ABB REF615 Digital Multifunction Relay

The ABB REF615 Digital Multifunction Relay is designed to offer comprehensive protection, measurement, and supervision for utility substations and industrial power systems. This relay, re-engineered to meet the latest technological standards, ensures the protection and reliability of overhead lines and cable feeders in distribution networks. The REF615 adheres to the IEC 61850 standard, making it fully compatible with substation automation devices, enabling seamless communication and interoperability.

Key Features of the ABB REF615 Digital Multifunction Relay

The ABB REF615 is a highly versatile and advanced protection relay, suitable for both primary and backup protection applications. With its multifaceted capabilities, it is ideal for enhancing the stability and security of power systems in industrial and utility sectors.

Product Specifications

Below are the detailed technical specifications for the ABB REF615 Digital Multifunction Relay:

Feature	Specification
Model Number	REF615
Product Type	Digital Multifunction Relay
Protection Functions	– Overcurrent protection (phase and earth) – Distance protection – Differential protection – Breaker failure protection – Thermal overload protection – Autoreclosing and lockout function
Measurement Capabilities	– Three-phase current and voltage measurement – Power, energy, and harmonic monitoring
Communication Protocol	IEC 61850, Modbus RTU, DNP3
Operating Voltage	24-250 V DC
Dimensions (L x W x H)	180 x 180 x 120 mm
Weight	Approx. 2.2 kg
Temperature Range	-25°C to +60°C
Mounting	Panel Mount / Rack Mount
Protection Class	IP54 (Front), IP20 (Back)

Benefits of the ABB REF615

The ABB REF615 offers several important benefits for power distribution systems:

Comprehensive Protection: This relay covers a wide range of protection functions, including overcurrent, differential, and distance protection, ensuring the safety of your system.
Advanced Measurement Capabilities: It measures and monitors three-phase current, voltage, power, energy, and even harmonics, offering deep insights into system performance.
Reliable Communication: The REF615 supports multiple communication protocols, including IEC 61850, Modbus RTU, and DNP3, ensuring easy integration into modern substation automation systems.
Flexible Application: It serves both as primary protection for feeders and as a backup protection solution where redundancy is essential, enhancing system reliability.
Efficient Fault Detection: With built-in autoreclosing and lockout functions, the relay minimizes downtime by quickly identifying and recovering from faults.

Application Areas

The ABB REF615 Digital Multifunction Relay is ideal for use in:

Utility Substations: Provides essential protection for overhead lines, cable feeders, and other critical assets in power distribution systems.
Industrial Power Systems: Safeguards industrial power networks, ensuring stable and efficient power distribution.
Substation Automation: Fully supports IEC 61850 for communication and integration, enabling advanced substation automation.
Redundant Protection Systems: Acts as a backup protection solution, particularly in systems requiring redundancy for added security and reliability.

Manufacturer

The ABB REF615 is manufactured by ABB, a world leader in industrial automation and electrical systems. ABB is known for developing innovative and reliable solutions to enhance operational efficiency and system safety across various industries worldwide.