54
“Operation and installation manual”
EN
7.1.2.1 Overcurrent protection
An external overcurrent protection device shall be installed to protect the line from medium voltage transformer
to EVSE. The protection system can be chosen between the 3 options below:
1. Main Switch 3P + 3x fuses
2. Fuse switch 3P
3. Circuit Breaker 3P
NOTE
In weak grids the AC voltage may vary from nominal voltage; in these conditions EVSE works
with higher input current then nominal one. This information has to be taken in consideration to
properly select the overcurrent protection device.
The below table provides the technical data to size the overcurrent protection:
AC input voltage [V]
AC input current [A]
Terra 94
Nom. 480
115
Recommended input circuit breaker
150
Terra 124
Nom. 480
153
Recommended input circuit breaker
200
Terra 184
Nom. 480
230
Recommended input circuit breaker
300
7.1.3 Internet access
ABB requires an Internet connection to the charger for remote service operations including diagnosis,
troubleshooting and performing software/firmware update.
It is the installer’s responsibility to ensure reliable Internet connection to the charger. Contingency planning
and the associated costs are the responsibility of the installer.
There are two options for the Internet connection:
• Internet via cellular network connection
• Internet via Ethernet connection
7.1.3.1 Internet via cellular network connection
Connection to the charger using the charger’s standard featured hardware with ABB’s Charger Connect service
offering, is the preferred method. This solution provides Internet access via 4G LTE wireless network. It is
expected that a cellular availability test is performed prior to construction to ensure there is reasonable signal
quality to at least one of the above-mentioned operators 4G LTE bands 2 (1900 MHz), 4 (1700/2100MHz), or 12
(700 MHz).
NOTE
Signal strength must be greater than -85 dBm (RSSI) and measured with a cellular signal meter.
NOTE
The Charger supports SIM cards provided by ABB only. Any other types of SIM cards are not
supported.
7.1.3.2 Internet via Ethernet connection
If the cellular connection is not available, Ethernet connection must be made to the charger.
NOTE
Once the charger is connected to the fixed Local Area Network (LAN), some settings must be
performed by ABB service. Contact ABB for more details.