Along with the expanded size range, the 2023 edition also updated and the maximum DC resistance values for each conductor class. The standard now includes Milliken conductors (large, segmented conductors for very high power cables) alongside solid, stranded and flexible types. An informative annex provides temperature correction factors for resistance measurements and practical guidance on dimensional limits of circular conductors.
Flexible copper conductors for flexible cables (e.g., standard flexible wire). iec 60228 pdf free download
Rather than enforcing strict physical diameters for the overall conductor, IEC 60228 focuses primarily on the performance (resistance) and the maximum size of individual wires within the strand to ensure the desired flexibility is achieved. How to Access IEC 60228 Legally Along with the expanded size range, the 2023
Used in fixed power distribution networks, industrial wiring, and conduits where a moderate degree of flexibility is required during installation. Flexible copper conductors for flexible cables (e
IEC 60228 divides conductors into four distinct classes based on their flexibility and intended application:
Lightweight, cost-effective alternatives typically used in larger power distribution cables. 3. The Four Conductor Classes