Test standards for automotive electronic load rejection shock tests

The EMC issue of automotive electronic products is a problem that cannot be ignored. Currently, there is a complete standard system for automotive EMC in the world.

The ASIM Electronic Electromagnetic Compatibility Laboratory provides drop impact tests in accordance with the ISO 7637-2:2004 / GB/T 21437.2-2008 testing standards.

Equipment parameters

Pulse wave A shape: 5a/5b

Power supply system: 12V/24V, externally adjustable DC

Generator internal resistance (Ri): 12V (0.5Ω, 1Ω, 2Ω, 4Ω, 6Ω)

24V (1Ω, 2Ω, 4Ω, 6Ω, 8Ω)

Pulse leading edge (Tr): 5~10ms

Pulse duration (Td)

Pulse interval (T1): 1~5 minutes

Allowed repetition times (N): 1~99 times

Testing standards

ISO7637-2: 2004 / GB/T21437.2-2008

Test Description

This test system can conduct EMC anti-interference tests for voltage transients (12V / 24V) of power supply lines along the automotive power supply system due to the decrease in vehicle load. It is used to evaluate the anti-interference performance of automotive electrical equipment under the influence of load shedding. Tests for dedicated equipment related to automotive electronics, such as automotive dashcam, rearview monitor, vehicle charging, vehicle GPS navigation, vehicle DVD player, etc.