CN221408429U

CN221408429U - Photovoltaic system direct current side lightning arrester base

Info

Publication number: CN221408429U
Application number: CN202322819571.5U
Authority: CN
Inventors: 李红斌
Original assignee: Zhejiang Leitai Electrical Co ltd
Current assignee: Zhejiang Leitai Electrical Co ltd
Priority date: 2023-10-20
Filing date: 2023-10-20
Publication date: 2024-07-23
Anticipated expiration: 2033-10-20

Abstract

The utility model discloses a direct-current side lightning arrester base of a photovoltaic system, wherein a direct-current wiring terminal DC and a lightning protection grounding terminal PE are arranged on the base, and the direct-current wiring terminal DC and the lightning protection grounding terminal PE are respectively arranged on two sides of the base. According to the utility model, the direct-current wiring terminal and the lightning protection grounding terminal are arranged on two sides of the base, so that the high-voltage side wiring and the low-voltage side wiring are separated during wiring, and the electrical safety can be well ensured.

Description

Photovoltaic system direct current side lightning arrester base

Technical Field

The utility model relates to the technical field of photovoltaic direct-current power supply safety protection, in particular to a photovoltaic system direct-current side lightning arrester base.

Background

At present, the direct current side lightning arrester base in the photovoltaic system is formed by splicing a plurality of rivets on a base with the width of 18mm, for example, 36mm, 54mm and 72mm wide bases are spliced through bus bars, the splicing mode corresponds to a plurality of places with high voltage, for example, 1500V and 1800V, the electric gap and the safety distance cannot meet the requirements, and the lightning protection level for high voltage is lower. As shown in FIG. 1, a schematic diagram of a 54mm wide base formed by splicing 3 conventional 18mm wide bases is adopted, and it can be seen from the diagram that DC+/DC-/PE wiring terminals are located on the same side of the base, so that some potential safety hazards exist when the base structure is wired on site, the high-voltage side and low-voltage side wiring are not guaranteed to be separated, the wiring of the wiring grooves is also guaranteed, all the lines of the base after being spliced are in the same wiring groove, and the electric safety requirement is obviously reduced by adopting the wiring mode, so that the protection capability of the whole lightning protection device is weakened, and the electric safety is lower.

Disclosure of utility model

Aiming at the defects in the prior art, the utility model provides the direct-current side lightning arrester base of the photovoltaic system, which is characterized in that a direct-current wiring terminal and a lightning protection grounding terminal are arranged in a distinguishing way, so that the high-voltage side wiring and the low-voltage side wiring of the photovoltaic system are separated, the electrical safety is ensured, and the photovoltaic system has higher safety protection capability.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

A Direct Current (DC) side lightning arrester base of a photovoltaic system is provided with a DC wiring terminal DC and a lightning protection grounding terminal PE, and the DC wiring terminal DC and the lightning protection grounding terminal PE are respectively arranged on two sides of the base.

Further, a U-shaped or Y-shaped base structure is formed between the direct current wiring terminal DC and the lightning protection grounding terminal PE on the base.

Further, two sets of direct current binding post DC+ and two sets of direct current binding post DC-are equipped with to the same side position of base, another opposite side position of base is equipped with at least one set of lightning protection ground terminal PE, form double-circuit U type base structure between direct current binding post DC and lightning protection ground terminal PE.

Preferably, the U-shaped base structure, the Y-shaped base structure and the double-loop U-shaped base structure are all integrally formed structures, the length of the U-shaped base structure is 83mm, the U-shaped base structure is consistent with the length of the miniature circuit breaker, and the bus bars with unified specifications are more conveniently used during assembly.

Further preferably, the width of the U-shaped base structure is 36mm, the width of the Y-shaped base structure is 54mm, and the width of the double-loop U-shaped base structure is 72mm.

Furthermore, a remote signaling interface is also arranged on the base.

The technical scheme of the utility model has the following beneficial effects:

A. according to the utility model, the direct-current wiring terminal and the lightning protection grounding terminal are arranged on two sides of the base, so that the wiring of the high-voltage side wiring and the wiring of the low-voltage side wiring are separated, and the electrical safety can be well ensured;

B. The base adopts an integrated structure, the integrated base structure can ensure that the base has larger creepage distance and safety clearance, and the base can be applied to a 1800V high-voltage environment.

Drawings

In order to more clearly illustrate the embodiments of the present utility model, the drawings that are required for the embodiments will be briefly described, and it will be apparent that the drawings in the following description are some embodiments of the present utility model and that other drawings may be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a spliced Y-shaped base used in the prior art;

FIG. 2 is a diagram of a U-shaped base structure provided by the utility model;

FIG. 3 is a diagram of a Y-shaped base structure provided by the present utility model;

FIG. 4 is a block diagram of a dual loop U-shaped base provided by the present utility model;

fig. 5 is a side view of a base provided by the present utility model.

