ABB REU615C_D Voltage and Frequency Protection Relay for Relion 615 Series Distribution Systems
ABB REU615C_D Voltage and Frequency Protection Relay for Relion 615 Series Distribution Systems
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Brand:ABB PLC Item No.:ABB REU615C_D Product Origin:Sweden Product Dimensions:177 × 177 × 201 mm Product Weight:4.1 kg Payment:T/T, Western Union, Credit Card Goods_stock:15 Shipping Port:Xiamen, China Lead Time:1-3 Days Condition:Brand New And Original Warranty:1 Year Certificate:COO
The ABB REU615C_D Voltage and Frequency Protection Relay is an advanced protection and control device designed for medium-voltage distribution systems and substation automation. It is part of the ABB Relion 615 Series, a family of intelligent protection relays used in modern utility and industrial power networks.
The relay provides reliable voltage-based and frequency-based protection, helping maintain stable power system operation by detecting abnormal voltage conditions such as overvoltage, undervoltage, and frequency deviations. It also supports voltage regulation applications and load-shedding schemes in distribution networks.
The REU615C_D integrates protection, control, measurement, and monitoring functions in a single device, making it suitable for both new substations and retrofit upgrades. With built-in support for modern communication protocols such as IEC 61850, it can be easily integrated into digital substation environments and SCADA systems.
Technical Specifications
Parameter
Specification
Product Model
REU615C_D
Manufacturer
ABB
Product Type
Numerical Voltage and Frequency Protection Relay
Series
Relion 615 Series
Rated System Frequency
50 / 60 Hz
Protection Functions
Overvoltage, undervoltage, frequency protection, loss-of-mains detection
Measurement Functions
Voltage, frequency, active power, reactive power, energy
Communication Interfaces
Ethernet
Communication Protocols
IEC 61850, Modbus, DNP3, SPA, LON
Auxiliary Power Supply
Typically 24–250 V AC/DC (depending on configuration)
Operating Temperature
−25°C to +55°C
Mounting Method
Panel-mounted relay
Dimensions (W × H × D)
Approx. 177 × 177 × 201 mm
Weight
Approx. 4.1 kg
Country of Origin
Sweden
Specifications may vary depending on configuration and order code.
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Applications
The ABB REU615C_D relay is designed for voltage protection, frequency supervision, and control functions in medium-voltage power systems.
Typical applications include:
Medium-voltage distribution switchgear
Transformer voltage regulation systems
Busbar overvoltage and undervoltage protection
Load shedding and restoration schemes
Distributed generation and renewable energy integration
Industrial power distribution networks
Substation automation systems
The relay can also support automatic voltage regulation of transformers with on-load tap changers in distribution networks.
Advantages
Comprehensive Voltage and Frequency Protection
The relay provides multiple protection functions including overvoltage, undervoltage, and frequency supervision to maintain power system stability.
Integrated Protection and Control
Combines protection, monitoring, measurement, and control capabilities within a single device, reducing the need for additional equipment.
Advanced Communication Capabilities
Supports IEC 61850 and other communication protocols for seamless integration with substation automation systems.
Flexible Control and Automation
Allows remote or local switchgear control, programmable logic functions, and interlocking capabilities.
Event and Disturbance Recording
Includes disturbance recorders, event logs, and fault records for detailed system diagnostics and maintenance.
Compact and Modular Design
Panel-mounted construction simplifies installation in both new and retrofit switchgear panels.
Technical FAQs
1. What is the primary function of the ABB REU615C_D relay?
It provides voltage and frequency protection for medium-voltage power distribution systems.
2. Which product family does the REU615C_D belong to?
It belongs to the ABB Relion 615 series.
3. What protection functions are included?
Overvoltage protection, undervoltage protection, frequency protection, and loss-of-mains detection.
4. Does the relay support IEC 61850 communication?
Yes, it supports IEC 61850 along with other protocols like Modbus and DNP3.
5. Where is the REU615C_D typically installed?
It is commonly installed in medium-voltage switchgear, substations, and industrial distribution systems.
6. Can the relay perform power system measurements?
Yes, it can measure voltage, frequency, active power, reactive power, and energy.
7. What temperature range can the relay operate in?
Typically −25°C to +55°C.
8. Is the relay suitable for digital substations?
Yes, it supports modern communication protocols for digital substation integration.
9. What mounting method does the relay use?
It is designed for panel mounting in switchgear cabinets.
10. Why choose the ABB REU615C_D relay?
Because it offers comprehensive voltage protection, flexible communication integration, and reliable operation in modern distribution networks.
