Assessment Requirements for AURETH005 Diagnose and repair high voltage traction motors in battery electric vehicles

Release: 1

Assessment Requirements for AURETH005 Diagnose and repair high voltage traction motors in battery electric vehicles

Modification History

Release	Comment
Release 1	New unit of competency.

Performance Evidence

Before competency can be determined, individuals must demonstrate they can perform the following according to the standard defined in the unit’s elements and performance criteria, range of conditions and foundation skills:

diagnose and repair high voltage (HV) traction motors and associated components on two different battery electric vehicles (BEVs) to correct performance deficiencies.

Knowledge Evidence

Individuals must be able to demonstrate knowledge of:

work health and safety (WHS) and occupational health and safety (OHS) requirements relating to diagnosing and repairing HV traction motors in BEVs, including procedures for:

identifying hazards and controlling risks associated with:

working with high voltages in BEV electrical systems

wearing jewellery while working around high electrical currents

determining appropriate procedures for minimising risk associated with hazards, including applying electrical safety precautions:

using personal protective equipment (PPE), including electrical safety gloves with 1000 volt rating and high voltage (HV) insulating mat with Australian standards rating

identifying and using fire safety equipment as appropriate

using the ‘one hand rule’

following live system warning tags and signs

depowering the vehicle

isolating the HV rechargeable energy storage system (RESS) electrical supply

stabilising the vehicle electrical system

environmental requirements, including procedures for trapping, storing and disposing of waste released from high voltage traction motors

key requirements of AS 5732 Electric vehicle operations: Maintenance and repair

operating principles of HV BEVs and associated components, including:

motor generators

types of batteries

battery charging

application, purpose and operation of HV traction motors and components, including:

direct current (DC) motor generators

alternating current (AC) motor generators

diagnostic testing procedures for battery electric vehicle systems, including:

accessing and interpreting scan tool system data, including:

diagnostic trouble codes (DTCs)

live data

freeze frame data

waveforms

using diagnostic flow charts

testing electrical systems, including procedures for:

accessing electrical terminals and using test probes without damaging connectors, fuse holders or wiring

determining damage to traction motor windings

checking insulation resistance of traction motor windings

checking routing and damage to HV cabling

conducting vehicle dynamic and static tests

analysing abnormal noise

analysing component failure

repair procedures for traction motor speed control systems, including:

tightening connections

replacing faulty or damaged cable connections

removing and replacing faulty or damaged components

removing and replacing the traction motor

post-repair testing procedures for BEVs, including:

DTC clearing procedures

checking for electrical connector mating

static and dynamic performance tests of traction motors.

Assessment Conditions

Assessors must satisfy NVR/AQTF assessor requirements.

Competency is to be assessed in the workplace or a simulated environment that accurately reflects performance in a real workplace setting.

Assessment must include direct observation of tasks.

Where assessment of competency includes third-party evidence, individuals must provide evidence that links them to the BEV HV traction motors that they have worked on, e.g. repair orders.

Assessors must verify performance evidence through questioning on skills and knowledge to ensure correct interpretation and application.

The following resources must be made available:

automotive repair workplace or simulated workplace

PPE and safety equipment, including electrical safety gloves with 1000 volt rating and high voltage (HV) insulating mat with Australian standards rating

manufacturer specifications for BEV HV traction motor systems

AS 5732 Electric vehicle operations: Maintenance and repair

two different BEVs with HV traction motor systems accessible for diagnosis and repair or replacement activities

electrical diagnostic equipment appropriate to the BEV being diagnosed and repaired, including:

digital multimeter with Cat III 1000 volt rating

insulation tester

scan tool

oscilloscope

residual voltage tester, if specified in original equipment manufacturer (OEM) test requirements

tools, equipment and materials appropriate for repairing HV traction motors in BEVs.

Links

Companion Volume implementation guides are found in VETNet - https://vetnet.gov.au/Pages/TrainingDocs.aspx?q=b4278d82-d487-4070-a8c4-78045ec695b1

Companion Volume implementation guides are found in VETNet - https://vetnet.gov.au/Pages/TrainingDocs.aspx?q=b4278d82-d487-4070-a8c4-78045ec695b1