LV covers tests for electric and electronic components for use in motor vehicles up to 3,5 t with a 12 V electric mOhm. Tolerances & standard values. LV Automotive test standard bij Hielkema Testequipment. The LV includes several mechanical, climatic and life tests, such as the K damp heat. ISO , Road vehicles—Environmental conditions and electrical testing for electrical and electronic equipment, is an ISO standard which provides guidance .
|Published (Last):||26 December 2008|
|PDF File Size:||13.5 Mb|
|ePub File Size:||4.63 Mb|
|Price:||Free* [*Free Regsitration Required]|
Verification takes place by means of a parameter test large acc. Test parameters L Life test – high-temperature endurance test The test is carried out acc. Located on the back of the instruments there are monitor outputs for voltage and current with its measured values.
No additional function generator is necessary. The corresponding derating strategy must be described in the Component Performance Specifications.
LV Test Systems Curves are our passion! Driving without stamdard Driving with frequent actuation. The time sequences of the functional statuses must be specified in the Component Performance Specifications. ISO standards Automotive engineering.
The artificial vehicle network must be coordinated with the engineering department. Vibration, BroadBand Random and Guidance.
LV-124/ LV-148 tests with the eTS one
A parameter test functional test is carried out at each water bath temperature increase by 10 K starting 30 min after beginning of the condensation phase acc. Also for security aspects an interlock shut down can be triggered. This must be verified by means of continuous parameter monitoring. Then lv1224 condensation phase begins. The test serves to verify the resistance of the part to faults, such as corrosion and component damages. Functional status C Test case 3: The test is passed if the DUT achieves functional status A in the range up to ?
The test serves to verify standaed resistance of the component with respect to faults caused by humid heat, e. Test parameters stanxard vibration, sinusoidal for engine-mounted parts Vibration excitation Test duration for each spatial axis Vibration profile Sinusoidal 22 h Characteristic 1 applies to components mounted on engines with maximum 5 cylinders.
Voltage- and current control
Information by e-mail Consultation by phone On-site presentation. Test sequence plan – sequential Note: For a component in which the operating voltage is switched by means of a relay, the following applies deviating from the value mentioned above: Then cyclical exposure of the DUT with splash water acc.
A discontinuity of the curve due to positive pulses is not permitted. In addition, the electr.
According to LV, E and E pulses, interruptions need to be implemented. Cascading One waveform can be simulated synchronously with several amplifiers Each DUT has its own sense.
The intermediate measurements must be carried out as parameter test large. Deviations from the LV are listed on the cover sheet of lv1224 standard.
Synchronous waveform simulation, measurement and testing tasks are predestined applications. At least 6 Figure 7: Different pulse forms are used since the possible interruptions may differ greatly regarding their duration from loose contacts to permanent interruption. Data files stnadard sent to the instrument within milliseconds.
The starting process may standsrd performed under different vehicle starting conditions, cold start and warm start. The cover must be aligned so that the bevel points to the test room door.
Most components are activated directly before starting for a short period, then deactivated during starting and activated again after starting when the engine is running. Makro function With a standrad macro editor and its execution, selected waveforms run sequentially.
Temperature profile for incremental temperature test 9. Voltage- and current control Both voltage and current control of the mighty amplifiers is possible. If fuse elements are available in the load circuit, these may be triggered.
Intermitting 1 h operating mode II.
ISO – Wikipedia
The SIB series are linear precision 4-quadrant power amplifiers for standrd voltage and current signals – each positive and negative bipolar.
The test serves to verify the quality and reliability of the component with respect to faults caused by humid heat, e. UBmin and UBmax The power supply unit used for the test must be able to supply the short-circuit currents to be expected by the component.
U1 UBmin to 6 V?