ABB Relion REX640 Protection and Control Relay

ABB Relion REX640 Protection and Control Relay Suppliers,Exporters in India

ARP IMPEX supplies and exports ABB Relion REX640 protection and control relays from India for new switchgear projects, substation upgrades, replacement requirements and industrial power distribution systems. The REX640 can be configured for feeder, transformer, motor, generator, busbar, capacitor bank, line and interconnection protection, so buyers can use one relay platform for several protection schemes.

Unlike older protection relays supplied as fixed application-specific models, the ABB REX640 uses modular hardware and selectable software packages. The relay can be ordered with the protection functions, communication options, input modules and control features required for a particular panel or substation. Functions can also be added later when the protection scheme changes.

ABB REX640 Description

The ABB Relion REX640 is an all-in-one numerical protection and control relay used in advanced power generation, primary distribution and industrial electrical networks. It handles protection, control, measurement, monitoring, disturbance recording and communication within the same device.

REX640 is available in narrow and standard case sizes. The narrow version has five module slots, while the standard version has seven. Both versions support the same software options, but the hardware modules can be selected according to the number of current inputs, voltage inputs, binary inputs, outputs, RTD inputs and communication ports required for the project.

For buyers looking for an ABB REX640 protection relay supplier in India, it is important to share the application rather than only asking for the relay name. A feeder protection requirement, transformer differential scheme and generator protection panel may all use REX640, but the software packages and hardware configuration will be different.

REX640 Models and Application Packages

REX640 is not divided into several fixed relay models. It is one configurable relay platform supplied with base functionality and optional application packages.

Base functionality

The standard base software covers commonly required protection, measurement, supervision and control functions, including:

• Overcurrent and earth-fault protection
• Voltage and frequency protection
• Circuit-breaker failure protection
• Arc-flash protection
• Load shedding and restoration
• Circuit-breaker and disconnector control
• Measurement and power-quality functions
• Trip-circuit and current-circuit supervision
• Circuit-breaker condition monitoring
• Disturbance and fault recording
• Synchronism and energising checks

Optional software packages can be combined in the same relay when one panel requires more than one protection application. ABB also allows software options to be modified or added later, including after the relay has been installed.

APP1 – Feeder Earth-Fault Protection Extension Package

Used where the feeder needs more advanced earth-fault protection than the basic functions supplied with the relay. It is suitable for compensated, isolated and resistance-earthed networks, depending on the selected protection arrangement.

APP2 – Feeder Fault Locator Package

Adds fault-location functions for overhead lines and cable feeders. It helps maintenance teams identify the approximate fault position and reduces the time spent checking the complete feeder route.

APP3 – Line Distance Protection Package

Used for distance protection of sub-transmission and distribution lines. This package can be applied where impedance-based line protection and communication-assisted schemes are required.

APP4 – Line Differential Protection Package

Provides current differential protection for overhead lines and cables. It is used where fast and selective line protection is required between two ends of a feeder or distribution line.

APP5 – Shunt Capacitor Protection Package

Used for protection and monitoring of shunt capacitor banks. Available functions include overload, current unbalance, neutral unbalance and capacitor bank switching-related protection.

APP6 – Interconnection Protection Package

Suitable for grid-connected generators, renewable power plants and industrial networks operating in parallel with the utility. It supports interconnection protection requirements such as voltage, frequency, vector shift, reverse power and low-voltage ride-through functions.

APP7 – Machine Protection Package

Used for motors and generators. Depending on the configuration, the package can cover thermal overload, motor start supervision, locked rotor or load jam, phase reversal, negative-sequence current, loss of load, underpower and machine differential protection.

ADD1 – Synchronous Machine Add-On

This add-on extends APP7 for synchronous motor and generator protection requirements. It includes additional protection functions needed for more demanding synchronous machine applications.

APP8 – Power Transformer Protection Package

Used for two-winding transformer protection, restricted earth fault, differential protection, overexcitation and transformer monitoring. REX640 can also handle control and supervision requirements around the transformer bay.

ADD2 – Three-Winding Transformer Add-On

This add-on is selected with the transformer package when the application involves a three-winding power transformer.

APP9 – Busbar Protection Package

Used for busbar differential and high-impedance protection schemes. It is suitable for industrial switchboards, utility substations and primary distribution systems requiring selective busbar fault clearance.

APP10 – OLTC Control Package

Provides automatic voltage regulation and manual or automatic control of an on-load tap changer. It can be used with transformer protection functions in the same REX640 relay.

APP11 – Generator Autosynchronizer Package

Used for automatic synchronisation of a generator breaker before connecting the generator to the bus or network.

APP12 – Network Autosynchronizer Package

Used for synchronising two electrical networks or bus sections before the circuit breaker is closed.

APP13 – Petersen Coil Control Package

Provides control of Petersen coils in compensated networks. The package is intended for neutral compensation and earth-fault management applications.

APP14 – Diesel Generator Monitoring Package

Used for diesel generator monitoring and related power-system supervision requirements.

