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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, 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

References

  1. ^ a b c "ISO 7637-1:2015". ISO. Retrieved 8 November 2018.
  2. ^ a b "ISO 7637-2:2011". ISO. Retrieved 8 November 2018.
  3. ^ a b "ISO 7637-3:2016". ISO. Retrieved 8 November 2018.
  4. ^ a b "ISO/TR 7637-5:2016". ISO. Retrieved 8 November 2018.
  5. ^ "1.2 ISO7637 and related standards overview". Texas Instruments. 1 June 2016. Retrieved 1 June 2016.
  6. ^ "ISO/DTS 7637-4". ISO. Retrieved 8 November 2018.
  7. ^ Brorein, Edward (31 January 2018). "Mathematically Defining Test Pulse 2b of the ISO-7637-2 Section 5.6.2 Automotive Test Standard". InCompliance Magazine. Retrieved 31 January 2018.
  8. ^ "ISO 7637-2:2011 Road vehicles -- Electrical disturbances from conduction and coupling -- Part 2: Electrical transient conduction along supply lines only". Transient Specialists. Retrieved 24 September 2018.
  9. ^ Transient Emission Analysis..using Simulation (PDF) (Report). EMC Europe 2013. p. 2. Retrieved 6 September 2013.
  10. ^ Eddleman, Dan (22 October 2017). "Robust Automotive Supply Protection for ISO 7637-2 and ISO 16750-2 Compliance". EE News Europe. Retrieved 22 October 2017.


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