ABB REX615 Protection and Control Relay Products

ABB REX615 Protection and Control Relay Products

Product positioning and core values

REX615 is ABB Relion ®  The new generation of protection and control relays in the series integrates the advantages of the 615 and 620 series, supporting integrated protection for power generation and distribution scenarios. Its core values include:

Flexibility and modularity: Adapt to utility and industrial scenarios through freely configurable hardware (standard/wide size) and 12+2 application packages (such as feeder protection, transformer protection, motor protection, etc.).

Reliability Upgrade: Inheriting mature technology from the 615/620 series, with over 1 million installations worldwide, supporting IEC, ANSI, and CN standards.

Digitization and Interoperability: Based on the IEC 61850 standard, it supports digital switchgear, unconventional instrument transformers, and adapts to the digital transformation of the power grid.

Hardware Design and Features

Modular architecture

Two sizes: standard size (compatible with 615 series) and wide size (compatible with 620 series), with the wide size supporting more I/O and measurement channels.

Detachable plugin: supports hot plugging, mechanical coding error prevention, and short maintenance time (MTTR).

Compatibility design: Supports Rogowski current sensors and voltage dividers, compatible with IEC 61869 standard, current/voltage accuracy level 0.5.

Hardware configuration

Input/Output: Standard size supports 0-7 CTs, 0-18 BIs; Wide size supports 0-8 CTs and 0-32 BIs, with optional IEC/ANSI wiring options.

Communication module: Redundant Ethernet, IEC 61850-9-2 LE, IEEE 1588 time synchronization, supporting PRP/HSR redundancy.

Core functions and application packages

Protection function extension

Ground fault protection: Multi frequency admittance (MFA), contact voltage protection, adapted compensation/isolation network.

Differential protection: differential protection for lines, transformers, and motors, supporting high impedance and flux balance principles.

Voltage/frequency protection: overvoltage/undervoltage, frequency protection (81), supports load shedding and synchronous inspection.

application package

Basic package (APP1): includes basic protection functions such as overcurrent and ground fault.

Expansion package: such as APP3 (feeder protection extension), APP10 (transformer protection), APP9 (machine protection+synchronous motor additional package), etc., supporting flexible combinations.

Digitization and Network Security

Communication capability

Supports IEC 61850-8-1 GOOSE, -9-2 LE SMV, can send/receive sampling values, compatible with process bus.

Supports Modbus, DNP3, IEC 60870-5-104, dual IP addresses, and redundant communication.

network security

Strengthen software configuration, role-based access control, encrypted communication, denial of service protection, in compliance with IEC 62351 standard.

Application scenarios

Power system: feeder protection, transformer protection, busbar protection, capacitor bank protection.

Industrial field: motor protection, generator protection, arc protection.

Renewable energy: The interconnection protection package supports distributed generation access and meets grid standards.

Lifecycle and Services

Replacement and Upgrade

Compatible with 615/620 series hardware, supports SPACOM relay modification, and provides dedicated connector kits.

Modular design allows for on-site addition/replacement of modules or application packages without the need for complete machine replacement.

Service and Support

Full lifecycle services: training, maintenance, modernization upgrades, and firmware updates managed through the ABB Relays Online platform.

Sustainable Design: Environmental Declaration, Recyclable Scrap, Reducing Carbon Footprint.

Ordering and Configuration

Order code: main code+option code (such as hardware module, application package, accessories), supporting visual configuration of ABB Relays Online platform.

Flexible modification: supports adding application packages or hardware modules in the later stage, such as adding BIO testers, communication modules, etc.

Summarize

REX615 provides high reliability and scalable protection solutions for medium voltage power systems through modular hardware, rich application packages, and digital capabilities, suitable for various scenarios from traditional distribution to renewable energy access,