and start-up
6.7 Safety concept for vehicle installation
This safety concept is a recommendation of BRUSA Elektronik AG and is a general requirement for
the safe operation of electric vehicles!
6.7.1 General interlock function
The interlock switches (1) are closed if the respective interlock conditions of the individual devices are met (closed
service cap, HV connections plugged-in...). The interlock evaluation system of the PDU switches the 12 V supply
voltage (2) of the HV contactors (4) in the battery if the interlock circuit is closed. The emergency off switch (3) also
disconnects the 12 V supply voltage of the HV contactors (4). The second interlock switch (5) of the insulation
monitoring unit disconnects the interlock circuit if an error is detected at the HV insulation.
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