ABB RET670 1MRK002816-AC Transformer Protection Relay

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• Product Overview

  The ABB RET670 1MRK002816-AC is a high-performance digital transformer protection relay, designed for the protection and monitoring of power transformers and their auxiliary equipment. It integrates advanced digital protection algorithms, providing differential, overcurrent, over/under voltage, overtemperature, and low oil level protection. The relay enables real-time monitoring of transformer conditions and rapid fault isolation, enhancing reliability and safety of power systems.

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  Technical Specifications

  • Model: RET670

  • ABB Part Number: 1MRK002816-AC

  • Type: Digital Transformer Protection Relay

  • Supply Voltage: 24–60 V DC / 110–240 V AC

  • Analog Inputs: Current, transformer temperature, voltage

  • Digital Inputs/Outputs: Multiple relay outputs and status inputs

  • Communication Interfaces: IEC 61850, Modbus, Profibus

  • Protection Functions: Differential protection, overcurrent, over/under voltage, overtemperature, low oil level alarm

  • Display: LCD Human-Machine Interface

  • Operating Temperature: -25°C to +70°C

  • Protection Class: IP20

  • Mounting: Panel or cabinet mounting

  • Standards & Certifications: IEC 60255, CE

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  Features & Advantages

  • High-precision protection for multiple transformer fault types using advanced digital algorithms

  • Multi-functional integration: differential, overcurrent, over/under voltage, overtemperature, and oil level monitoring

  • Fast response for real-time monitoring and system safety

  • Industrial-grade reliability suitable for harsh power system environments

  • Intelligent communication: supports IEC 61850, Modbus, and other protocols for remote monitoring and integration

  • User-friendly LCD interface for easy operation and parameter configuration

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  Application Areas

  • Power substation transformer protection

  • Industrial and large-scale transformer monitoring

  • Distribution systems and power networks

  • Hydroelectric, thermal, and nuclear transformer protection

  • Energy management and smart grid systems

  • Industrial automation and high-reliability power systems

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  Precautions

   

  • Ensure supply voltage matches the system before installation

  • Perform wiring and maintenance only in a de-energized state

  • Avoid high humidity, corrosive, and strong electromagnetic interference environments

  • Regularly inspect communication interfaces and protection status

  • Follow the manual’s environmental and rated parameters for long-term reliable operation

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The structure and details of the product：

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