Document ID: chunk:federal_register_of_legislation:F2025L00028:front:0:p7
Version: federal_register_of_legislation:F2025L00028
Segment Type: other
Provision Reference: 
Character Range: 20718–24061

and may also include the REESS, the electrical energy conversion system, the electronic converters, the associated wiring harness and connectors, and the coupling system for charging the REESS.

              2.19. "Live parts" means conductive part(s) intended to be electrically energized under normal operating conditions.

              2.20. "Exposed conductive part" means the conductive part which can be touched under the provisions of the protection degree IPXXB and which is not normally energized, but which can become electrically energized under isolation failure conditions. This includes parts under a cover that can be removed without using tools.

              2.21. "Direct contact" means the contact of persons with high voltage live parts.

              2.22. "Indirect contact" means the contact of persons with exposed conductive parts.

              2.23. "Protection degree IPXXB" means protection from contact with high voltage live parts provided by either an electrical protection barrier or an enclosure and tested using a Jointed Test Finger (degree IPXXB) as described in paragraph 4. of Annex 9.

              2.24. "Working voltage" means the highest value of an electrical circuit voltage root-mean-square (rms), specified by the manufacturer, which may occur between any conductive parts in open circuit conditions or under normal operating conditions. If the electrical circuit is divided by galvanic isolation, the working voltage is defined for each divided circuit, respectively.

              2.25. "Coupling system for charging the Rechargeable Electrical Energy Storage System (REESS)" means the electrical circuit used for charging the REESS from an external electrical power supply including the vehicle inlet.

              2.26. "Electrical chassis" means a set made of conductive parts electrically linked together, whose electrical potential is taken as reference.

              2.27. "Electrical circuit" means an assembly of connected live parts which is designed to be electrically energized in normal operation.

              2.28. "Electrical energy conversion system" means a system (e.g. fuel cell) that generates and provides electrical energy for electrical propulsion.

              2.29. "Electronic converter" means a device capable of controlling and/or converting electrical power for electrical propulsion.

              2.30. "Enclosure" means the part enclosing the internal units and providing protection against any direct contact.

              2.31. "High voltage bus" means the electrical circuit, including the coupling system for charging the REESS, that operates on a high voltage.

               Where electric circuits are galvanically connected to each other and fulfil the specific voltage condition, only the components or parts of the electric circuit that operate on high voltage are classified as a high voltage bus.

              2.32. "Solid insulator" means the insulating coating of wiring harnesses, provided in order to cover and prevent the high voltage live parts from any direct contact.

              2.33. "Automatic disconnect" means a device that when triggered, galvanically separates the electrical energy sources from the rest of the high voltage circuit of the electric power train.

              2.34. "Open type traction battery"