ABB REF620 Feeder Protection and Control Relay

ABB REF620 Feeder Protection and Control Relay Suppliers,Exporters in India

ARP IMPEX supplies and exports ABB REF620 feeder protection and control relays from India for utility substations, industrial switchgear, panel builders, EPC contractors and power distribution projects. We handle enquiries for existing switchgear extensions, replacement requirements, maintenance spares and overseas supply.

ABB Relion REF620 is a feeder management relay used for protection, control, measurement and supervision in medium-voltage distribution systems. It works with radial, ring and meshed networks and can also be applied where distributed generation is connected to the electrical network.

Although feeder protection is its main application, REF620 has enough input, output and software capacity for more involved schemes. Depending on the selected configuration and optional package, the relay can also protect motor feeders, capacitor banks, distributed generation connections and high-impedance busbar differential schemes.

Buyers looking for an ABB REF620 feeder protection relay supplier in India should share the complete order code. REF620 is available with different analogue inputs, binary input/output modules, communication cards, power supplies and software packages. The model name alone is not enough to identify the correct replacement.

ABB REF620 Models and Configurations

REF620 is one relay family rather than a group of separate model numbers. The IEC product is available with two main default configurations:

• REF620 Configuration A – Conventional CT and VT inputs
• REF620 Configuration B – Current and voltage sensor inputs

ABB treats these default configurations as engineering starting points. The final protection logic, control scheme, interlocks and signals must be adapted in PCM600 to suit the actual panel and network requirements.

ABB REF620 Configuration A – Conventional CT and VT Inputs

Configuration A is selected for switchgear using conventional current transformers and voltage transformers.

Its analogue input arrangement covers:

• Three phase-current inputs
• One residual-current input
• Three phase-voltage inputs
• One residual-voltage input
• One additional phase-to-phase voltage input for synchronism check

The phase-current and residual-current inputs accept 1 A or 5 A CT secondaries. A sensitive 0.2/1 A residual-current input can be selected for applications using a core-balance current transformer.

Configuration A has more physical voltage inputs and more available binary input/output capacity than the sensor version. This makes it useful for incomers, outgoing feeders, bus couplers and panels controlling several primary devices.

ABB REF620 Configuration B – Sensor Inputs

Configuration B is made for switchgear using current and voltage sensors.

The relay provides:

• Three combined current and voltage sensor inputs
• One conventional residual-current input
• Current measurement through Rogowski coil sensors
• Voltage measurement through voltage sensors
• IEC 61850-9-2 LE process-bus support
• Protection, control and measurement for digital switchgear applications

Combined sensors can be connected through RJ45 interfaces. Separate current and voltage sensors can also be used with suitable adapters.

Configuration B has fewer physical voltage measurements than Configuration A. Synchronism-check applications may therefore require voltage values received through the IEC 61850 process bus.

ABB REF620 Optional Application Packages

The base relay can be ordered with additional software packages. These packages extend REF620 beyond standard feeder protection.

Fault Locator Package – Option F

The optional fault locator estimates the distance to a fault on a radial feeder. It is intended for overhead-line and cable networks where faster identification of the faulted section can reduce inspection and restoration time.

The function uses measured impedance to estimate the fault location. It also provides information about the probable fault type and estimated fault resistance.

Capacitor Bank Protection Package – Option C

This package is used for single-star and double-star shunt capacitor bank protection.

Protection functions cover requirements such as:

• Capacitor bank overload
• Undercurrent protection
• Phase-current unbalance
• Neutral-current unbalance
• Neutral-voltage unbalance
• Capacitor bank resonance protection
• Three-phase voltage protection
• Directional earth-fault protection

The package can be used with capacitor banks installed in isolated or compensated neutral networks.

For an ABB REF620 capacitor bank protection relay quotation, share the capacitor bank connection, rated voltage, kvar rating, number of steps and CT/VT arrangement.

Interconnection and Distributed Generation Package – Option D

Option D is used where an industrial generator, solar plant, wind project or other distributed generation source operates in parallel with the utility network.

Functions available under this package cover:

• Low-voltage ride-through
• Directional reactive power and undervoltage protection
• Voltage vector-shift protection
• Voltage and frequency supervision
• Synchronism check
• Distributed generation disconnection logic
• Arc-flash protection when the required hardware is selected

This package helps determine when the generating source should remain connected and when it should be separated from the grid after an abnormal network condition.

Power Protection Package – Option P

The power protection package adds directional active and reactive power functions.

It is used for:

• Motor feeders
• Industrial generator feeders
• Reverse-power protection
• Underpower protection
• Active-power supervision
• Reactive-power supervision
• Selected solar power interconnection applications

This package allows REF620 to handle feeder applications where the direction and level of power flow must be monitored.

Combined Application Package – Option L

Option L combines:

• Fault locator
• Capacitor bank protection
• Interconnection protection
• Power protection

The combined package is suitable where the project requires the broadest available REF620 software coverage. The actual function loading and application configuration should still be checked in PCM600 before finalising the relay.

