ABB RELION REX640 User Manual

1
2
Figure 2: Hardware module slot overview of the REX640 relay
1
Slot markings in enclosure (top and bottom)
2 Ready LED
The relay has a nonvolatile memory which does not need any periodical
maintenance. The nonvolatile memory stores all events, recordings and logs to a
memory which retains data if the relay loses its auxiliary supply.
3.3 Local HMI
The LHMI is used for setting, monitoring and controlling the protection relay and
the related process. It comprises a 7-inch color screen with capacitive touch sensing
and a Home button at the bottom of the LHMI.
The LHMI is an accessory for the relay which is fully operational even
without the LHMI.
REX640 overview 1MRS759118 D
16 REX640
Operation Manual

ABB RELION REX640 Specifications

General

Model	RELION REX640
Category	Protection Device
Communication Protocols	IEC 61850, Modbus, DNP3, IEC 60870-5-103
Display	LCD
Rated Voltage	100-240 V AC/DC
Rated Frequency	50/60 Hz
Protection Functions	Overcurrent, Earth Fault, Overvoltage, Undervoltage, Frequency
Mounting	Rack mounting
Inputs/Outputs	Analog inputs
Housing	Metal
Input Voltage	24-250 V DC / 100-240 V AC
Operating Temperature	-25°C to +70°C
Enclosure	IP20