Numerical Relay ABB

Feeder protection and control ABB REF601 numerical relay Entry-level numerical relay for distribution networks REF601 is a dedicated feeder protection and control relay intended for the protection and control of utility and industrial power systems in primary and secondary distribution networks. The relay provides an optimized composition of protection, monitoring and control functionality in one unit, with the best performance and usability in its class. Besides the conventional current transformer interface based variant, the relay also supports a variant based on Rogowski current sensors analog interface. This helps to obtain a compact medium voltage switchgear equipment size reduction with improved performance and standardization.

Scope

Main protection for overhead lines and cable feeders in solidly earthed, resistance-earthed or isolated networks Inrush current stabilization function for distribution transformers

Product benefits

• Compact, flexible and simple to handle
• Speedy commissioning through selective test function for protection functions, binary signals and communication features
• Easily configurable binary inputs and outputs
• Extensive self-supervision of the relay hardware and software
• Enhanced safety with usage of sensors variant / detachable terminals with CT shorting facility
• Press fit mounting arrangement facilitates easy and fast installation

Product features

• Overcurrent, earth-fault, phase-discontinuity, negative-phase sequence and thermal-overload protections, inrush current detection, circuit-breaker control, reclosing and measurement
• Preconfigured functionality facilitates easy and fast commissioning
• Universal power supply 24-265 V AC/DC
• Configurable binary inputs/outputs using local HMI or communication interface
• Specific variant with site selectable CT selection (1 or 5A), Boolean logic and timers
• Site selectable Modbus and IEC 60870-5-103 protocols

ABB Numerical relays

ABB Numerical relays are based on the use of microprocessors. A big difference between conventional electromechanical and static relays is how the relays are wired. Electromechanical and static relays have fixed wiring and the setting is manual. Numeric relays, on the other hand, are programmable relays where the characteristics and behavior can be programmed. Most numerical relays are also multifunctional.

Scope

• Modern protection relays
• Multifunctional protection

Product benefits

• Provide continuity of power to consuments
• Protection of network assets
• Protection against life-threatening electrical incidents

Product features

• Self-checking facility
• Low burden relays improve accuracy
• Fast fiber optical communication with substation LAN
• Adaptive relaying schemes
• Permit storage of historical data
• Time stamping

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REM601 is a dedicated motor relay designed for the protection and control of medium-voltage and low-voltage asynchronous motors in the manufacturing and process industry. The relay provides an optimized composition of protection, monitoring and control functionality in one unit, with the best performance usability in its class.

The relay’s stand­ard signal configuration can be altered from its local user interface (LHMI). The relay can be used with both circuit-breaker and contactor-controlled motor drives.

Besides the conventional current transformer interface based variant, the relay also supports a variant based on Rogowski current sensors’ analog interface. This helps to obtain a compact medium voltage switchgear equipment size reduc­tion with improved performance and standardization.

Scope

• Asynchronous motor protection

Product benefits

• Compact and flexible
• Simple to handle and ready to use
• Easily configurable binary inputs and outputs
• Extensive self-supervision of the relay hardware and software
• Facilitates easy and fast commissioning of switchgear
• Enhanced safety with usage of sensors variant 

Product features

• Used for three-phase motors with conventional contactor or circuit-breaker controlled motor drives
• Thermal overload, short circuit, start-up supervision, negative-phase sequence, loss of phase, locked rotor during running, sensitive earth fault, loss of load and circuit breaker failure protections
• Circuit breaker control
• Preconfigured configuration
• Configurable binary inputs/outputs using LHMI or communication interface
• Supports site-selectable Modbus RTU and IEC 60870-5-103 communication protocols 

Feeder protection REF611
REF611 is a dedicated feeder protection relay designed for the protection, control, measurement and supervision of utility substations and industrial power systems.
The feeder protection relay REF611 can be supplied either with directional or non-directional overcurrent and earth-fault protection. Directional earth-fault protection is mainly used in isolated neutral or compensated networks, whereas the non-directional earth fault protection is intended for directly or low-impedance earthed neutral networks.

