ABB REF615｜Feeder Protection and Control｜

The ABB REF615 is a dedicated feeder protection and control Intelligent Electronic Device (IED) designed for the protection, control, measurement, and supervision of:

Utility distribution substations
Industrial power distribution systems
Medium-voltage overhead line feeders
Cable feeder applications

The REF615 supports a wide range of network configurations, including:

Radial distribution networks
Looped distribution networks
Meshed distribution networks
Networks with or without distributed power generation

REF615 belongs to ABB’s Relion® protection and control product family and is part of the ABB 615 series IED platform.

The 615 series features:

Compact physical design
Withdrawable-unit construction
Modular hardware architecture
Advanced IEC 61850-based communication capabilities

The series was engineered specifically to maximize the interoperability, flexibility, and automation capabilities enabled by the IEC 61850 substation communication standard.

Protection and Application Functions
Primary Feeder Protection

REF615 provides comprehensive main protection for:

Overhead line feeders
Underground cable feeders
Medium-voltage distribution networks

The IED can also be applied as:

Backup protection
Redundant protection system component
Independent protection device in critical power applications

Depending on the selected standard configuration, REF615 can be adapted for different neutral grounding systems:

Network Type Application Capability
Isolated neutral networks Supported
Resistance-earthed networks Supported
Compensated networks Supported
Solidly earthed networks Supported

After application-specific parameter configuration, a standard configuration REF615 can be directly commissioned into service.