Relion REF601

ABB RELION REF601

Entry-level feeder protection and control relay for secondary distribution, basic protection.

ABB RELION REF601

ABB Relion REF601 is an entry-level feeder protection and control relay for secondary distribution. ABB Relion REF601 protection and control relay offers main protection for overhead lines and cable feeders in solidly earthed, resistance-earthed or isolated networks. ABB Relion REF601 also offers serial communication (Modbus RTU and IEC-103) for easy connection. It is compliant with IEC/ ANSI/CN and CEI standards.

ABB’s protection relays are available for original equipment manufacturers (OEM), panel builders and Engineering, Procurement and Construction (EPCs) partners to incorporate in their own installations or for use in new, retrofit or upgrade projects.

It provides an optimized composition of protection, monitoring and control functionality in one unit, including pre-configured functionality for easy and fast commissioning of medium voltage switchgear. To emphasize the simplicity of relay’s usage, only application specific parameters need to be set within the relay’s intended area of application.

ABB Relion REF601 leverages the same configuration software as all ABB Relion protection and control products.

PRODUCT SCOPE

REF601 - Feeder protection
- Current protection
- Bay control
- Transformer protection
- Line distance protection
- Line differential protection
- Motor protection
- Generator protection
- Busbar protection
- Capacitor bank protection
- Voltage protection
- Load-shedding
- Grid automation
- Petersen coil control
- Auto-synchronization
- Interconnection protection
- Arc flash protection

REJ603 - Feeder protection
- Current protection
- Bay control
- Transformer protection
- Line distance protection
- Line differential protection
- Motor protection
- Generator protection
- Busbar protection
- Capacitor bank protection
- Voltage protection
- Load-shedding
- Grid automation
- Petersen coil control
- Auto-synchronization
- Interconnection protection
- Arc flash protection

REX615 - Feeder protection
- Current protection
- Bay control
- Transformer protection
- Line distance protection
- Line differential protection
- Motor protection
- Generator protection
- Busbar protection
- Capacitor bank protection
- Voltage protection
- Load-shedding
- Grid automation
- Petersen coil control
- Auto-synchronization
- Interconnection protection
- Arc flash protection

CUSTOMER BENEFITS

Compact Design & Installation

<ul> <li>Compact, flexible and simple to handle </li> <li>Press fit mounting arrangement facilitates easy and fast installation </li> <li>Smaller number of variants making it easy to stock</li> </ul>

Configuration & Commissioning

<ul> <li>Fast deployment with easily configurable binary inputs and outputs </li> <li>Preconfigured functionality facilitates easy and fast commissioning </li> </ul>

Protection & Monitoring

<ul> <li>Main protection for overhead lines and cable feeders in solidly earthed, resistance-earthed or isolated networks </li> </ul>

EXPLORE DIGITAL TOOLS & PRODUCT CONFIGURATORS

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The digital platform that offers quick access to ABB protection relay tools, product data, technical documentation, and configuration services, streamlining selection, ordering, and support for Medium Voltage solutions.

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The ABB web portal that connects end users, customers, and partners to product information, configuration tools, training, and expert support, all in one place to simplify collaboration and accelerate projects. It provides a complete end-to-end self-service journey, from design to order placement.

EXPLORE OUR TOOLS

Assignment	Application	Description
Product information	3D eCatalogue	A visual tool that allows you to explore ABB medium-voltage switchgear in immersive 3D, configure solutions visually, and make informed decisions with instant access to technical details and application insights.
Product information	Learning	A digital platform that provides training materials, tutorials, and courses to help you build expertise in ABB products and solutions. Accessible resources support continuous learning, professional development, staying current with the latest innovations, and advancing your professional skills.
Configure a product	MV switchgear configurator	The product tool that enables you to create your single-line diagram (SLD), define switchgear configuration details, and instantly access comprehensive technical documentation, making project design and completion faster and more reliable.
Configure a product	MV devices configurator	The user-friendly online tool for selecting and configuring ABB Medium Voltage devices (circuit breakers, contactors, ...) with ease and accuracy, helping you customize solutions to fit your specific technical needs.
Configure a product	Relays Online	The digital platform that offers quick access to ABB protection relay tools, product data, technical documentation, and configuration services, streamlining selection, ordering, and support for Medium Voltage solutions.
Design network/BIM	DOCweb	The ABB online tool for designing electrical MV-LV networks faster and smarter, with real-time calculations, intelligent product selection, automated compliance checks, and instant generation of complete technical documentation, all in just a few clicks.
Design network/BIM	BIMagic	The design tool that simplifies the creation and management of Building Information Modeling (BIM) objects for ABB medium-voltage switchgear, streamlining project planning, integration, and ensuring compliance with industry standards.

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FREQUENTLY ASKED QUESTIONS

The REF601 is a feeder protection and control relay for secondary distribution. It is designed to protect overhead lines and cable feeders in utility substations and industrial power systems.

The REF601 is ideal for protecting incoming and outgoing feeders in medium-voltage distribution networks, including solidly earthed, resistance-earthed, and isolated systems.

The relay provides core feeder protection functions such as three-stage overcurrent protection, two-stage earth-fault protection, and transformer inrush detection to avoid unwanted tripping during energization.

Yes. In addition to protection, the REF601 integrates control, monitoring, and measurement functions in a single device. It can control a circuit breaker and provides event logs and operational data for improved system visibility.

The REF601 features pre-configured functionality that enables fast commissioning. With only a few application-specific settings required, it simplifies deployment in both new installations and retrofit projects.

Yes. The relay supports standard communication protocols such as Modbus RTU and IEC 60870-5-103, allowing easy integration into substation automation and monitoring systems.

REF601 is a feeder protection and control relay with communication capabilities, designed for applications where auxiliary power is available, and system integration is required. REJ603 is a self-powered feeder protection relay designed for remote or unmanned installations where auxiliary power is not available.

REF601 is designed as an essential feeder protection solution with simple configuration and fast commissioning. For applications requiring greater flexibility, communication, and automation capabilities, ABB offers more advanced protection relays, such as REX615 and REX640.