ABB REX640 User Manual

Table 12. Binary inputs
Description Value
Operating range ±20% of the rated voltage
Rated voltage 24...250 V DC
Current drain 1.6...1.9 mA
Power consumption 31.0...570.0 mW
Threshold voltage 16...176 V DC
Ripple in the DC auxiliary voltage Max 15% of the DC value (at frequency of 100 Hz)
Table 13. RTD/mA inputs and mA outputs
Description
Value
RTD inputs Supported RTD sensors 100 Ω platinum
250 Ω platinum
100 Ω nickel
120 Ω nickel
250 Ω nickel
TCR 0.00385 (DIN 43760)
TCR 0.00385
TCR 0.00618 (DIN 43760)
TCR 0.00618
TCR 0.00618
Supported resistance range 0...4 kΩ
Maximum lead resistance (three-
wire measurement) 100 Ω per lead
Isolation 2 kV (inputs to protective earth)
Response time <1 s
RTD/resistance sensing current <1 mA rms
Operation accuracy Resistance Temperature
± 2.0% or ±1 Ω ±1°C
mA inputs Supported current range ±0…20 mA
Current input impedance 44 Ω ±0.1%
Operation accuracy ±0.5% or ±0.01 mA
mA outputs Supported current range ±0…20 mA
Maximum loop impedance 700 Ω
Operation accuracy ±0.1 mA
Table 14. Signal outputs and IRF output
Description
Value
Rated voltage 250 V AC/DC
Maximum continuous burden (resistive load, AC) 1250 VA
Continuous contact carry 5 A
Make and carry for 3.0 s 10 A
Make and carry 0.5 s 15 A
Breaking capacity when the control-circuit time constant L/R<40 ms, at
48/110/220 V DC
1 A/0.25 A/0.15 A
Minimum contact load 10 mA at 5 V AC/DC
1MRS759144 A
REX640
Product version: 1
30 ABB

ABB REX640 Specifications

General

Device Type	Protection Relay
Communication Protocols	IEC 61850, Modbus, DNP3, IEC 60870-5-103
Rated Frequency	50/60 Hz
Operating Temperature Range	-25°C to +55°C
Display	LCD
Housing	Metal
Manufacturer	ABB
Model	REX640
Mounting	Rack mounting
Inputs and Outputs	Configurable binary inputs and outputs
Rated Voltage	48-240 V AC/DC
Protection Functions	Overcurrent, Earth Fault
Input Voltage	48-240 V AC/DC
Certifications	CE, UL, IEC