General Specifications
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Manufacturer: ABB
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Model: REF611
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Product Family: Relion® 611 protection and control series
Protection Features
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Overcurrent Protection: Available with directional or non-directional options.
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Directional Overcurrent Protection: Suitable for isolated neutral or compensated networks.
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Non-directional Overcurrent Protection: Suitable for directly earthed or low-impedance earthed neutral networks.
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Earth-fault Protection:
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Directional Earth-fault Protection: Ideal for isolated or compensated networks.
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Non-directional Earth-fault Protection: Intended for directly or low-impedance earthed neutral networks.
Design and Configuration
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Pre-configured Functions: Delivered pre-configured and factory-tested to minimize engineering and commissioning time.
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Compact Design: Suitable for both new installations and retrofits.
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Withdrawable Plug-in Unit Design: Facilitates quick installation and testing.
Communication Capabilities
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Self-healing Communication: Based on High-availability Seamless Redundancy (HSR) and Parallel Redundancy Protocol (PRP) using an optional second Ethernet bus.
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Standards Supported: IEC 61850 Editions 1 and 2, including binary GOOSE messaging.
User Interface
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Web-based HMI: Powerful, user-friendly web-browser-based human-machine interface.
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I/O Matrix: Visual selections for input/output matrix to ease configuration.
Standard Configurations
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Application-specific Standard Configurations: Designed to reduce relay setup and commissioning time.
Key Benefits
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Reduced Engineering and Commissioning Time: Thanks to pre-configured and factory-tested functions.
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Flexibility: Suitable for a wide range of network types and configurations.
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Ease of Installation and Testing: Enabled by the withdrawable plug-in unit design.
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Enhanced Communication: Self-healing Ethernet-based communication for increased reliability and redundancy.
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User-friendly Interface: Simplifies interaction and configuration with a visual, web-based interface.
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