Safe Handling of High-Voltage Systems

In this training system the focus is on safety when working with high-voltage electric vehicles and the dangers of electric current passing through the human body. What sort of current can flow through a body in the event of a fault? What is the meaning of "single fault tolerance"? How does one protect oneself? All these questions and countless others are answered by this course.

List of Articles

UniTrain: Safe Handling of HV Systems

The "Safe handling of high-voltage systems" training system focuses on occupational safety in the presence of high-voltage electric vehicles and safe handling of a charging station.

Includes

• Experiment card with experiment circuit in Euro format
• Labsoft browser, course software and additional virtual instruments
• Storage case
• Measuring accessories

Components on experiment card:

• Electronic circuit for demonstrating the intrinsic resistance of a human being
• Gloves for electrical safety
• Insulating mat
• Absolute earth potential
• Measuring sockets for measuring resistance between hands
• Measuring sockets for measuring resistance between hands and one foot
• Measuring sockets for measuring resistance between hands and both feet
• Measuring sockets for measuring resistance between hands and chest
• Measuring sockets for measuring resistance between chest and one foot
• Measuring sockets for measuring resistance between chest and both feet

Training contents

• Safety fundamentals for handling high-voltage electric vehicles
• Creating repair shop job orders
• Diagnostic functions
• Investigation by means of measurements
• Effects of practical faults (faults can be switched on or off)
• Course duration 7 hours approx.

Operating voltage:

• 30 V DC
• 12 V AC

Dimensions/weight:

• 100 x 170 mm (width x height)
• 0.8 kg

Additionally Required

UniTrain: Battery Disconnect Unit in Hybrid and all Electric Vehicles

High-voltage battery disconnect unit (BDU)

The battery disconnect unit training system allows the design and operating principle for disconnecting a high-voltage battery from the on-board network to be investigated.

Includes

• Experiment card with circuitry for experiments in Eurocard format
• Labsoft browser, course software and additional virtual instruments
• Storage case
• Jumpers

Components on experiment card:

• Electronic circuit for battery disconnect unit (BDU)
• Measuring sockets
• Fault simulation circuitry
• Two battery blocks
• Three relays
• Microcontroller-based control
• Service and maintenance plug
• Ignition switch
• Lamp to indicate when ignition is on
• High-voltage fault switch
• High-voltage fault indicator
• Pilot disconnecting bridge
• DC-link circuit capacitor
• Load for on-board network
• Display of on-board network load
• Measurement sockets for battery blocks
• Measurement sockets for on-board network

Training contents

• Fundamentals of battery disconnect units
• Compiling repair shop orders
• Diagnostic functions
  • Reading out fault memory with a diagnostic tester
  • Classifying faults in vehicle systems
• Function and design of a pilot line
  • Design of electric circuit
  • Principle of operation
  • Control
  • Circuit variants
• Repair methods and conversations with customers
  • Selection of repair actions as specified by manufacturers
  • Working with spare part numbers
• Investigation using measuring instruments
• Effect of faults commonly seen in practice (simulated faults can be activated)
• Course duration 7 hours approx.​​

Dimensions/weight:

• 100 x 170 mm (width x height)
• 0.8 kg

Multi13S Digital Multimeter

Universal precision lab multimeter and temperature meter with IR interface for high-quality, universal measurement and testing in educational settings, power plants, process control installations etc.

• 3¾-digit multimeter; resolution: ±3,100 digits
• Measurement classification CATII-1000 V
• Can be connected to UniTrain system via IR interface
• Voltage and current measuring ranges: 30 mV-1000 V DC, 3 V-1000 V AC; 3 mA-16 A DC; 30 mA-10 A AC
• Resistance ranges: 30 ohm-30 Mohm
• Special functions: °C for temperature measurements using PT100/1000 thermocouple (optional accessory)
• Continuity and diode testing
• Automatic range selection and battery shut-off, min./max. and data hold function
• Safety fuse for current measurement range up to 300 mA
• Protection against high currents in the mA range for nominal voltage of 1000 V
• Display with bar chart and backlighting
• Includes protective sleeve, measuring leads, 1 x spare fuse, 9V battery, calibration certificate