Product Name:

ABB+REX521GHHGSH05G REX521GHHPSH51G

Product Description:

The ABB REX521 is an advanced relay protection and control device designed for use in substations and critical electrical installations. It is part of ABB’s robust line of protection relays aimed at ensuring the reliability, security, and performance of electrical networks. The REX521 series offers comprehensive solutions for the protection of generators, transformers, and lines, enhancing system performance through intelligent monitoring and control capabilities.

Product Parameters & Specifications:

• Type: Digital Protection Relay
• Voltage Rating: Typically supports a range of voltage inputs (e.g., 100-250V AC/DC)
• Frequency: 50/60 Hz
• Input Current: Support for multiple input current specifications, e.g., 1A or 5A secondary current inputs.
• Measurement Accuracy: High accuracy in measurements, generally within ±1%.
• Protection Functions:
  • Overcurrent Protection
  • Earth Fault Protection
  • Distance Protection
  • Differential Protection
  • Voltage Protection
  • Frequency Protection
• Communications:
  • IEC 61850 Compatible
  • Modbus RTU
  • Ethernet/IP capabilities
• Display: LCD or LED display for status and operational information
• Operating Temperature: -20°C to +55°C
• Size: Mounting dimensions typically fit within standard control cabinet requirements
• Power Supply: High reliability with dual power supply options

Product Use:

The ABB REX521 relay is designed for use in various applications such as:

• Substation Automation: Monitoring and control of electrical equipment in substations.
• Power Generation: Protection of generators against various fault conditions.
• Industrial Applications: Safeguarding industrial equipment and processes to ensure operations remain secure.
• Renewable Energy: Protection solutions for solar and wind energy generation systems.
• Distribution Networks: Enhancing reliability and operational safety in distribution networks.