3722-IG-002 Installation and User Manual
February 6, 2019
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Safety Features
Tamper Resistent - The J1772 power cord and connector are locked mechanically in the storage position.
Extension - The cable initially lowers to an ADA height, and by pressing the switch on the J1772 connector, the
cable to driven out to the desired length.
Jam Resistent - If you pull the charging cable while it is retracting or if the cable gets caught on anything, cable
retraction will stop. The cable will make one additional attempt to retract. Thereafter, pressing and
releasing the switch on the J1772 connector (Figure 19) will restart the cable retraction process.
Spark Resistent - Electrical power is not applied to the power connector until the J1772 connector is fully inserted into
the power inlet on the Electric Vehicle and communication between the vehicle and charger has been
established. When the switch is pressed on the J1772 connector, voltage is removed.
Shock Resistent - The Model 3722 EVSE is equipped with a Ground Fault Circuit Interrupter (GFCI) which will disconnect
the electrical voltage from the power cord and connector, should current leakage to ground exceed
20 mA. The GFCI circuit is automatically tested at the start of each charge sequence. The GFCI will
attempt three re-closures to see the ground fault cleared before reporting a problem.
Over Current - The Model 3722 EVSE, when in use, continuously monitors the current being delivered to the EV.
Should the current exceed 32A for 15 seconds, the Model 3722 EVSE will disconnect the power to the
EV before the breaker trips. After disconnecting, the 3722 will auto-reset.
Low-Line - The source voltage to the Model 3722 EVSE is continuously monitored while in use. Should the voltage
drop below 180 VAC, the EVSE will disconnect the voltage from the EV to prevent damage to the EV’s
electronic circuits. When the voltage returns to above 200 VAC, the power will be restored to the EV.
Cold Load Start – If power fails while the Model 3722 EVSE is connected and charging an EV, charging will automatically
resume when power is restored. No user intervention is required. The charging will however, be
randomly delayed from 2 to 5 minutes to prevent the power grid from incurring a large power surge.
Plug-Out Detection - The model 3722 EVSE is equipped with a Plug Out Detection circuit that identifies when the connector
is attached to the electric vehicle. This allows the EVSE to immediately remove electric power from the
electric vehicle before the connector is totally removed from the vehicle inlet.
Disconnect Switch - The 3722 is equipped with an internal disconnect switch for locally shutting off power in the event the
unit needs to be serviced or inspected.
Payment Options
A Payment Module is used with the 3722 EVSE in fee-based electric vehicle charging environments to facilitate commercial
transactions. The 3725-104 Payment Module can be located on a pole, nearby on a wall, or mounted remotely from EVSE.
Refer to the 3725 User Manual and Installation Guide for more information about the Payment Module.
Note: A Gateway Module (Model 3727-200) can be used in place of the Payment Module when two-way communication is
required without payment functions. . Refer to the 3727 User Manual and Installation Guide for more information
about the Gateway Module.
Communication Options
There are two communication options available for facilitating communication between the EVSE and payment or gateway
systems:
Serial Connection
A serial connection can be established between one or more 3722 EVSEs and a Payment Module or Gateway. A single serial
Payment Module or Gateway can support from one to eight EVSEs, depending upon its configuration.
