ABB REF615C-E HCFFAEAGABC2BAA11E｜Feeder Protection and Control Relay｜

REF615C

The standard configuration is designed primarily for non-directional overcurrent protection and non-directional earth-fault protection in:

Cable feeders
Overhead transmission/distribution line feeders
Directly earthed distribution networks
Resistance-earthed distribution networks

This configuration is typically applied in medium-voltage distribution systems where fault direction determination is not required because the network grounding method and protection philosophy allow simple current-based fault detection.

Factory Default Delivery

An IED with this standard configuration is supplied from the manufacturer with:

Predefined protection functions enabled
Default parameter values
Factory-configured signal connections
Standard logic schemes

These default settings provide a ready-to-use protection solution for common feeder applications while allowing further engineering customization.

Configuration Flexibility

Although the IED is delivered with a standard setup, users can modify the internal configuration according to project-specific requirements.

Using PCM600 (Protection and Control IED Manager), engineers can customize:

Incoming signals
CT/VT measurement inputs
Binary inputs from field devices
External protection signals
Outgoing signals
Trip commands
Alarm outputs
Indications
Communication signals
Internal signal mapping
Protection function outputs
Logic interlocking
Control sequences
Event and disturbance recording triggers
Typical Adaptation Examples

The standard configuration can be modified to support different primary system arrangements, such as:

Application Requirement Possible Modification
Different feeder breaker arrangements Modify trip logic and interlocking
Additional alarm requirements Assign protection signals to LEDs and outputs
Customized SCADA integration Map signals to communication channels
Additional blocking/interlocking Add logic functions in PCM600
Different CT/VT connection schemes Adjust measurement and protection parameters
Engineering Significance

The standard configuration provides a balance between fast commissioning and application flexibility:

Reduces engineering effort by providing a pre-engineered protection template
Allows adaptation without changing hardware
Supports different feeder layouts through software configuration
Enables integration into various substation automation systems

In practice, this type of configuration is commonly used for ABB feeder protection IEDs such as the REF series feeder terminals, where PCM600 is used for final application engineering, signal routing, and parameterization before commissioning.