22.11.2022
EN
Official Journal of the European Union
L 302/41
Figure 7 Characteristics of the DC-charging-AN impedance
4.
Artificial Mains networks (AMN) For a vehicle in charging mode connected to an AC power mains, a 50 μH / 50 Ω-AMN as defined in CISPR 16-1-2 clause 4.4 shall be used.
Measurement ports of AMN(s) shall be terminated with 50 Ω loads.
5.
Asymmetric artificial network (AAN) Currently, different technologies for signal/control port lines and/or wired network port lines are used for the communication between charging station and vehicle.
Therefore, a distinction between some specific signal/control port lines and/or wired network port lines (for example, control pilot line, CAN lines) is necessary.
Measurement ports of AAN(s) shall be terminated with 50 Ω loads.
AANs that are defined in 5.1., 5.2., 5.3. and 5.4. are used for unshielded signal/control port lines and/or wired network port lines.
If shielded signal/control port lines are used, then shielded AANs defined in CISPR 32:2015 Annex G, Figures G.10 and G.11 should be used.
5.1.
Signal/Control port with symmetric lines An asymmetric artificial network (AAN) to be connected between the vehicle and the charging station or any associated equipment (AE) used to simulate communication is defined in CISPR 16-1-2 Annex E clause E.2 (T network circuit) (see example in Figure 8).
The AAN has a common mode impedance of 150 Ω.
The impedance Zcat adjusts the symmetry of the cabling and attached periphery typically expressed as longitudinal conversion loss (LCL).
The value of LCL should be prede­ termined by measurements or be defined by the manufacturer of the charging station/charging harness.
The selected value for LCL and its origin shall be stated in the test report.
CAN communication is an example of symmetric lines used for vehicle DC charging mode.
If an original charging station can be used for the test, an AAN is not required for CAN communication.
If the CAN communication is emulated and if the presence of the AAN prevents proper CAN communication, then no AAN should be used.