Overview

The ABB RED615 is a compact, phase-segregated, two-end line differential protection relay.
It is designed to protect and control radial, looped, and meshed distribution networks, with or without distributed generation.
The relay integrates protection, control, monitoring, and measurement into a single device, making it a versatile solution for modern substations.

It communicates between substations via fiber-optic links or galvanic pilot wire connections, ensuring fast and secure data exchange for differential protection schemes.

Technical Data

Key Features

• Line differential protection for two-end feeders.

• Integrated control and measurement in one relay.

• IEC 61850 communication for digital substations.

• Event logging and disturbance recording for fault analysis.

• Condition monitoring with self-diagnostics.

• Compact design for easy installation in substations.

Typical Applications

• Utility power distribution networks (radial, looped, meshed).

• Industrial power systems requiring reliable feeder protection.

• Substations with distributed generation (renewables, cogeneration).

• Lines with in-zone transformers needing differential protection.

FAQ

Q1: What is the primary function of the ABB RED615?
A1: It provides line differential protection, control, and measurement for feeders in power distribution networks.

Q2: How does it communicate between substations?
A2: Via fiber-optic links or galvanic pilot wires, ensuring secure and fast data transfer.

Q3: What standards does it comply with?
A3: It complies with IEC 61850 and other international protection relay standards.

Q4: Can it record disturbances and events?
A4: Yes, it includes a disturbance recorder, event log, and fault record functions.

Q5: Where is it typically used?
A5: In utility substations, industrial feeders, and networks with distributed generation.