ABB REJ601 BD446NN1XG

Processor: High-performance 32-bit DSP + ARM dual-core architecture for rapid signal processing.
Sampling System: 16-bit ADC with 64 samples per cycle for precise measurement.
Current Inputs: Standard 1A or 5A CT inputs, with support for Rogowski coil sensors for enhanced flexibility.
Voltage Inputs: Optional voltage measurement for advanced protection functions.
Communication: Supports Modbus RTU and IEC 60870-5-103 protocols for seamless integration into SCADA/DCS networks.
Power Supply: Universal 24-265 V AC/DC for global compatibility.
Mechanical Design: 1/2 frame width, front-wiring design for space-saving installation in compact switchgear.

Category: ABB

Description

Functional Features

Protection Functions:
- Three-stage overcurrent protection (phase and earth).
- Two-stage earth fault protection with optional inverse definite minimum time (IDMT) or definite time (DT) characteristics.
- Thermal overload protection for feeders, cables, and transformers.
- Negative-sequence overcurrent protection for unbalanced conditions.
- Phase discontinuity and breaker failure protection.
- Auto-recloser function for overhead line applications (up to four attempts).
Monitoring and Control:
- Continuous measurement of phase and earth currents.
- Event logging with 100 entries and five analog fault records for post-fault analysis.
- Local HMI with multi-language support for easy configuration and operation.
- Binary input/output (I/O) configurable for various functions (e.g., protection tripping, alarm signaling).
Diagnostics and Maintenance:
- Self-supervision of hardware and software for enhanced reliability.
- Non-volatile memory for storing settings and fault records.
- Front USB port for easy upload of fault data and firmware updates.

Application Scenarios

Power Distribution Networks: Protects overhead lines and cable feeders in medium-voltage substations from short circuits, overloads, and earth faults.
Industrial Systems: Safeguards critical equipment in manufacturing plants, ensuring uninterrupted operation and minimizing downtime.
Renewable Energy: Integrates into solar and wind farms for reliable grid connection and protection against abnormal conditions.
Infrastructure Projects: Used in smart grid deployments, railway electrification, and water treatment facilities for robust power system control.

Key Advantages

Compact and Flexible: Small footprint and modular design simplify installation in existing or new switchgear.
High Performance: Fast processing and accurate measurements ensure reliable protection even in demanding environments.
Easy Configuration: Pre-configured settings and intuitive HMI reduce commissioning time and operational complexity.
Global Standards Compliance: Meets IEC 61850, IEC 60255, and other international standards for interoperability and safety.

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