Description
ABB REM620A_F NAMBBABA33E5BNN1XF is a high-performance motor protection and control relay belonging to ABB Relief®620 series.This relay integrates multiple protection,control,measurement,and monitoring functions,designed specifically for various motor applications in medium voltage distribution systems.It can effectively protect and control power equipment such as generators,transformers,and motors,ensuring the safe and stable operation of the power system.
As an advanced digital protection relay,REM620A_F adopts a modular design with high flexibility and programmability.It can configure various protection functions according to specific application requirements,such as overcurrent,short circuit,ground fault,overheating,undervoltage,and overvoltage protection,and provide real-time equipment status and fault information through advanced diagnostic functions.It supports multiple communication protocols(including IEC 61850,Modbus RTU/TCP),making it easy to integrate with substation automation systems,SCADA systems,or other upper computer systems for remote monitoring and management.
The design of REM620A_F emphasizes reliability and ease of use,making it suitable for demanding industrial and power environments.It plays a crucial role in various industrial applications,such as drive systems,industrial automation,pump stations,wind power generation,etc.,helping users improve equipment availability,reduce maintenance costs,and enhance the efficiency and safety of the entire power system.

REM620A_F NAMBBABA33E5BNN1XF ABB
technical specifications
Product model:REM620A_F NAMBBABA33E5BNN1XF
Manufacturer:ABB
Product Type:Medium Voltage Motor Protection and Control Relay/Protection Relay
Series:ABB Relief®620 series
Main functions:Multi functional protection(overcurrent,short circuit,ground fault,overheating,loss of voltage,overvoltage,negative sequence,etc.),control,measurement,monitoring,event recording,fault recording,self diagnosis
Communication protocols:IEC 61850(including GOOSE),Modbus RTU,Modbus TCP,DNP3,IEC 60870-5-103(depending on specific configuration)
Input/Output:Flexible digital input/output,analog input(current/voltage transformer connection)
Human machine interface:local LCD display screen,buttons(providing local operations,parameter settings,event viewing)
Power supply:typically supports a wide range of AC/DC power supplies(such as 24-250 V AC/DC or 100-250 V AC/DC,depending on the model configuration)
Working temperature:-40°C to+70°C(depending on specific configuration and installation environment)
Protection level:The front panel is usually IP54 or IP65,and the rear panel is usually IP20(depending on the installation method)
Certification:CE mark,UL/cUL certification(depending on market and specific configuration),compliant with IEC 60255 series protection relay standards
Modular design:supports expansion modules such as I/O modules,communication modules,etc
Programming/configuration software:ABB PCM600(Protection and Control IED Manager)software
Typical power consumption:relatively low
Firmware Upgrade:Supports online firmware upgrade
Main features and advantages
ABB REM620A_F NAMBBABA33E5BNN1XF has significant advantages in the field of motor protection and control with its comprehensive functions and advanced technology:
Multi functional integrated protection:As a comprehensive protection relay,REM620A_F provides comprehensive protection against various types of faults such as overcurrent,short circuit,ground fault,negative sequence,overheating,undervoltage/overvoltage,loss of voltage,etc.This ensures the reliable operation of the motor and its related equipment,effectively avoiding equipment damage and unplanned shutdowns.
High flexibility and programmability:Through ABB’s PCM600 software,users can flexibly configure the parameters and functions of relays according to specific application scenarios and requirements,including protection characteristic curves,logic programming,and communication settings.This programmability enables relays to adapt to various complex distribution networks and motor applications.
Excellent communication capability:Supports the IEC 61850 standard,including GOOSE(General Object Oriented Inter Station Event)communication,enabling high-speed,real-time data exchange and interoperability between devices within the substation.In addition,it also supports protocols such as Modbus RTU/TCP,DNP3,etc.,making it easy to seamlessly integrate with SCADA systems,DCS,or other automation platforms.
Advanced monitoring and diagnosis:REM620A_F can monitor motor operating parameters in real time,record events and faults,and provide fault waveform recording function.These advanced diagnostic capabilities help operations personnel quickly locate faults,analyze causes,and support predictive maintenance strategies.
Modular and Scalable Design:Its modular structure allows for the configuration of different hardware modules(such as additional I/O modules,communication modules)as needed,providing flexible scalability.This enables relays to be upgraded and adjusted according to changes in system requirements,extending equipment lifespan.
Durable industrial design:REM620A_F is suitable for harsh industrial environments and can operate stably under a wide temperature range and high humidity conditions.Its high protection level(such as front panel IP54/IP65)ensures reliability in harsh environments.
Reduce operation and maintenance costs:By providing comprehensive protection,advanced diagnosis,and remote management capabilities,this relay helps reduce on-site maintenance needs,shorten troubleshooting time,and improve asset utilization,thereby reducing overall operating costs.

