ABB REF615 Feeder Protection and Control Relay

ABB REF615 Feeder Protection and Control Relay Suppliers,Exporters in India

ARP IMPEX supplies and exports ABB REF615 feeder protection and control relays from India for medium-voltage switchgear panels, substations, utilities, EPC projects and industrial power distribution systems. We handle enquiries for new requirements, existing relay replacement, switchgear maintenance and export supply.

The ABB Relion REF615 is mainly used for the protection of overhead lines and cable feeders. It combines feeder protection, circuit-breaker control, current and voltage measurement, fault recording, supervision and substation communication in one relay.

REF615 can be used in radial, ring and meshed distribution networks. Different configurations are available for isolated-neutral, resistance-earthed, compensated and solidly earthed systems. The correct configuration depends on the network earthing method, CT and VT arrangement, directional protection requirement and the functions required in the panel.

For an accurate ABB REF615 relay price and quotation, buyers should share the complete order code. Asking only for “REF615” is not enough because the relay is available with different standard configurations, input modules, power supplies and communication options.

ABB REF615 Models and Standard Configurations

REF615 is not a product family with separate feeder relay model numbers. It is one feeder protection relay available in 12 standard configurations: A, B, C, D, E, F, G, H, J, K, L and N.

ABB REF615 Standard Configuration A

Configuration A is used for feeders requiring:

• Non-directional overcurrent protection
• Directional earth-fault protection
• Thermal overload protection
• Circuit-breaker failure protection
• Phase discontinuity protection
• Inrush current detection
• Optional auto-reclosing
• Optional arc-flash protection

It is commonly selected for outgoing feeders in isolated or compensated networks where directional earth-fault protection is required.

ABB REF615 Standard Configuration B

Configuration B has the main protection functions of Configuration A, along with additional circuit-breaker condition monitoring.

Depending on the ordered hardware, it can also support:

• RTD inputs
• mA inputs
• Additional binary inputs and outputs
• High-speed binary outputs

This version is useful when the customer wants feeder protection and circuit-breaker condition information from the same relay.

ABB REF615 Standard Configuration C

Configuration C provides:

• Non-directional overcurrent protection
• Non-directional earth-fault protection
• Sensitive earth-fault protection
• Thermal overload protection
• Circuit-breaker failure protection
• Phase discontinuity protection
• Optional auto-reclosing
• Optional arc detection

It is generally used in solidly earthed or low-impedance earthed systems where directional earth-fault protection is not required.

ABB REF615 Standard Configuration D

Configuration D combines non-directional overcurrent and earth-fault protection with circuit-breaker condition monitoring.

Compared with Configuration C, this version is available with more binary inputs and outputs and optional RTD-related hardware.

ABB REF615 Standard Configuration E

Configuration E is intended for feeders that require:

• Non-directional overcurrent protection
• Directional earth-fault protection
• Phase-voltage measurement
• Residual-voltage measurement
• Current-circuit supervision
• Fuse-failure supervision
• Circuit-breaker condition monitoring
• Optional RTD and mA inputs

It is suitable for incomers and outgoing feeders where voltage measurement is required but directional overcurrent protection is not necessary.

ABB REF615 Standard Configuration F

Configuration F provides a broader feeder protection arrangement with:

• Directional overcurrent protection
• Directional earth-fault protection
• Overvoltage protection
• Undervoltage protection
• Positive-sequence undervoltage protection
• Negative-sequence overvoltage protection
• Residual overvoltage protection
• Voltage and current measurement
• Circuit-breaker condition monitoring

This version is often considered for incoming feeders, outgoing feeders and industrial distribution systems where power can flow in either direction.

ABB REF615 Standard Configuration G

Configuration G uses sensor-based measurements instead of a fully conventional CT and VT arrangement.

The hardware includes:

• Three combi-sensor inputs for phase-current and phase-voltage measurement
• One conventional residual-current input
• Directional overcurrent protection
• Directional earth-fault protection
• Voltage protection and measurement
• Optional synchronism check
• IEC 61850-9-2 LE sampled-value support

This configuration is associated with compact and digital medium-voltage switchgear using current and voltage sensor technology.

ABB REF615 Standard Configuration H

Configuration H covers:

• Non-directional overcurrent protection
• Non-directional earth-fault protection
• Voltage protection
• Frequency protection
• Synchronism check
• Circuit-breaker condition monitoring
• Voltage, current, power and frequency measurement

It is used in industrial power systems where two networks or sources may need to be connected after checking voltage, frequency and phase conditions.

ABB REF615 Standard Configuration J

Configuration J provides:

• Directional overcurrent protection
• Directional earth-fault protection
• Voltage protection
• Frequency protection
• Synchronism check
• Circuit-breaker condition monitoring
• Optional power-quality functions
• Optional RTD and mA inputs

This configuration suits industrial incomers, captive power systems and feeders connected to networks with possible bidirectional power flow.

