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ABB REL561 1MRK002496-AC Relay

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Negotiable MOQ: 1 Piece (Price negotiable depending on order volume and customization)
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Material:
Other, Global universal model
Condition:
Other, Global universal model
Task:
Other, Global universal model
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Guizhou Yuanmiao Automation Equipment Co., Ltd.
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1Yr
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China
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Material Other, Global universal model
Condition Other, Global universal model
Task Other, Global universal model
Mathematical Model Other, Global universal model
Signal Other, Global universal model
Customized Non-Customized
Structure Other, Global universal model
Dimensions 190mm×210mm×150mm
Weight 3.5kg
Temperature -25°C~+70°C
REL561 1MRK002496-AC Digital Protection Relay
The REL561 belongs to ABB's Relion® series, a multi-functional digital protection relay for medium and low-voltage power systems, primarily used for protection and control of transformers, lines, motors, and capacitor banks. The model "1MRK002496-AC" is a standard configuration suitable for voltage levels from 3kV to 66kV, supporting applications in traditional and digital substations (IEC 61850), especially in industrial power distribution, commercial buildings, and distribution automation scenarios.
I. Technical Parameters and Functional Features1. Protection Functions
  • Primary Protection:
    ▶ Differential protection (transformer ratio differential, line current differential) with inrush current braking and harmonic braking to prevent maloperation from exciting inrush currents;
    ▶ Overcurrent protection (three-stage definite-time/inverse-time, supporting ground fault protection);
    ▶ Distance protection (three-stage phase-to-phase/ground distance, adapted for line protection);
    ▶ Overvoltage/undervoltage protection, frequency protection (overfrequency/underfrequency, supporting automatic generator tripping or load shedding).
  • Backup Protection:
    ▶ Overload protection, undervoltage blocking, circuit breaker failure protection;
    ▶ Thermal overload simulation (for motor protection, calculating winding temperature trends).
  • Auxiliary Functions:
    ▶ Reclosing control (single reclosing, supporting no-voltage/synchronism verification);
    ▶ Anti-islanding protection (suitable for photovoltaic grid-connected scenarios);
    ▶ Transformer oil temperature monitoring (requires external temperature sensor).
2. Measurement and Metering

  • Real-time monitoring of three-phase voltage, current, active/reactive power, frequency, power factor, and harmonics (2nd-13th order) with ±0.5% measurement accuracy;

  • Supports electrical energy metering (compliant with IEC 62053-22) with a resolution of 0.01kWh;

  • Fault recording: Records 10 cycles before and after faults at a sampling rate of 2000Hz, supporting COMTRADE format export.

3. Communication Interfaces

  • 2× Ethernet ports (supporting IEC 61850-3, Modbus TCP, EtherNet/IP);

  • 2× RS-485 serial ports (Modbus RTU, IEC 60870-5-103);

  • GOOSE/SMV message transmission (adapted for digital substations);

  • Supports optical fiber interface (optional) and IEEE 1588 time synchronization (synchronization accuracy ≤1ms).

4. Power Supply and Physical Characteristics

  • Power supply: 110-240V AC or 110-220V DC, power consumption ≤30W, supporting dual-power redundancy;

  • Dimensions: 190mm×210mm×150mm (19-inch rack mounting), weight ~3.5kg;

  • Protection class: IP20 (panel), supporting rail or panel mounting.

5. Operating Environment

  • Temperature: -25°C~+70°C (wide-temperature design), humidity: 5%~95% (non-condensing);

  • Vibration/impact resistance complies with IEC 60068 standards, EMC class complies with IEC 61000-6-5.

REL561 1MRK002496-AC (2)

REL561 1MRK002496-AC (1)

II. Core Functional HighlightsMulti-Scenario Adaptive Protection

  • For transformer protection: Integrates differential protection, gas protection (external connection required), and over-excitation protection, supporting automatic Y/Δ wiring compensation;

  • For motor protection: Provides stall protection, phase loss protection, phase sequence protection, and thermal overload inverse-time characteristics to prevent equipment burnout;

  • For line protection: Supports distance protection combined with directional elements for rapid fault zone localization.

Digitalization and Intelligent Communication

  • Fully supports the IEC 61850 communication protocol, enabling seamless docking with Merging Units (MUs) and Smart Terminals (STs);

  • GOOSE fast tripping response time ≤2ms to meet rapid fault clearance requirements;

  • Enables real-time interaction with SCADA systems to upload fault records and operational status data.

Human-Machine Interaction and Debugging Convenience

  • Front panel equipped with a 4.3-inch color touchscreen, supporting real-time data display, protection setting modification, and event query (stores ≥1,000 events);

  • Graphical programming via ABB Relion® configuration tools (e.g., Relion 600 Series Manager), supporting custom logic blocks (e.g., ladder diagrams, function block diagrams).

Reliability Design

  • Dual-CPU redundant architecture with dual verification of key circuits to prevent misoperation and refusal to act;

  • Built-in self-checking functions (CPU, memory, communication link monitoring), supporting regular self-tests, compliant with IEC 61508 functional safety standards;

  • Electromagnetic interference protection design adapts to strong interference environments in industrial fields.

III. Application Fields

  • Power Systems: Transformer protection, line protection, and capacitor bank protection in 3kV~66kV substations;

  • Industrial Scenarios: Motor protection (e.g., fans, pumps) and high-voltage cabinet protection in metallurgy, petrochemicals, mining, etc.;

  • Renewable Energy: Grid-connected line protection and anti-islanding control for photovoltaic power plants and wind farms;

  • Commercial & Buildings: Transformer protection and medium-voltage line protection in large Park power distribution systems to enhance power supply reliability.

IV. Comparison with Series Products
Model REL561 1MRK002496-AC REC650 (Capacitor Bank Dedicated) RET670 (Line Dedicated)
Core Positioning Universal protection for transformers/lines/motors Dedicated capacitor bank protection Transmission line & distribution feeder protection
Main Protection Differential, distance, overcurrent Unbalance, harmonic protection Distance, current differential
Voltage Level 3kV~66kV 6kV~72.5kV 3kV~220kV
Typical Applications Main transformers, motors, medium-voltage lines Shunt capacitor banks, filter devices Transmission lines, distribution automation
Unique Features Thermal overload simulation, anti-islanding protection Discharge time monitoring, automatic switching control Fault localization, reclosing synchronism verification
V. Typical Configurations and NetworkingTraditional Substation Mode

  • Connects CT/PT, circuit breakers, and switching value inputs (e.g., disconnector positions) via hardwiring to realize protection functions.

Digital Substation Mode

  • Accesses MU via optical fiber to receive sampled values (SMV), controls circuit breaker tripping via GOOSE messages, and communicates with the substation control layer system.

System Integration

  • Docks with ABB Ability™ smart grid management systems to enable equipment condition monitoring (e.g., transformer oil temperature trends, motor start count statistics) and intelligent operation and maintenance.

Product Tags: REL561 , RED521 , REL551

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Guizhou Yuanmiao Automation Equipment Co., Ltd.
Gold Verified Supplier
1Yr
Verified Business License
Business Type
Trading Company
Year Established
2014
Factory Size
1,000-3,000 square meters
Product Certifications
SA8000
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