The ABB REF541 series is a range of protection relays designed for use in substations and industrial applications.

Product Name

ABB REF541KM118AAAA Protection Relay

Product Description

The ABB REF541KM118AAAA is an advanced protection relay that is primarily used for the protection, control, and monitoring of power transformers, as well as for overhead lines and other electrical equipment. It is designed to ensure reliable operation in medium and high voltage applications.

Product Parameters

• Type: Digital Protection Relay
• Application: Transformer protection, feeder protection
• Mounting Type: Panel mount
• Communication Protocols: Support for various communication protocols such as IEC 61850, Modbus
• Power Supply: Typically operates on a wide range of voltages

Specifications

• Inputs:
  • Current Inputs: Multiple CT inputs for phase and ground current measurement
  • Voltage Inputs: Voltage measurement for phase voltages and neutral
• Outputs:
  • Relay Outputs: Configurable binary outputs for alarms or switch control
  • Analog Outputs: For monitoring and control purposes (if equipped)
• Protection Functions:
  • Overcurrent protection (IEC 60255-151)
  • Earth fault protection
  • Transformer differential protection
  • Voltage protection
  • Frequency protection
  • Over/under voltage control
• Display:
  • LCD display for real-time data visualization, settings, and diagnostics
• Dimensions: Standard rack or panel dimensions
• Temperature Range: Typically -20°C to +55°C
• Standards Compliance: Complies with international standards like IEC 60255 and relevant safety standards.

Product Use

The ABB REF541KM118AAAA relay is utilized in various applications, including:

• Protection of Power Transformers: Preventing damage due to faults, overloads, or electrical disturbances.
• Feeder Protection: Safeguarding distribution lines against electrical faults.
• Control of Electrical Equipment: Enabling automatic or manual control of various electrical apparatus.
• Data Monitoring and Diagnostics: Collecting operational data for maintenance and optimization of electrical systems.
• Integration with SCADA Systems: Facilitating communication and control through modern digital communication protocols.