ABB REM615 Motor Protection and Control Relay

ABB REM615 Motor Protection and Control Relay Suppliers,Exporters in India

ARP IMPEX supplies and exports ABB REM615 motor protection and control relays from India for motor control centres, medium-voltage switchgear, industrial plants, utilities and EPC projects. We accept enquiries for new panels, existing relay replacement, plant maintenance requirements and overseas supply.

ABB Relion REM615 is made for the protection, control, measurement and supervision of asynchronous motors. It keeps watch over the motor during starting and normal running and trips the motor when it detects conditions such as overload, stalled rotor, phase reversal, current unbalance, earth fault or loss of load.

The relay is commonly used with circuit-breaker-controlled and contactor-controlled motors in manufacturing and process plants. It also provides motor operating data, fault records, event logs, circuit-breaker supervision and communication with SCADA or substation automation systems.

For the correct ABB REM615 relay price and quotation, buyers should share the full order code and a photograph of the existing relay nameplate. REM615 is available in several standard configurations, and the model name alone does not confirm the voltage inputs, RTD module, sensor arrangement, communication card or auxiliary supply.

ABB REM615 Models and Standard Configurations

REM615 is one motor protection relay family supplied in four standard configurations: A, B, C and D. These are configurations of the same relay rather than four separate product models.

ABB REM615 Standard Configuration A

Configuration A is the basic motor protection version. It uses conventional current transformer inputs and is selected where the protection scheme is mainly based on motor current.

It covers the main motor protection requirements, including:

• Motor thermal overload protection
• Motor start-up supervision
• Protection against excessive or frequent starts
• Locked-rotor and load-jam protection
• Negative-sequence current protection
• Phase-reversal protection
• Loss-of-load supervision
• Backup overcurrent protection
• Earth-fault protection
• Circuit-breaker failure protection
• Emergency motor starting
• Circuit-breaker condition monitoring

An optional RTD and mA module can be added to Configuration A. This module provides six RTD inputs and two mA inputs for monitoring motor winding temperature, bearing temperature or other plant measurements.

Configuration A is generally considered where voltage and frequency protection are not required from the motor relay.

ABB REM615 Standard Configuration B

Configuration B adds voltage and frequency-based protection and measurement to the main motor protection functions.

This configuration uses conventional CT and VT inputs and can provide:

• Three-phase undervoltage protection
• Positive-sequence undervoltage protection
• Negative-sequence overvoltage protection
• Overfrequency protection
• Underfrequency protection
• Rate-of-change-of-frequency protection
• Directional earth-fault protection
• Voltage and frequency measurement
• Active and reactive power measurement
• Energy and power-factor measurement
• Fuse-failure supervision

The optional six-RTD and two-mA input module is also available for Configuration B. This makes it useful for motors where winding and bearing temperature monitoring is required along with electrical protection.

ABB REM615 Standard Configuration C

Configuration C provides motor protection with current, voltage and frequency-based functions using conventional transformer inputs.

It covers the main motor protection functions available in Configurations A and B, along with voltage, frequency, power and energy measurement. Unlike Configurations A and B, Configuration C does not carry the optional RTD and mA input arrangement shown for those versions.

Configuration C may be selected where the customer needs:

• Current-based motor protection
• Voltage and frequency protection
• Power and energy measurements
• Directional earth-fault protection
• Circuit-breaker control and supervision
• IEC 61850 communication
• Fault and disturbance recording

ABB REM615 Standard Configuration D

Configuration D provides motor protection with voltage and frequency functions using sensor inputs.

This version supports:

• Three Rogowski-coil current sensor inputs
• Three voltage sensor inputs
• A conventional residual-current input
• A residual-voltage input arrangement
• Motor current protection
• Voltage and frequency protection
• Directional earth-fault protection
• Power and energy measurement
• IEC 61850 process-bus applications

ABB has preconfigured this version for sensor-based switchgear applications such as UniGear Digital, although it is not restricted only to that switchgear range.

For an ABB REM615 Configuration D supplier in India, the current sensor, voltage sensor, residual-current input and switchgear details should be confirmed before ordering.

ABB REM615 Motor Protection Functions

The exact function list depends on the selected configuration and hardware options.

Motor Thermal Overload Protection

REM615 calculates the thermal condition of the motor from operating current, motor heating and cooling data and the selected protection settings. It can issue an alarm or trip before the motor reaches an unsafe thermal condition.

This function is useful where repeated starts, long starting times or continuous heavy loading may overheat the motor.

