REU615 HBUAEAADANB6ANN1XG Secondary Substation Automation & Protection Relay

Description

REU615 HBUAEAADANB6ANN1XG 

The ABB REU615 HBUAEAADANB6ANN1XG is a compact numerical relay belonging to ABB’s Relion® product family, specifically designed for automation, protection, and control of medium-voltage secondary substations and feeder circuits. As a key component in modern distribution automation, it combines multiple functions—including overcurrent protection, earth fault detection, and remote control capabilities—into a single device, eliminating the need for separate protection relays and control units in space-constrained environments.

REU615 HBUAEAADANB6ANN1XG 

This relay integrates smoothly into both traditional and digital substation architectures, supporting legacy communication protocols alongside modern IEC 61850 standards for interoperability with other intelligent electronic devices (IEDs). Its flexible configuration allows adaptation to various applications, from radial feeders and ring mains to transformer feeders in secondary substations. What makes the ABB REU615 HBUAEAADANB6ANN1XG particularly valuable is its balance of advanced functionality and compact design, making it ideal for installations where cabinet space is limited but protection performance cannot be compromised.

REU615 HBUAEAADANB6ANN1XG 

Main features and advantages:

The ABB REU615 HBUAEAADANB6ANN1XG delivers reliable protection and control performance through a high-performance processor that executes protection algorithms in under 20 milliseconds, ensuring rapid fault detection and isolation. It features a comprehensive set of protection functions including inverse time overcurrent protection, instantaneous overcurrent protection, earth fault protection with directional capabilities, and thermal overload protection—critical for safeguarding medium-voltage equipment and distribution lines.
Hardware design highlights include a rugged, compact enclosure that operates reliably in temperatures ranging from -25 °C to +70° C, making it suitable for harsh industrial and outdoor cabinet environments. The relay offers flexible communication options including Ethernet and RS485 ports, supporting protocols such as IEC 61850, Modbus RTU/TCP, and DNP3.0 for seamless integration with substation automation systems. Its low power consumption and efficient heat dissipation design allow for Intensive installation in control cabinets without additional cooling requirements

REU615 HBUAEAADANB6ANN1XG 

Application areas:

In medium-voltage distribution networks, industrial secondary substations, and commercial power supply systems, reliable automation and protection of electrical assets are essential to maintain power quality and minimize downtime. These environments require compact, multifunctional devices that can manage feeder circuits, monitor electrical parameters, and provide rapid fault isolation—all while integrating seamlessly with existing substation infrastructure. Whether controlling power distribution in manufacturing plants, protecting critical circuits in data centers, or managing residential feeder networks, engineers need solutions that combine protection, control, and communication capabilities in a space-efficient design.

This is where the ABB REU615 HBUAEAADANB6ANN1XG excels, serving as a versatile automation and protection relay for secondary substation applications across diverse industries. In urban distribution networks, it monitors and protects medium-voltage feeders, enabling quick fault location and isolation to reduce customer outages. In industrial facilities, it coordinates with main distribution boards to prevent overloads and ensure safe operation of production equipment. Used in power system automation for years, the ABB REU615 HBUAEAADANB6ANN1XG has proven its reliability in applications requiring precise control, comprehensive protection functions, and seamless integration with SCADA systems, making it a trusted choice for utilities and industrial operators worldwide.

REU615 HBUAEAADANB6ANN1XG 

Related products:

ABB RET650 – Line protection relay that complements the ABB REU615 HBUAEAADANB6ANN1XG in primary distribution substation applications.

ABB REF615 – Feeder protection relay often deployed alongside the ABB REU615 HBUAEAADANB6ANN1XG in complex distribution networks.

ABB REX640 – Auxiliary relay that enhances the ABB REU615 HBUAEAADANB6ANN1XG’s control logic for breaker interlocking.

ABB PSE600 – Redundant power supply unit providing stable voltage to the ABB REU615 HBUAEAADANB6ANN1XG and associated devices.

ABB HMI60.1 – Local operator panel that displays real-time data from the ABB REU615 HBUAEAADANB6ANN1XG for on-site monitoring.

ABB SPACOM S200 – Communication gateway enabling the ABB REU615 HBUAEAADANB6ANN1XG to connect with legacy SCADA systems.

ABB TCM800 – Condition monitoring unit that integrates with the ABB REU615 HBUAEAADANB6ANN1XG for transformer health data collection.

ABB CMU800 – Circuit breaker monitoring module that works with the ABB REU615 HBUAEAADANB6ANN1XG to provide breaker performance analytics.

Installation and maintenance:

Before installing the ABB REU615 HBUAEAADANB6ANN1XG, ensure the mounting rail is securely fastened in the control cabinet with sufficient clearance—at least 50mm above and below the device—to facilitate proper heat dissipation and wiring access. Verify that current transformer (CT) ratios and connection polarities match the relay’s configuration settings to ensure accurate current measurement and protection operation. The device should be connected to a dedicated, clean power supply to minimize electrical noise, with proper grounding according to local electrical codes using a 4mm² conductor.

For maintenance, perform quarterly checks using ABB’s PCM600 software to verify protection settings, review event logs, and confirm communication integrity. Conduct visual inspections every six months to check for loose connections, particularly at terminal blocks and communication ports. Schedule firmware updates during planned maintenance windows, ensuring a complete backup of configuration files is stored before initiating the update process. The ABB REU615 HBUAEAADANB6ANN1XG includes built-in self-diagnostic features that continuously monitor device health, providing early warning of potential issues through status indicators and alarm outputs.

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