Document ID: chunk:federal_register_of_legislation:F2023L01526:body:0:p9
Version: federal_register_of_legislation:F2023L01526
Segment Type: other
Provision Reference: 
Character Range: 25714–28967

Thermal shock and cycling test

       9C Mechanical shock

       9D Mechanical integrity

       9E Fire resistance

       Appendix 1 - Dimension and technical data of firebricks

       9F External short circuit protection

       9G Overcharge protection

       9H Over-discharge protection

       9I Over-temperature protection

       9J Over-current protection

1. Scope
         1.1. Part I: Safety requirements with respect to the electric power train of road vehicles of categories M and N[1], with a maximum design speed exceeding 25 km/h, equipped with electric power train, excluding vehicles permanently connected to the grid.
         Part I of this regulation does not cover;
              (a) Post-crash safety requirements of road vehicles.
              (b) High voltage components and systems which are not galvanically connected to the high voltage bus of the electric power train.
         1.2. Part II: Safety requirements with respect to the Rechargeable Electrical Energy Storage System (REESS), of road vehicles of categories M and N equipped with electric power train, excluding vehicles permanently connected to the grid.
         Part II of this Regulation does not apply to a battery whose primary use is to supply power for starting the engine and/or lighting and/or other vehicle auxiliaries' systems.
2. Definitions
         For the purpose of this Regulation the following definitions apply:
         2.1. "Active driving possible mode" means the vehicle mode when application of pressure to the accelerator pedal (or activation of an equivalent control) or release of the brake system will cause the electric power train to move the vehicle.
         2.2. "Aqueous electrolyte" means an electrolyte based on water solvent for the compounds (e.g. acids, bases) providing conducting ions after its dissociation.
         2.3. "Automatic disconnect" means a device that when triggered, conductively separates the electric energy sources from the rest of the high voltage circuit of the electric power train.
         2.4. "Breakout harness" means connector wires that are connected for testing purposes to the REESS on the traction side of the automatic disconnect
         2.5. "Cell" means a single encased electrochemical unit containing one positive and one negative terminals, which exhibits a voltage differential across its two terminals and used as rechargeable electrical energy storage device.
         2.6. "Conductive connection" means the connection using connectors to an external power supply when the Rechargeable Electrical Energy Storage System (REESS) is charged.
         2.7. "Connector" means the device that provides mechanical connection and disconnection of high voltage electrical conductors to a suitable mating component including its housing
         2.8. "Coupling system for charging the Rechargeable Electrical Energy Storage System (REESS)" means the electrical circuit used for charging the REESS from an external electric power supply including the vehicle inlet.
         2.9. "C Rate" of "n C" is defined as the constant current of the Tested-DeviceTested-Device, which takes 1/n hours to charge or discharge the Tested-DeviceTested-Device between 0 per cent of the state of charge