ABB RED615 Line Differential Protection Relay

ABB RED615 Line Differential Protection Relay Supplier and Exporter in India

ARP IMPEX supplies and exports ABB RED615 line differential protection and control relays from India for utility substations, industrial switchgear, power plants, EPC projects and electrical distribution networks.

We handle enquiries for new projects, existing relay replacement, switchgear extensions and matching spare requirements. Buyers can send the complete ABB RED615 part code, required quantity and destination country for pricing and availability.

ABB Relion RED615 is a two-end line differential relay used for fast and selective protection of overhead lines and cable feeders. One RED615 relay is installed at each end of the protected line. The two relays compare the measured currents and operate when they detect a fault inside the protected section.

RED615 is suitable for radial, looped and meshed distribution networks, including networks with distributed generation. It can also protect line sections that have a power transformer located inside the differential protection zone. Communication between the two relay ends is carried over a fibre-optic link or galvanic pilot-wire connection.

Along with line differential protection, selected RED615 configurations provide overcurrent protection, earth-fault protection, voltage and frequency protection, auto-reclosing, fault location, circuit-breaker control and condition monitoring.

Buyers searching for an ABB RED615 line differential protection relay supplier in India should share the full part code whenever possible. The model name alone does not confirm the standard configuration, communication interface, current inputs, voltage inputs or auxiliary supply.

Request a Quote for ABB RED615

Send the complete ABB RED615 part code, required quantity and destination country for pricing and availability.

For an existing relay replacement, you can also share a clear photograph of the RED615 nameplate.

When the complete part code is unavailable, send:

• Line or cable application
• System voltage
• CT ratio and secondary current
• Auxiliary supply voltage
• Communication link requirement
• Station communication protocol
• Required quantity
• Destination country

We can review the available information and check the suitable RED615 configuration.

Why Buy ABB RED615 from ARP IMPEX?

• Supply against complete ABB part code
• Support for exact replacement and matching spare requirements
• Quotations for single units and project quantities
• Part-code and nameplate checking before quotation
• Technical datasheets supplied with the offer
• Export packing and shipping assistance
• Support for switchgear extensions and plant maintenance
• Supply for panel builders, EPC contractors and industrial buyers
• Assistance with international ABB protection relay enquiries

ARP IMPEX handles enquiries from buyers looking for an ABB RED615 supplier and exporter from India for line protection, cable feeder protection and substation projects.

ABB RED615 Models and Standard Configurations

ABB RED615 is a one-line differential relay family with different application configurations. The IEC version is available in five standard configurations: A, B, C, D and E. These ready-made configurations can be adjusted through ABB PCM600 according to the line, cable and switchgear arrangement.

ABB RED615 Configuration A

Configuration A provides the main functions required for two-end line differential protection.

It is commonly selected for:

• Overhead-line differential protection
• Cable feeder differential protection
• Basic two-end protection schemes
• Lines with a transformer inside the protection zone
• Applications requiring current-based backup protection

The configuration includes line differential protection, overcurrent backup, negative-sequence current protection, circuit-breaker failure protection, inrush detection and binary signal transfer between the two relay ends.

ABB RED615 Configuration B

Configuration B combines line differential protection with directional earth-fault protection and circuit-breaker condition monitoring.

It is suited to:

• Isolated-neutral networks
• Compensated networks
• Resistance-earthed networks
• Cable feeders requiring selective earth-fault protection
• Overhead lines requiring directional earth-fault protection

This version is selected where the direction of an earth fault needs to be identified from current and residual-voltage measurements.

ABB RED615 Configuration C

Configuration C combines line differential protection with non-directional earth-fault protection and circuit-breaker condition monitoring.

It is commonly used for:

• Solidly earthed networks
• Low-impedance-earthed systems
• Incoming and outgoing cable feeders
• Applications where current-based earth-fault protection is sufficient
• Standard industrial feeder protection schemes

Configurations B and C provide similar line differential protection but use different earth-fault protection principles.

ABB RED615 Configuration D

Configuration D provides broader feeder protection using conventional current transformers and voltage transformers.

Its functions cover:

• Line differential protection
• Directional overcurrent protection
• Directional earth-fault protection
• Voltage and frequency protection
• Synchronism check
• Auto-reclosing
• Circuit-breaker condition monitoring
• Optional fault location
• Optional power-quality monitoring
• Optional RTD and mA inputs

Configuration D is generally selected for more involved feeder schemes where the relay must handle line protection, voltage supervision, measurement and breaker control from one unit.

