Description
ABB REX521GHHGSH51G
Technical Specifications:
- Product Family: Relion 500 Series.
- Communication: IEC 61850, IEC 60870-5-103, Modbus.
- Protection: Multi-stage overcurrent, directional earth fault, and cable thermal overload.
Functional Features:
- Cable Protection: Advanced thermal modeling to prevent cable insulation degradation.
- Fault Location: Accurate fault distance calculation for rapid repair.
- Flexible Logic: Extensive programmable logic for custom control schemes.
Application Scenarios:
- Urban distribution networks.
- Industrial plant substations.
- Cable-fed distribution systems.
Material Composition & Structural Characteristics:
- Modular I/O: Customizable input/output configuration.
- High-Resolution Display: Detailed local data visualization.
Working Principle:
Processes voltage and current signals to detect faults. The thermal overload function uses a dynamic model based on actual load current and ambient temperature to protect cables.
Installation Requirements:
- Configure the cable parameters (length, cross-section, insulation type) accurately for thermal protection.
- Integrate with the substation SCADA via IEC 61850.
Usage Precautions:
- Validate fault location algorithms with known fault simulations.
- Keep firmware and configuration backups.