Motor Start-Up Supervision

The relay checks the motor current and starting time whenever the motor is started. It can detect:

• Starting time exceeding the permitted value
• Motor failing to accelerate
• Rotor remaining locked
• Starting current remaining high for too long
• Repeated starts within a short period
• Motor restart before sufficient cooling

The relay includes a restart-inhibit function that can block another start until the calculated thermal condition permits it.

Load-Jam and Locked-Rotor Protection

REM615 can trip the motor when a mechanical problem causes the running current to rise sharply.

This may occur due to:

• Jammed conveyors
• Blocked crushers
• Seized pumps
• Damaged bearings
• Mechanical obstruction
• Locked compressor or fan assemblies

The protection helps limit damage to the motor, coupling and driven equipment.

Loss-of-Load Protection

Loss-of-load supervision detects an unusual drop in motor current.

This can indicate conditions such as:

• Dry running of a pump
• Broken conveyor belt
• Disconnected mechanical load
• Damaged coupling
• Loss of compressor load
• Pump losing suction

Current-Unbalance Protection

Negative-sequence current protection monitors current unbalance between the three phases. It can detect conditions that may cause additional heating in the motor, including:

• Supply voltage unbalance
• Blown fuse
• Poor terminal connection
• Open phase
• Uneven phase loading

Phase-Reversal Protection

Phase-reversal protection detects an incorrect phase sequence. This is important for pumps, compressors, fans and conveyors where reverse rotation could damage the equipment or interrupt the process.

Overcurrent and Short-Circuit Protection

REM615 provides low-set, high-set and instantaneous overcurrent stages for backup protection against phase faults.

It also provides circuit-breaker failure protection where a backup trip is required if the motor feeder breaker does not clear the fault.

Earth-Fault Protection

Available earth-fault functions depend on the selected REM615 configuration.

Protection options cover:

• Non-directional earth-fault protection
• Directional earth-fault protection
• Sensitive residual-current measurement
• Earth-fault protection using calculated residual current
• Protection using a core-balance current transformer

For an ABB REM615 earth-fault motor protection relay quotation, share the network earthing method and confirm whether a separate core-balance CT is installed.

Voltage and Frequency Protection

REM615 Configurations B, C and D include voltage and frequency protection functions such as:

• Three-phase undervoltage
• Positive-sequence undervoltage
• Negative-sequence overvoltage
• Underfrequency
• Overfrequency
• Rate-of-change-of-frequency

These functions help protect the motor against poor supply conditions that may cause overheating, loss of torque or unstable operation.

Emergency Motor Start

Some industrial processes require a motor to start even when the relay’s thermal calculation would normally block the operation.

REM615 provides an emergency-start function that can override the thermal restart restriction when plant operating conditions require it. The use of this function should be controlled through the motor protection philosophy because it allows the motor to operate under increased thermal risk.

Arc-Flash Protection

REM615 can be ordered with optional arc-fault protection using up to three light-detection channels.

Arc sensors may be installed in the:

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

The relay can combine the detected arc light with an overcurrent condition to provide fast tripping during an internal switchgear arc fault. Optional high-speed outputs can further reduce the overall tripping time.

Motor Temperature Monitoring

The optional RTD and mA module available with Configurations A and B provides:

• Six RTD inputs
• Two mA inputs
• Winding-temperature monitoring
• Bearing-temperature monitoring
• Alarm and trip operation from measured temperature
• Measurement of other analogue plant signals

The RTD inputs support selected platinum, nickel and copper resistance sensors. The mA inputs may also be used with suitable transmitters for temperature, pressure or other process measurements.

When requesting an ABB REM615 relay with RTD inputs, share the type and number of temperature sensors installed on the motor.

Control, Supervision and Recording

ABB REM615 can handle several functions inside the motor feeder panel, including:

• Circuit-breaker opening and closing
• Circuit-breaker position indication
• Disconnector control and indication
• Earthing-switch control and indication
• Motor emergency start
• Trip-circuit supervision
• Current-circuit supervision
• Fuse-failure supervision in voltage-based configurations
• Circuit-breaker condition monitoring
• Motor running-time monitoring
• Fault recording
• Event recording
• Disturbance recording
• Load-profile recording
• Local and remote operation

The relay logic, binary inputs, outputs, alarm LEDs and interlocking arrangement can be adapted through ABB PCM600 according to the motor feeder scheme.

