WorksheetsElectric Vehicle Safety
Total questions: 20
Worksheet time: 10mins
Who is responsible for OHS in the workplace
The Customer
All Personnel
The Manager
The Employee
Which PPE is required to safely depower a BEV
Latex Gloves
Sun Glasses
Class 0 1000v Gloves
Class 00 500v Gloves
What needs to be considered when preparing a HV work area?
The ground needs to be moistened to ensure good earthing
Prepare the multimeter that you purchased from the $2 shop
Block off the work area with barriers and label it with warning signs
Set the vehicle tyre pressures
Which of the following test equipment should be used when testing HV systems
Ohm Meter
Conventional DMM
CAT III 1000v DMM
CAT II 1000v DMM
When depowering a battery electric vehicle, which of the following must be observed
Ensure the HV battery is fully charged
Refer to the owners manual
Refer to manufacturers procedures/
workshop manual
Ensure the 12v battery is fully charged
Which of the following are classed as safe working voltage levels?
30v (AC)
60v (DC)
80v (DC)
80v (AC)
60v (AC)
120v (DC)
30v (DC)
60v (AC)
Which of the following are a hazard concerning Lithium-Ion batteries
Chemical Runaway
Thermal Runaway
Customer Runaway
Voltage Runaway
Which class of charging is single phase (AC)
Class 2
Class 1
Class 7
Class 3
Typical charging times for a DC fast charge range from
Overnight
20 mins - 2hrs
20 - 40hrs
6 - 10hrs
The function of the on-board charger is to..
Convert DC to AC and step down the voltage
Charge your mobile phone
Convert DC to AC and step down the current
Convert AC to DC and step up the voltage
Typical voltage levels of a HV battery range from..
12v - 24v
200v - 900v
2000v - 9000v
30v (AC)
60v (DC)
What is the function of the Pre-Charge Relay
To isolate the HV from the vehicle
To prevent the contacts in the main relay from arcing
Supplies HV current to the vehicle
Provides power to the starter motor
What is the main function of the inverter
Plays AC/DC
Converts DC to DC
Inverts AC to DC
Inverts DC to AC
How is the low voltage (12v) battery charged in a BEV
From the HV Battery through a DC to DC converter
Alternator
Regenerative Braking
On-Board Charger
Which type of electric motor is typically used in a BEV
Single phase AC A-synchronous motor
3 phase DC synchronous motor
Single phase AC synchronous motor
3 phase AC synchronous motor
Which of the following affects the rotation of an electric motor
Strawberry Field
Rotating Magnetic Field
Combustion
Pressure
Which of the following is typically operated by the HV system
Audio System
A/C Compressor
Water Pump
Heater Fan
When servicing HV components/systems, which of the following must be observed
R12 refrigerant must be used
The use of
non-conductive oils/fluids
The drive belt for the compressor should be changed
Standard oils/fluids can be used
When observing HV battery cell voltage levels, there should be a difference of no more than..
0.2 volts
5 volts
500 mv
0.2 amps
Which of the following statements is true
BEVs cannot be driven when it is raining
If a HV battery temp fault is identified, the vehicle should be isolated outside until the fault is verified
BEVs produce more emissions than a petrol engine
If a HV battery temp fault is identified, the vehicle should be isolated inside the workshop until the fault is verified