ABB REF620 Feeder Protection Functions

REF620 covers the main protection requirements for incoming and outgoing medium-voltage feeders.

Available functions include:

• Low-set overcurrent protection
• High-set overcurrent protection
• Instantaneous overcurrent protection
• Directional overcurrent protection
• 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
• High-impedance fault detection
• Negative-sequence overcurrent protection
• Phase discontinuity protection
• Feeder thermal overload protection
• Circuit-breaker failure protection
• Inrush-current detection
• Switch-onto-fault protection
• Master-trip functions

The exact function list depends on the default configuration, selected optional packages and final PCM600 application.

Advanced Earth-Fault Protection

REF620 is commonly selected where the network requires more than standard non-directional earth-fault protection.

The relay can be applied in:

• Isolated-neutral networks
• Compensated networks
• Resistance-earthed networks
• Solidly earthed networks
• Cable distribution systems
• Overhead distribution networks

For correct earth-fault protection selection, share the neutral earthing method, residual-current measurement arrangement, residual-voltage measurement and core-balance CT details.

Voltage and Frequency Protection

REF620 provides voltage and frequency functions for feeder, incomer, bus-coupler and distributed generation applications.

Available protection and supervision functions include:

• Three-phase undervoltage protection
• Three-phase overvoltage protection
• Residual overvoltage protection
• Positive-sequence undervoltage protection
• Negative-sequence overvoltage protection
• Underfrequency protection
• Overfrequency protection
• Rate-of-change-of-frequency protection
• Load shedding
• Load restoration
• Synchronism check
• Energising check
• Fuse-failure supervision

The relay can carry out one to five programmable auto-reclosing shots. It can also perform load shedding based on underfrequency and rate of change of frequency.

Busbar Protection

The standard REF620 functionality includes high-impedance busbar differential protection.

Separate high-impedance differential elements are available for the three phases. Several REF620 relays can also be engineered together for multi-zone busbar protection schemes.

The required CT ratios, CT characteristics, stabilising resistor and voltage-dependent resistor arrangement must be checked before using REF620 for busbar differential protection.

Arc-Flash Protection

REF620 can be supplied with an optional arc-protection interface supporting three point-type light sensors.

The sensors can be installed in the:

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

The relay can use light detection together with an overcurrent condition to issue a fast trip. An optional module with three high-speed outputs can reduce the output operation time by approximately 4–6 milliseconds compared with conventional output relays.

The communication module, arc-light interface and high-speed output board must be confirmed while preparing the order code.

Control and Interlocking

ABB REF620 can control several devices from the local HMI or through a remote control system.

The relay provides function blocks for:

• Three circuit breakers
• Four motor-operated disconnectors or circuit-breaker trucks
• Three motor-operated earthing switches
• Additional disconnector position indications
• Additional earthing-switch position indications

The panel interlocking logic can be prepared through the Signal Matrix and Application Configuration tools in ABB PCM600. External RIO600 input/output modules may be used through IEC 61850 GOOSE where the relay’s own binary channels are not enough.

Measurement and Power-Quality Monitoring

REF620 measures and calculates:

• Phase currents
• Residual current
• Phase voltages
• Residual voltage
• Positive-, negative- and zero-sequence components
• Frequency
• Active power
• Reactive power
• Power factor
• Active energy
• Reactive energy
• Current and power demand

Power-quality functions cover voltage variations, voltage unbalance, current harmonics and voltage harmonics. The relay can calculate current total demand distortion and voltage total harmonic distortion.

Recording and Condition Monitoring

REF620 records information that helps maintenance teams understand why a feeder tripped.

• Recording and monitoring functions include:
• Disturbance recording
• Fault recording
• Event logging
• Load-profile recording
• Circuit-breaker condition monitoring
• Trip-circuit supervision
• Current-circuit supervision
• Fuse-failure supervision
• Relay self-supervision
• Equipment running-hour counters

The disturbance recorder supports up to 12 analogue channels and 64 binary channels. The relay can store the latest 128 fault records and 1,024 time-stamped events in non-volatile memory.

Technical Specifications

• Brand: ABB
• Product family: Relion 620 Series
• Model: REF620
• Product type: Feeder protection and control relay
• Main configurations: A with conventional CT/VT inputs and B with sensor inputs
• Product version covered: IEC 2.0 FP1
• Rated frequency: 50/60 Hz
• Phase-current inputs: Three
• Residual-current input: One
• Current input rating: 1/5 A
• Sensitive residual-current option: 0.2/1 A
• Phase-voltage inputs: Three in conventional configuration
• Residual-voltage input: One in conventional configuration
• Synchronism-check voltage input: One phase-to-phase voltage input in Configuration A
• Voltage input range: 60–210 V AC
• Sensor inputs: Three combined current and voltage sensor inputs in Configuration B
• Binary inputs: Up to 32 with Configuration A or up to 24 with Configuration B, depending on the selected module
• Output options: Power, signal and high-speed output combinations depend on the hardware code
• Optional RTD inputs: Six
• Optional mA inputs: Two
• Binary input voltage: 24–250 V DC
• Adjustable binary input threshold: 16–176 V DC
• Auxiliary supply, wide range: 48–250 V DC or 100–240 V AC
• Auxiliary supply, low range: 24–60 V DC
• Continuous operating temperature: –25°C to +55°C
• Relative humidity: Below 93%, non-condensing
• Installation altitude: Up to 2,000 metres
• Front protection: IP54 when flush mounted
• Rear terminal protection: IP20
• Frame dimensions: Approximately 262.2 mm wide × 177 mm high
• Case depth: Approximately 201 mm
• Complete relay weight: Up to approximately 5 kg
• Configuration software: ABB PCM600
• Construction: Withdrawable plug-in relay unit

