← Back to TEC AcademyLevelBasic Duration3 days FormatIn person AreaEV technology
BasicIn person
EV technology · EV 2Safe isolation and reactivation of HV systems
Foundation level — 3 days / 24 hours. Contactors, pre-charge, service disconnects, HVIL, Lockout/Tagout, absence-of-voltage confirmation, RT100/IRT01, practical exam and reactivation.
Training objective
Bring the HV system to a de-energized state, confirm absence of voltage and safely reactivate the vehicle in accordance with manufacturer procedures and local regulations.
Who it is for
- Technicians attending or having completed EV 1
- Service technicians performing HV de-energising
- EV/HV system diagnosticians
- SmartSafe partner trainers
Prerequisites
Completed EV 1 or equivalent prior knowledge.
Course facts
Theory30%
Practice70%
Learning objectives and outcomes
- Understand HV-system design and protective elements
- Perform Lockout/Tagout and absence-of-voltage confirmation
- Measure voltage and insulation with RT100/IRT01
- Safely reactivate the vehicle and perform final control
- Pass the practical exam on isolation and reactivation
Program by day
Day 1 — HV-system design and protection
Contactors, pre-charge, service disconnects, HVIL and pyro fuses.
Theory90 min
Instructor demonstration105 min
Hands-on work150 min
Case analysis and review60 min
Theory — HV design and protection
- HV contactors and pre-charge system
- Service disconnects and service plugs
- HV Interlock Loop and pyrotechnic fuses
- Capacitor discharge, contact protection and equipotential bonding
- Reading service documents and locating measurement points
Practical work
- Identify HV components with P03
- Read contactor and interlock status
- Review service procedures and vehicle data
Day 2 — Isolation and absence-of-voltage confirmation
Lockout/Tagout, service-plug removal and absence-of-voltage check.
Theory90 min
Instructor demonstration105 min
Hands-on work150 min
Case analysis and review60 min
Theory — Isolation and voltage check
- Risk assessment, ignition off and key control
- Lockout/Tagout and 12 V disconnection
- Removal of service plug and discharge waiting time
- Test-meter / measure / retest-meter procedure
- Absence-of-voltage and insulation checks
Practical work
- Measure voltage and insulation
- Use RT100 / IRT01
- Monitor HV status with P03
- Record results before repair
Day 3 — Reactivation and final control
Inspect completed work, reactivate and functional test.
Theory90 min
Instructor demonstration105 min
Hands-on work150 min
Case analysis and review60 min
Theory — Reactivation and control
- Inspect completed work and protective covers
- Reconnect HV and activate the 12 V system
- Check interlock, clear faults and verify insulation
- Functional test, final scan and safety report
Practical work
- Practical exam: complete isolation, confirmation of absence of voltage and vehicle reactivation
Practical exercises
- Identify HV components and read contactor/interlock status with P03
- Measure voltage and insulation with RT100/IRT01
- Lockout/Tagout and service-plug removal
- Monitor HV status and record results
- Practical exam: isolation, absence-of-voltage confirmation and reactivation
Training equipment
- P03 — read contactor, interlock and HV-system status
- RT100 / IRT01 — insulation-resistance measurement and safe-HV-state confirmation
- Multimeter and insulated accessories — absence-of-voltage check and equipotential bonding
Assessment and certification
Theory
- Theory test — 20% of the total score
- Covers EV architecture, HV safety, measurements, diagnostics and the course equipment
Practical exercises
- Practical exercises — 50% of the total score
- Final practical task — 30% of the total score
Completion criteria
- At least 75% of the total score
- All safety-critical procedures must be performed correctly
- A critical safety error automatically terminates the practical exam
- Maximum eight participants; hands-on work in pairs
- At least one equipment set for every two participants
- At least two vehicles, or one EV and one PHEV of different architecture
SmartSafe certificate
TitleSmartSafe EV Foundation Technician
Topics
- Issued after successful completion of EV 1 and EV 2
- Covers basic safety, vehicle intake and work on an isolated HV system
- Legal authorization depends on national regulations
Final training outcome
TextThe participant can prepare an EV for work on a de-energized system and safely return it to operation within the authorization limits defined by local regulations.
Key points
- Certificate: SmartSafe EV Foundation Technician (EV 1 + EV 2)
- Next step: EV 3 — Diagnostics of EV propulsion and energy systems
Key messageSafe isolation and reliable reactivation — within legal limits.
Register your team
Ready to prepare your team for this training?
Send an enquiry and we will arrange training tailored to your team, equipment and schedule — live at the SmartSafe Europe TEC Centre in Croatia.
