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CPE250-CMT Overview
The Express 250 is a DC fast charging station for electric vehicles. It converts three-phase power
from its associated building (callout a in the image below) to DC power to charge the vehicle. A
ground conductor also runs in conduit a. Shunt trip wiring (b, optional) is run from the station to the
breaker panel to automatically shut down the station if a fault or hazard is detected, such as a
damaged cover panel or impact from a vehicle.
If two Express 250 stations are “paired”, they share DC power to allow faster (higher amperage)
charging to a vehicle as needed. In this case, DC conductors (d) are run between the stations, as is
an Ethernet wire (c) for communication.
Note: Each Express 250 communicates with ChargePoint using a cellular network. No
communication wiring is needed between the station and the building.
An assembled CPE250-CMT template is shown below with the positions of all conduit and anchor
bolts.
Note: A separate CPE250-CMT is required for each charging station (two per Paired installation).
a. AC conduit
b. Shunt trip conduit
c. Anchor bolts (x4)
d. Ethernet conduit (Paired installations only)
e. DC conduit (Paired installations only)
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