What is UL-62?

UL-62 is a technical standard established by Underwriters Laboratories, which is an independent safety certification organization. It specifically deals with the requirements for flexible cords and cables, including their construction, materials, and electrical performance. This standard ensures that these cords and cables are safe to use in various applications.

Construction and Materials

The construction and materials used in UL-62 compliant cords and cables play a crucial role in their safety and performance. These cords are typically made up of multiple conductors, insulation, fillers, and protective outer jackets. Conductors can be composed of various metals, such as copper or aluminum, while insulation materials can be PVC (Polyvinyl Chloride) or other thermoplastic compounds. Fillers are used to improve flexibility and strength, while the outer jackets provide additional protection against physical and environmental stresses.

Electrical Performance

UL-62 sets forth specific requirements for electrical performance to ensure safe and reliable operation of flexible cords and cables. These performance tests include voltage withstand, conductor resistance, insulation resistance, and grounding continuity. Voltage withstand tests verify the cord's ability to withstand specified voltage levels without breakdown or excessive leakage current. Conductor resistance tests check the electrical conductivity of the cord, while insulation resistance tests evaluate its insulation properties. Grounding continuity tests determine if the grounding conductor is continuous along the length of the cord.

Applications and Importance

UL-62 compliant cords and cables find applications in a wide range of industries, including consumer electronics, appliances, power tools, medical devices, and industrial equipment. The certification ensures that these cords meet stringent safety standards and are suitable for use in demanding environments. UL-62 compliance provides peace of mind to manufacturers, installers, and end-users by ensuring that electrical cords and cables are safe, reliable, and fulfill their intended purpose without posing any hazards.