REM620A_F NAMBBABA33E5BNN1XF ABB
application area
ABB REM620A_F NAMBBABA33E5BNN1XF motor protection and control relay is widely used in medium voltage distribution networks and industrial fields,especially in scenarios that require reliable protection and precise control of motors:
Industrial drive system:Used in various industrial factories to protect and control large motors such as pumps,fans,compressors,grinders,conveyors,rolling mills,etc.,ensuring the continuity of the production process and the reliable operation of equipment.
Electricity generation:used in power plants(thermal power,hydropower,nuclear power,wind power)to protect and control plant electrical motors,such as boiler feedwater pump motors,induced draft fan motors,circulating water pump motors,etc.
Oil and gas industry:motors used to protect and control critical pumps,compressors,and other rotating equipment in refineries,petrochemical plants,natural gas processing plants,pipeline pumping stations,and offshore drilling platforms.
Water treatment and sewage treatment:used in pump stations and sewage treatment plants to protect and control water pumps and blower motors,ensuring effective management and treatment of water resources.
Mining:In mining and mineral processing,motors are used to protect and control large equipment such as crushers,mills,and conveyor belts.
HVAC system:Used in large commercial buildings and industrial facilities to protect and control the fan and water pump motors in central air conditioning systems.
Renewable energy:used in wind farms to protect and control the motor components of wind turbines and their connections to the grid.
Related products
The products related to ABB REM620A_F NAMBBABA33E5BNN1XF mainly include ABB Relion®Other relays and related software and communication equipment in the 620 series:
ABB Relion®620 series other relays:
REF620:Feedline protection and control relay.
RET620:Transformer protection and control relay.
REG620:Generator protection and control relays.
These relays typically share similar platforms and software tools,but have been functionally optimized for different applications.
ABB Relion®615 series relays,such as REF615,REM615,etc.,are typically suitable for smaller scale or less demanding applications.
ABB PCM600(Protection and Control IED Manager):an engineering tool software used for configuration,parameter setting,debugging,and data management of Relion series relays.
ABB RTU500 series or COM600 gateway:used for communication integration between relays and SCADA/DCS systems.
Current transformers(CTs)and voltage transformers(VTs):connected to relays,used to provide current and voltage signals required for measurement and protection.
Circuit breakers,contactors,and switchgear:Relays perform protection and control functions by controlling these devices.
ABB Ability™Ellipse Asset Performance Management(APM):A software platform for advanced asset management and predictive maintenance that integrates relay data.
Installation and maintenance
Preparation before installation:
Before installing ABB REM620A_F NAMBBABA33E5BNN1XF relay,be sure to carefully read ABB Release®620 series product manual,installation guide,and safety instructions.Ensure that the installation environment meets the temperature,humidity,and electromagnetic compatibility requirements of the relay.Before performing any electrical connection operation,be sure to disconnect the power supply of all relevant circuits and adopt appropriate locking/tagging procedures to prevent accidental power on.
Install the relay on a suitable control cabinet or panel,ensuring it is securely fixed and has sufficient space for wiring and heat dissipation.According to the system drawings,correctly connect the secondary side wiring of the current transformer(CT)and voltage transformer(VT)to the current/voltage input terminals of the relay.Connect digital input/output(DI/DO)wiring to the corresponding control circuit(such as circuit breaker trip/close coils,signal lights,etc.).Connect auxiliary power supply(such as 24-250 V AC/DC)and grounding wire.Finally,connect the communication cable(such as an Ethernet cable)to the communication port of the relay for communication with the upper computer system.
Maintenance suggestion:
To ensure the long-term stable operation of ABB REM620A_F NAMBBABA33E5BNN1XF relay and the reliability of the power system,it is recommended to perform regular maintenance:
Regular appearance inspection:Regularly inspect the appearance of the relay to ensure that there is no physical damage,loose wiring,or signs of corrosion.Keep the surface of the relay clean and avoid the accumulation of dust and pollutants.
Functional testing:Regularly conduct relay functional testing according to the factory testing plan or maintenance procedures,including protection function testing(such as simulating fault current through a secondary injection tester for trip testing),communication function testing,and digital input/output testing to ensure that all functions are functioning properly.
Parameter verification and backup:Regularly check whether the relay parameters are consistent with the system design through PCM600 software,and promptly backup the relay configuration data.Before making any parameter modifications,be sure to back up first.
Firmware update:According to ABB’s recommendations,regularly check and update the firmware of the relay to obtain the latest features,performance improvements,and safety patches.
Event and fault record analysis:Regularly download and analyze the event and fault waveform data of relays,which helps diagnose potential problems,optimize system performance,and provide a basis for troubleshooting.
Battery inspection:If there is a backup battery inside the relay(for real-time clock or event recording),please check its status regularly according to the manual recommendations and replace it if necessary.All complex testing,maintenance,or replacement operations should be carried out by qualified personnel who have received professional training from ABB.

REM620A_F NAMBBABA33E5BNN1XF ABB
Product Guarantee
ABB provides strict product assurance for REM620A_F NAMBBABA33E5BNN1XF motor protection and control relays.



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