ABB REF543 Feeder Protection Relay

Description

The ABB REF543 is a multifunctional feeder terminal designed for protection, control, measurement, and supervision of medium-voltage power distribution systems. It is part of ABB’s REF 54x series and supports flexible configuration for various feeder applications.

Specifications

• Model Number: REF543
• Product Type: Feeder protection relay
• Voltage Range: Medium-voltage distribution networks
• Protection Functions: Overcurrent, earth fault, phase unbalance, thermal overload
• Control Functions: Circuit breaker control, interlocking, auto-reclose
• Measurement Functions: Voltage, current, power, energy, frequency
• Communication Protocols: IEC 60870-5-103, SPA bus, Modbus
• Display: LCD with LED indicators
• Mounting: Panel flush-mount
• Configuration: PC-based tool for parameter setting and logic configuration
• Standards Compliance: IEC, ANSI, CE certified
• Lifecycle Status: Legacy product (support available via ABB tools)

Features

• Integrated Protection: Combines multiple protection elements in one compact unit
• Flexible Logic: Programmable logic for custom automation schemes
• Remote Communication: Supports SCADA integration via standard protocols
• Event Recording: Stores fault records, event logs, and disturbance data
• User-Friendly Interface: Menu-driven display with local/remote access
• Self-Supervision: Continuous internal diagnostics for reliability
• Legacy Compatibility: Designed for retrofit and upgrade in existing ABB systems
• Cybersecurity Ready: Supports secure communication and access control