CN219717516U

CN219717516U - Contact incoming line integrated power distribution cabinet

Info

Publication number: CN219717516U
Application number: CN202320666397.2U
Authority: CN
Inventors: 佘洁美; 曾孟阳; 李禹铭; 顾怀超; 王光磊
Original assignee: Tellhow Shenzhen Electric Technologies Co ltd
Current assignee: Tellhow Shenzhen Electric Technologies Co ltd
Priority date: 2023-03-23
Filing date: 2023-03-23
Publication date: 2023-09-19
Anticipated expiration: 2033-03-23

Abstract

An integrated power distribution cabinet for communication incoming lines, comprising; the wire inlet connection cabinet is internally provided with a first transformer, the first transformer is connected with a first input end, the first transformer is also connected with a first current transformer, the first current transformer is connected with a first wire inlet switch 1QF, the first wire inlet switch 1QF is connected with a second input end and is also connected with a first bus, and the first bus supplies power for each loop wire inlet; the first incoming line switch 1QF is further connected with the interconnection switch 3QF, the interconnection switch 3QF is connected with a second current transformer, the second current transformer is connected with a second bus, the second incoming line switch further comprises an incoming line cabinet connected with the second bus, higher timeliness is brought to the operation and maintenance aspects of field personnel, the operations such as power reversing and the like are only completed on two cabinet bodies, the operation is performed by running on three cabinet bodies like the traditional operation mode, and the operation time is greatly saved.

Description

Contact incoming line integrated power distribution cabinet

Technical Field

The utility model relates to the field of power distribution cabinets, in particular to an integral power distribution cabinet with a connection incoming line.

Background

In a low-voltage power distribution cabinet, a low-voltage power distribution system usually adopts a single bus segment power supply mode, and a two-inlet-wire one-contact power distribution system is the choice of 80% of power distribution users; in the previous design scheme, the incoming line cabinet and the connecting cabinet are respectively installed by adopting various cabinets, the urban land is in tension, the power distribution cabinet is more, the land resources are wasted very much, and the input industrial consumables are increased, so that nonferrous metals are wasted.

Disclosure of Invention

In order to solve the problems, the technical scheme provides an integral power distribution cabinet with a connection incoming line, so that the integration and integration of the incoming line cabinet and the connection cabinet are achieved, the space is saved, the maintenance is convenient, the incoming line circuit breaker and the connection circuit breaker are installed in a complete cabinet body, the two purposes of one cabinet are achieved, centralized control is achieved, great convenience is brought to the aspects of control and maintenance of operators, and meanwhile, consumable materials such as land resources and nonferrous metals are saved.

In order to achieve the above purpose, the technical scheme is as follows:

an integrated power distribution cabinet for communication incoming lines, comprising;

the wire inlet connection cabinet is internally provided with a first transformer, the first transformer is connected with a first input end, the first transformer is also connected with a first current transformer, the first current transformer is connected with a first wire inlet switch 1QF, the first wire inlet switch 1QF is connected with a second input end and is also connected with a first bus, and the first bus supplies power for each loop wire inlet;

the first incoming line switch 1QF is further connected with a contact switch 3QF, the contact switch 3QF is connected with a second current transformer, the second current transformer is connected with a second bus, and the incoming line switch further comprises an incoming line cabinet connected with the second bus.

In some embodiments, the incoming cabinet comprises a third current transformer connected with the second busbar, the third current transformer is connected with a third input end, the third current transformer is connected with a second incoming switch 2QF, and the second incoming switch 2QF is connected with a second transformer.

In some embodiments, the tie switch 3QF is electrically connected to the second bus bar through a bus bar groove.

The utility model has the beneficial effects that:

according to the utility model, the traditional incoming line cabinet and the contact cabinet are effectively combined into the same cabinet body; the cabinet is convenient to maintain, and the installation space of the power distribution room is saved to the maximum limit;

the maintenance convenience is mainly realized in that: the operation and maintenance of field personnel are brought with higher timeliness, the operations such as power-down and the like are only completed on two cabinet bodies, and the operation is carried out by running on three cabinet bodies in a traditional operation mode, so that the operation time is greatly saved.

