ABB REX640 User Manual

Table 170. Fault locator (SCEFRFLO)
Characteristic Value
Measurement accuracy At the frequency f = f
n
Impedance:
±2.5% or ±0.05 Ω
Distance:
±2.0% or ±0.04 km/0.025 mile
XC0F_CALC:
±3% or ±0.01 Zn/1.15 Ω
IFLT_PER_ILD:
±5% or ±0.05
Table 171. Fault locator (SCEFRFLO) main settings
Parameter
Function Value (Range) Step
Z Max phase load SCEFRFLO 1.0...10000.0 Ω 0.1
Ph leakage Ris SCEFRFLO 20...1000000 Ω 1
Ph capacitive React SCEFRFLO 10...1000000 Ω 1
R1 line section A SCEFRFLO 0.000...1000.000 Ω/pu 0.001
X1 line section A SCEFRFLO 0.000...1000.000 Ω/pu 0.001
R0 line section A SCEFRFLO 0.000...1000.000 Ω/pu 0.001
X0 line section A SCEFRFLO 0.000...1000.000 Ω/pu 0.001
Line Len section A SCEFRFLO 0.000...1000.000 pu 0.001
Table 172. Load-shedding and restoration (LSHDPFRQ)
Characteristic
Value
Operation accuracy f< ±5 mHz
df/dt ±100 mHz/s (in range |df/dt| < 5 Hz/s)
± 2.0% of the set value (in range 5 Hz/s < |df/dt| < 15 Hz/s)
Start time f< <80 ms
df/dt <120 ms
Reset time <150 ms
Operate time accuracy ±1.0% of the set value or ±30 ms
1MRS759144 A
REX640
Product version: 1
82 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