CN214706331U

CN214706331U - Novel low-voltage switchgear secondary zero ground wire wiring device

Info

Publication number: CN214706331U
Application number: CN202120402677.3U
Authority: CN
Inventors: 石洪超; 王诚博; 李庆东; 王焱豪; 葛见钦
Original assignee: Shandong Taikai Vacuum Switch Co ltd
Current assignee: Shandong Taikai Vacuum Switch Co ltd
Priority date: 2021-02-24
Filing date: 2021-02-24
Publication date: 2021-11-12
Anticipated expiration: 2031-02-24

Abstract

The utility model relates to a novel zero ground wire of low-voltage switchgear secondary wiring device, install this terminal box on the fixed beam of low-voltage switchgear cabinet body rear portion below, the terminal box is inside to be separated through the insulation board, a plurality of zero lines and PE line get into the box body from an entry, many zero lines or PE line assemble from the terminal box, connect to main zero row, PE arranges, accomplish special row special use, the external primary cable of convenience of customers, effectively avoid many secondary conductor crimping to a virtual possibility of connecing, reduce copper bar preparation punching a hole quantity, be convenient for be under construction, overhaul, improve work efficiency.

Description

Novel low-voltage switchgear secondary zero ground wire wiring device

Technical Field

The utility model relates to a power equipment technical field, in particular to novel low-voltage switchgear secondary zero ground wire wiring device.

Background

Along with the rapid development of the power grid market, the market demand of the low-voltage switch cabinet increases year by year, the end user not only requires the quality and quantity guarantee, but also requires the short supply period, and particularly as the low-voltage switch cabinet, the secondary wiring is complex, the process requirement is high, the number of cables is large, the construction difficulty is high, and the later maintenance and the overhaul convenience are required to be ensured.

The traditional low-voltage cabinet primary zero line and PE line and secondary zero line and PE line are all pressed on corresponding zero line and PE line, and are used in a cross mode, so that the defects of low safety, unattractive appearance, large workload and high virtual connection rate of the existing switch cabinet are caused. The low-voltage cabinet has many cabinet types, the secondary wiring is complicated, especially the secondary zero line, PE line frequency of use are quite high, the lead wire is more, cause very big work load. In order to reduce the workload, facilitate the construction and the maintenance and improve the working efficiency, the special zero-ground wire connection device for the low-voltage switch cabinet is designed.

Disclosure of Invention

In order to solve the technical problem, the utility model relates to a novel low-voltage switchgear secondary zero ground wire wiring device, its technical scheme is:

the low-voltage cabinet box comprises a low-voltage cabinet and a fixed beam arranged below the rear part of the low-voltage cabinet, wherein a box body is arranged in the low-voltage cabinet and arranged on the fixed beam, an insulating plate is arranged in the middle of the box body along the length direction of the box body, and the box body is divided into an upper part and a lower part; the upper part and the lower part are respectively provided with a wire inlet and n wire outlets, the wire inlet at the upper part is a zero line inlet, the wire inlet at the lower part is a PE wire inlet, the bottoms of the upper part and the lower part are respectively provided with a bottom plate, the bottom plates are copper sheets with the thickness of 3mm and are arranged along the length direction of the box body; the bottom plate is provided with two rows of wiring ports with n single phases, and a plurality of zero lines enter from the upper inlet, are respectively connected to the wiring ports after being connected to the upper bottom plate and extend out from the upper wire outlet of the box body; a plurality of PE wires enter from the lower inlet, are connected to the lower bottom plate and then are respectively connected to the lower n-phase wiring port and extend out from the lower wire outlet of the box body.

Further, n is more than or equal to 2 and less than or equal to 20.

Furthermore, the box cover is fixed on the box body, and a mounting hole matched with the box body is formed in the box cover.

Further, the outlet ports are respectively arranged at the upper part and the lower part of the box body.

Further, the insulating plate is isolated by polycarbonate insulating materials.

The utility model has the advantages that: the utility model relates to a novel zero ground wire of low-voltage switchgear secondary wiring device, install this terminal box on the fixed beam of low-voltage switchgear cabinet body rear portion below, the terminal box is inside to be separated through the insulation board, a plurality of zero lines and PE line get into the box body from an entry, many zero lines or PE line assemble from the terminal box, connect to main zero row, PE arranges, accomplish special row special use, the external primary cable of convenience of customers, effectively avoid many secondary conductor crimping to a virtual possibility of connecing, reduce copper bar preparation punching a hole quantity, be convenient for be under construction, overhaul, improve work efficiency.

Drawings

FIG. 1 is a schematic view of a lid structure;

FIG. 2 is a schematic view of the internal structure of the case;

FIG. 3 is a schematic view of the structure of the utility model after installation;

as shown in the figure, 1 box cover, 2 mounting holes I, 3 mounting holes II, 4 box bodies, 5 bottom plates, 6 screws, 7 bolts, 8 insulating plates, 9 mounting holes III and 10 fixing beams.

