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DGUV Information 209-093 · Highest Qualification Level · Development

HV Training Level 3E
Live HV Work – Development

€1,099
per person
excl. VAT

The HV Training Level 3E is the highest qualification level per DGUV Information 209-093 for the development and production sector. It authorises fault diagnosis, measurements and diagnostics under active HV voltage on prototypes, test vehicles, test benches and pre-series vehicles – where standardised safety concepts are not yet fully in place. Prerequisite: valid Level 2E qualification.

Get a Quote All Course Levels
24
teaching periods (45 min each) total
≥ 16
Units practical under voltage
Level 2E
Prerequisite
€1,099
per person excl. VAT
Target Group

Who is Level 3E for?

Level 3E is exclusively for experienced professionals with a valid Level 2E qualification who regularly carry out complex live diagnostics on development vehicles.

Senior Development Engineers
HV experts at OEMs analysing and debugging prototypes under operating voltage
Test Bench Specialists
Technicians at rolling test benches, calorimeters and HV test rigs under active voltage
Motorsport & Racing Development
Racing mechanics and engineers in formula motorsport and electric race vehicles
Battery Test Specialists
Engineers in battery testing (cyclic voltammetry, capacity tests) under HV operating conditions
Production SoP Ramp-Up
Quality engineers at SoP ramp-up finalising HV systems under operating voltage
HV Trainers & Safety Officers
Company HV safety officers responsible for development environments
Curriculum

What does Level 3E cover?

Level 3E builds on Level 2E and extends competencies to include safe working under active HV voltage – with increased demands on protection concepts and measurement technique, since standardised series safety systems cannot be assumed.

⚡ Theory – approx. 8 TP

  • Advanced HV system engineering for development: 800 V and 1,000 V platforms
  • Hazards when working under voltage on non-standardised systems
  • Extended PPE for development environments (arc class, IMD usage)
  • Measurement and test equipment for live measurements on prototypes (CAT III/IV)
  • Insulation resistance measurement without standardised IMD (manual measurement)
  • Fault diagnosis on prototype HV components under active voltage
  • Handling preliminary system documentation during live measurements
  • Emergency management in test environments and on test benches
  • Risk assessment for live HV work per TRBS 2131 in development
  • Release processes and documentation obligations in development

🛠 Practical – min. 16 TP

  • PPE donning and full inspection before live exercises
  • Insulation resistance measurement on active HV prototype system
  • Multi-point voltage measurement under operating voltage (400–1,000 V)
  • Live fault diagnosis: simulate and locate insulation faults without standardised IMD
  • Test bench simulation: live diagnostics on an HV test assembly
  • Emergency drill: response procedure for HV accident in test environment
  • Final assessment: learning objective check + practical demonstration
On-site only: The live practical exercises under active voltage cannot be conducted remotely. The entire course takes place as an on-site inhouse training.
Level 2E is a mandatory prerequisite

Level 3E is an advanced course. Fully completed Level 2E is a mandatory prerequisite under DGUV 209-093 (Section 5.1.5). Enrolment without a valid Level 2E certificate is not possible.

Prerequisites

Who can attend Level 3E?

Level 3E is an advanced qualification on top of Level 2E – entry without a valid Level 2E qualification is not possible.

Entry requirements

  • Valid Level 2E qualification (participant certificate required)
  • Demonstrable professional experience with HV development vehicles or test benches
  • Technical degree or electrotechnical qualification recommended
  • Company authorisation for live work on HV systems
  • Physical fitness for wearing extended PPE (arc flash protection)
Development only (before SoP): Level 3E applies exclusively to development vehicles and test benches before Start of Production. For series vehicles, Level 3S is required.

After training you may:

  • Independently measure and diagnose under HV voltage (development vehicles)
  • Perform fault diagnosis on prototype HV systems under active voltage
  • Work on test benches under HV operating voltage
  • Locate insulation faults in prototype systems without standardised IMD
  • Supervise FuPs (Level 1E) and FHVs (Level 2E) in development environments
  • Prepare risk assessments for live work in development
Proof of Qualification

Participant Certificate for Level 3E

After passing the learning objective check and practical demonstration, all participants receive a personalised certificate per DGUV Information 209-093.

The certificate documents:

👤
Name and qualification level (Fachkundige Person Hochvolt (FHV) 3E – Development & Production)
📋
Training content per DGUV Information 209-093, Level 3E
⏱
Training scope (24 TP, including ≥16 TP practical under voltage)
🗓
Training date and validity period (3 years recommended)
✍️
Signature of qualified trainer
🏢
Training provider: Hochvolt-Experten

The participant certificate is a proof of qualification per DGUV Information 209-093. The formal appointment as Fachkundige Person Hochvolt (FHV) Level 3E within the company is the employer's responsibility. For operational risk assessments in development, an additional internal release is often required.

When does the qualification need refreshing?

DGUV clarifies in its official FAQ: a new course is not automatically required – but the qualification must be kept current. According to DGUV FAQ (Ch. 4.26), a refresh is required when:

  • New vehicle types or HV technologies are introduced (e.g. solid-state batteries)
  • Relevant standards or regulations are updated
  • New HV components or tools are introduced at your facility
  • More than 12 months have passed without active HV work

Regardless, the annual instruction under DGUV Regulation 1 remains mandatory. Annual instruction →

Frequently Asked Questions

FAQ – HV Training Level 3E

What is the difference between Level 3S and Level 3E?
Level 3S authorises fault diagnosis under HV voltage on series vehicles after SoP – with fully documented, standardised HV systems (IMD, IPBS, defined shutdown paths). Level 3E applies to development vehicles, prototypes and test benches before SoP, where standardisation cannot be assumed and greater individual responsibility is required.
How much does the Level 3E training cost?
€1,099 per person plus VAT. Combined training packages (Level 2E + 3E in one block) or company quotes for larger teams are available on request. Individual pricing is possible for OEM development departments and Tier-1 suppliers.
What PPE is required for Level 3E activities?
Insulating gloves Class 1 per EN 60903 (up to 7,500 V), arc flash protective clothing per EN ISO 11612 (min. 12 cal/cm²), helmet with arc flash visor (arc protection class APC 2), VDE tools per EN 60900, and CAT III/IV measuring instruments. The employer is required to supply this PPE free of charge. We provide all PPE for the training exercises.
Do I need both Level 3S and Level 3E?
Only if you work under HV voltage on both series vehicles (workshop) and development vehicles (prototypes, test benches). If you work purely in development, Level 3E alone is sufficient. Many engineers transitioning from development to series production or working in quality assurance hold both qualifications.
How often must the Level 3E qualification be renewed?
Every 3 years and after more than 12 months without active HV work. As HV technology in the development sector evolves rapidly (solid-state batteries, 1,000 V systems, new cell chemistries), we recommend an annual refresher instruction for development engineers.

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Level 3E Training for Your Development Team

On-site at your development centre or test lab, nationwide. Individual quote within 24 hours.

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Keep your qualification valid

Don't forget the Annual Update Training

After completing your qualification, HV clearance must be refreshed annually per DGUV 209-093 – only then does your authorisation remain permanently valid.

Annual Update Training →