ISO 6722 Road Vehicles - 60 V and 600 V Single Core Cables

The “ISO 6722 Road vehicles - 60 V and 600 V single-core cables” standard published by the International Standards Organization (ISO) consists of the following subsections published under the same title:

• The standard “ISO 6722-1 Part 1: Dimensions, test methods and requirements for cables with copper conductors” describes the dimensions, test methods and requirements for single-core 60 Volt cables intended for use in road vehicle applications where the nominal system voltage is (25 Volts DC or 60 Volts AC). It also describes additional test methods and requirements for 60 Volt cables intended for use in road vehicle applications where the nominal system voltage is (25 Volts DC or 600 Volts AC) to (600 Volts DC or 600 Volts AC). This standard also applies to individual cores in multi-core cables. This standard contains requirements for cables with copper conductors.

For the purposes of this standard, the following terms and definitions apply:

• 60 Volt cable is cable designed for use in on-road vehicle applications where the nominal system voltage is less than or equal to 60 Volts DC or 25 Volts AC
• 600 Volt cable is cable designed for use in on-road vehicle applications where the nominal system voltage is greater than 60 Volts DC or 25 Volts AC and less than or equal to 600 Volts DC or 600 Volts AC
• Cable family refers to a group of multiple conductor sizes with the same conductor wire coating, insulation formula and wall thickness type.
• Nominal (value) A convenient approximation used to specify or describe a component.

In this standard, tests and requirements are organized as follows:

• Outer cable diameter
• Insulation thickness
• Conductor diameter
• Conductor resistance
• Withstand voltage
• Insulation faults
• Insulation volume resistivity
• High temperature pressure test
• Strip force
• Low temperature winding
• Cold Strike
• Abrasion test
• Long-term thermal aging, 3 hours
• Short-term thermal aging, 240 hours
• Thermal overload
• Heat shrinkage
• Fluid compatibility
• Durability of cable marking
• Ozone resistance
• Hot water resistance
• Temperature and humidity cycling
• Resistance to flame spread

Conductors shall consist of annealed or tempered compressed/compacted aluminium, aluminium alloy or copper clad aluminium wires The properties of the conductors shall be in accordance with the table given in the standard and shall be completed with the material properties Elongation requirements shall be determined by agreement between the customer and supplier The finished cable shall meet the resistance requirements of this standard for all conductors Individual strands of the aluminium conductor shall be manufactured to 573 series aluminium in accordance with EN 1-1000 The chemical composition shall be in accordance with EN 573-3 Examples of the wires are shown in the table These wires highlight examples of conceptual configurations and are not intended to reflect any preferred construction Other wire configurations may be used provided they meet the specified requirements and are agreed upon by the customer and supplier

• The standard “ISO 6722-3 Part 3: Conductor sizes and dimensions for thick-walled insulated cables” describes the conductor sizes and dimensions of thick-walled insulated unshielded low-voltage cables used in road vehicle applications.

Insulated cables covered by this standard must comply with the values ​​specified in the table provided in the standard. For other requirements, different conductor structures may be used provided that they meet the nominal cross-sectional area and conductor resistance requirements. For special applications for classes A, B and C and for certain materials for class C, the insulation thickness and maximum outer cable diameter may be increased as agreed with the user. Available cable sizes that differ from those in the table are included in the standard annex (Annex A).

Test methods and performance requirements should be as specified in ISO 6722-1 and ISO 6722-2 standards.

• The standard “ISO 6722-4 Part 4: Conductor sizes and dimensions for thin-walled insulated cables” describes the conductor sizes and dimensions of thin-walled insulated, screened low-voltage cables used in road vehicle applications.

The preferred colours for road vehicle cable insulation are black, white, blue, orange, brown, green, purple, with a small amount of yellow and grey.

Insulated cables covered by this standard must comply with the values ​​specified in the table. For other requirements, different conductor structures may be used as long as they meet the nominal cross-sectional area and conductor resistance requirements. Available cable sizes that differ from those in the table are included in the standard annex (Annex A).

Test methods and performance requirements should be as specified in ISO 6722-1 and ISO 6722-2 standards.

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