CN213243233U

CN213243233U - Alternating current low-voltage power distribution cabinet

Info

Publication number: CN213243233U
Application number: CN202022570974.7U
Authority: CN
Inventors: 宋光德; 张继华
Original assignee: Shandong Wanrun Electric Co ltd
Current assignee: Shandong Wanrun Electric Co ltd
Priority date: 2020-11-07
Filing date: 2020-11-07
Publication date: 2021-05-18
Anticipated expiration: 2030-11-07

Abstract

The utility model discloses an AC low-voltage power distribution cabinet belongs to switch board technical field, include the cabinet body and install internal sword switch, measurement mutual-inductor and two contactors of cabinet, the sword switch with be connected with the copper bar between the contactor, the copper bar passes measurement mutual-inductor's interlude hole, this design can avoid leading to the condition of copper line interlude difficulty because of measurement mutual-inductor's interlude hole is small on the average, reduces the degree of difficulty of measuring the mutual-inductor and wearing the core, has reduced the equipment degree of difficulty of switch board.

Description

Alternating current low-voltage power distribution cabinet

Technical Field

The utility model belongs to the technical field of the switch board, concretely relates to alternating current low voltage power distribution cabinet.

Background

The power distribution cabinet is used as an important link of the whole power system and bears the important work of electric energy control and distribution. The switch equipment, the measuring instrument, the protective electrical equipment and the auxiliary equipment are assembled in a closed or semi-closed metal cabinet or on a screen of the power distribution cabinet to form a low-voltage power distribution cabinet, which is used for reasonably distributing electric energy, is convenient for opening and closing the circuit, has higher safety protection level and can visually display the conduction state of the circuit.

The conventional switch board has the following disadvantages:

1. the knife switch is connected with the contactor through a copper wire, a core penetrating hole of the metering transformer between the contactor and the knife switch is small, and the core penetrating is difficult due to the fact that the copper wire is thick when the metering transformer is used;

2. only one lower zero row is arranged, the upper zero row is directly connected to the lower zero row through a zero line, a core-penetrating zero-sequence mutual inductor is needed for a client to detect the zero line electric leakage condition, and when the client does not know how to penetrate the core or the core-penetrating direction is wrong, danger is caused to the client;

3. current transformer installs in isolator's below, needs the customer to pass current transformer earlier with the cable and be connected to isolator again on, because the customer cable is big partially, can lead to current transformer unable cross the core, and current transformer only wears a looks live wire, can lead to current transformer not have the registration when the customer has worn the three-phase live wire, unable normal display circuit state.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the utility model provides an AC low-voltage power distribution cabinet reduces the equipment degree of difficulty, does not need the customer oneself to wear the core, improves the power consumption safety.

In order to solve the technical problem, the technical scheme of the utility model is that:

the utility model provides an AC low-voltage power distribution cabinet, includes the cabinet body and installs internal sword switch, measurement mutual-inductor and two contactors of cabinet, the sword switch with be connected with the copper bar between the contactor, the copper bar passes measurement mutual-inductor's cross core hole.

Furthermore, an upper zero row and two lower zero rows are arranged in the cabinet body, two zero sequence transformers are arranged between the two contactors and the two lower zero rows, the upper zero row is connected with the two lower zero rows through two zero lines respectively, and the two zero lines penetrate through core penetrating holes corresponding to the zero sequence transformers respectively.

Furthermore, insulators are connected between the upper zero row and the lower zero row and the frame of the cabinet body respectively.

Furthermore, two isolating switches are arranged in the cabinet body, a three-phase live wire is correspondingly connected between the contactor and the two isolating switches, and the three-phase live wire penetrates through a core penetrating hole corresponding to the zero sequence transformer.

Furthermore, two current transformers are arranged between the zero sequence transformer and the lower zero row, and one phase of the live wire between the contactor and the isolating switch penetrates through the core penetrating hole corresponding to the current transformers.

After the technical scheme is adopted, the beneficial effects of the utility model are that:

because the utility model discloses an AC low-voltage power distribution cabinet includes the cabinet body and installs sword switch, measurement mutual-inductor and two contactors in the cabinet body, is connected with the copper bar between sword switch and the contactor, and the copper bar passes measurement mutual-inductor's interlude hole, can avoid reducing the degree of difficulty of measurement mutual-inductor interlude because of the condition that the interlude hole of measurement mutual-inductor leads to the copper line to wear the core difficulty slightly, has reduced the equipment degree of difficulty of switch board.

Drawings

Fig. 1 is a schematic structural diagram of the ac low-voltage power distribution cabinet of the present invention;

in the figure, 1-cabinet body, 2-knife switch, 3-copper bar, 4-metering mutual inductor, 5-contactor, 6-zero sequence mutual inductor, 7-current mutual inductor, 8-isolation switch, 9-upper zero row, 10-lower zero row, 11-zero line, 12-live wire and 13-insulator.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

All directions referred to in the present specification are based on the drawings, and represent relative positional relationships only, and do not represent absolute positional relationships.

