What is IEC 60317-2:2021?

IEC 60317-2:2021 is an international standard that specifies the requirements for round copper winding wires used in electrical machines, including motors and transformers. This standard defines the dimensions, mechanical properties, electrical properties, and testing methods for these wires.

Dimensions and Mechanical Properties

The standard provides detailed guidelines on the dimensions of the copper wires, including their diameter, tolerances, and form. It also specifies the different classes of wires based on their mechanical properties, such as elongation, tensile strength, and flexibility. These properties ensure that the wires can withstand the mechanical stresses and strains during operation without breaking or deforming.

Electrical Properties

IEC 60317-2:2021 lays down the electrical properties that copper wires used in electrical machines should possess. This includes parameters like resistivity, temperature coefficient of resistance, and insulation resistance. The standard ensures that the wires have the necessary conductivity to carry current efficiently and effectively while minimizing energy loss and heat generation. It also addresses insulation requirements to prevent leakage currents and short circuits.

Testing Methods

To ensure compliance with the standard, several testing methods are described in IEC 60317-2:2021. These include tests for dimensional accuracy, mechanical properties, and electrical properties. The standard provides clear instructions on how to perform these tests and the acceptable limits for each parameter. By conducting these tests, manufacturers can verify the quality and consistency of their copper wires, ensuring they meet the specified requirements.