APP51 – High-Speed Transfer for One Standby Feeder

Used for high-speed bus transfer schemes with one normal and one standby feeder.

APP52 – High-Speed Transfer for Two Standby Feeders

Used where the transfer scheme includes two standby feeders.

APP53 – High-Speed Transfer for Three Equal Feeders

Used for high-speed transfer arrangements involving three equal feeders.

ABB currently identifies 17 selectable application packages along with two application add-ons. The required packages can be combined according to the protection scheme.

ABB REX640 Technical Specifications

• Product range: ABB Relion
• Relay type: Numerical protection and control relay
• Applications: Power generation, primary distribution, sub-transmission and industrial electrical networks
• Hardware sizes: Narrow case with five module slots and standard case with seven module slots
• Rated frequency: 50/60 Hz
• Current inputs: 0.2/1 A or 1/5 A, depending on the selected analogue input module
• Voltage inputs: 57–240 V AC, depending on configuration
• Sensor inputs: Current and voltage sensor input options available
• Auxiliary supply options: 24–60 V DC, 48–250 V DC or 100–240 V AC, depending on the selected power-supply module
• Binary input range: 24–250 V DC, subject to selected module and threshold
• HMI option: Seven-inch colour capacitive touchscreen
• HMI resolution: 800 × 480 pixels
• Configuration software: ABB PCM600
• Continuous operating temperature: –25°C to +55°C
• Relative humidity: Up to 95%, non-condensing
• Installation altitude: Up to 2,000 metres
• Communication: Ethernet, serial and fibre communication options
• Standards: Developed for IEC and ANSI protection applications and designed in accordance with the IEC 60255 series

The exact number of current, voltage, binary and output channels depends on the modules selected for the relay. The complete order code should therefore be checked against the single-line diagram, protection philosophy and input/output schedule before placing an order.

Communication Options

ABB REX640 can be integrated into conventional substations as well as IEC 61850-based digital substations. Communication options include:

• IEC 61850 Edition 2.1
• IEC 61850-8-1 GOOSE messaging
• IEC 61869-9 and IEC 61850-9-2 LE sampled values
• Modbus TCP/IP
• Modbus RTU and ASCII
• DNP3 TCP/IP
• DNP3 serial
• IEC 60870-5-103
• IEC 60870-5-104
• PRP and HSR Ethernet redundancy
• RSTP self-healing ring
• IEEE 1588 time synchronisation
• IRIG-B time synchronisation

Communication hardware and protocol support must be selected when finalising the relay configuration.

Main Features

• One relay platform for several protection applications
• Modular hardware with replaceable input, output and communication modules
• Software packages can be selected according to the actual project
• Protection functions can be added when the application changes
• Feeder, transformer, motor, generator, line and busbar protection in one platform
• Integrated arc-flash protection functions
• Circuit-breaker control and condition monitoring
• Fault records and disturbance recording for post-fault analysis
• Support for conventional CTs and VTs as well as current and voltage sensors
• IEC 61850 communication for substation automation
• GOOSE messaging for high-speed interlocking and protection signals
• Process-bus support for digital substation applications
• Large colour HMI for measurements, alarms, events and switching status
• Engineering and configuration through ABB PCM600
• Suitable for new panels, retrofit projects and substation modernisation

Applications

ABB REX640 protection and control relays are commonly considered for:

• Incoming and outgoing feeder protection
• Medium-voltage switchgear panels
• Primary distribution substations
• Sub-transmission lines
• Transformer differential protection
• Two-winding and three-winding transformer protection
• Motor protection panels
• Generator protection and synchronisation
• Busbar protection schemes
• Shunt capacitor bank protection
• Renewable power-plant interconnection
• Solar and wind power evacuation substations
• Industrial captive power plants
• Utility and industrial load-shedding schemes
• Petersen coil control
• High-speed bus transfer systems
• Arc-flash protection
• New switchgear manufacturing
• Existing relay replacement and retrofit projects

Industries using REX640 include power utilities, oil and gas plants, steel plants, cement plants, mining operations, water-treatment plants, data centres, renewable power projects, infrastructure facilities and large manufacturing units.

Information Required for ABB REX640 Quotation

For the correct ABB REX640 relay selection and commercial offer, please share:

• Required relay order code, when available
• Application: feeder, transformer, motor, generator, busbar or line
• Single-line diagram
• Protection function list
• CT ratio and secondary rating
• VT ratio and secondary voltage
• Auxiliary supply voltage
• Required number of current and voltage inputs
• Binary input and output requirement
• Communication protocol
• Copper or fibre communication requirement
• HMI requirement
• Arc sensor requirement
• Panel cut-out or mounting requirement
• Required software application packages
• Destination country and required quantity

ARP IMPEX can quote against an existing ABB REX640 order code or help identify a suitable configuration from the available project details. Send us your relay nameplate, bill of quantities, protection schedule or single-line diagram for an offer from an ABB Relion REX640 supplier and exporter in India.