High-Voltage Electrical Disconnect Features
WARNING
Electric vehicles damaged by a crash may have compromised high voltage safety systems and present a
potential high voltage electrical shock hazard.
Exercise caution and wear appropriate personal protective equipment safety gear, including high voltage
safety gloves and boots. Remove all metallic jewelry. Isolate high voltage systems as directed in this
manual. Failure to follow these instructions may result in serious personal injury or death.
The following list describes certain features that have been incorporated into Tomcar electric vehicles that
allows for either simple or automatic shut-off of the high-voltage electrical systems.
•High-Voltage Manual / Service Disconnect Switch –Any time the manual high-voltage disconnect
switch is in the ‘OFF’ position, the high-voltage system is isolated.
•High-Voltage Interlock Circuit –whenever a high voltage connector is disconnected, the high-
voltage interlock circuit opens and isolates the high voltage system. The circuit will also open when
a cable is cut, a high-voltage insulation fault is detected, a motor insulation fault is present or if the
safety mechanism safety checks discover a fault such as a welded contactor.
•Ignition in the ‘OFF’ Position –whenever the ignition switch is in the ‘OFF’ position and the vehicle
is not being charged, the high-voltage system is isolated.
•Thermal Sensors –Thermal sensors monitor the battery pack, motor controller and motor. If the
vehicle cooling or heating system is compromised, power limitations will be implemented up to
complete system shutdown.
