ABB RED615E-1G Protection Relay

ABB RED615E-1G Protection Relay (Relion Series)

 

 

The ABB RED615E-1G is a feeder protection and control relay from ABB’s Relion® 615 series, designed for distribution network protection, automation, and monitoring in medium-voltage power systems.

It is commonly used in substations, industrial power distribution, and utility feeder systems.

Key Specifications

• Model: RED615E-1G
• Brand: ABB
• Series: Relion 615
• Product Type: Feeder Protection Relay
• Application:
  • Overhead lines
  • Cable feeders
  • Ring / radial distribution networks
• Rated Supply:
  • 24–60 V DC or 100–240 V AC/DC (variant dependent)
• Inputs:
  • Current inputs (CT)
  • Voltage inputs (VT optional depending configuration)
• Communication:
  • IEC 61850 (substation automation)
  • Modbus
  • DNP3 / IEC 60870-5-103 (optional variants)

Main Protection Functions

The RED615 provides comprehensive feeder protection:

• Overcurrent protection (50/51)
• Directional overcurrent protection
• Earth fault protection
• Voltage protection (undervoltage / overvoltage)
• Frequency protection
• Power monitoring and measurement
• Auto-reclosing (optional)
• Fault location and event recording
• Circuit breaker condition monitoring

Features & Advantages

• High-speed digital protection for distribution feeders
• Supports IEC 61850 digital substation communication
• Advanced fault detection and discrimination
• Integrated control of circuit breakers
• Event logging and disturbance recording (waveforms)
• Cyber-secure Relion platform design
• Configurable I/O depending on variant (BI/BO, RTD options)

System Role (Simple Explanation)

Power system structure:

Grid / Transformer
↓
Feeder line (cables / overhead)
↓
ABB RED615 Relay
↓
Circuit breaker trip signal
↓
Load isolation / protection action

So it:

• Protects feeder lines from faults
• Trips breakers during short circuit or overload
• Monitors power quality and system health

Applications

• Utility distribution substations
• Industrial power distribution systems
• Renewable energy grid connections
• Cable and overhead feeder protection
• Ring main unit (RMU) systems
• Medium voltage switchgear panels