ABB RED615 Configuration E

Configuration E provides advanced line differential protection using current and voltage sensors.

It is commonly selected for:

• Digital switchgear
• Switchgear using Rogowski coil current sensors
• Panels using voltage sensors
• IEC 61850 process-bus applications
• ABB UniGear Digital and similar sensor-based systems

Configuration E also supports directional feeder protection, earth-fault protection, voltage and frequency functions, optional fault location, power-quality monitoring and synchronism checking. ABB states that this configuration is prepared for sensor-based switchgear but is not limited only to ABB switchgear.

ABB RED615 IEC and ANSI Versions

RED615 is available in IEC and ANSI product versions. The five configurations described above refer to the IEC product.

Buyers should mention ABB RED615 IEC or ABB RED615 ANSI when requesting a quotation because the protection functions, naming conventions and order codes differ.

Technical Specifications

• Brand: ABB
• Product family: Relion 615 Series
• Model: RED615
• Product type: Line differential protection and control relay
• Main application: Two-end protection of overhead lines and cable feeders
• IEC standard configurations: A, B, C, D and E
• Network arrangements: Radial, looped and meshed networks
• Distributed generation: Supported
• In-zone transformer protection: Supported
• Protection communication: Fibre-optic link or galvanic pilot wire
• Phase-current input rating: 1 A or 5 A
• Sensitive current-input option: 0.2/1 A, depending on the ordered hardware
• Voltage input range: 60–210 V AC in voltage-input configurations
• Rated frequency: 50/60 Hz
• Current input type: Conventional CT or current sensor, depending on configuration
• Voltage input type: Conventional VT or voltage sensor, depending on configuration
• Auxiliary supply, wide range: 100–240 V AC or 48–250 V DC
• Auxiliary supply, low range: 24–60 V DC
• Station communication: IEC 61850, Modbus, DNP3 and IEC 60870-5-103
• Process-bus support: IEC 61850-9-2 LE in supported configurations
• Ethernet interfaces: Copper RJ45 or fibre-optic LC
• Serial interfaces: RS-232, RS-485 or serial fibre, depending on the communication module
• Network redundancy: PRP, HSR and RSTP in supported versions
• Configuration software: ABB PCM600
• Local interface: Graphical local HMI
• Remote access: Web HMI
• Construction: Withdrawable plug-in relay unit
• Operating temperature: Approximately –25°C to +55°C
• Installation altitude: Up to 2,000 metres
• Approximate frame size: 177 × 177 mm
• Approximate depth: 201 mm
• Approximate complete relay weight: 4.1 kg

The exact current inputs, voltage inputs, binary channels, auxiliary supply and communication interface depend on the complete ABB RED615 order code.

Features

• Phase-segregated two-end line differential protection
• Fast and selective protection of cable and overhead feeders
• Protection communication between two substations
• Fibre-optic and galvanic pilot-wire communication options
• Support for a transformer inside the protection zone
• Five standard IEC configurations
• Conventional CT and VT input versions
• Current and voltage sensor version
• Directional and non-directional overcurrent protection
• Directional and non-directional earth-fault protection
• Sensitive earth-fault protection
• Transient and intermittent earth-fault protection
• Negative-sequence current protection
• Phase discontinuity protection
• Feeder thermal overload protection
• Voltage and frequency protection in selected configurations
• Circuit-breaker failure protection
• Switch-onto-fault protection
• Multi-shot auto-reclosing
• Binary signal transfer between line ends
• Protection communication supervision
• Optional fault locator
• Optional power-quality monitoring
• Synchronism and energising checks
• Circuit-breaker opening and closing control
• Disconnector and earthing-switch control
• Circuit-breaker condition monitoring
• Trip-circuit and current-circuit supervision
• Fault and disturbance recording
• Event and load-profile recording
• IEC 61850 and GOOSE communication
• Process-bus support in selected configurations
• Local and remote relay access
• Configuration through ABB PCM600

ABB positions RED615 as a compact line differential relay that combines protection, control, monitoring and communication in one unit.

Line Differential Protection

RED615 uses current measurements from both ends of the protected feeder. Each relay sends its measured current information to the relay at the opposite end.

During normal operation or a fault outside the protected section, the currents remain balanced. When a fault occurs inside the protected line or cable section, the difference between the two measurements causes the relays to trip the circuit breakers.

