Description

The ABB RET615E-1G is a high-performance,multifunction feeder protection and control relay from ABB’s SIPROTEC 5 family,designed for reliable operation in medium-voltage(MV)distribution networks up to 36 kV.It provides comprehensive protection—including phase overcurrent,earth fault,thermal overload,breaker failure,and automatic reclosing—while integrating advanced automation,metering,and communication capabilities.

Built on a secure,scalable platform compliant with IEC 61850 Edition 2,the RET615E-1G supports modern smart grid requirements such as peer-to-peer GOOSE messaging,time-synchronized event reporting,and seamless integration with utility SCADA and substation automation systems.

Application Scenarios

At a municipal utility in Scandinavia upgrading its aging 20 kV urban feeders,engineers replaced electromechanical relays with the ABB RET615E-1G to enable faster fault isolation and self-healing grid functionality.During a winter storm,a tree-induced single-line-to-ground fault occurred on a critical hospital feeder.The RET615E-1G detected the fault within 20 ms,executed a single-shot reclose after 0.5 seconds(per utility policy),and restored power before backup generators activated.Its embedded IEC 61850 GOOSE logic also signaled adjacent feeders to adjust load sharing—preventing cascading outages.Post-event,operators used the 1-second pre-fault/10-second post-fault disturbance recorder data to validate system performance without dispatching field crews.

Parameter

Main Parameters Value/Description

Product Model ABB RET615E-1G

Manufacturer ABB Ltd.

Product Family SIPROTEC 5

Primary Function Feeder Protection,Control,Monitoring&Automation

Voltage Class Up to 36 kV(MV distribution)

Current Inputs 3x Phase(1/5 A),1x Residual or 3I₀(for earth fault)

Protection Functions 50/51(IOC/TOC),50N/51N(Ground),79(Recloser),49(Thermal),50BF(Breaker Failure),27/59(Under/Overvoltage)

Communication 2x Ethernet(IEC 61850 Ed.2,Modbus TCP,DNP3),RS-485(Modbus RTU),optional fiber(IEEE C37.94)

Redundancy Protocols PRP,HSR,RSTP(for substation network resilience)

Cyber Security Role-based access,audit trail,IEC 62351 support,secure firmware update

Display&HMI Graphical LCD with keypad,real-time phasors,event viewer

Operating Temperature-25°C to+55°C

Certifications IEC 60255,UL 508,CSA,CE,IEEE C37.90,IEC 61000-4(EMC)

Mounting Flush or surface mount in switchgear panels(standard 1/3 rack width)

Technical Principles and Innovative Values

Innovation Point 1:True IEC 61850 Edition 2 Native Architecture–The RET615E-1G implements SCL configuration,GOOSE,and Sampled Values(SV)at the hardware level,enabling sub-millisecond peer-to-peer tripping without external merging units—ideal for ring-main unit automation.

Innovation Point 2:Adaptive Reclosing Logic–Goes beyond fixed-time reclose:it can inhibit reclosing based on fault current magnitude,successive fault detection,or external signals(e.g.,from fire alarm systems),enhancing safety in sensitive areas.

Innovation Point 3:Embedded Power Quality&Metering–Provides Class 0.5S energy metering,THD monitoring,and 15-day trend logging—turning protection hardware into a dual-purpose asset for billing and diagnostics.

Innovation Point 4:Lifecycle Cyber Resilience–Features secure boot,encrypted configuration backups,and remote firmware signing—ensuring compliance with NERC CIP,ENTSO-E,and EU NIS2 directives.

Application Cases and Industry Value

In a mining operation in Chile,the ABB RET615E-1G was deployed on 13.8 kV conveyor feeders subject to frequent rockfall-induced cable damage.Using its sensitive earth fault(SEF)function with 0.1%pickup,it detected high-impedance faults that legacy relays missed.Combined with automatic sectionalizing via GOOSE to upstream breakers,downtime per incident dropped from 45 minutes to under 3 minutes.Annual production loss due to electrical faults decreased by$2.3M.

Another implementation in a German renewable microgrid used the RET615E-1G’s synchrophasor(IEEE C37.118)output to provide real-time grid stability data to a central controller,enabling dynamic islanding during main grid disturbances—critical for maintaining hospital and data center uptime.

Related Product Combination Solutions

ABB REF615E:Transformer/bay protection relay–complements RET615E-1G in radial or ring networks.

ABB PCM600:Engineering tool–configures,tests,and maintains RET615E-1G via IEC 61850 SCL files.

ABB Ability™Electrical Distribution Control System:Cloud-connected SCADA platform that ingests RET615E-1G alarms,metering,and event data.

ABB Emax 2 Circuit Breakers:Intelligent breakers with direct communication to RET615E-1G for coordinated tripping.

ABB RED615:Line differential protection–pairs with RET615E-1G for critical feeders requiring ultra-fast fault clearance.

Siemens SICAM PAS:Third-party SCADA–integrates via IEC 61850 MMS or DNP3 using RET615E-1G’s multi-protocol gateway.

ABB Fiber-Optic Modules(e.g.,FXC510):Enables IEEE C37.94 serial fiber links for noise-immune communication in HV environments.

ABB MicroSCADA SYS600:Legacy but widely used SCADA–fully supported via DNP3 or Modbus mapping from RET615E-1G.

Installation,Maintenance,and Full-Cycle Support

Installation of the ABB RET615E-1G follows standard SIPROTEC practices:mount in a 19″panel or switchgear cubicle,connect CTs/VTs to labeled terminals,and link to the substation LAN via dual Ethernet ports.Configuration is performed offline in PCM600 using standardized IEC 61850 templates,then uploaded securely.No dip switches or potentiometers—full digital setup ensures repeatability.

Maintenance leverages self-diagnostics(LED status,internal test logs)and remote access.Technicians can perform secondary injection tests via PCM600 or use the front USB port for local updates.The relay’s modular design allows firmware upgrades without recalibration.

As an authorized ABB partner,we supply only genuine ABB RET615E-1G units with full factory test reports,IEC 61850 SCL schema files,and global warranty coverage.Each unit is validated for communication stack integrity,protection timing accuracy,and cybersecurity baseline compliance.We offer commissioning support,training,and lifecycle management—including obsolescence planning for legacy REL6xx systems.

Contact us for a customized solution—whether you’re building a new smart substation,modernizing urban distribution feeders,or enhancing grid resilience for critical infrastructure.