HV Insulation Fault Simulations for Testing Safety-Relevant Functions

HV insulation fault simulations are used to test and validate safety-relevant system functions, either during the engineering process or also after repairs carried out by after-sales service or the repair shop, or directly on the vehicle. This enables the testing and verification of correct system responses in a (safety-critical) fault case.

The occurrence of insulation faults in the HV wiring harness has to be detected immediately and reliably during vehicle operation and, once detected, the complete HV on-board electrical system must be switched off immediately. Faults such as short circuits, leakage currents or even line interruptions in the HV connection area must be permanently monitored by battery management systems – typically by cyclically measuring the insulation resistance of HV+ and HV- against KL-31 (chassis).

With our high-voltage error simulations, error states in the area of HV connections and lines can be specifically generated. This can be either manually or automatically, depending on the application.

Typical areas of application are:

• HiL and function testers (→ automated error simulations)
• Labs, test benches and engineering workshops (→ manually operated error simulations)

at OEMs, system and module suppliers (Tier1), in test companies as well as in repair shops.