Input and output quantities depend on the selected analogue module and binary input/output board. The complete ABB order code must therefore be checked before confirming compatibility with an existing panel.

ABB REF620 Communication Options

REF620 supports communication with SCADA, DCS and substation automation systems.

Available protocols and interfaces include:

• IEC 61850 Edition 1
• IEC 61850 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
• Profibus DPV1 through the SPA-ZC 302 converter
• Copper Ethernet through RJ45
• Fibre-optic Ethernet through LC connectors
• RS-232 and RS-485
• Serial fibre communication through ST connectors
• PRP network redundancy
• HSR network redundancy
• RSTP Ethernet ring
• SNTP time synchronisation
• IRIG-B time synchronisation
• IEEE 1588 PTP in supported Ethernet configurations

Communication protocols and physical ports depend on the communication module fitted in the relay.

Features

• Advanced feeder protection for utility and industrial networks
• Conventional CT and VT input version
• Current and voltage sensor version
• Directional and non-directional protection
• Advanced earth-fault protection for different neutral arrangements
• Optional fault locator
• Optional capacitor bank protection
• Optional distributed generation protection
• Optional active and reactive power protection
• High-impedance busbar differential protection
• Auto-reclosing with programmable shots
• Load shedding and restoration
• Synchronism and energising checks
• Control of circuit breakers, disconnectors and earthing switches
• Optional RTD and mA inputs
• Optional three-channel arc-flash protection
• Optional high-speed tripping outputs
• Circuit-breaker condition monitoring
• Fault, event and disturbance recording
• Power and energy measurement
• Power-quality monitoring
• IEC 61850 Edition 2 communication
• GOOSE messaging for protection and interlocking
• Process-bus support
• Large graphical HMI with single-line diagram
• Sixteen configurable front-panel push buttons
• Withdrawable plug-in construction
• Engineering and configuration through ABB PCM600

Applications

ABB REF620 feeder protection relays are used for:

• Incoming feeder protection
• Outgoing feeder protection
• Overhead-line protection
• Underground cable protection
• Utility distribution substations
• Industrial substations
• Radial distribution systems
• Ring distribution systems
• Meshed distribution networks
• Feeders with distributed generation
• Motor feeder protection
• Shunt capacitor bank protection
• Busbar differential protection
• Industrial generator interconnection
• Solar power-plant interconnection
• Wind power-plant interconnection
• Voltage and frequency protection
• Automatic load shedding
• Automatic load restoration
• Synchronism-check applications
• Auto-reclosing schemes
• Arc-flash-protected switchgear
• Digital switchgear using current and voltage sensors
• Switchgear extensions
• Existing REF620 replacement requirements

REF620 is found in power utilities, steel plants, cement plants, mining projects, oil and gas facilities, refineries, water-treatment plants, data centres, renewable-energy projects, infrastructure facilities and large manufacturing plants.

ABB REF620 Lifecycle and REX615 Replacement

ABB’s current technical-document library lists REF620 IEC under the Limited lifecycle stage. ABB also identifies REX615 as the next step for the 615 and 620 series and recommends it as the current platform for new promotion and one-to-one replacement work. REF620 may still be required for existing frame agreements, installed switchgear extensions and matching spare requirements, subject to order-code availability.

REX615 is available in a wide case matching the mechanical size of the 620 series. ABB states that the wiring and terminal numbers can remain identical when the REX615 is selected with equivalent hardware modules and configuration. However, the replacement must still be checked against the existing REF620 functions, communication setup and PCM600 files.

For an ABB REF620 replacement relay, share:

• Complete REF620 order code
• Clear nameplate photograph
• IEC or ANSI version
• Product and firmware version
• Configuration A or B
• CT, VT or sensor details
• Auxiliary supply voltage
• Binary input voltage
• Input and output module
• RTD and mA requirement
• Optional application package
• Arc-protection requirement
• Communication module
• Communication protocol
• Existing PCM600 configuration
• IEC 61850 configuration files
• Panel cut-out and terminal details

Depending on the requirement, the offer may cover an available REF620 relay or a correctly selected ABB REX615 wide replacement.

Buyers looking for an ABB REF620 feeder protection and control relay supplier and exporter in India can contact us for pricing, availability, configuration checks, matching replacement and export supply.