Tag: Abb 1MRS050643

Description:​​

The ABB​​1MRS050643 A2B43420​​is a comprehensive protection relay module designed for electrical power system applications.This advanced relay provides reliable protection for generators,transformers,and distribution networks in utility and industrial environments.

​​Application Scenarios:​​

In a large industrial facility’s main distribution substation,the ABB​​1MRS050643 A2B43420​​relay protected a critical 20MVA transformer feeding production lines.During a through-fault event caused by downstream equipment failure,the relay’s differential protection operated within 25ms,isolating the transformer while allowing healthy circuits to continue operation.The precise fault recording capabilities provided detailed analysis data that helped identify the root cause,reducing troubleshooting time by 60%.

​​Parameter:​​

Main Parameters

Value/Description

​​Product Model​​

​​1MRS050643 A2B43420​​

​​Manufacturer​​

ABB

​​Product Category​​

Protection Relay

​​Rated Current​​

5A(1A optional)

​​Rated Voltage​​

110-240V AC/DC

​​Frequency​​

50/60Hz

​​Protection Functions​​

Overcurrent,Differential,Earth Fault

​​Communication​​

Ethernet,RS-485

​​Protocols​​

IEC 61850,Modbus TCP

​​Fault Records​​

100+events with oscillography

​​Operating Temperature​​

-25°C to+70°C

​​Mounting​​

Panel or DIN rail

​​Display​​

LCD with intuitive interface

​​Certifications​​

IEC 60255,UL 1053

​​Technical Principles and Innovative Values:​​

Innovation Point 1:The ABB​​1MRS050643 A2B43420​​incorporates advanced algorithm processing that enables simultaneous execution of multiple protection functions without compromising speed or accuracy.The relay’s digital signal processing technology provides harmonic restraint capability,ensuring stability during transformer energization while maintaining sensitivity for internal faults.

Innovation Point 2:Dual-redundant communication ports with protocol conversion capability allow seamless integration between legacy SCADA systems and modern IEC 61850-based architectures.The relay’s configurable logic allows custom protection schemes without additional hardware.

Innovation Point 3:Comprehensive self-monitoring features include continuous watchdog timer checks,memory tests,and analog input verification.The relay automatically reports health status and can initiate predefined safety actions when internal faults are detected.

​​Application Cases and Industry Value:​​

Case Study:Industrial Power Plant Protection

A cogeneration plant implemented ABB​​1MRS050643 A2B43420​​relays for generator and transformer protection.During a grid disturbance,the relays maintained stable operation while correctly identifying and isolating a stator ground fault.The event recording capabilities provided clear sequence-of-events analysis,helping operators restore power within 30 minutes instead of the typical 4-hour outage.This resulted in approximately$50,000 savings in lost production time.

​​Related Product Combination Solutions:​​

​​1MRS050644​​:Enhanced communication version

​​A2B43421​​:Higher current rating model

​​CM-URE​​:Universal relay extension

​​REC615​​:Feeder protection relay

​​RET615​​:Transformer protection relay

​​COM600​​:Communication gateway

​​RER615​​:Overcurrent protection relay

​​Installation,Maintenance,and Full-Cycle Support:​​

Installation and Maintenance:The ABB​​1MRS050643 A2B43420​​features flexible mounting options with clear terminal identification for straightforward wiring.Installation requires proper CT/VT connections and communication cable routing.Configuration uses ABB’s PCM600 software for efficient setting management.

Routine maintenance includes annual functional testing and five-year calibration verification.The relay’s front-face USB port enables easy setting transfers and event record extraction without panel opening.

We provide comprehensive technical support for the ABB​​1MRS050643 A2B43420​​,including installation guidance,setting calculations,and troubleshooting.Our inventory includes genuine relays with full testing documentation.

Contact us for complete protection solutions and expert technical support tailored to your specific application requirements.

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