GE Industrial Solutions NEMA EVSE CHARGING STATION - Manual (Page 58)

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EV Charging Station User Manual & Installation Instructions
GE EV Charging Station User Manual 58 of 86
4 Network Setup Instructions
This chapter details design recommendations for a GE EV Charging Station Network Infrastructure.
Network setup is required for installations that use RFID authentication. It is not required for EVSE that
do not use RFID authentication.
This section of the installation document covers the options for connecting the charging stations with
a PC hosting the EV100 GE EV Charging Station Manager Application software.
4.1 Definitions and Terms
Certain terms are used throughout this chapter; in order to avoid misinterpretation, several of the
more commonly used terms are defined below.
o CS: Charging Station. These are individual units that provide electrical charging services to
vehicle at a time. (Double pedestal provides charging to two)
o
Host System/Host PC: The PC that runs the GE EV Charging Station Manager Application to
manage authorization and collect data from the Charging Stations.
o Firewall: A network security device that provides controlled access between two or more
network segments, denying anything except approved communications between the various
network segments.
o
DMZ: Demilitarized Zone. An isolated network segment attached to a separate connection point
on a firewall. This segment is then granted specific access to or from any other “Zone” to
control who/what can connect INTO the DMZ or what the system or systems within the DMZ
can connect OUT to.
o
Switch: A network device that provides multiple connection points for attaching devices to an
individual segment of a communications network. For the purpose of this document, they are
Ethernet network switches.
o
NIC: Network Interface Card. A PC card with an RJ45 port that provides Ethernet connectivity.
o Service laptop or PC: A laptop or PC used to configure individual EVSE stations via direct
Ethernet connection (use a cross-connected cable)
4.2 Firewall and Security Considerations
o Firewall.
Any firewall used to provide isolation from the charging station network to any other network should,
at a minimum, provide “Statefull Packet Inspection”.
Anything less would not provide acceptable security and protection. SOHO firewalls are available
that provide this capability but there are some which do not.