Reference numerals illustrate:

1-base, 11-direct current binding post DC, 12-lightning protection ground terminal PE.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 2 to 5, the utility model provides a direct current side lightning arrester base 1 of a photovoltaic system, wherein a direct current wiring terminal DC 11 and a lightning protection grounding terminal PE 12 are arranged on the base 1, and the direct current wiring terminal DC 11 and the lightning protection grounding terminal PE 12 are respectively arranged on two sides of the base 1. By the arrangement mode, the high-voltage side wiring and the low-voltage side wiring can be separated, namely, the high-voltage side wiring and the low-voltage side wiring are respectively arranged in different wiring grooves, so that the electrical safety is ensured, and the base has the protection capability on a high-voltage photovoltaic system.

According to the different wiring modes of the base, as shown in fig. 2, the upper side of the base is respectively provided with a direct current wiring terminal DC+/DC-, and the lower side is provided with a lightning protection grounding terminal PE, so that a U-shaped base structure is formed; the lightning-proof grounding terminal PE in FIG. 3 is arranged at the opposite side of the DC connection terminal DC+/DC-to form a Y-shaped base structure.

As shown in fig. 4, two groups of direct current wiring terminals DC+ and two groups of direct current wiring terminals DC-are arranged at the same side position of the base, namely DC1 < + >/DC 2 < - >/DC 1 < - >, are sequentially arranged from left to right, at least one group of lightning protection grounding terminals PE are arranged at the other opposite side position of the base, two grounding terminals PE are arranged in the figure, a double-loop U-shaped base structure is formed between the direct current wiring terminals DC and the lightning protection grounding terminals PE, and the double-loop U-shaped base structure can simultaneously protect two loops of photovoltaic direct current power sources.

Of course, the U-shaped base structure, the Y-shaped base structure and the double-loop U-shaped base structure provided by the utility model are all integrally formed, the length of the U-shaped base structure is 83mm, the U-shaped base structure is consistent with the length of a miniature circuit breaker, and the busbar with uniform specification is more convenient to assemble.

The width of the U-shaped base structure is 36mm, the width of the Y-shaped base structure is 54mm, the width of the double-loop U-shaped base structure is 72mm, the module butt joint size is consistent with the size of the conventional lightning protection module, and the lightning protection module is more convenient to install. In addition, the utility model can also set a remote signaling interface on the base to realize more intelligent connection and signal output.

Meanwhile, the utility model has flexible variability, and modes such as 2P, 1+NPE, 3P, 4P, 3+NPE and the like of the alternating current low-voltage distribution system can be flexibly applied through different combinations of the wiring terminals and different combinations of the internal connecting pieces.

The utility model is applicable to the prior art where none of the details are mentioned.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While obvious variations or modifications are contemplated as falling within the scope of the present utility model.

Claims

1. The direct-current side lightning arrester base of the photovoltaic system is provided with a direct-current wiring terminal DC and a lightning protection grounding terminal PE, and is characterized in that the direct-current wiring terminal DC and the lightning protection grounding terminal PE are respectively arranged on two sides of the base;

and a U-shaped base structure or a Y-shaped base structure is formed between the DC wiring terminal DC and the lightning-proof grounding terminal PE on the base.

2. The photovoltaic system direct current side lightning arrester base according to claim 1, wherein the base width is 72mm, two sets of direct current wiring terminals dc+ and two sets of direct current wiring terminals DC-are arranged at the same side position of the base, at least one set of lightning protection grounding terminals PE are arranged at the other opposite side position of the base, and a double-loop U-shaped base structure is formed between the direct current wiring terminals DC and the lightning protection grounding terminals PE.

3. The direct current side lightning arrester base of the photovoltaic system according to claim 1 or 2, wherein the U-shaped base structure, the Y-shaped base structure and the double-loop U-shaped base structure are all integrally formed, the length of the U-shaped base structure is 83mm, the U-shaped base structure is consistent with the length of a miniature circuit breaker, and a bus bar with uniform specification is more conveniently assembled.

4. The photovoltaic system dc side lightning protection device mount of claim 3 wherein the U-shaped mount structure has a width of 36mm, the Y-shaped mount structure has a width of 54mm, and the dual loop U-shaped mount structure has a width of 72mm.

5. The photovoltaic system direct current side lightning arrester base of claim 4 further comprising a remote signaling interface.