ABB Relion REX615 Protection and Control Relay

ABB Relion REX615 Protection and Control Relay Suppliers,Exporters in India

ARP IMPEX supplies and exports ABB Relion REX615 protection and control relays from India for switchgear manufacturers, panel builders, EPC contractors, power utilities and industrial projects. We handle enquiries for new installations, relay replacement, substation upgrades and export requirements.

ABB REX615 is a configurable numerical protection relay used in power generation, primary distribution and secondary distribution systems. Instead of keeping separate relay platforms for feeder, transformer, motor, generator, busbar and capacitor bank protection, buyers can select the required protection packages on the same REX615 platform.

The relay covers feeder protection, line differential protection, line distance protection, transformer protection, motor and generator protection, busbar protection, capacitor bank protection, voltage protection, interconnection protection, load shedding, automatic voltage regulation and arc-flash protection.

REX615 is the next step in ABB’s earlier Relion 615 and 620 series. It is particularly useful for customers who already have ABB protection relays installed and want a newer platform without completely changing the panel arrangement. ABB states that the standard REX615 follows the mechanical arrangement of the 615 series, while the wide version corresponds to the wider 620 series format.

For an accurate ABB REX615 relay price and quotation, the application packages, current and voltage inputs, auxiliary supply, binary input/output requirement, and communication protocol must be confirmed before ordering.

ABB REX615 Models and Versions

ABB REX615 is not supplied as several fixed models under names such as feeder relay, transformer relay or motor relay. It is one configurable relay family available in two main hardware versions.

ABB REX615 Standard Version

The standard version is suitable for regular medium-voltage switchgear panels where the required number of analogue and binary inputs and outputs is limited.

Depending on the selected hardware modules, the standard REX615 can be configured with:

• Up to 7 conventional current inputs
• Up to 8 conventional voltage inputs
• Current and voltage sensor inputs
• Up to 18 binary inputs
• Between 6 and 13 binary outputs
• Up to 6 RTD inputs
• Up to 2 mA inputs or outputs
• Four programmable function buttons on the local HMI

ABB REX615 Wide Version

The wide version is selected where the protection scheme requires more input and output points or control of several primary devices.

Depending on the configuration, the wide REX615 can support:

• Up to 8 conventional current inputs
• Up to 8 conventional voltage inputs
• Current and voltage sensor inputs
• Up to 34 binary inputs
• Between 6 and 21 binary outputs
• Up to 14 RTD inputs
• Up to 5 mA inputs or outputs
• Sixteen programmable function buttons on the local HMI

The actual input and output count depends on the modules selected in the relay ordering code.

ABB REX615 Application Packages

The base relay can be ordered with different software packages. These packages allow the same REX615 hardware platform to be used for different protection applications.

APP1 – Current Protection Package

The current protection package covers the basic functions used in many feeder, cable and distribution transformer applications.

The available protection functions include:

• Non-directional overcurrent protection
• Directional and non-directional earth-fault protection
• Negative-sequence overcurrent protection
• Phase discontinuity protection
• Thermal overload protection
• Restricted earth-fault protection
• Circuit-breaker failure protection
• Inrush current detection
• Switch-onto-fault protection
• Cold-load pickup
• Automatic reclosing

APP1 forms the basic protection package for many REX615 configurations.

APP2 – Earth-Fault Protection Extension Package

This package is used where the network requires more sensitive or selective earth-fault protection.

This package includes:

• Admittance-based earth-fault protection
• Multifrequency admittance-based earth-fault protection
• Wattmetric earth-fault protection
• Transient and intermittent earth-fault protection
• Harmonics-based earth-fault protection
• Touch-voltage-based earth-fault protection
• High-impedance fault detection
• Cable fault detection

It is particularly useful in compensated, isolated and resistance-earthed networks.

APP3 – Feeder Protection Extension Package

The feeder protection extension package adds functions required for more advanced cable and overhead-line feeder protection.

This package includes:

• Directional overcurrent protection
• Directional negative-sequence overcurrent protection
• Power directional elements
• Directional impedance protection
• Reverse-power and underpower protection
• Cable fault detection
• Load blinder functions

This package is normally selected for incoming feeders, outgoing feeders and distribution line protection schemes.

APP4 – Fault Locator Package

APP4 provides fault-location functions for cable and overhead-line feeders.

The fault locator helps the maintenance team estimate where a fault has occurred along the feeder. This can reduce the time spent checking a complete cable route or overhead line after a trip.

APP5 – Voltage Protection Package

The voltage protection package is used for voltage supervision, frequency protection and load-shedding schemes.

