ABB REU610 Voltage Protection Relay for Relion 610 Series Distribution Systems
ABB REU610 Voltage Protection Relay for Relion 610 Series Distribution Systems
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Brand:ABB PLC Item No.:ABB REU610 Product Origin:Sweden Product Dimensions:96 × 137 × 169 mm Product Weight:1.2 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 REU610 Voltage Protection Relay is a compact numerical relay designed for voltage protection, measurement, and supervision in medium-voltage distribution systems. It is part of the ABB Relion 610 Series, a family of protection relays developed for distribution substations and industrial power networks.
The REU610 provides reliable overvoltage and undervoltage protection, helping prevent damage to critical power system components such as busbars, feeders, transformers, motors, and capacitor banks. It continuously monitors system voltage and initiates protective actions when abnormal voltage conditions occur.
Designed with a plug-in modular construction, the relay simplifies installation and maintenance in switchgear panels. The compact design makes it suitable for retrofit projects and substations where space is limited.
With support for modern communication protocols and integration with substation automation systems, the REU610 is widely used in utility distribution networks, industrial facilities, and offshore power systems.
Technical Specifications
Parameter
Specification
Product Model
REU610
Manufacturer
ABB
Product Type
Numerical Voltage Protection Relay
Series
Relion 610 Series
Rated Voltage
100 / 110 / 115 / 120 V
Rated System Frequency
50 / 60 Hz
Auxiliary Power Supply
24–265 V AC/DC
Protection Functions
Overvoltage, undervoltage, residual voltage protection
Digital Inputs
Up to 3 configurable inputs
Output Contacts
Multiple trip and signal outputs
Power Consumption
Approx. 8 W / 10 VA
Communication Protocols
IEC 61850, Modbus, DNP3, Profibus, SPA
Operating Temperature
−25°C to +55°C
Dimensions (W × H × D)
Approx. 96 × 137 × 169 mm
Weight
Approx. 1.2 kg
Specifications may vary depending on configuration and hardware options.
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Applications
The ABB REU610 relay is designed for voltage monitoring and protection in medium-voltage distribution networks and industrial power systems.
Typical applications include:
Busbar overvoltage and undervoltage protection
Feeder and power transformer overvoltage protection
Motor undervoltage protection
Capacitor bank protection and supervision
Automatic busbar changeover schemes
Voltage monitoring in distribution substations
The relay can also be used for earth-fault supervision in isolated neutral systems and for disconnecting small generation units during major network disturbances.
Advantages
Reliable Voltage Protection
Provides precise overvoltage and undervoltage detection to protect electrical equipment from abnormal voltage conditions.
Compact Plug-In Design
The plug-in relay construction simplifies commissioning and maintenance in switchgear panels.
Flexible Communication Integration
Supports multiple communication protocols for integration with modern substation automation and SCADA systems.
Comprehensive Voltage Monitoring
Measures phase-to-phase and residual voltage to monitor power system stability.
High Reliability for Utility Applications
Certified and tested for use in utility distribution networks and industrial power systems.
Suitable for Retrofit Projects
Compact size and modular design allow easy replacement of older protection relays.
Technical FAQs
1. What is the main function of the ABB REU610 relay?
It provides voltage protection and monitoring for power distribution systems.
2. Which product series does the REU610 belong to?
It belongs to the ABB Relion 610 series.
3. What types of protection does the relay provide?
It provides overvoltage, undervoltage, and residual voltage protection.
4. What equipment can the REU610 protect?
Busbars, feeders, transformers, motors, and capacitor banks.
5. Does the REU610 support communication protocols?
Yes, it supports IEC 61850, Modbus, DNP3, and other protocols.
6. What voltage inputs does the relay support?
Typical rated voltage inputs are 100–120 V.
7. What is the operating temperature range?
The typical operating range is −25°C to +55°C.
8. Can the relay monitor residual voltage?
Yes, it can measure residual voltage for earth-fault supervision.
9. Is the REU610 suitable for industrial power systems?
Yes, it is widely used in both utility and industrial electrical networks.
10. Why choose the ABB REU610 relay?
Because it offers reliable voltage protection, flexible integration, and compact installation for distribution substations.
