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General| Product Type | Feeder Protection Relay |
|---|---|
| Type | REF611 |
| Current Input | 1 A / 5 A |
| Frequency | 50/60 Hz |
| Binary Inputs | 8 |
| Binary Outputs | 6 |
| Protection Functions | Overcurrent, Earth Fault, Thermal Overload, Circuit Breaker Failure |
| Overcurrent Protection | Yes |
| Earth Fault Protection | Yes |
| Thermal Overload Protection | Yes |
| Circuit Breaker Failure Protection | Yes |
| Display | LCD |
| Communication Protocols | Modbus |
| Communication | Ethernet |
| Mounting | DIN rail mounting |
| Protection Degree | IP54 |
Describes the purpose and use of the application manual for protection functions and settings.
Targets protection and control engineers with electrical power engineering experience.
Outlines the set of manuals and related documentation for the REF611 series.
Explains warning symbols, icons, and document conventions used throughout the manual.
Introduces the REF611 relay as a dedicated feeder protection device and its features.
Describes the relay's construction into plug-in unit and case.
Details the Local Human-Machine Interface, including display, LEDs, and keypad.
Explains access and functions via the Web Human-Machine Interface.
Covers supported communication protocols like IEC 61850 and Modbus.
Presents the three alternative configurations (A, B, C) available for the REF611 relay.
Provides visual diagrams showing physical connections for configurations A, B, and C.
Details the applications and functionality overview for Configuration A.
Details the applications and functionality overview for Configuration B.
Details the applications and functionality overview for Configuration C.
Describes the various input terminals for phase currents, residual current, voltage, and binary inputs.
Details the output contacts for tripping, controlling, and signalling purposes.
Explains the IRF contact as an output for the self-supervision system.
Series of relays for low-end protection and supervision applications.
Intelligent electronic device for protection and control relay.
Local human-machine interface for device interaction.
Protection and Control IED Manager software.
Web human-machine interface for remote access.
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