Document ID: chunk:federal_register_of_legislation:F2023L01526:body:0:p12
Version: federal_register_of_legislation:F2023L01526
Segment Type: other
Provision Reference: 
Character Range: 34348–37351

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 (IPXXB) as described in Annex 3.
         2.36. "Protection degree IPXXD" means protection from contact with high voltage live parts provided by either an electrical protection barrier or an enclosure and tested using a Test Wire (IPXXD) as described in Annex 3.
         2.37. "Rechargeable Electrical Energy Storage System (REESS)" means the rechargeable energy storage system that provides electric energy for electrical propulsion.
         A battery whose primary use is to supply power for starting the engine and/or lighting and/or other vehicle auxiliaries' systems is not considered as a REESS.
         The REESS may include the necessary systems for physical support, thermal management, electronic controls and casing
         2.38. "REESS subsystem" means any assembly of REESS components which stores energy. A REESS subsystem may or may not include the entire management system of the REESS.
         2.39. "Rupture" means opening(s) through the casing of any functional cell assembly created or enlarged by an event, large enough for a 12 mm diameter test finger (IPXXB) to penetrate and make contact with live parts (see Annex 3).
         2.40. "Service disconnect" means the device for deactivation of the electrical circuit when conducting checks and services of the REESS, fuel cell stack, etc.
         2.41. "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
         2.42. "Specific voltage condition" means the condition that the maximum voltage of a galvanically connected electrical circuit between a DC live part and any other live part (DC or AC) is ≤ 30 V AC (rms) and ≤ 60 V DC.
         Note 1: When a DC live part of such an electrical circuit is connected to chassis and the specific voltage condition applies, the maximum voltage between any live part and the electrical chassis is ≤ 30 V AC (rms) and ≤ 60 V DC.
         Note 2: For pulsating DC voltages (alternating voltages without change of polarity) the DC threshold shall be applied.
         2.43. "State of Charge (SOC)" means the available electrical charge in a Tested-DeviceTested-Device expressed as a percentage of its rated capacity.
         2.44. "Tested-Device" means either complete REESS or REESS subsystem that is subjected to the tests prescribed by this Regulation.
         2.45. "Thermal event" means the condition when the temperature within the REESS is significantly higher (as defined by the manufacturer) than the maximum operating temperature.
         2.46. "Thermal runaway" means an uncontrolled increase of cell temperature caused by exothermic reactions inside the cell.
         2.47. "Thermal propagation" means the sequential occurrence of thermal runaway within a REESS triggered by thermal runaway of a cell in