ABB REF615 Standard Configuration K

Configuration K has an extensive protection arrangement covering:

• Directional overcurrent protection
• Non-directional overcurrent protection
• Directional earth-fault protection
• Non-directional earth-fault protection
• High-impedance restricted earth-fault protection
• Voltage and frequency protection
• Synchronism check
• Circuit-breaker condition monitoring
• Optional fault location
• Optional power-quality monitoring

It can be used for feeder applications where a transformer is located close to the feeder and restricted earth-fault protection is required.

ABB REF615 Standard Configuration L

Configuration L is a sensor-input version with broad feeder protection and measurement functions.

It covers:

• Directional and non-directional overcurrent protection
• Directional and non-directional earth-fault protection
• Multifrequency neutral-admittance earth-fault protection
• Voltage and frequency protection
• Power-based protection
• Three combi-sensor inputs
• One conventional residual-current input
• Optional fault locator
• Optional power-quality monitoring
• Optional interconnection protection
• Optional synchronism check
• IEC 61850-9-2 LE sampled values

Configuration L has been used with sensor-based switchgear arrangements, including ABB digital switchgear applications.

ABB REF615 Standard Configuration N

Configuration N has the widest function coverage among the REF615 standard configurations. It is normally adapted in PCM600 according to the actual feeder protection scheme.

Available protection and supervision functions cover:

• Directional overcurrent protection
• Non-directional overcurrent protection
• Directional earth-fault protection
• Non-directional earth-fault protection
• Multifrequency neutral-admittance earth-fault protection
• High-impedance differential protection
• Voltage and frequency protection
• Power-based protection
• Synchronism check
• Circuit-breaker condition monitoring
• Optional fault locator
• Optional power-quality functions
• Optional interconnection protection

Configurations L and N are useful where a common REF615 hardware version is preferred for different feeder applications, and the final logic is prepared through PCM600.

ABB REF615 Protection Functions

The exact functions depend on the selected standard configuration and order code.

Overcurrent Protection

REF615 supports feeder short-circuit and overload protection through functions such as:

• Low-set overcurrent protection
• High-set overcurrent protection
• Instantaneous overcurrent protection
• Directional overcurrent protection
• Negative-sequence overcurrent protection
• Phase discontinuity protection
• Thermal overload protection for feeders and cables
• Circuit-breaker failure protection
• Inrush current detection
• Switch-onto-fault protection

Earth-Fault Protection

Different REF615 configurations are available for various network earthing methods.

Earth-fault protection functions cover:

• Non-directional earth-fault protection
• Directional earth-fault protection
• Sensitive earth-fault protection
• Transient and intermittent earth-fault protection
• Admittance-based earth-fault protection
• Wattmetric earth-fault protection
• Harmonics-based earth-fault protection
• Multifrequency neutral-admittance protection
• High-impedance restricted earth-fault protection

For an ABB REF615 directional earth-fault relay quotation, share the network earthing method and confirm whether residual current and residual voltage are measured or calculated.

Voltage and Frequency Protection

Selected REF615 configurations provide:

• Undervoltage protection
• Overvoltage protection
• Residual overvoltage protection
• Positive-sequence undervoltage protection
• Negative-sequence overvoltage protection
• Underfrequency protection
• Overfrequency protection
• Rate-of-change-of-frequency protection
• Synchronism check
• Energising check
• Fuse-failure supervision

Auto-Reclosing

Optional auto-reclosing is used mainly on overhead-line feeders where temporary faults may clear after the circuit breaker opens.

The actual number of shots, dead time, reclaim time and blocking conditions are set according to the feeder protection philosophy.

Arc-Flash Protection

REF615 can be ordered with three optional light-detection channels. Arc sensors can be installed in areas such as:

• Circuit-breaker compartment
• Busbar compartment
• Cable termination compartment

The arc-light signal can be combined with an overcurrent condition for fast and selective operation during an internal switchgear arc fault.

Control, Monitoring and Recording Functions

ABB REF615 also handles control and supervision requirements inside a feeder panel.

Available functions include:

• Circuit-breaker opening and closing
• Circuit-breaker position indication
• Disconnector position indication
• Earthing-switch position indication
• Circuit-breaker condition monitoring
• Trip-circuit supervision
• Current-circuit supervision
• Fuse-failure supervision
• Fault recording
• Event recording
• Disturbance recording
• Current and voltage measurement
• Power and energy measurement
• Frequency measurement
• Power-quality monitoring in selected configurations
• Local and remote control
• Programmable alarm indications

The relay configuration, single-line diagram, signals, protection logic and IEC 61850 communication settings are prepared through ABB PCM600.

