As the electrification of the powertrain in the automotive sector is proceeding, electrical measurements are becoming increasingly important. Special requirements arise for measurements on the safety and function of the high-voltage system and its components, in particular the high-voltage battery.
Electrical measurements in environmental simulation testing
We offer a wide range of electrical measurements, e.g. for monitoring the function and characteristics of test specimens as part of environmental simulation testing. We also specifically investigate the influence of various environmental conditions on electrical and electronic components and systems. Our spectrum of electrical measurements ranges from contact interruptions (micro cuts) on plug connections in the nanosecond and milliohm range to measurement voltages in the kilovolt range.
4-wire resistance measurement on high-voltage (HV) components
By using measuring currents of up to 10 A, it is possible to measure the smallest resistances in the milliohm range on HV components with high accuracy. This allows, for example, changes in contact resistances in HV plug connections and HV cables to be detected and documented in environmental simulation testing.
HV measurement of insulation resistance and dielectric strength
In order to detect short circuits and safety-critical currents in housing components in electrical devices, their insulation resistance and dielectric strength are determined under high test voltages (up to 2,500 V). With our measuring equipment, the measuring voltages can be specified in the form of a ramp with defined rise, hold and fall times.
Measurement and classification of short-term contact interruptions in electrical contact systems
Reversible, short-term contact interruptions can occur on electrical contact systems under thermal and/or dynamic load, which can lead to malfunctions. On request, we can therefore monitor the contact points of contact systems during climate and vibration testing. With our MiCads measuring system, we detect contact interruptions with a minimum duration of up to 100 nsec. The number and length of contact interruptions recorded are documented and displayed in classified form.
Pictures right: Recording of detected interruptions during a temperature cycling test.