The installation space of the power distribution room is saved mainly by: the space of the single-sided cabinet body is fully utilized, and the contact cabinet of the distribution board is directly replaced by the contact incoming line; firstly, metal resources such as copper materials are saved; secondly, precious land resources occupied by the power distribution room are reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are required to be used in the description of the embodiments will be briefly described below.

FIG. 1 is a schematic diagram of a wiring structure of an embodiment of the present utility model;

fig. 2 is a copper bar routing diagram of the power distribution cabinet with the front panel removed according to an embodiment of the utility model;

fig. 3 is a top plan view of a power distribution cabinet according to an embodiment of the utility model.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The existing low-voltage distribution board has the problems that a complete set of incoming line cabinet and connecting cabinet are two cabinet bodies, each cabinet body uses a frame breaker, and metal resources such as copper materials are wasted firstly; secondly, the number of the cabinets is doubled, the occupied area is doubled, and the land resources are wasted;

in addition, after the number of the power distribution cabinets is increased, timeliness is low in field operation and maintenance, operations such as power reversal and the like can be finished on one cabinet body, the two cabinet bodies are required to be operated, and operation time is wasted.

The application is that two frame circuit breakers corresponding to incoming lines and connection are placed in a cabinet body, after the two frame circuit breakers are connected through a primary busbar, and the wiring of a secondary control loop is connected, the cabinet bodies with two functions are well fused into an incoming line connection integrated power distribution cabinet in depth, and the two problems are well solved;

meanwhile, in the effective space, the cabinet body is 800 mm wide and 1000 mm deep, and two high-current frame breakers are installed at the same time, so that the defect that the traditional power distribution cabinet cannot fully utilize the space of the effective cabinet body and cannot realize dual purposes of one cabinet is overcome.

Referring to fig. 1-3, an integrated power distribution cabinet for incoming line connection includes;

Further, the incoming line cabinet comprises a third current transformer connected with the second bus, the third current transformer is connected with a third input end, the third current transformer is connected with a second incoming line switch 2QF, and the second incoming line switch 2QF is connected with a second transformer.

Further, the tie switch 3QF is electrically connected to the second bus bar through a bus bar groove.

The components of the incoming line contact integrated power distribution cabinet are generally divided into the following two parts: structural member and electric component

The frame of the low-voltage cabinet body is assembled by thickened upright posts and cross beams in the aspect of structural members, a standard cabinet body with the width of 800-1000-2000 mm and the depth of 2000mm is assembled by adding a top plate, a front panel, a rear panel, a partition plate, a bus clamp, a mounting bracket, an insulating beam and the like, the cabinet body is sequentially divided into a cabinet top bus chamber, two frame breaker chambers in front of the cabinet and two vertical bus bar connecting chambers for connecting the bus bars of the frame breaker behind the cabinet from top to bottom, and vertical bus bar chambers on the side edges, bus clamps are arranged on the two sides and the level of a bus channel, the height of 475mm of a starting end box of the bus slot is added, and the closed metal incoming line bus bar switch cabinet body is assembled.

The electrical parts are arranged and fixed in the closed metal switch cabinet body by adopting two drawer type frame breakers (1QF+3QF), 6 current transformers (1 TAa-1 TAc, 3 TAa-3 TAc) and a surge protector, wherein a batch of switches are connected with copper bars, secondary control wires for controlling incoming wires and interconnecting switches, buttons, indicator lamps and other components, and the electrical parts are correspondingly connected with the secondary wires by the copper bars according to a certain principle, so that an integrated power distribution cabinet with an incoming wire function and an interconnecting function is formed;

the detailed implementation of the scheme in the cabinet body is as follows:

the two frame breaker chambers are fixedly provided with a wire inlet breaker 1QF and a connecting breaker 3QF, and a lower pile (a main copper bar wiring terminal of the wire inlet breaker) of the wire inlet breaker 1QF and a upper pile of the connecting breaker 3QF are electrically connected through horizontal buses (L11, L12, L13 and N); each horizontal busbar is electrically connected and then extends into a vertical busbar independent compartment with the net width of 150mm at the left side of the cabinet body, 4-phase busbars of NABC are sequentially distributed in the same vertical direction from back to front, and then the busbars extend upwards to a cabinet top busbar chamber and are connected with horizontal busbars (I-section busbars) of other feeder cabinets to provide power for each feeder circuit;

