Description

Technical Specifications

• Product Model: ABB REB670 1MRK002820-AC
• Brand: ABB
• Warranty: One Year Full Coverage Warranty
• Working Voltage: 24–265 V AC/DC Universal Power Supply
• Working Temperature: -40°C to 70°C
• Storage Condition: -50°C to 85°C, Non-condensing Humidity
• Interface Type: Separate terminal blocks, IEC 61850 / IEC 60870-5-103 communication interface
• Anti-interference Level: Industrial EMC Anti-interference Standard

Product Overview

The ABB REB670 1MRK002820-AC busbar protection IED belongs to ABB Relion 670 series. It adopts biased differential protection principle for substation busbar fault protection, delivering ultra-fast tripping response for internal bus faults. It supports single bus, double bus and one-and-half breaker substation layouts, equipped with CT circuit monitoring and breaker failure backup protection. Built for continuous reliable operation in power substations, this unit addresses protection failure and system risks caused by aged or faulty original relays. Manufactured to strict industrial specifications and fully tested, it acts as a reliable replacement part for power system maintenance and fault repair in medium and high voltage automation projects.

Core Application Advantages

• Low Failure Rate Operation: Constructed with industrial-grade materials and circuitry, delivering strong stability and durability to cut recurring maintenance expenses.
• Fast Fault Recovery: Standard rack mounting design enables quick installation and removal. Engineers can finish system repairs rapidly to minimize power outage losses.
• Wide System Compatibility: Fully compatible with the original ABB Relion 670 protection architecture. No complex program adjustments needed after installation, bringing zero adaptation cost.

Typical Application Cases

• Industrial System Emergency Maintenance: Emergency replacement of defective busbar protection IEDs in power substations to quickly restore bus differential protection.
• Long-term Spare Part Reserve: Kept as regular inventory for power plants and grid substations, easing procurement bottlenecks and long lead times of original imported spare parts.
• Automation System Upgrade: Matches legacy and new substation control systems during power grid reconstruction and substation intelligent transformation.