As shown in figure 1, an alternating current low-voltage power distribution cabinet comprises a cabinet body 1, a knife switch 2, a metering mutual inductor 4 and two contactors 5, wherein the knife switch 2, the metering mutual inductor 4 and the two contactors 5 are installed in the cabinet body 1, a copper bar 3 is connected between the knife switch 2 and the contactors 5, and the copper bar 3 penetrates through a core penetrating hole of the metering mutual inductor 4. The situation that the copper wire is difficult to penetrate due to the fact that the core penetrating hole of the metering mutual inductor 4 is small is avoided, the difficulty of penetrating the core of the metering mutual inductor 4 is reduced, and the assembling difficulty of a power distribution cabinet is reduced.

As shown in fig. 1, an upper zero row 9 and two lower zero rows 10 are disposed in the cabinet body 1, two zero sequence transformers 6 are disposed between the two contactors 5 and the two lower zero rows 10, the upper zero row 9 is connected with the two lower zero rows 10 through two zero lines 11, and the two zero lines 11 penetrate through core through holes of the corresponding zero sequence transformers 6. Insulators 13 are respectively connected between the upper zero row 9 and the lower zero row 10 and the frame of the cabinet body 1, and the insulators 13 are used for supporting the upper zero row 9 or the lower zero row 10 to be insulated from the frame of the cabinet body 1. The core-penetrating zero sequence transformer 6 is not needed for a client, so that the danger caused when the client does not know how to penetrate the core or the core-penetrating direction is wrong is avoided, and the electricity utilization safety of the client is improved.

As shown in fig. 1, two isolating switches 8 are arranged in the cabinet body 1, a three-phase live wire 12 is correspondingly connected between the two contactors 5 and the two isolating switches 8, and the three-phase live wire 12 passes through a core-through hole of the corresponding zero sequence transformer 6. Two current transformers 7 are arranged between the zero sequence transformer 6 and the lower zero row 10, and a phase live wire 12 between the contactor 5 and the isolating switch 8 penetrates through a core penetrating hole of the corresponding current transformer 7. The core penetrating current transformer 7 of a client is not needed, the condition that the core cannot be penetrated due to large cables of the client and the current transformer 7 does not have the number of readings due to excessive core penetrating of the client is avoided, and the client only needs to connect the cables to the isolating switch 8 and the lower zero row 10, so that the client can install the power distribution cabinet more conveniently.

The utility model discloses an AC low voltage power distribution cabinet is through being connected the copper bar between knife switch and contactor to make the copper bar pass the interlude hole of measurement mutual-inductor, avoid because of the circumstances that the interlude hole of measurement mutual-inductor leads to the copper line to wear the core difficulty small on the average, reduce the degree of difficulty of measuring the mutual-inductor and worn the core, reduced the equipment degree of difficulty of switch board.

Although specific embodiments of the present invention have been described above, it should be understood by those skilled in the art that the described embodiments are only some of the embodiments of the present invention, rather than all embodiments, which are given by way of illustration only, and the scope of the present invention is defined by the appended claims. Without any inventive step, those skilled in the art can make various changes or modifications to the embodiments without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides an AC low-voltage power distribution cabinet, includes the cabinet body and installs internal sword switch, measurement mutual-inductor and two contactors of cabinet, its characterized in that, the sword switch with be connected with the copper bar between the contactor, the copper bar passes measurement mutual-inductor's cross core hole.

2. The AC low-voltage power distribution cabinet according to claim 1, wherein an upper zero row and two lower zero rows are arranged in the cabinet body, two zero-sequence transformers are arranged between the two contactors and the two lower zero rows, the upper zero row is connected with the two lower zero rows through two zero lines, and the two zero lines respectively penetrate through core through holes corresponding to the zero-sequence transformers.

3. The AC low-voltage power distribution cabinet according to claim 2, wherein insulators are respectively connected between the upper zero row and the lower zero row and the frame of the cabinet body.

4. The alternating-current low-voltage power distribution cabinet according to claim 2 or 3, wherein two isolating switches are arranged in the cabinet body, three-phase live wires are correspondingly connected between the two contactors and the two isolating switches, and the three-phase live wires penetrate through core penetrating holes corresponding to the zero sequence mutual inductors.

5. The AC low-voltage power distribution cabinet according to claim 4, wherein two current transformers are arranged between the zero sequence transformer and the lower zero row, and one phase of the live wire between the contactor and the isolating switch passes through a core penetrating hole corresponding to the current transformers.