Protection Feeder Terminal REF 543 ABB for Power Systems
Description
Protection Feeder Terminal REF 543 is a multi-functional feeder terminal unit designed by ABB for medium voltage power systems, integrating protection, control, measurement, and supervision capabilities for switchgear, three-phase asynchronous motors, and shunt capacitor banks.
| Specification | Value |
|---|---|
| Protection Rating | IP20 |
| Operating Temperature Range | -20 to 60 degrees Celsius |
| Power Supply | DC 24V/48V redundant input, power consumption below 15W |
| I/O Configuration | 25 digital inputs, 18 output relays, 2 Ethernet ports, 1 USB debug port |
| EMC Compliance | IEC 61000-4 standard |
Key Features:
- Real-time status monitoring and visualization via LCD display, with high-precision sensor interfaces for voltage, current, and power factor collection
- Built-in fault recording function that stores up to 100 fault events, with waveform playback and export capabilities
- Supports mainstream communication protocols including IEC 60870-5-103, IEC 61850, and Modbus TCP, with dual Ethernet ports for redundant communication
- Integrates over 20 protection algorithms, plus PLC programmable functions with ladder diagram and structured text programming support
Applications:
- Medium voltage power distribution systems (10kV/35kV) for feeder automation, fault location, and isolation
- Industrial automation sectors like petrochemical, metallurgy, and mining for critical equipment monitoring
- New energy grid integration for wind and solar power collection line protection
- Infrastructure such as railway traction power systems and airport power networks
Related Models:
- REF 541
- REF 545
- REF543KM129AAAB