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ABB RELION REX640 Technical Manual

ABB RELION REX640
1960 pages
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Figure 299: Measured current as a function of the rotor earth-fault resistance with
various field-to-earth capacitance values with the measuring circuit resistance Rm =
3.0 Ω, fn = 50 Hz. Only one coupling capacitor is used.
4.2.5.7 Signals
1MRS759142 F
Protection functions
REX640
Technical Manual
519

Table of Contents

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Questions and Answers:

ABB RELION REX640 Specifications

General IconGeneral
ModelRELION REX640
CategoryProtection Device
Communication ProtocolsIEC 61850, Modbus, DNP3, IEC 60870-5-103
DisplayLCD
Rated Voltage100-240 V AC/DC
Rated Frequency50/60 Hz
Protection FunctionsOvercurrent, Earth Fault, Overvoltage, Undervoltage, Frequency
MountingRack mounting
Inputs/OutputsAnalog inputs
HousingMetal
Input Voltage24-250 V DC / 100-240 V AC
Operating Temperature-25°C to +70°C
EnclosureIP20

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