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Type&Material of Electric Cabinet Casing
Jul 05, 2018

The type and material selection of the enclosure type of the electric cabinet


The electrical cabinet is the electrical or electronic device used to install switches, knobs and displays, as well as cabinets that protect the user from electric shock and protect the content from the environment. The enclosure is the only component of the device that the user sees. It is designed to meet its utilitarian requirements. And can be satisfactory. Regulations can specify the characteristics and performance of electrical equipment enclosures in hazardous areas such as petrochemical plants or coal mines. Electronic packaging may impose many thermal requirements on the chassis, radio frequency interference and electrostatic discharge protection, as well as functionality, aesthetics, and commercial limitations.


In the United States, the National Electrical Manufacturers Association (NEMA) has issued NEMA enclosure type standards for the performance of various electrical cabinets. The NEMA standard covers corrosion resistance, rain and submersion. For IEC member countries, the standard IEC 60529 classifies the enclosure's entry protection rating (IPCodes).


Electrical cabinets are usually made of hard plastic, metal, especially stainless steel, carbon steel and aluminum. Steel cabinets can be painted or galvanized. Equipment for mass production usually has a custom casing, but the standardized casing is custom made. Or produced in small batch production equipment. For non-metallic enclosures, ABS plastics are only suitable for indoor applications requiring low NEMA ratings (1 or 2) and are not suitable for harsh environments. For NEMA 3 and above polycarbonates, glass fiber reinforced polycarbonate and fiberglass boxes are used, and gaskets are used to ensure a dry, dust-free area inside the box.


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