ISO 7637-1 Updated

ISO 7637-1, “Road vehicles – Electrical disturbances from conduction and coupling – Part 1: Definitions and general considerations,” has been updated.  The new 3rd Edition is available from Document Center now.  The document provides information on electrical and radio-frequency disturbances that could affect the performance of the computer components in your car!

The use of electronic devices in automobiles is now ubiquous, with chips controlling many functions (including changing lanes safely in some instances) and displaying information for the driver.  So rf and electrical interference in the vehicle electrical system can be disasterous.

The ISO 7637 series addresses the problem of dealing with the various electrical distubances that are generated by various parts within a vehicle itself.  These might be from such parts as your  ignition, relay contacts, alternator, injectors, and other accessories.  The series is concerned with the problems that these electrical transient distubances can create as they are transmitted through the wiring of the car (supply and other lines) to various electronic components.

ISO 7637-1 is the overview standard, providing you with definitions and basic information on how the series is to be used.  There is a new Clause 5 in this edition on general test conditions.  This new clause provides you with the test conditions that are found in all the parts of the series (considered to be a series of bench test standards.)

Annex A, which was added to the standard with the adoption of Amendment 1 for the 2008 2nd Edition, is still part of the document.  As you probably know, it is normative, which means that it’s use is mandatory.  And there have also been additions to the bibliography in this new update.

The committee in charge of the ISO 7637 series is also working on two new parts that will be included in the series soon.  They are:

  • Part 4: Electrical transient conduction along shielded high voltage supply lines only
  • Part 5: Enhanced definitions and verification methods for harmonization of pulse generators according to ISO 7637–2 (to be released as a technical report)

Now in order to comply with copyright law, you’ll want to use an authorized distributor like Document Center Inc. for all your standards purchases.  Our webstore has standards from organizations based all over the world.  You’ll find it at www.document-center.com.  Here’s the direct link to the order page for ISO 7637-1.  You’ll find it available for purchase in both paper format and for pdf download.

Of course, many of our customers are interested in multi-user access to support the entire organization.  Our Standards Online subscription service is ideal for this purpose.  Contact our staff by phone (650-591-7600) or email (info@document-center.com) to find out more.

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