Technical Specifications

• Brand: ABB
• Product family: Relion 615 Series
• Model: REF615
• Product type: Feeder protection and control relay
• Standard configurations: A, B, C, D, E, F, G, H, J, K, L and N
• Main application: Overhead-line and cable feeder protection
• Rated frequency: 50/60 Hz
• Phase-current input rating: 1 A or 5 A
• Residual-current input options: 0.2/1 A or 1/5 A, depending on the ordered version
• Voltage input range: 60–210 V AC
• Conventional CT inputs: Up to five, depending on configuration
• Conventional VT inputs: Up to five, depending on configuration
• Sensor arrangement: Three combi-sensor inputs plus one residual-current input in Configurations G and L
• Binary inputs: Up to 18, depending on configuration
• Binary outputs: Up to 13, depending on configuration
• High-speed outputs: Up to three in selected hardware versions
• RTD inputs: Up to six
• mA inputs: Up to two
• Auxiliary supply – high range: 100–240 V AC or 48–250 V DC
• Auxiliary supply – low range: 24–60 V DC
• Continuous operating temperature: –25°C to +55°C
• Front protection: IP54 when flush mounted
• Rear terminal protection: IP20
• Installation altitude: Up to 2,000 metres
• Frame size: Approximately 177 × 177 mm
• Case depth: Approximately 201 mm
• Complete relay weight: Approximately 4.1 kg
• Configuration software: ABB PCM600
• Design standard: IEC 60255 series

The exact input, output and power-supply arrangement must be checked from the complete ABB REF615 order code.

Communication Options

ABB REF615 supports communication with SCADA and substation automation systems through selected communication modules.

Available protocols and interfaces include:

• IEC 61850 Edition 1 and Edition 2
• IEC 61850 GOOSE messaging
• IEC 61850-9-2 LE sampled values
• Modbus TCP/IP
• Modbus RTU and ASCII
• DNP3 TCP/IP
• DNP3 serial
• IEC 60870-5-103
• Copper Ethernet through RJ45
• Fibre-optic Ethernet through LC connectors
• Serial RS-232 and RS-485
• Serial fibre communication
• PRP network redundancy
• HSR network redundancy
• RSTP Ethernet ring
• IEEE 1588 time synchronisation on supported communication modules

The communication card should be confirmed before ordering because not every protocol and physical interface is available in every REF615 version.

Features

• Dedicated protection for overhead lines and cable feeders
• Twelve preconfigured application versions
• Directional and non-directional feeder protection options
• Protection for different network earthing arrangements
• Conventional CT and VT input versions
• Current and voltage sensor versions
• Circuit-breaker control from the relay
• Optional auto-reclosing
• Optional arc-flash detection with three sensors
• Fault, event and disturbance recording
• Circuit-breaker condition monitoring
• Voltage and frequency protection in selected configurations
• Synchronism check for connecting two networks
• Fault locator available in selected configurations
• Power-quality functions available in selected configurations
• IEC 61850 communication and GOOSE messaging
• Process-bus support in selected sensor configurations
• Withdrawable plug-in relay unit
• Local HMI and Web HMI access
• Configuration through ABB PCM600
• Suitable for new installations, replacements and switchgear upgrade projects

Applications

ABB REF615 feeder protection relays are used for:

• Incoming feeder protection
• Outgoing feeder protection
• Overhead-line protection
• Underground cable protection
• Ring-main distribution systems
• Radial distribution networks
• Meshed distribution networks
• Utility substations
• Industrial substations
• Medium-voltage switchgear
• Bus-coupler panels
• Captive power distribution
• Feeder protection with distributed generation
• Directional earth-fault protection
• Sensitive earth-fault protection
• Voltage and frequency protection
• Synchronism-check applications
• Auto-reclosing schemes
• Arc-flash protection
• Feeder fault location
• Circuit-breaker control and supervision

Typical users include power utilities, switchgear manufacturers, panel builders, steel plants, cement plants, mining companies, oil and gas facilities, water-treatment plants, renewable-energy projects, infrastructure facilities and large manufacturing units.

REF615 Replacement and REX615 Migration

ABB identifies REX615 as the next step for the earlier 615 and 620 relay series and states that no further product releases are planned for those earlier platforms. REF615, however, remains widely installed, so enquiries continue for matching replacements, spare relays and existing-panel requirements.

For an ABB REF615 replacement relay, do not select the unit only by comparing the front-panel model name. Check:

• Complete existing relay order code
• REF615 product version
• Standard configuration letter
• Auxiliary supply voltage
• CT and VT input ratings
• Binary input voltage
• Binary input and output arrangement
• Communication card
• Communication protocol
• Arc sensor option
• RTD and mA module
• Existing PCM600 configuration
• Panel cut-out and terminal arrangement
• IEC 61850 configuration files

Depending on product availability and the project requirement, the offer may cover a matching REF615 configuration or a suitable migration to ABB REX615.

Buyers looking for an ABB REF615 feeder protection relay supplier and exporter in India can contact us for pricing, availability, configuration checks, replacement requirements and export supply.