ABB REF611 Feeder Protection and Control Relay

Product Description

Configured for feeder protection and control in distribution networks, the ABB REF611E_E REF611HBBABAENA1XE (REF611 feeder protection and control relay) processes phase and earth-fault current signals and provides protection, measurement, control, and substation communication functions within the installed protection system.

Hardware Specifications

Industrial Protection and Communication Characteristics

The REF611 processes CT and, where configured, VT measurement signals for feeder protection functions. Its protection logic includes directional or non-directional phase overcurrent and earth-fault elements.

For communication, the relay supports IEC 61850-based substation automation, including GOOSE messaging. Modbus, DNP3, and IEC 60870-5-103 are also specified communication options. HSR and PRP can provide redundant Ethernet communication when the corresponding communication hardware is installed.

The supplied ordering code REF611HBBABAENA1XE identifies a specific factory configuration. The available information does not provide a verified field-by-field decoding of each suffix position. Therefore, individual auxiliary supply, I/O, and communication-card assignments should be confirmed against the device order documentation before replacement.

Frequently Asked Questions

Q: What current signals can the REF611 process?
A: The supplied specification identifies 1 A / 5 A CT inputs. A sensitive earth-fault input can be included depending on the hardware configuration.

Q: Does the REF611 support redundant Ethernet communication?
A: Yes. HSR and PRP are supported when the corresponding optional communication hardware is installed.

Q: Can the exact hardware configuration be determined only from the REF611 base model?
A: No. The supplied ordering code identifies a specific configuration, but the available data does not provide a complete suffix-by-suffix hardware matrix. Replacement selection should therefore use the complete order code.

Field Installation Guidelines

• Verify the complete REF611 order code before installation or replacement.
• Confirm CT and VT wiring against the protection-system drawings before energizing the relay.
• Keep CT circuits separated from communication and high-energy power wiring.
• Route Ethernet and serial communication cables separately from high-current conductors where practical.
• Apply the site-approved protective-earth and cable-shield termination method.
• Verify the auxiliary supply type and voltage against the installed relay configuration.
• Check binary input and output wiring before enabling protection trips or control commands.
• Confirm IEC 61850, Modbus, DNP3, or IEC 60870-5-103 communication settings before connecting the relay to the station network.
• For HSR or PRP installations, verify the installed communication card and network topology before commissioning.
• Perform secondary injection and functional testing according to the applicable protection test procedure before placing the feeder into service.

Other Attributes

• Series: Advant OCS/800xA
• Country of Origin:  Germany/Sweden/Finland
• Lead Time: In Stock, 2 Working Days

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