Electrical Disturbance standards cover test methods for road vehicles subjected to exposure from a range of possible sources of electrical disturbances. While this is important in any vehicle, the increasing amounts of electrical components present in modern non-electric vehicles and the roll-out of electric vehicles makes the consideration of electromagnetic immunity all the more important. ISO standards from three series, ISO 11452, ISO 11451, and ISO 7637, contribute heavily to this field of standardization. ISO 11451 is specifically related to narrowband radiated electromagnetic energy.
This document specifies general conditions, defines terms, gives practical guidelines and establishes the basic principles of the vehicle tests used in the ISO 11451 series, for determining the immunity of passenger cars and commercial vehicles to electrical disturbances from narrowband radiated electromagnetic energy, regardless of the vehicle propulsion system (e.g. spark-ignition engine, diesel engine, electric motor). The electromagnetic disturbances considered are limited to continuous narrowband electromagnetic fields. A wide frequency range (0,01 MHz to 18 000 MHz) is allowed for the immunity testing in the ISO 11451 series.
This document specifies a method for testing the immunity of passenger cars and commercial vehicles to electrical disturbances from off-vehicle radiation sources, regardless of the vehicle propulsion system (e.g. spark ignition engine, diesel engine, electric motor). The electromagnetic disturbances considered are limited to continuous narrowband electromagnetic fields. While this document refers specifically to passenger cars and commercial vehicles, generalized as “vehicle(s)”, it can readily be applied to other types of vehicles. ISO 11451-1 specifies general test conditions, definitions, practical use, and basic principles of the test procedure. Function performance status classification guidelines for immunity to electromagnetic radiation from an off-vehicle radiation source are given in Annex A.
This document specifies methods for testing the immunity of passenger cars and commercial vehicles to electromagnetic disturbances from on-board transmitters connected to an external antenna and portable transmitters with integral antennas, regardless of the vehicle propulsion system (e.g. spark ignition engine, diesel engine, electric motor).
This document specifies harness excitation methods for testing the electromagnetic immunity of electronic components for passenger cars and commercial vehicles regardless of the propulsion system (e.g. spark-ignition engine, diesel engine, electric motor). The bulk current injection (BCI) test method is based on current injection into the wiring harness using a current probe as a transformer where the harness forms the secondary winding. The tubular wave coupler (TWC) test method is based on a wave coupling into the wiring harness using the directional coupler principle. The TWC test method was developed for immunity testing of automotive components with respect to radiated disturbances in the GHz ranges (GSM bands, UMTS, ISM 2,4 GHz). It is best suited to small (with respect to wavelength) and shielded device under test (DUT), since in these cases the dominating coupling mechanism is via the harness. The electromagnetic disturbance considered in this document is limited to continuous narrowband electromagnetic fields. ISO 11451-1 gives definitions, practical use and basic principles of the test methods.