CN202434970U - Direct current switching cabinet for photovoltaic inverter - Google Patents

Abstract

The utility model relates to a general equipment of a solar power generation system, in particular to a novel direct current switching cabinet for a photovoltaic inverter. The control cabinet consists of a cabinet body, a cabinet door and copper bars installed inside. The electrical control cabinet adopts a double-door cabinet structure, and the cabinet door is equipped with two detachable filter screens; there are lifting screws on the top of the cabinet body, and the cabinet body is installed by hanging, and the cables enter and exit through the wire holes at the bottom of the cabinet body; The rows are arranged side by side and connected two by two by connecting copper bars, which can meet the switching requirements of multiple external devices. The overall layout of the utility model is compact, convenient for transportation and installation, and has strong practicability.

Description

A DC switching cabinet for photovoltaic inverters

technical field

The utility model belongs to the technical field of solar power generation, and in particular relates to a new DC transfer cabinet for photovoltaic inverters.

Background technique

As a clean and renewable energy, solar energy has been paid more and more attention by countries all over the world. Since the current generated by the photovoltaic power generation system is direct current, the direct current must be converted into alternating current through an inverter. Therefore, the inverter plays a pivotal role in the solar power generation system. The connection between the output of the solar panel and the inverter usually needs to pass through a DC incoming cabinet. At present, my country's photovoltaics mainly use medium and small power inverters below 500kW, which often require two or more inverters to work in parallel. At this time, the output of solar panels to the inverter is often inconvenient to connect. Insufficient terminals and other problems.

Contents of the invention

In order to solve the technical problems such as the connection and wiring between the existing photovoltaic inverter and external equipment, and aiming at the above shortcomings, the utility model provides a DC transfer cabinet for photovoltaic inverter, which is characterized in that the overall layout of the cabinet is reasonable, Convenient wiring; compact structure, simple appearance; easy installation, safe and reliable.

The technical scheme that the utility model takes for realizing the above object is as follows:

1. The utility model has a compact structure and a simple appearance, and the specific size is 1200/400/2000 (length/width/height). The cabinet door is provided with a filter (2) and a cylinder lock (3), the material of the cabinet door (4) and the cabinet body (9) is steel plate, and the contact part is provided with a sealing material. In terms of hoisting and transportation, the design of hanging installation and fixing is adopted. There are lifting screws (1) on both sides of the upper part of the control cabinet, which are installed and fixed by vertical suspension. Fully guarantee the convenience, safety and reliability of the installation, transportation and operation of the cabinet.

2. The design of the internal copper bar of the utility model is simple and reasonable, which is convenient for connection and installation. The copper bars (5) inside the cabinet are fixed on the installation steel plate (8) through the bus bar bracket (7), and the copper bars are connected through the connecting copper bars (6). The cabinet body is equipped with a grounding copper bar (11), which is installed and fixed at the bottom of the cabinet body through a grounding copper bar bracket (10). In addition, a cable hole (12) is provided on the bottom surface of the cabinet to facilitate cable access.

Description of drawings

Fig. 1 is the front structural representation of the utility model;

Fig. 2 is a schematic diagram of the internal structure of the utility model;

Fig. 3 is a left view structural representation of the utility model;

Fig. 4 is a structural schematic diagram of the utility model viewed from above.

Detailed ways

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the utility model is composed of a cabinet body, a cabinet door and copper bars installed inside; the cabinet door is equipped with two filter screens (2) to meet the heat dissipation requirements of the cabinet body ;

Suspension installation design is adopted, and there are lifting screws (1) on both sides of the upper part of the control cabinet, which adopts suspension installation. The bottom surface of the cabinet body is equipped with wire passing holes (12), which are convenient and safe for wiring.

The two sets of copper bars (5) in the cabinet of the cabinet body are fixed on the installation steel plate (8) through the bus bar bracket (7), and each set of copper bars has two copper bars connected by connecting copper bars (6). The grounding copper bar (11) is installed and fixed on the bottom of the cabinet through the grounding copper bar bracket (10).

The beneficial effects and advantages of the utility model are: the hanging installation method is adopted, which is convenient for installation and wiring; High); the design of the cabinet is simple and practical, safe and convenient, and it is convenient for the connection and wiring of external cables.

Claims (3)

1. a photovoltaic DC-to-AC converter is with the direct current cabinet of transferring, and it is characterized in that: said electrical interconnecting cabinet adopts two-door cabinet type structure, and the cabinet door can outwards be opened; Both sides, cabinet top are provided with lifting screw (1), adopt hang to install; Establish rotating handles with lock (3) on the switching cabinet cabinet door; On the cabinet cabinet cabinet door two screen packs (2) are housed; Bottom of cabinet bulk is provided with cable cable-through hole (12); Cabinet inside is equipped with four copper bars (5) side by side, to satisfy the direct current inlet wire connection requirement of many inverters.

2. a kind of photovoltaic DC-to-AC converter according to claim 1 is characterized in that with the direct current cabinet of transferring cabinet overall dimension length/width/height is 1200mm/400mm/2000mm.

3. a kind of photovoltaic DC-to-AC converter according to claim 1 is characterized in that with the direct current cabinet of transferring: two groups of copper bars (5) are fixed on through busbar support (7) and install on the steel plate (8), and every group of copper bar has two, connect through connecting copper bar (6).

Images