Scope

Feeder protection relay
Product benefits

Pre-configured functions for feeder protection application
The relays are delivered pre-configured and factory-tested to shorten engineering and commissioning time
Self-healing communication based on HSR/PRP using an optional second Ethernet bus
The compact design makes it suitable for both new and retrofit installations
Withdrawable plug-in unit design for swift installation and testing
Product features

• Directional or non-directional overcurrent and earth-fault protection for feeders
• Powerful and user-friendly web-browser-based human machine interface (HMI) including input/output (I/O) matrix with visual selections
• Application-specific standard configurations resulting in a shorter relay setup and commissioning time
• Supports IEC 61850 Editions 1 and 2, including binary GOOSE messaging
• Pre-configured solutions for utility distribution and industrial applications

Feeder protection and control REF620 IEC
Compact protection and control for a wide variety of feeder applications
REF620 is a dedicated feeder management relay for protection, control, measurement and supervision in utility and industrial power distribution systems, including radial, looped and meshed networks, with or without distributed power generation.

Compact and versatile feeder protection relay solution with integration of protection, control, monitoring and supervision in one relay.

Scope
Protection for medium voltage substation incoming and outgoing feeders
Key benefits

Extensive protection and control functionality, either with sensors or conventional instrument transformers
Functional scalability and extensive possibilities to easily tailor configurations to application-specific requirements
Withdrawable plug-in unit design for swift installation and testing
Large graphical display for showing customizable SLDs, accessible either locally or through an easy-to-use web-browser-based HMI
Extensive life-cycle services
Key features

• Wide range of protection and control functionality for incoming and outgoing feeders
• Extensive earth-fault protection portfolio with unique multifrequency admittance-based protection for higher sensitivity and selectivity
• Several optional functionality packages – advanced and fast fault location of short circuits and earth faults, interconnection protection for distributed power generation, capacitor bank, basic motor and arc protection
• Supports native IEC 61850 Editions 1 and 2, including redundancy HSR and PRP, GOOSE messaging and IEC 61850-9-2 LE for less wiring and supervised communication
• Supports Modbus, DNP3 and IEC 60870-5-103 communication protocols and for different time synchronization methods, including high-accuracy time synchronization via IEEE 1588 V2 Precision Time Protocol

REU615 is a voltage protection and control relay for voltage and frequency-based protection in utility and industrial power distribution systems, including networks with distributed power generation. REU615 is also ideal for voltage regulation.

Scope

• Voltage and frequency protection as well as automatic voltage regulation of power transformers with a motor-driven on-load tap changer

Product features

• Exclusively designed for automatic and manual voltage regulation, or alternatively for busbar under voltage and overvoltage supervision, load shedding and restoration
• Ready-made standard configurations for fast and easy setup with tailoring capabilities
• Withdrawable plug-in unit for swift installation and testing
• Large graphical display showing customizable SLDs, accessible either locally or through an easy-to-use web-browser-based HMI
• Extensive life-cycle services

Product benefits

• Extensive range of protection and control functionality for busbar voltage supervision, load shedding and restoration, including over frequency and under frequency protection for power generators and other AC equipment
• Automatic voltage regulation of power transformers with a motor-driven on-load tap changer
• Optional arc protection and high-speed outputs (not with automatic voltage regulator)
• Supports IEC 61850 Editions 1 and 2, including HSR and PRP, GOOSE messaging and IEC 61850-9-2 LE for less wiring and supervised communication
• IEEE 1588 V2 for high-accuracy time synchronization and maximum benefit of substation-level Ethernet communication
• Supports Modbus, DNP3 and IEC 60870-5-103 communication protocols

Typically, this protection relay is used with circuit breaker or contactor-controlled medium- and small-sized motors in a variety of drives, such as pumps and conveyors, crushers and choppers, mixers and agitators, fans and aerators.

Scope

• Motor protection relay

Product benefits

• Preconfigured functions for motor protection application
• The relays are delivered preconfigured and factory-tested to shorten engineering and commissioning time
• Self-healing communication based on HSR/PRP using an optional second Ethernet bus
• The compact design makes it suitable for both new and retrofit installations
• Withdrawable plug-in unit design for swift installation and testing

Product features

• Motor protection and control for a variety of drives
• Powerful and user-friendly web-browser-based human machine interface (HMI) including input/output (I/O) matrix with visual selections
• Application-specific standard configurations resulting in a shorter relay setup and commissioning time
• Supports IEC 61850 Editions 1 and 2, including binary GOOSE messaging
• Preconfigured solutions for utility distribution and industrial applications