HV-2 / 2S Foundation Course

Fundamentals and terminology

Definitions and scope
Voltage classes, high voltage and low voltage

System knowledge

Types of electric powertrain
HV system components, structure and operation
HV system safety devices
Connections between the LV electrical system and the HV system
Responsibilities and organisation of workplace safety
Isolation procedures for different systems
Measurements following maintenance and repair
High-voltage system components
Charging technology

Electrical hazards

Effects on the human body
First-aid measures

Legal framework

Occupational safety regulations
EN 50110-1, DGUV 209-093, OVE R19, CEI 11-27, NEN 9140, CSA Z462, NFPA 70E, NF C18-550

Practical exercises

Performing the complete isolation procedure
Disconnecting, securing against reconnection and verifying absence of voltage
Documenting the procedure and preparing an isolation record
Measuring insulation resistance and equipotential bonding resistance

Target audience

Employees who establish a de-energised state in high-voltage systems.

Scope of activities

HV-1 / 1S activities, plus:
Electrical work on the HV system in a de-energised state
Correctly cordoning off and marking the work area
Disconnecting the power supply
Securing against reconnection
Verifying absence of voltage
Measuring and documenting insulation resistance and equipotential bonding resistance
Documentation and preparation of test reports

Entry requirements

Basic knowledge of electrical engineering is assessed during the training.