SMA eCharger - Network Cable Requirements; Signal Cable Requirements

6 Electrical Connection
SMA Solar Technology AG
Operating manualEVC22-3AC-20-BE-en-1042
Note that loads with high power consumption can cause the charging stations to disconnect from
the utility grid to ensure overload protection.
Number of active charging stations
Charging length
Charging current per line conductor (A)
Number of active charging stations
Charging length
Charging current per line conductor (A)
Nominal current at the point of interconnection: 35A
Figure 11: Charge current limitation
6.1.7 Network cable requirements
The cable length and quality affect the quality of the signal. Observe the following cable
requirements:
☐ Cable type: 100BaseTx
☐ Cable category: minimum CAT5e
☐ Plug type: RJ45 of Cat5, Cat5e or higher with metal enclosure
☐ Shielding: SF/UTP, S/UTP, SF/FTP or S/FTP
☐ Number of insulated conductor pairs and insulated conductor cross-section: at least 2 x 2 x
0.22 mm²
☐ Maximum cable length between two nodes when using patch cables: 50m
☐ Maximum cable length between two nodes when using installation cables: 100m
☐ UV-resistant if installed outdoors.
6.1.8 Signal cable requirements
The cable length and quality affect the quality of the signal. Observe the following cable
requirements:
☐ Conductor cross-section: 0.5mm² to 0.75mm²
☐ External diameter: Max. 8mm
☐ Maximum cable length: 100m
☐ Insulation stripping length: 6mm
☐ Sheath stripping length: 150mm
☐ UV-resistant for outdoor use