HVSB – High-Voltage Safety Box
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Bosch Engineering HVSB – High-Voltage Safety Box HV laboratory equipment for validation tasks of power electronics OVERVIEW OF HVSB Bosch Engineering’s High-Voltage Safety Box ensures maximum safety for testing the electric vehicle power electronics of the drive in the high-voltage lab. The compact HV safety module includes all relevant safety and comfort functions required for the circuit of the component under test.  Safe switching and monitoring of high-voltage up to 1,200 Volt / 200 Ampere Due to the possibility to integrate the HV safety box flexible into existing laboratory equipment, now many of the tests on the power electronics of electric vehicles can be safety shifted from the test bench to the high-voltage laboratory. It protects the tester and the power electronics itself during the everyday test operation in the development laboratory.  Precharge and active fast discharge function  Isolation and operation monitoring  HV interlock  Safety PLC  Emergency shut-off  Touchscreen or external monitor as central operating and display unit  Remote controllability  Integration into test automation  Safety and comfort function The protection concept covers potential causes of accidents and reduces the risks when working on the high-voltage circuit. Another resulting advantage is the protection of the test object from damage during testing and the reduction of component wear. This is particularly advantageous for prototype components that are only available in small quantities. High-Voltage Safety Box (HVSB) The HV safety box is conveniently operated via a touchscreen display or external monitor, which provides a clear-cut overview of all operating parameters such as status messages, information on system settings, and any error warnings. The HVSB offers isolation monitoring, an interlock circuit, integration into a laboratory emergency stop shut-off concept and a PLC interface with which the HVSB can be integrated application-specific into the test automation of the respective environment and operated remotely. The HVSB was developed in the context of the High-Voltage Lab Rig (HVLR) and can therefore be easily integrated into it.

Bosch Engineering, HVSB – HV lab equipment for validation tasks of power electronics TECHNICAL FEATURES HVSB – High-Voltage Safety Box Supply voltage Current carrying capacity Dielectric strength Isolation monitoring Emergency shut-off Precharge function Active fast discharge function to below 60 V Perm. ambient temperature Automation and remote-control interfaces 2 x digital input for switching requirements HV relay 2 x digital output for switching status HV relay Communication interfaces 1 x DVI (monitor) 1 x USB 1 x safety relay (DSUB9) 1 x CAN 2.0B External control and emergency...