Document ID: chunk:federal_register_of_legislation:F2023L01526:body:0:p43
Version: federal_register_of_legislation:F2023L01526
Segment Type: other
Provision Reference: 
Character Range: 121630–124587

bar);

           (d) Test duration per m2 of surface area of the tested high-voltage component or system: 1 min;

       (e) Minimum test duration: 3 min;

           (f) Distance from nozzle to tested high-voltage component or system surface: approximately 3 m (this distance may be reduced, if necessary to ensure proper wetting when spraying upwards).

    Figure 1
    Standard Nozzle for the Test

       Dimensions in millimetres
       D is 6.3 mm as specified in (a) above.

       2.3. For electrical components, externally attached (e.g. in engine compartment), covered from underneath, the testing authority shall verify, with a view to confirming the compliance, whether:

           (a) The cover protects the component against direct spray water from underneath and is not visible;

       (b) The test is conducted by using splashing test nozzle as shown in Figure 2;

           (c) The moving shield is removed from the spray nozzle and the machine is sprayed from all practicable directions;

           (d) The water pressure is adjusted to give a delivery rate of (10 ± 0.5) l/min (pressure approximately 80 kPa to 100 kPa (0.8 bar to 1.0 bar));

           (e) The test duration is 1 min/m2 of calculated surface area of the machine (excluding any mounting surface and cooling fin) with a minimum duration of 5 min.

    Figure 2
    Splashing Test Nozzle

Note:

1. Cock                        7. Spray nozzle – brass with 121 holes  0,5:
2. Pressure gauge                1. hole in centre
3. Hose                          2. inner circle of 12 holes at 30° pitch
4. Moving shield – aluminium     4. outer circle of 24 holes at 15° pitch
5. Spray nozzle                8. Machine under test
6. Counter weight

       3. The entire high voltage system or each component is checked to comply with the isolation resistance requirement in paragraph 5.1.3. with the following conditions:

           (a) The electric chassis shall be simulated by an electric conductor, e.g. a metal plate, and the components are attached with their standard mounting devices to it;

           (b) Cables, where provided, shall be connected to the component.

       4. The parts designed not to be wet during operation are not allowed to be wet and no accumulation of water which could have reached them is tolerated inside the high-voltage component or system.

Annex 7B

Vehicle-based test procedure for protection against water effects

       1. Washing

        This test is intended to simulate the normal washing of vehicles, but not specific cleaning using high water pressure or underbody washing.

       The areas of the vehicle regarding this test are border lines, i.e. a seal of two parts such as flaps, glass seals, outline of opening parts, outline of front grille and seals of lamps.

       All border lines shall be exposed and followed in all directions with the water stream using a hose nozzle and conditions in accordance