ISO 11452-8 Road Vehicles - Immunity to Magnetic Fields

The ISO 11452-8 standard, developed by the International Standards Organization (ISO), specifies tests for electromagnetic immunity of electronic components to magnetic fields for passenger cars and commercial vehicles regardless of the propulsion system (e.g. spark ignition engine, diesel engine, electric motor).

These sources are classified as internal magnetic field (vehicle electro-mechanical motors, actuators) and external magnetic field (external sources of the vehicle such as power transmission lines, generating stations). To perform this test, the device under test (DUT) is exposed to a magnetic disturbance field.

The spreading loop method can be applied to small DUTs or larger DUTs by positioning the coil in multiple locations.

The Helmholtz coil is sometimes used as an alternative method. This technique is limited by the relationship between the size of the DUT and the size of the coils. The electromagnetic disturbances considered in this ISO 11452-8 are limited to continuous narrowband electromagnetic fields.

Immunity measurements of complete vehicles can often only be made by the vehicle manufacturer for reasons including the confidentiality of prototypes of an eici-coated shielded enclosure or the high cost of many different vehicle models. Consequently, for research, development and quality control, a laboratory measurement method is used by vehicle manufacturers and equipment suppliers to test electronic components.

Among the services provided by our organization within the framework of material testing services, there are also ISO 11452-8 standard tests.