The ABB REF543K is a digital relay used primarily for protection and control of electrical power systems, particularly in medium-voltage applications.

Product Name:

ABB+REF543KB127AAAA

Product Description:

The ABB REF543K is a comprehensive protection, control, and monitoring relay designed for the protection of medium-voltage power transformers, feeders, and generator applications. This device offers advanced functionalities, including protection algorithms, communication capabilities, and flexibility for various configurations.

Product Parameters and Specifications:

1. Protection Functions:
   • Overcurrent protection (IEC 60255-3)
   • Earth fault protection
   • Differential protection
   • Voltage protection
   • Frequency protection
2. Communication Interfaces:
   • IEC 61850 standard for communication
   • Optional serial communication (MODBUS, DNP3)
   • Ethernet port for remote monitoring and control
3. Power Supply:
   • Operating voltage: Typically 100-240 V AC or 24-48 V DC
4. Display and User Interface:
   • LCD display for real-time monitoring
   • LED indicators for operational status
   • Front-panel keypad for manual settings
5. Environmental Conditions:
   • Temperature Range: -25°C to +55°C (depending on model)
   • Humidity: Up to 95% (non-condensing)
6. Mounting:
   • Panel mounting options available
7. Size and Weight:
   • Compact design, typically suitable for standard control cabinets

Product Use:

The ABB REF543K controller is primarily used in medium-voltage electrical systems for the following applications:

• Protection of feeder lines and distribution transformers.
• Monitoring and control of energy distribution networks.
• Providing real-time data for system performance and fault conditions.
• Integrated monitoring for substations and industrial applications.