Technical Specifications

• Brand: ABB
• Product family: Relion 615 Series
• Model: REM615
• Product type: Motor protection and control relay
• Motor type: Asynchronous motors
• Standard configurations: A, B, C and D
• Rated frequency: 50 or 60 Hz
• Current inputs: Conventional 0.2/1 A or 1/5 A inputs, depending on the ordered version
• Voltage inputs: 60–210 V AC in voltage-input configurations
• Sensor inputs: Current and voltage sensor inputs in Configuration D
• RTD inputs: Six, optionally available with Configurations A and B
• mA inputs: Two, optionally available with Configurations A and B
• Arc-sensor channels: Up to three with the selected arc-protection option
• Auxiliary supply, high range: 100–240 V AC or 48–250 V DC
• Auxiliary supply, low range: 24–60 V DC
• Operating temperature: –25°C to +55°C continuously
• 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 177 × 177 mm
• Case depth: Approximately 201 mm
• Complete relay weight: Approximately 4.1 kg
• Configuration software: ABB PCM600
• Installation: Withdrawable plug-in relay unit
• Protection standards: IEC 60255 series

The analogue channels, binary inputs, binary outputs, communication card and power-supply range depend on the complete REM615 ordering code.

Communication Options

ABB REM615 can be connected to SCADA, distributed control systems and substation automation systems.

Communication options cover:

• IEC 61850-8-1
• 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
• Copper Ethernet through RJ45
• Fibre Ethernet through LC connectors
• RS-232 and RS-485
• Serial fibre through ST connectors
• PRP Ethernet redundancy
• HSR Ethernet redundancy
• RSTP Ethernet ring
• IEEE 1588 time synchronisation
• SNTP and IRIG-B time synchronisation

Not every communication protocol or interface is included in every relay. The communication card must be checked from the complete order code.

Features

• Dedicated protection for asynchronous motors
• Four standard configurations for different motor feeder schemes
• Protection during starting and normal operation
• Motor thermal-condition calculation
• Start-up and locked-rotor supervision
• Protection against frequent motor starts
• Load-jam and loss-of-load protection
• Negative-sequence and phase-reversal protection
• Directional and non-directional earth-fault options
• Voltage and frequency protection in selected configurations
• Optional six-RTD and two-mA input module
• Optional three-channel arc-flash protection
• Emergency-start function for critical motor applications
• Circuit-breaker control and condition monitoring
• Fault, event and disturbance recording
• Power and energy measurement in selected configurations
• Conventional CT and VT input versions
• Sensor-input version for digital switchgear
• IEC 61850 and GOOSE communication
• Process-bus support in selected configurations
• Withdrawable plug-in relay design
• Local HMI and Web HMI access
• Configuration and engineering through ABB PCM600

Applications

ABB REM615 motor protection relays are used for:

• Medium-voltage induction motors
• Pump protection
• Compressor motor protection
• Conveyor motor protection
• Crusher and mill motor protection
• Fan and blower protection
• Cooling-tower motors
• Boiler-feed pumps
• Process-pump motors
• Water and wastewater pumping stations
• Circuit-breaker-controlled motors
• Contactor-controlled motors
• Motor control centres
• Industrial switchgear panels
• Captive power plants
• Utility auxiliary systems
• Motor feeders with RTD temperature sensors
• Motors requiring voltage and frequency protection
• Digital switchgear with current and voltage sensors
• Arc-flash-protected motor feeders
• New motor-control panels
• Existing REM615 replacement requirements

REM615 is commonly requested for motor protection in steel plants, cement plants, mining projects, oil and gas facilities, refineries, petrochemical plants, water-treatment plants, power stations, paper mills, chemical plants and large manufacturing units.

ABB REM615 Replacement and REX615 Migration

ABB identifies REX615 as the next-generation platform for its application-specific 615 and 620 series relays. The earlier relay naming used letters such as F for feeder, M for motor and T for transformer, while REX615 uses a configurable platform that can be adapted for several applications.

A REM615 replacement should not be selected only by matching the front-panel model name. Check the following before ordering:

• Complete REM615 order code
• Product and firmware version
• Standard configuration letter
• CT secondary rating
• VT secondary voltage
• Current or sensor-input arrangement
• Auxiliary supply
• Binary input voltage
• Binary input and output modules
• RTD and mA module
• Arc-protection option
• Communication card
• Communication protocol
• Existing PCM600 configuration
• IEC 61850 system files
• Panel cut-out and terminal arrangement

Depending on the existing installation and availability, the requirement may be met with a matching REM615 or a properly engineered REX615 configuration.

Buyers looking for an ABB REM615 motor protection relay supplier and exporter in India can contact us for pricing, availability, configuration checks, replacement requirements and export supply.