ABB Feeder Terminal REF 545 (REF545 )

Scope

• Feeder protection relay

Product Benefits

• Protection functions for many different types of power networks

• Programmable logic functions (PLC)

• Wide support for different communication protocols

• Optical communication for fast, disturbance-free communication

Product Features

• Voltage and current measurement via conventional measuring transformers or current sensors and voltage dividers

• Fault locator for short circuits in all kinds of network

• Support for IEC 61850 protocol through the SPA-ZC 400 adapter

• 34 binary inputs and 26 output relays

Application Areas

• Can be used with different kinds of switchgear, including single busbar, double busbar and duplex systems

• Protection functions support isolated neutral networks, resonant-earthed networks and partially earthed networks

• Suitable for medium-sized three-phase asynchronous motors

• Protection and control of shunt capacitor banks used for reactive power compensation

Data Communication

• SPA bus

• LON bus

• IEC 60870-5-103

• IEC 61850 via SPA-ZC 400

• Profibus DPV1 via SPA-ZC 302

• DNP 3.0

• Modbus communication with higher level equipment

• LON communication together with PLC functions minimizes hardwiring between feeder terminals