AH54.00-P-0010-01A Note on High-Voltage on-Board Electrical System

AH54.00-P-0010-01A Note On High-voltage On-board Electrical System

General
The high-voltage on-board electrical system consists of several components. The individual components are connected to each other by high-voltage conducting electrical lines and voltage distributor.

Marking
All components of the high-voltage on-board electrical system are marked with a yellow adhesive warning label on which the pictogram for high-voltage is represented.
All electrical lines for high voltages are marked by a warning color (orange).

Activities, general
A special qualification measure is required for repair, maintenance and diagnosis activities on vehicles with high-voltage on-board electrical systems. (sensitization training when handling high voltage on-board electrical systems).

For enabling (de-energized) of the high-voltage on-board electrical system before activities on vehicles with high-voltage on-board electrical system and for the following initial startup, a special electrotechnical training as well as authorization is mandatory. Persons not proven to have taken part in special qualification measures and who have neither completed a special electrotechnical training nor are authorized, may not carry out any activities on high-voltage on-board electrical systems.

Measures for activities
Before starting activities on high-voltage on-board electrical systems, the production of a de-energized condition and its safeguarding for the duration of the activities to be carried out, must be ensured.

This must be done whilst observing and complying with the following safety rules, the application of which must be the rule:
- Enable (de-energized)
- Secure against switching on again
- Check and secure safe isolation from supply

The measuring instruments and aids to be used must be checked for faultless condition before their use.

For activities on high-voltage on-board electrical systems the following notes should be observed and adhered to:
- Cable lugs, contactings and electrical connectors should be protected against dirt with suitable protective bags
- Contactings, electrical lines and electrical connectors should be checked for dirt and damage before assembly, if necessary they should be cleaned or replaced.
- Screw contacts should be tightened with the specified torque and if necessary the tightening angle.