A power distribution cabinet refers to a device used to control, protect and distribute electric energy in a power system.
It is usually composed of switchgear, protection equipment, measuring equipment, instruments, power supplies, etc. The main function of a power distribution cabinet is to input power into different loads and control and protect the current and voltage.
The role of a power distribution cabinet
1. Control power output
The power distribution cabinet is mainly responsible for inputting power into different loads and controlling the current and voltage. By controlling the opening and closing of switchgear, the power distribution cabinet can control the output of electric energy, thereby ensuring the safety and stability of the power system.
2. Protect the power system
The power distribution cabinet can not only control the output of electric energy, but also protect the power system. By installing protective equipment such as fuses, circuit breakers, etc., the power system can be protected from circuit faults and electrical faults.
3. Distribute power loads
The power distribution cabinet can distribute electric energy to different loads according to different load requirements. Through measuring equipment and instruments, the changes in current and voltage can be monitored in real time to ensure the balance and stability of the power load.
Common types
1. Low-voltage distribution cabinet
Low-voltage distribution cabinet refers to a distribution cabinet with a rated voltage not exceeding 1000V. It is usually used in power distribution systems in the industrial and construction fields to control and protect power loads.
2. Medium-voltage distribution cabinet
Medium-voltage distribution cabinet refers to a distribution cabinet with a rated voltage between 1kV and 35kV. It is usually used in small and medium-sized power plants, substations and other places to control and protect the power system and transmit power to different loads.
3. High-voltage distribution cabinet
High-voltage distribution cabinet refers to a distribution cabinet with a rated voltage of more than 35kV. It is usually used in large power systems to control and protect the power system and transmit power to different loads.
What materials are generally used for the outer shell of the distribution box
As the core component of the motor control center, the choice of shell material of the distribution cabinet directly affects the protection of internal components and the overall orderly installation. The shell not only bears the responsibility of protecting the components such as electric meters, switches, fuses, leakage protection, relays, etc. in the cabinet, but also is the key factor to ensure that the components and lines can be placed in the cabinet in an orderly manner. Next, let us reveal the mystery of the material of the distribution cabinet shell.
Common distribution cabinet shell materials
Cold-rolled sheet SPCC
Cold-rolled sheet SPCC is one of the commonly used shell materials. It is mainly used to make electroplating and paint parts, and is favored because of its low cost and easy molding. In addition, the thickness of this material usually does not exceed 3.2mm, and it is often used for electroplating and paint parts. Because of its low cost and easy molding, it is suitable for most distribution cabinets and meets the needs of most distribution cabinet shells.
Hot-rolled sheet SPCC
Hot-rolled sheet SPCC, whose thickness T is usually greater than or equal to 3.0mm, is also suitable for the production of electroplating and paint parts. Although it is low in cost, it is relatively difficult to mold. It is suitable for electroplating and paint parts, but it is difficult to mold and is often used for flat parts.
Copper
Copper, a material mainly used for conducting electricity, usually has surface treatments such as nickel plating, chrome plating or keeping the original color, but the corresponding cost is relatively high. Copper is mainly used as a conductive material, and the surface treatment is diverse, but the cost is relatively high.
Stainless steel
Stainless steel, a material widely used in many fields, usually does not require complex surface treatment, but its cost is relatively high. It has excellent rust and corrosion resistance, and is beautiful, durable and has good grounding properties. Stainless steel has become the market’s preferred choice due to its rust and corrosion resistance, although the cost is high.
Aluminum profiles
Aluminum profiles, with a complex cross-sectional structure, are widely used in various types of plug-in boxes. In terms of surface treatment, aluminum profiles are similar to aluminum plates. In addition, there are galvanized sheets SECC and SGCC to choose from, among which SECC electrolytic plates are divided into N materials and P materials. Generally, N materials are suitable for no surface treatment, but the cost is relatively high; while P materials are often used for spraying parts. Aluminum profiles are suitable for plug-in box applications, with complex cross-sectional structures and a variety of surface treatment options.
SMC composite material
SMC composite material, as the abbreviation of Sheet molding compound, is a sheet molding compound carefully made of GF (special yarn), UP (unsaturated resin), low shrinkage additives, MD (filler) and a variety of additives. It combines many excellent properties: chemical corrosion resistance, light weight and high strength, excellent fire retardancy, good heat resistance, low thermal conductivity, excellent anti-aging ability and long service life. SMC composite materials have the characteristics of chemical corrosion resistance, light weight and high strength, but the price is relatively high.
In the distribution cabinet industry, stainless steel shells have become the market’s preferred choice due to their excellent corrosion resistance, low rust resistance and beautiful appearance. However, although SMC composite materials, as a new material, have many excellent properties, such as chemical corrosion resistance, light weight and high strength, fire retardancy and more, their price is relatively high. When choosing the shell material, we need to comprehensively consider the application scenario and cost of the product. Of course, if you have large-scale customized distribution cabinet needs, you can choose to cooperate with Mulan Group. As a professional sheet metal cabinet manufacturer, Mulan Group is committed to providing customers with a variety of shell material options to meet the needs of different customers.
Here is our Custom sheet metal cabinet Display：
