ABB REG670 1MRK002826-AA Protection Relay

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1. Product Overview

The ABB REG670 1MRK002826-AA is a high-performance digital multifunction protection relay designed for transmission, distribution, and industrial power systems. It provides protection for transformers, lines, and busbars, integrating advanced measurement, control, automation, and communication functions. Enables fast fault detection, selective protection, and remote monitoring to ensure safe, stable, and efficient power system operation.

2. Technical Specifications

• Model: REG670 / 1MRK002826-AA

• Type: Digital Protection Relay

• Applications: Transmission lines, distribution lines, transformers, busbars

• Measurement Inputs: Current Transformer (CT) / Voltage Transformer (VT)

• Rated Current: 5 A (CT input standard)

• Rated Voltage: 100–240 V AC/DC

• Protection Functions: Overcurrent, distance, differential, overvoltage, undervoltage, directional, frequency protection, etc.

• Control Outputs: Configurable digital relay outputs for alarms, tripping, remote control

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

• Display & Operation: LCD screen + keypad

• Sampling Rate: Up to 32 samples per cycle

• Trip Time: Millisecond-level fast response

• Operating Temperature: ‑20 °C to +60 °C

• Protection Rating: IP52 front panel

• Dimensions (H×W×D): 144 × 144 × 200 mm

• Standards: IEC 60255, IEC 61850, CE

3. Key Advantages & Features

1. Multifunction Protection – Supports line, transformer, and busbar protection.

2. Fast Fault Response – Millisecond-level tripping for selective protection.

3. Digital Monitoring & Communication – IEC 61850, Modbus, and other protocols for SCADA integration.

4. High-Precision Measurement – Accurate current, voltage, power, and frequency measurement.

5. Modular Design – Easy installation, maintenance, and upgrade.

6. Industrial Environment Adaptability – Wide operating temperature and protection rating.

4. Typical Applications

• Transmission line protection and monitoring

• Distribution line protection and automation

• Transformer differential and overload protection

• Busbar and branch circuit protection

• Industrial plant power systems and energy management

• Integration with SCADA and power automation systems

5. Installation & Usage Notes

1. Power Matching – Ensure rated voltage matches the supply system.

2. Proper Wiring – Connect CTs, VTs, relay outputs, and communication interfaces as per the manual.

3. Environmental Conditions – Avoid high humidity, dust, and corrosive environments.

4. Regular Calibration & Testing – Periodically test relay operation, calibration, and communications.

5. Secure Mounting – Ensure relay is firmly fixed to prevent vibration affecting measurement accuracy and reliability.