This protection principle is commonly used for:

• Important cable feeders
• Short and medium-length overhead lines
• Feeders between two substations
• Industrial plant interconnectors
• Feeders requiring fast fault clearance
• Lines with bidirectional power flow

The line differential communication channel is an important part of the protection scheme. RED615 supervises this link and can block the differential function and issue an alarm if a serious communication problem is detected.

Protection of Lines with an In-Zone Transformer

RED615 can protect a line or cable section that has a power transformer inside the differential zone.

This arrangement is useful where:

• A transformer is connected between two substations
• A distribution transformer is installed along the protected feeder
• The transformer and line need to be covered by one differential protection zone
• Separate transformer differential protection is not part of the selected scheme

The application must be configured using the transformer ratio, vector group and CT details from both ends.

Backup Feeder Protection

RED615 also provides backup protection if the main line differential function is unavailable or if a fault occurs outside the protected line section.

Depending on the configuration, backup protection covers:

• Phase overcurrent
• Directional overcurrent
• Earth-fault protection
• Negative-sequence overcurrent
• Thermal overload
• Circuit-breaker failure
• Switch-onto-fault protection

This allows RED615 to handle the main differential protection and the commonly required feeder backup functions in one relay.

Binary Signal Transfer

RED615 can transfer binary signals between the two relay ends through the line differential communication channel.

These signals can be used for:

• Direct transfer tripping
• Interlocking
• Remote breaker status
• Protection permissive signals
• Blocking signals
• Other scheme-specific commands

This can reduce the need for a separate communication device for basic protection signals.

Fault Location

Fault location is available as an option in selected RED615 configurations.

The relay estimates the position of a fault on an overhead line or cable feeder. This can reduce the time spent checking the complete feeder route after a trip.

For an ABB RED615 relay with fault locator, buyers should share the line length, conductor or cable details, impedance data and selected relay configuration.

Applications

ABB RED615 is commonly used for:

• Two-end line differential protection
• Underground cable feeder protection
• Overhead-line protection
• Inter-substation feeder protection
• Radial distribution networks
• Ring and looped networks
• Meshed distribution networks
• Feeders with distributed generation
• Feeders with bidirectional power flow
• Lines with an in-zone transformer
• Utility distribution substations
• Industrial substations
• Power plant feeders
• Captive power distribution
• Renewable power evacuation feeders
• Solar and wind power interconnections
• Medium-voltage switchgear
• Digital switchgear using current and voltage sensors
• Auto-reclosing overhead feeders
• Feeder fault-location applications
• Switchgear extension projects
• Existing ABB RED615 replacement requirements

Industries Using ABB RED615

ABB RED615 line differential protection relays are commonly required in:

• Power utilities
• Power plants
• Renewable power projects
• Steel plants
• Cement plants
• Mining operations
• Oil and gas facilities
• Refineries
• Petrochemical plants
• Water-treatment plants
• Data centres
• Metro and railway power systems
• Infrastructure projects
• Large manufacturing facilities
• Industrial captive power plants

ABB RED615 Replacement

ABB RED615 is installed in many existing cable and overhead-line protection panels. Buyers may require the same unit for plant maintenance, switchgear extensions or matching spare inventory.

The complete part code should be checked before ordering because RED615 units can differ in:

• Configuration A, B, C, D or E
• IEC or ANSI version
• Current and voltage inputs
• CT or sensor arrangement
• Auxiliary supply voltage
• Binary input and output modules
• Protection communication interface
• Station communication card
• Firmware version
• Existing PCM600 configuration

ABB positions REX615 as the next step for the earlier 615 and 620 Series. REX615 includes a line differential protection application package, but it should not be treated as an automatic replacement without checking the existing wiring, communication channel and protection configuration.

For an ABB RED615 replacement relay, send the complete part code and a clear nameplate photograph. An existing PCM600 file is also useful when available.

Information Required for ABB RED615 Quotation

For pricing and availability, please share:

• Complete ABB RED615 part code or order code
• Required quantity
• Destination country
• Required delivery schedule

For replacement requirements, also share a clear photograph of the existing relay nameplate.

ARP IMPEX accepts ABB RED615 enquiries against a part code, relay nameplate, bill of quantities, single-line diagram or protection schedule.

Contact us for an ABB RED615 line differential protection relay price, Configuration A–E availability, matching replacement or export quotation from India.