ABB RET650 1MRK008516-BA Transformer Protection Device

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Product Model

ABB RET650 1MRK008516-BA Transformer Protection Device

Product Overview

The ABB RET650 is an advanced digital transformer protection device designed for medium and large power transformers in distribution and generation substations. It integrates overcurrent, differential, earth fault, overload, overvoltage, undervoltage, and other comprehensive protection functions, along with automatic control, fault recording, and remote monitoring. RET650 ensures high-reliability protection, enhances transformer safety and system stability, and facilitates system integration and intelligent operation and maintenance.

Technical Specifications

• Model: RET650

• Order Code: 1MRK008516-BA

• Type: Digital Transformer Protection Device

• Current Input: 1 A / 5 A (rated on CT side)

• Voltage Input: 57.7–600 V AC/DC

• Protection Functions: Differential, overcurrent, earth fault, overload, overvoltage/undervoltage protection

• Control Outputs: Relay contacts for tripping, alarms, and remote control

• Communication Interfaces: IEC 61850, Modbus RTU, DNP3, Profibus (optional)

• Sampling Rate: 16 kHz high-speed sampling

• Operating Time: < 20 ms (differential protection)

• Operating Temperature: –25 °C … +70 °C

• Protection Class: IP54 (front), IP20 (rear)

• Power Supply: 110–240 V AC/DC

• Certifications: IEC 60255, IEC 61850, CE

Advantages & Key Features

1. Comprehensive protection: Integrated protection functions ensure safe transformer operation.

2. High-speed differential protection: Rapid response enhances system stability and safety.

3. Intelligent control and remote monitoring: Supports automatic tripping, alarms, event logging, and remote operation.

4. Multi-protocol communication: IEC 61850, Modbus RTU, DNP3, Profibus for easy automation system integration.

5. Data logging and event analysis: Records fault events and operational parameters for maintenance support.

6. Industrial-grade design: Temperature and vibration resistant, suitable for harsh environments.

Application Areas

• Medium and large power transformer protection and control

• Distribution and generation substations

• Transmission and distribution line monitoring and management

• Transformer management in renewable energy grids

• Industrial large transformer protection systems

Precautions

1. Verify relay current, voltage, and protection configuration match system requirements before installation.

2. Follow ABB manuals strictly for wiring and configuration to prevent false operations.

3. Ensure installation environment is dry, ventilated, and free from dust and high temperature.

4. Regularly check relay status, event logs, and communication interfaces for reliable operation.

5. Avoid frequent false operations or exceeding rated parameters to extend device life.

The structure and details of the product：

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