the upper pile of the incoming line breaker 1QF is connected with incoming line ABC vertical copper bars (1L 1, 1L2, 1L3 and N), 3-phase incoming line bars (1 TAa-1 TAc) of the ABC are directly and sequentially distributed at intervals of 110mm from back to front and horizontal intervals of 90mm from left to right, the incoming line bars are bent front of the cabinet and then extend upwards to a bus bar chamber at the top of the cabinet, the bus bar is broken before bending and used for installing a current transformer, the transformer is convenient to assemble and disassemble after the bus bar is broken, NABC is extended out of the right side of the cabinet body by the transverse copper bars and the incoming line bus bar of a power supply at the low voltage side of the transformer is convenient to connect with the incoming line copper bars;

the connecting breaker 3QF is connected with connecting NABC vertical copper bars (L21, L22, L23 and N), 4 phase connecting bars of NABC are sequentially arranged at the same vertical direction from left to right at the horizontal interval of 90mm, then the connecting vertical bars are close to the rear of the cabinet body and extend upwards to the bus bar chamber at the top of the cabinet, the bus bars are broken at the same height as the incoming copper bars for installing current transformers (3 TAa-3 TAc), the transformers are convenient to assemble and disassemble after the bus bars are broken, and the connecting bars can be connected with the section II bus bar through the dense bus duct of the initial end box after extending to the main bus bar chamber;

after the primary electric components in the cabinet are connected through the copper bars, the power supply loop path ((1 QF closed, 3QF open)) of the incoming line breaker of the incoming line contact cabinet is mainly connected with the main busbar of other feeder cabinets through the right main busbar incoming lines (1L 1, 1L2, 1L3 and N), the upper piles of the incoming line circuit breakers 1QF are connected with the main busbars of other feeder cabinets through the incoming line copper bars, the lower piles of the incoming line circuit breakers 1QF and the vertical busbars to the horizontal busbars (L11, L12, L13 and N), and power is supplied to all feeder lines;

the power supply return path of the interconnection breaker of the incoming line interconnection cabinet is that the electricity of the section II bus passes through vertical interconnection rows (L21, L22, L23 and N) behind the cabinet, the lower pile of the interconnection breaker 3QF passes through the upper pile of the interconnection breaker 3QF and the vertical bus to the main bus rows (L11, L12, L13 and N) of the horizontal bus connected with other feeder cabinets, and power is supplied to each feeder line; the path is that the section II bus supplies power to the section I bus (1 QF is opened and 3QF is closed), if the paths of the section I bus to the section II bus are the same, the current direction is just reversed; the premise of connecting power supply is that only one of the two incoming line breakers is closed, so that two paths of power supplies are prevented from running in parallel; the function is realized by simple electric interlocking of the switching-on loops of the circuit breakers connected with the two incoming lines;

and then, after the opening and closing coils and the energy storage loops of the respective circuit breakers are connected with the indicator lamps through secondary wires and control buttons according to the schematic diagram, the opening and closing loops of the respective circuit breakers are simply interlocked, and then the processing of the integrated power distribution cabinet with the inlet wire connected is completed, so that the dual-purpose function of one cabinet is realized.

The foregoing description of the preferred embodiments of the present utility model is not intended to limit the scope of the utility model, but rather is presented in the claims.

Claims

1. An integrated power distribution cabinet for a communication incoming line is characterized by comprising;

2. The integrated power distribution cabinet of claim 1, wherein: the wire inlet cabinet comprises a third current transformer connected with a second bus, the third current transformer is connected with a third input end, the third current transformer is connected with a second wire inlet switch 2QF, and the second wire inlet switch 2QF is connected with a second transformer.

3. The contact incoming line integrated power distribution cabinet according to claim 2, wherein: the interconnection switch 3QF is electrically connected with the second bus through a bus duct.