What is BS EN ISO 6722-9:2018?

The BS EN ISO 6722-9:2018 is a technical standard that specifies requirements for single-core and multi-core cables used in road vehicles. It defines the material, construction, performance, and test requirements for these cables. The standard ensures the safe and reliable functioning of electrical systems in vehicles by providing guidelines for manufacturers, engineers, and technicians.

Material and Construction

The BS EN ISO 6722-9:2018 standard outlines the specific materials and construction techniques that need to be followed when designing and manufacturing vehicle cables. It mandates the use of materials that are resistant to high temperatures, abrasion, and chemical exposure. For example, the insulation and sheathing materials should be able to withstand both extreme heat and cold conditions, as well as resist oil, fuel, and coolant fluids commonly found in vehicles. The cables should also have appropriate mechanical properties to endure the vibrations, bending, and twisting that can occur in vehicle applications.

Performance Requirements

In order to meet the BS EN ISO 6722-9:2018 standard, the cables must fulfill certain performance criteria. These include electrical conductivity, voltage rating, insulation resistance, and cable dimensions. The electrical conductivity ensures efficient transmission of electrical signals and currents, while the voltage rating determines the maximum voltage that the cable can safely handle. Insulation resistance refers to the ability of the cable's insulation material to prevent the leakage of current, thus avoiding potential short circuits or electrical failures. The standard also specifies dimensional requirements such as cable diameter and wall thickness to ensure compatibility with existing connectors and wiring systems in vehicles.

Testing and Compliance

To ensure compliance with the BS EN ISO 6722-9:2018 standard, manufacturers need to conduct various tests on their cables. These tests include visual inspection, dimensional measurement, conductor resistance, bending, impact, and temperature cycling tests. Visual inspection involves examining the appearance of the cable for any defects or irregularities. Dimensional measurement ensures that the cable meets the specified dimensions as per the standard. The conductor resistance test verifies that the electrical conductivity of the cable is within the acceptable range. Bending, impact, and temperature cycling tests evaluate the mechanical endurance and reliability of the cable under different conditions. Only cables that pass these tests can be considered compliant with the standard and used in vehicles.