This package includes:

• Undervoltage protection
• Overvoltage protection
• Residual overvoltage protection
• Positive-sequence and negative-sequence voltage protection
• Frequency and rate-of-change-of-frequency protection
• Load shedding and restoration
• Synchronism and energising check
• Voltage presence supervision

APP5 is commonly required for incomer panels, bus-coupler panels, power plants and utility interconnection applications.

APP6 – Line Differential Protection Package

This package provides line differential protection for cables and overhead lines.

This package includes:

• Phase-segregated line differential protection
• Protection for a line with a transformer inside the differential zone
• Binary signal transfer
• Directional backup protection
• Protection communication supervision

APP6 is suitable where fast and selective protection is required between two ends of a feeder.

APP7 – Shunt Capacitor Protection Package

APP7 is used for the protection and monitoring of shunt capacitor banks.

This package includes:

• Capacitor bank overload protection
• Undercurrent protection
• Neutral current unbalance protection
• Three-phase current unbalance protection
• Capacitor bank switching resonance protection
• Neutral unbalance voltage protection
• Phase voltage differential protection

For an ABB REX615 capacitor bank protection relay quotation, capacitor bank arrangement, number of steps and CT/VT details should be shared.

APP8 – Interconnection Protection Package

This package is intended for industrial plants and power-generating systems operating in parallel with the utility network.

It is suitable for:

• Solar power plants
• Wind power projects
• Captive power plants
• Distributed generation
• Industrial generators
• Grid-connected renewable projects

Protection functions can include low-voltage ride-through, vector shift, reverse power, directional reactive power, voltage, frequency and interconnection supervision.

APP9 – Machine Protection Package

APP9 is used for motor and generator protection.

This package includes:

• Motor thermal overload protection
• Start-up supervision
• Motor start counter
• Locked-rotor and load-jam protection
• Loss-of-load supervision
• Phase-reversal protection
• Negative-sequence current protection
• Emergency motor start

This package can be extended with ADD1 or ADD2 where more advanced synchronous machine or differential protection is required.

ADD1 – Synchronous Machine Add-On

ADD1 extends the machine protection package for synchronous motors and generators.

Depending on the configuration, it can include:

• Generator differential protection
• Underexcitation protection
• Overexcitation protection
• Accidental energisation protection
• Rotor earth-fault protection
• Stator earth-fault protection
• Out-of-step protection
• Rotor thermal overload protection

ADD2 – Machine Differential Add-On

ADD2 is used where motor or generator differential protection is required.

Available functions include:

• Stabilised machine differential protection
• Instantaneous machine differential protection
• High-impedance differential protection
• Rotor thermal overload protection
• Reverse-power and underpower functions

ADD1 and ADD2 are alternative add-on packages used with the machine protection application.

APP10 – Power Transformer Protection Package

APP10 is used for two-winding power transformer protection.

Available functions include:

• Transformer differential protection
• Restricted earth-fault protection
• Overcurrent and earth-fault backup protection
• Overexcitation protection
• Directional protection
• Transformer current circuit supervision
• Hot-spot temperature monitoring
• Insulation ageing monitoring
• Tap-position indication

For an ABB REX615 transformer differential protection relay, transformer rating, vector group, CT ratios and winding details are required for proper selection.

APP11 – Busbar Protection Package

APP11 is used for busbar protection based on high-impedance differential schemes.

This package covers:

• High-impedance differential protection for individual phases
• Current-transformer circuit supervision
• Busbar fault tripping
• Arc-flash protection support

This package is suitable for industrial switchboards, utility substations and medium-voltage busbar protection applications.

APP12 – OLTC Control Package

APP12 provides control and automatic voltage regulation for an on-load tap changer.

This package covers:

• Automatic voltage regulation
• Manual and automatic tap control
• Tap-position indication
• Transformer data processing
• Parallel transformer control logic

The OLTC package can be combined with transformer protection functions where protection and tap-changer control are required in the same relay.

APP13 – Distance Protection Package

APP13 provides distance protection for distribution and sub-transmission lines.

Available functions include:

• Phase and earth distance protection
• Power-swing detection
• Out-of-step protection
• Scheme communication logic
• Weak-end infeed logic
• Current-reversal logic
• Communication-assisted distance protection

APP13 is selected for overhead-line or cable applications where impedance-based protection is required.

ABB’s current REX615 function documentation lists the base functionality, APP1 to APP13 and the ADD1 and ADD2 machine protection add-ons. The packages can be selected according to the application, although the final combination remains subject to the available hardware and relay processing capacity.

