ISO 7637

ISO 7637 Road vehicles -- Electrical disturbances from conduction and coupling^[1] is an international electromagnetic compatibility vehicle standard published by the International Organization for Standardization (ISO), that relates to 12- and 24-volt electrical systems. As of November 2018^[update], four parts of ISO 7637 have been published,^{[1][2][3][4][5]} and one is in development (part 4):^[6]

• ISO 7637-1 (last revised October 2015 (2015-10)^[1]) Definitions and general considerations
• ISO 7637-2 (last revised March 2011 (2011-03)^[2]) Electrical transient conduction along supply lines only
• ISO 7637-3 (last revised July 2016 (2016-07)^[3]) Electrical transient transmission by capacitive and inductive coupling via lines other than supply lines
• ISO 7637-4 Electrical transient conduction along shielded high voltage supply lines only
• ISO 7637-5 (last revised November 2016 (2016-11)^[4]) Enhanced definitions and verification methods for harmonization of pulse generators according to ISO 7637

There are several distinct electrical transient waveforms that are required from this testing to ISO 7637-2. These pulses or waveforms include very high rise or fall times often in the nanosecond and microseconds range.^[7] These transients are designed to simulate electrical occurrences in operational environments, including a load dump simulation. ISO 7637 is referenced by many vehicle manufacturer standards and individual waveforms are modified to meet specific requirements.^[8] ISO 7637 includes both immunity and emissions components of electromagnetic compatibility testing.^[9] This standard, including ISO 7637-2, places specific requirements on test equipment that can be used to replicate electrical occurrences.^[10]

See also

• List of common EMC test standards
• CISPR
• Electromagnetic interference