GE Industrial Solutions WattStation Pedestal EVSE Charger Operation and Maintenance - Manual (Page 14)

WattStation™ EV Charger User Manual
14 GE Energy ©2012 GE Company All Rights Reserved
3.3.1 Supplemental overload Protection
The controller will open the main power contactor at 125% of nominal current for NEMA.
3.3.2 Ground Fault protection
Pedestal WattStation includes 15 - 20 mA GF protection per UL 2231. The EVSE provides fault
indication if a ground fault has occurred. The fault will automatically reset per UL 2231 if the fault has
occurred after charging has begun. This reset will occur after 15 minutes. Only 4 automatic retries
can occur in a charging session. Unplugging the EVSE connector from the vehicle will close out a
charging session and reset the number of automatic retries. If the ground fault is detected
immediately after charging, the EVSE will stop charging and indicate a fault.
3.3.3 Ground Monitor Interrupter
The EVSE will perform ground monitoring on the line and load side per UL 2231. Ground monitoring
on the load side requires the EVSE to stop or not initiate charging if earth ground is broken between
vehicle and EVSE. Ground monitoring on the line side requires the EVSE to stop initiate charging if
earth ground is not present on the incoming power side of the EVSE. If the ground monitor detects the
loss of ground on the vehicle side of the EVSE, the EVSE will disconnect the contactor if charging or
prevent charging if the vehicle is requesting charge. If the ground monitor detects the loss of ground
on the line side of the EVSE, the LED ring will indicate fault and prevent the EVSE from charging a
vehicle.
3.3.4 Ventilation Fault
If a vehicle requests facility ventilation, the Pedestal WattStation will not charge the vehicle and issue
a fault indication on the LED Ring and fault icon. The fault will be cleared once the EVSE connector is
removed from the vehicle.
3.3.5 Metering
Pedestal WattStation measures the voltage, current, power and Energy consumed by the EV during a
charge and the measured data is available through Modbus or WattStation Connect.
3.3.6 RFID
The RFID reader will scan RFID cards and pass the scanned information to WattStation Connect for
user authorization.
The RFID reader is certified as an intentional radiator per FCC Part 15 Subpart C rules and has been
granted the following Federal Communication Commission and Industry Canada (Industrie Canada)
identification numbers.
3.4 GE WattStation Connect
GE WattStation Connect is a server application that allows owners to configure and monitor their EVSEs
remotely. GE WattStation Connect also handles RFID authentication and setup. The customer will access GE
WattStation Connect through their web browser on their PC
FFC CC C IID D JJQ Q66--M MC CLLAASSSS1155N N
IIC C IID D 22223366BB--M MC CLLAASSSS1155N N