LV 124 - Electrical and electronic components in motor vehicles up to 3.5t

LV 124 - General requirements, test conditions and tests?

The manufacturers of electrical and electronic automotive assemblies not only have to deal with the increasing complexity and higher quality requirements but also with the manufacturers' specifications, which must be met. The early 2000s saw the emergence of an effort by leading automotive manufacturers in Germany to set out the requirements for manufacturers of electrical and electronic automotive assemblies in so-called delivery specifications (Liefervorschriften or LV). LV 124 therefore signifies a quality and reliability standard. LV 124 was created for "electrical and electronic components in motor vehicles up to 3.5 t" and adopted into the respective in-house standards (e.g. VW 80000, BMW GS 95024-3-1).??

Application: The LV 124 standard specifies the requirements, test conditions and tests for electrical, electronic and mechatronic components and systems for the 12-volt electrical system in motor vehicles up to 3.5t.??

LV 124 is divided into two parts:?

Part I: Electrical requirements This part consists of 24 electrical requirements and tests in the automotive sector??

Part II: Environmental requirements The environmental requirements are divided into four further categories.?

? 9 Mechanical requirements and tests? ? 19 Climatic requirements and tests ? Chemical requirements and tests ? 3 Service life tests??

This delivery regulation is obligatory for all suppliers of the German OEMs - weisstechnik has therefore made it its duty to support the suppliers in fulfilling the regulations since the announcement.??

As a result, weisstechnik can support the majority of environmental requirements with its existing product portfolio.?

The following pages list examples of weisstechnik brand device types that can assist you in performing the specific tests. If you can't find what you are looking for, please contact us! We can also provide LV 124 support for special equipment!??

LV 124 – Part 1: Electrical requirements??

E-01 Long-term overvoltage E-02 Transient overvoltage ? E-03 Transient undervoltage ? E-04 Jump start ? E-05 Load dump E-06 Superimposed alternating voltage ?? E-07 Slow decrease and increase of the supply voltage E-08 Slow decrease, quick increase of the supply voltage? E-09 Reset behavior? E-10 Short interruptions E-11 Start pulses? E-12 Voltage curve with electric system control? E-13 Pin interruption E-14 Connector interruption ? E-15 Reverse polarity E-16 Ground offset E-17 Short circuit in signal circuit and load circuits E-18 Insulation resistance E-19 Closed-circuit current? E-20 Dielectric strength? E-21 Backfeeds? E-22 Overcurrents? E-23 Equalizing currents of multiple supply voltages? E-24 ON/OFF duration test?

LV 124 – Part 2: Environmental requirements?