ABB

Product Background

R&D Background

ABB developed the Relion® 620 series numerical protection relays for industrial and power‑system automation. REM620 is the specialized motor‑management device for medium‑to‑large‑capacity motors, designed to replace traditional electromechanical relays. It combines comprehensive motor‑fault protection, local control, real‑time measurement, and modern substation‑level communication capabilities.

Hardware highlights:

• Withdrawable plug‑in design, easy for installation, testing and maintenanceABB Group
• Large graphical LCD display, local keypad operation; web‑based HMI for remote configuration and monitoring
• Up to 14 RTD temperature input channels for motor winding temperature monitoring; optional arc‑flash detection function
• Native support for IEC 61850 (including HSR/PRP redundancy, GOOSE), Modbus‑RTU, DNP3, IEC 60870‑5‑103 protocols; IEEE 1588 time synchronizationABB Group
• High‑speed trip output (<1 ms), configurable protection setting groups for different operating conditions

Current Status REM620 is in active production, brand‑new original units are available. Refurbished and used spare units are also supplied for existing plant retrofits and replacementsABB Group.

ABB REM620 MOTOR PROTECTION CONTROL RELAY

Core Functions

Note: REM620 is a motor protection and control IED. It monitors motor current, voltage, temperature, executes protection logic, sends trip commands to circuit breakers, and communicates with DCS/SCADA systems.More products: www.plcva.com

1. Comprehensive motor protection functions Covers full‑range protection for motor startup and normal operation: motor differential protection, thermal overload protection, locked‑rotor (stall) protection, startup‑time supervision, frequent‑start protection, directional / non‑directional earth‑fault protection, negative‑sequence unbalance protection, backup over‑current protection, loss‑of‑load supervision, reverse‑rotation protection, undervoltage, over‑/under‑frequency protection. Supports emergency forced‑start function for hot‑motor restart scenarios.
2. Motor condition supervision & temperature monitoring Accepts RTD resistance‑temperature detector signals for stator/rotor winding temperature monitoring; accepts 4‑20 mA analog inputs for auxiliary process signals. Provides alarm or trip actions based on temperature and process thresholds.
3. Local motor control & interlock logic Local start/stop control for motor circuit breaker; programmable digital inputs and relay outputs for interlock logic; can execute breaker tripping on fault conditions to isolate faulty motors quickly.
4. Fault recording, event logging & measurement Records fault waveforms, event logs and fault records; real‑time measurement of motor current, voltage, power, power factor, frequency. Supports local display and remote data upload to plant control systemsABB Group.
5. Optional arc‑flash protection Optional arc‑flash detection channels for metal‑clad switchgear, to quickly trip in case of internal arc‑flash faults, improving personnel safety and limiting equipment damage.
6. Multi‑protocol system communication Native IEC 61850 for substation automation; Modbus‑RTU, DNP3, IEC 60870‑5‑103 for integration with DCS, SCADA and plant‑level control systems; supports time synchronizationABB Group.

ABB REM620 MOTOR PROTECTION CONTROL RELAY

Hardware Interfaces

• Current / voltage input terminals (connect to CT/VT instrument transformers)
• RTD temperature input terminals (for motor winding temperature sensors)
• Digital input / relay output terminals for control and interlock
• Communication ports for IEC 61850, Modbus and other field‑bus protocols
• Front‑panel LCD graphic display and operation keypad
• Withdrawable plug‑in base for switch‑cabinet installation

Main Applications & Deployment Sites

Core Application: Complete protection, control, measurement and supervision for medium‑large asynchronous and synchronous motors in industrial and power‑plant installationsABB Group.

1. Thermal & Hydro Power Plants Protection and control for large auxiliary motors: boiler feed‑water pumps, forced‑draft fans, induced‑draft fans, condensate pumps, cooling‑water pumps, other high‑power motor drives in power‑plant auxiliary systems.
2. Oil & Gas, Petrochemical & Refineries Protection for large compressors, pipeline pumps, process‑pump and fan motors; suitable for hazardous‑area industrial environments.
3. Mining Industry High‑power motors for mine hoists, belt conveyors, crushers, slurry pumps and ventilation fans; withstands harsh dusty and voltage‑fluctuation environments.
4. Cement, Pulp & Paper, Metallurgy Heavy‑Industry Mill drives, kiln motors, large‑capacity fans and pumps for continuous heavy‑duty production lines.
5. Water‑supply & Waste‑water Treatment Plants Large‑scale pump‑station motor protection, for water‑supply and sewage‑treatment pumping units, supports unattended operation.
6. General manufacturing plants Heavy‑duty industrial motors in chemical, food‑processing and other process industries.

Key distinction summary for reference:

• REM620: Motor protection‑control IED, for medium‑large motor fault protection and control.
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• CMA121: SYNPOL‑D rack power‑supply card.
• DSAI130A: DCS analog‑input I/O board, field‑signal acquisition.
• UFC911B101: Medium‑voltage‑drive main‑control CPU board.
• KU C720 AE01: ACS1000 drive EPS power‑supply PCB board.
• UBC717AE01: Medium‑voltage‑drive auxiliary signal‑conditioning interface PCB board.
• PFTL101B‑20KN: Pressductor tension load‑cell sensor for web‑strip tension measurement.

Understand the lowest price, please contact via email: plcvarious@foxmail.com

More products: www.plcva.com

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