ABB REM615E_D Motor Protection Relay

Technical Overview

The ABB REM615E_D is a specialized Intelligent Electronic Device (IED) engineered for the comprehensive protection, control, and supervision of asynchronous motors within the manufacturing and process industries. As a key member of the Relion® 615 series, this relay integrates multiple functional layers—protection, monitoring, and control—into a single compact unit. 

Detailed Technical Specifications

The REM615E_D is defined by the following industrial-grade performance parameters:

• Primary Application: Dedicated protection for asynchronous motors in utility and industrial distribution.

• Protection Suite:

• Thermal Overload: Sophisticated modeling of motor heating/cooling.

• Startup Supervision: Monitoring of motor start-up time and current.

• Mechanical Protection: Load jam and loss of load (underload) supervision.

• Phase Protection: Phase-reversal and phase-unbalance detection.

• Voltage & Frequency: Integrated voltage- and frequency-based protection and measurement.

• Network Redundancy: Native support for HSR (High-availability Seamless Redundancy) and PRP (Parallel Redundancy Protocol).

• Digital Communication:

• Protocols: IEC 61850 Editions 1 & 2, Modbus, DNP3, and IEC 60870-5-103.

• Advanced Messaging: GOOSE messaging and IEC 61850-9-2 LE (Sampled Values).

• Time Sync: IEEE 1588 V2 for high-accuracy substation-level synchronization.

• Safety Features: Optional integrated arc flash protection with high-speed outputs.

• Human-Machine Interface: Large graphical display for customizable Single Line Diagrams (SLDs); web-browser HMI access.

• Physical Design: Withdrawable plug-in unit for zero-disturbance maintenance and testing.

Advanced Protection and Operational Efficiency

The REM615E_D stands out for its "ready-made" standard configurations, which allow for rapid deployment in standard industrial setups while maintaining the flexibility for custom logic tailoring. Its ability to interface with both traditional instrument transformers (CT/PT) and modern sensors makes it an ideal choice for both legacy retrofits and greenfield "Digital Substation" projects. By utilizing the withdrawable plug-in design, plant operators can perform routine testing or relay replacement without disconnecting field wiring, significantly reducing Mean Time to Repair (MTTR) and operational risks.