IEC60228

IEC 60228 is an international standard published by the International Electrotechnical Commission (IEC). It specifies the classification of conductors based on their flexibility and defines the requirements for these conductors. The standard is primarily concerned with the construction of electrical cables used for power, control, and telecommunications.

The standard categorizes conductors into classes, with Class 1 representing solid conductors, Class 2 representing stranded conductors, Class 5 representing flexible conductors, and Class 6 representing highly flexible conductors. Each class is defined by its construction, number of strands, and the diameter of individual strands. This classification is crucial for selecting the appropriate conductor for a given application, considering factors like installation method, bending requirements, and vibration resistance.

IEC 60228 also sets out requirements for the dimensions and construction of these conductors. For stranded conductors, it specifies the nominal cross-sectional area and the maximum permissible resistance per unit length. These parameters ensure that the conductor can safely carry the intended electrical current without excessive heating or voltage drop. The standard is periodically reviewed and updated to reflect advancements in materials and manufacturing techniques. Compliance with IEC 60228 is often a requirement for cables to be used in various industries and regions worldwide, ensuring safety and interoperability.