Detailed Description

As shown in the figure, the utility model relates to a novel low-voltage switchgear secondary zero ground wire termination, in-service use chooses for use the terminal box of various different specifications of being qualified for the next round of competitions such as single-phase 6 way, 10 way, 14 way or 20 ways according to the circumstances, can be fine with the cubical switchboard adaptation. The embodiment adopts a single-phase eight-meter household junction box.

An inlet and outlet junction box is arranged at the rear lower part of the low-voltage switch cabinet, and the box body 4 is fixed on the fixed beam 10 by a matching bolt passing through the mounting hole III 9. The box body is a cuboid, an insulating plate 8 is arranged in the middle of the box body along the length of the box body, the box body is divided into an upper part and a lower part, and the insulating plate is isolated by polycarbonate insulating materials; bottom plate 5 is equipped with respectively in the bottom of upper portion and lower part, the bottom plate is 3mm thick copper sheet to arrange along box body length direction, be equipped with bolt 7 on the bottom plate and double single-phase be 8 wiring ports, the wiring passes through the screw 6 fastening, and box body surface upper portion and lower part are equipped with 8 outlet respectively, and this outlet position corresponds with single-phase wiring port. The upper wire inlet is a zero line inlet and corresponds to the upper bolt 7, the lower wire inlet is a PE wire inlet and corresponds to the lower bolt 7, and a plurality of zero lines (a total zero line) enter from the upper inlet, are respectively connected to the upper wiring port after being connected to the upper bottom plate and extend out from the upper wire outlet of the box body; a plurality of PE wires (a total PE wire) enter from a lower inlet, are connected to a lower bottom plate and then are respectively connected to a lower wiring port and extend out from a lower wire outlet of the box body, special arrangement is achieved, and a user can conveniently and externally connect a primary cable.

Furthermore, the box cover 1 is further included, a mounting hole I2 is formed in the box cover and corresponds to a mounting hole II3 in the box body, and the box cover and the box body are fixed through a matching bolt after wiring is completed.

Furthermore, the utility model discloses also can make into the cross-section with the box body and be "T" type, the lid is the plane.

The utility model relates to a novel zero ground wire of low-voltage switchgear secondary wiring device, install this terminal box on the fixed beam of low-voltage switchgear cabinet body rear portion below, the terminal box is inside to be separated through the insulation board, a plurality of zero lines and PE line get into the box body from an entry, many zero lines or PE line assemble from the terminal box, connect to main zero row, PE arranges on, accomplish special row special use, this terminal box is responsible for the secondary cable zero line by the manufacture factory, PE line connection, be responsible for the cable zero line of equipment by site construction personnel, the connection of PE line, all need connect to on the main row, its wiring is safe, pleasing to the eye, it is horizontal and straight vertical, the level is clear, reduce copper bar preparation quantity that punches a hole, be convenient for construction, overhaul, and improve work efficiency.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A novel secondary zero-ground wire wiring device of a low-voltage switch cabinet comprises the low-voltage switch cabinet and a fixed beam arranged below the rear part of the low-voltage switch cabinet, and is characterized in that a box body is arranged in the low-voltage switch cabinet and on the fixed beam, an insulating plate is arranged in the middle of the box body along the length direction of the box body, and the box body is divided into an upper part and a lower part; the upper part and the lower part are respectively provided with a wire inlet and n wire outlets, the wire inlet at the upper part is a zero line inlet, the wire inlet at the lower part is a PE wire inlet, the bottoms of the upper part and the lower part are respectively provided with a bottom plate, the bottom plates are copper sheets with the thickness of 3mm and are arranged along the length direction of the box body; the bottom plate is provided with two rows of wiring ports with n single phases, and a total zero line is connected to the wiring ports respectively after being connected to the upper bottom plate and extends out of a wire outlet at the upper part of the box body; a main PE wire is connected to the lower bottom plate and then respectively connected to the lower n-phase wiring ports and extends out of the lower wire outlet of the box body.

2. The novel secondary zero-ground wiring device of the low-voltage switch cabinet as claimed in claim 1, wherein n is greater than or equal to 2 and less than or equal to 20.

3. The novel secondary zero-earth wire connection device of the low-voltage switch cabinet as claimed in claim 1, further comprising a box cover, wherein the box cover is fixed on the box body, and the box cover is provided with a mounting hole matched with the box body.

4. The novel secondary zero-earth wiring device of the low-voltage switch cabinet as claimed in claim 1, wherein the outlets are respectively arranged at the upper part and the lower part of the box body.

5. The novel secondary zero-ground wiring device of the low-voltage switch cabinet as claimed in claim 1, wherein the insulation board is isolated by polycarbonate insulation material.