Technical Specifications

• Brand: ABB
• Product family: Relion
• Model: REX615
• Product type: Numerical protection and control relay
• Hardware versions: Standard and wide
• Network frequency: 50 or 60 Hz
• Applications: Power generation, primary distribution and secondary distribution
• Conventional current inputs: Up to 7 in the standard version and up to 8 in the wide version
• Conventional voltage inputs: Up to 8
• Sensor inputs: Current and voltage sensor options available
• Binary inputs: Up to 18 in the standard version and up to 34 in the wide version
• Binary outputs: Up to 13 in the standard version and up to 21 in the wide version
• RTD inputs: Up to 6 in the standard version and up to 14 in the wide version
• Operating temperature: Approximately –25°C to +55°C, subject to the selected hardware and installation conditions
• Local display: Graphical local human-machine interface
• Programmable buttons: Four on the standard version and sixteen on the wide version
• Configuration software: ABB PCM600
• Installation: Withdrawable plug-in relay unit
• Protection standard: IEC 60255 series
• Communication standard: IEC 61850 support
• Arc protection: Integrated arc-flash detection functions available
• Mounting: Flush, semi-flush and other mounting options depending on the ordered accessories

The exact technical specifications depend on the complete ABB ordering code. The relay model name alone is not enough to confirm compatibility with an existing panel.

Communication Options

ABB REX615 can be supplied with communication options for conventional and digital substations.

Available protocols and functions can include:

• IEC 61850 Edition 1
• IEC 61850 Edition 2.1
• IEC 61850 GOOSE messaging
• IEC 61850-9-2 LE sampled values
• IEC 61869-9 sampled values
• IEC 60870-5-103
• IEC 60870-5-104
• Modbus slave
• Modbus master
• DNP3
• PRP Ethernet redundancy
• HSR Ethernet redundancy
• RSTP network redundancy
• SNTP time synchronisation
• IRIG-B time synchronisation
• IEEE 1588 PTP time synchronisation
• Copper and fibre-optic Ethernet options
• RS-485 serial communication

Communication modules and protocols must be confirmed when preparing the relay order code.

Features

• One relay platform for several protection applications
• Standard and wide hardware versions
• Modular current, voltage, binary and communication inputs
• Software packages selected according to the protection scheme
• Protection functions can be added when the project requirement changes
• Suitable for conventional CTs and VTs
• Current and voltage sensor input options available
• Integrated circuit-breaker control
• Disconnector and earthing-switch control
• Circuit-breaker condition monitoring
• Trip-circuit and current-circuit supervision
• Fault and disturbance recording
• Power and energy measurement
• Current and voltage harmonic measurement
• Voltage sag, swell and interruption monitoring
• Integrated arc-flash protection
• IEC 61850 communication
• GOOSE messaging for high-speed signals and interlocking
• Process-bus support for digital substations
• Graphical display with customisable single-line diagram
• Withdrawable plug-in design for easier maintenance
• Suitable for new panels, retrofit work and relay replacement projects

Applications

ABB Relion REX615 protection relays can be considered for:

• Incoming feeder protection
• Outgoing feeder protection
• Cable feeder protection
• Overhead-line protection
• Line differential protection
• Line distance protection
• Distribution transformer protection
• Power transformer differential protection
• Motor protection
• Synchronous motor protection
• Generator protection
• Busbar protection
• Shunt capacitor bank protection
• Voltage and frequency protection
• Utility interconnection protection
• Renewable power-plant protection
• Automatic load shedding
• Automatic load restoration
• On-load tap-changer control
• Circuit-breaker control
• Bus-coupler panels
• Arc-flash protection
• Medium-voltage switchgear
• Digital substations
• Relay retrofit and replacement projects

REX615 is used in power utilities, substations, steel plants, cement plants, oil and gas facilities, mining projects, water-treatment plants, renewable power plants, data centres, infrastructure projects and large industrial distribution systems.

Replacement of ABB 615 and 620 Series Relays

ABB positions REX615 as the next-generation platform for the earlier 615 and 620 series. It can be considered when an existing project uses application-specific ABB relays, but the customer now wants a common, configurable protection platform.

The relay is mechanically aligned with the earlier series, but a replacement should never be selected only by comparing the outer dimensions.

The following must also be checked:

• Existing relay order code
• Terminal arrangement
• Current and voltage input ratings
• Binary input voltage
• Auxiliary supply
• Communication module
• Protection functions
• Trip contacts
• Panel cut-out
• Existing PCM600 configuration
• IEC 61850 system files

Send the old relay nameplate and complete order code when requesting an ABB 615 or 620 series replacement with REX615.

Buyers looking for an ABB Relion REX615 supplier and exporter in India can contact us for pricing, availability, replacement checks and export supply.