ISO 7637-4

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Overview

ISO 7637-4 is an international standard developed by the International Organization for Standardization (ISO) that focuses on the testing of electrical disturbances in electric vehicles. It provides test methods and requirements to evaluate the resilience of electrical and electronic components against transient disturbances originating from conduction and coupling.

The EMC Shop stocks equipment to accomplish ISO 7637-4 testing on high voltage power lines on EV and automotive electronics.

Testing Procedure

ISO 7637-4 outlines various test methods and severity levels to simulate transient disturbances commonly encountered in electric vehicles. The standard covers disturbances such as fast transients, slow transients, and ripple voltages. Here are some key testing procedures involved in ISO 7637-4 electric vehicle EMC testing:

  1. Test Setup: The component or system under evaluation is connected to a specialized test setup, which replicates the electrical environment of an electric vehicle.
  2. Test Parameters: The standard specifies the test parameters, including voltage levels, rise and fall times, durations, and frequency characteristics for each type of transient disturbance.
  3. Test Execution: The specified disturbances are applied to the component or system under controlled conditions. The behavior and performance of the tested equipment are monitored and analyzed during the tests.
  4. Compliance Assessment: The test results are compared against the requirements specified in ISO 7637-4 to determine compliance. Any deviations or failures are documented and addressed accordingly.

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