ISO 17409:2020 pdf free.Electrically propelled road vehicles -Conductive power transfer一Safety
requirements.
4 Environmental and operational conditions
The requirements given in this document shall be met across the range of environmental conditions
for which the electric vehicle is designed to operate when connected to an external electric circuit (e.g. external electric power supply), as specified by the vehicle manufacturer.
NOTE See the ISO 16750 series, ISO PAS 19295 and the ISO 19453 series for guidance.
The requirements specified in this document shall be fulfilled under all relevant energy levels (e.g. SOC of RESS) of the electric power sources of the EV.
6 Requirements for protection of persons against electric shock
6.1 General
The requirements given in Iso 6469-3 apply to the on-board section of the vehicle power supply circuit when not connected to an external electric circuit.
6.2 Basic protection when connected to an external electric circuit
In case A, the degree of protection against contact with voltage class B live parts shall be at least IPXXD according to ISO 20653 when the plug is mated to the corresponding socket-outlet. This requirement is deemed to be met if the vehicle is equipped with an EV plug according to the IEC 62196 series.
In cases B and C, the degree of protection against contact with voltage class B live parts shall be at least IPXXD according to ISO 20653 when the vehicle connector is mated to the vehicle inlet. This requirement is deemed to be met if the vehicle is equipped with a vehicle inlet according to the IEC 62196 series.
For case D and E the vehicle manufacturer shall perform a safety analysis under consideration of IEC 61140. Additional requirements for case D and E are under consideration.
EXAMPLE In case D and case E, the degree of protection against contact with voltage class B live parts is at least IPXXD according to ISO 20653 when the ACD and the ACD counterpart are mated.
Conformance is checked by inspection.
NOTE The requirements for unmated contacts are specified in 6.5.
6.3 Protective conductor
The plug [case A), the vehicle inlet [case B and case C), the ACD counterpart (case D) or the ACD (case E] shall have a contact for connecting the vehicle’s electric chassis to the protective conductor of an external electric circuit.
The protective conductor terminal of the plug (case A), the vehicle inlet [case B and case C], the ACD
counterpart (case D} or the ACD [case E) shall be connected:
1) to the vehicle electric chassis with a protective conductor, see Figure 1, or
2) to the exposed conductive parts of the components of the vehicle power supply circuit with a
protective conductor, see Figure 2.
At least one of the following requirements applies for each contact of the EV plug (case A), the vehicle inlet (case B and case C), the ACD counterpart (case D) or the ACD (case E) when it is not mated:
— the contact shall be protected by the degree of protection IPXXD according to ISO 20653;
— the voltage between the contact and any other contact not protected by IPXXD according to ISO 20653 as well as the voltage between the contact and the electric chassis shall be below 60 V DC and 3OVAC;
— the steady state touch current between the contact and any other contact not protected by IPXXD according to ISO 20653 as well as the steady state touch current between the contact and the electric chassis shall be below 0,5 mA AC and 2 mA DC and the stored energy between the contact and any other contact not protected by IPXXD according to ISO 20653 as well as the stored energy between the contact and the electric chassis shall not cause a startle reaction. The limit shall be specified by the OEM under the consideration of the IEC 60479 series.
NOTE 1 The thresholds for steady state touch current are derived from IEC 61140 and IEC 60479-1.
NOTE 2 The energy stored in electrical power sources (e.g. RESS) that is only available through a sufficiently high protective impedance which limits the touch current is not relevant.
NOTE 3 A threshold of perception and a threshold of pain are defined in IEC 60479-2.
NOTE 4 According to IEC 60479-2 the threshold of pain is the specific charge or specific energy. The specific energy given in IEC 60479-2 might not correlate with the fault case for the inlet.
The steady state touch current requirement is deemed to be fulfilled if it can be proven by design review, that there is no conductive path from electrical power sources (e.g. RESS) to accessible conductive parts.ISO 17409 pdf download.