Technical data
and startup
3.5 Safety measures for vehicle installation
This safety measure is a recommendation by the company BRUSA Elektronik AG and is understood
as a basic requirement for the safe operation of electric vehicles!
3.5.1 Principle of operation Interlock
The interlock switch (1) is closed if the corresponding interlock condition of each device is met (closed service
cover, plugged HV connections ...). The interlock evaluation of the PDU switches the 12V supply voltage (2) of the
HV contactors (4) in the battery if the interlock circuit is closed. The emergency stop switch (3) also interrupts the
12V supply voltage of the HV contactors (4). The second interlock (5) of the line insulation guard interrupts the
interlock circuit, if a fault in the HV- insulation is detected.