board 8; and a power supply wire 81 is arranged on the leakage circuit board 8 and is connected with soldering lugs on the conducting systems 4 of all phases in a welding mode. The module of this combination mode, install a residual current release again, then possess the residual current protect function.

Fig. 9 is a use example of a universal metering module, in which an electronic molded case circuit breaker b and a metering leakage module c are fastened and connected by screws on a conductive system 4; the electronic molded case circuit breaker with the additional installation of the metering leakage module has the metering function and the residual current monitoring function. The installation of general type measurement creepage module is simple convenient, and the module function is diversified, and the user accessible installs the mode of module additional, can easily realize the individualized function of circuit breaker and expand. Thereby avoiding the wasting of resources that the purchase of circuit breaker complete machine caused.

Claims

1. A universal metering leakage module, comprising: the device comprises a base, a cover, a conductive system, a metering housing, a mutual inductor, a circuit board and a leakage housing; the conductive system is connected with the base in a screw fastening mode and penetrates through a through hole in the center of the mutual inductor; the circuit board is arranged in a cavity in the metering housing, and the metering housing is connected with the base through a clamping groove; and the secondary side outgoing line of the mutual inductor is connected with a circuit board, and a power line of the circuit board is connected with the incoming line end of the conductive system, so that signal acquisition and power acquisition of the circuit board are realized.

2. The universal metering leakage module according to claim 1, wherein the mutual inductor comprises a metering mutual inductor and a zero sequence mutual inductor, the circuit board comprises a metering circuit board and a leakage circuit board, and the metering mutual inductor, the zero sequence mutual inductor, the metering circuit board and the leakage circuit board realize the metering leakage module.

3. The universal metering leakage module according to claim 1, wherein the transformer is a metering transformer, the circuit board is a metering circuit board, and the metering transformer and the metering circuit board implement a metering module.

4. The universal metering leakage module according to claim 1, wherein the mutual inductor is a zero sequence mutual inductor, the circuit board is a leakage circuit board, and the zero sequence mutual inductor and the leakage circuit board implement the leakage module.

5. The universal metering leakage module according to claim 2 or 4, wherein the leakage circuit board is connected with a current release to realize a residual current protection function.