LV 124 Electric and Electronic Components in Motor Vehicles up to 3.5t

Testing HV Automotive Components LV 123 is an electrical test standard which verifies the safety and electrical parameters of high-voltage components in cars. German original equipment manufacturers (OEMs) must comply with LV 123, notably BMW, AUDI, Daimler, Porsche and Volkswagen. Manufacturers adhering to LV 123 gain the advantage of a systematic approach to automotive testing and clear test parameter definitions, as well as the possibility of interchangeable qualification results. Another benefit of LV 123 is the ability to compare product qualifications between different OEMs, i.e. BMW and Porsche.   Recommended Bundle EM Test 3-Phase Netwave Series AC/DC Power Supply   +   EM Test UCS 200N100 Automotive Transient Generator     +   AE Techron 7228 Linear Power Amplifier   =   LV 123 Automotive Component Testing System Learn More     Determining HV Status HV operating status, a measure by which an HV component is judged to be operational, is a key element of LV 123 testing. An HV part is given one of the following status readings.   HV Status    Operational Details B0 HV components operate perfectly, and without power demand. B1 Fully operational HV components which perform as intended. B2 Fully operational components, but with deviations permissible for B2 status. When HV parts revert to B1 status, will perform as intended B3 Still operational, no undefined states, will not interfere with other HV components. Components may lower output for purposes of self-protection. When components revert to B1 or B2, automatically perform as intended. B4 Still operational, no undefined states. HV

LV 148 Standards are written for electric and electronic components for vehicles with a 48V Electrical System. This standard details a series of procedures for a test involving electrical normative bases and addressing the practical challenges for vehicle components and systems. LV 148 covers electric and electronic components for vehicles within a 48V electrical system's test conditions. Topics and tests covered include tolerances, operating voltage ranges, and other standard values and specifications. With an increasing amount of completely electric vehicles manufactured every year, the LV 148 will remain relevant in the coming decades to ensure standards. There are two main test setups LV 148 applies for voltage simulations and voltage dropouts. Test setup for voltage simulation DC source Signal generator Auxiliary equipment Measuring devices Test setup for voltage dropouts DC source Electronic switch Signal generator Auxiliary equipment Measuring devices In addition, the LV 148 standards apply to ground offset, short circuit signal and power line, standby current, the ground lost, internal dielectric strength, operations with/without functional limitation, over-voltage range, and under-voltage range tests.   Tolerances & Standard Values Frequencies ±1% Temperatures ±2 °C Humidity ±5% Times/durations +5%; 0% Voltages ±0.5% Currents ±2% Room Temperature TRT = 23 °C ± 5 °C Humidity 25 % (+ 5 % bis 0 %) to 75 % (- 5 % bis 0 %) Test Temperature Ttest = TRT Operating Voltage U48max Source Impedance 10 mOhm ≤ Ri ≤ 100 mOhm   Terms A, B, C, D in Diagrams Functional status A, B, C,