Document ID: chunk:federal_register_of_legislation:F2025L00028:reg:3:p5
Version: federal_register_of_legislation:F2025L00028
Segment Type: reg
Provision Reference: reg 3 (pt 5/11)
Character Range: 132551–135607

shall not be carried out when, during the tests described in Annex 4 of this Regulation: where there has been no head contact, or when the head contacted the window glazing only, provided that the window glazing is not laminated glass.

              2.1.1.2. The body block impactor, defined in paragraph 3.2.1. below, shall hit at 24.1 km/h in the lateral area impacted by the EUROSID shoulder, arm and thorax, during the approval of the vehicle. Test result shall be recorded, and the HPC calculated.

              2.2. Approval test

              2.2.1. Using the new padding materials, seat, etc. presented for the approval extension, and mounted in a new lateral structure of the vehicle, tests specified in paragraphs 2.1.1.1. and 2.1.1.2. above, shall be repeated, the new results recorded, and their HPC calculated.

              2.2.1.1. If the HPC calculated from the results of both approval tests are lower than the HPC obtained during the reference tests (carried out using the original type approved padding materials or seats), the extension shall be granted.

              2.2.1.2. If the new HPC are greater than the HPC obtained during the reference tests, a new full scale test (using the proposed padding/seats/etc.) shall be carried out.

              3. Test equipment

              3.1. Head form impactor (Figure 2)

              3.1.1. This apparatus consists of a fully guided linear impactor, rigid, with a mass of 6.8 kg. Its impact surface is hemispherical with a diameter of 165 mm.

              3.1.2. The head form shall be fitted with two accelerometers and a speed-measuring device, all capable of measuring values in the impact direction.

              3.2. Body block impactor (Figure 3)

              3.2.1. This apparatus consists of a fully guided linear impactor, rigid, with a mass of 30 kg. Its dimensions and transversal section is presented in Figure 3.

              3.2.2. The body block shall be fitted with two accelerometers and a speed-measuring device, all capable of measuring values in the impact direction.

Annex 9
Test procedures for the vehicles equipped with electric power train
       This annex describes test procedures to demonstrate compliance to the electrical safety requirements of paragraph 5.3.7. For example, megohmmeter or oscilloscope measurements are an appropriate alternative to the procedure described below for measuring isolation resistance. In this case it may be necessary to deactivate the on-board isolation resistance monitoring system.

       Before the vehicle impact test conducted, the high voltage bus voltage (Ub) (see Figure 1) shall be measured and recorded to confirm that it is within the operating voltage of the vehicle as specified by the vehicle manufacturer.

              1. Test setup and equipment

              If a high voltage disconnect function is used, measurements are to be taken from both sides of the device performing the disconnect function.

              However, if the high voltage disconnect is integral to the REESS or