Flexible Cables With High Bending Life and Fatigue Resistance

DIN VDE 0250 is associated with German requirements for insulated wires and cables, especially rubber-insulated and elastomeric constructions used in industrial, mobile and demanding environments. The number is a standards family reference; the engineering meaning comes from the applicable part, cable designation and product construction. In practice, a project team may also need to coordinate VDE 0295 / IEC 60228 conductor classes, VDE 0207 compound designations, EN/IEC voltage standards, fire tests, EMC requirements and the local installation code. The VDE system exists to make a cable designation testable. It connects a material and construction to measurable requirements such as conductor resistance, insulation thickness, mechanical strength, elongation, thermal ageing, ozone/ oil behaviour, cold flexibility, flame performance and electrical withstand. That connection is why a correct designation is more valuable than a marketing phrase such as “heavy duty” or “extra flexible.”