ABB has introduced the REF543KB127AAAA feeder terminal, a high-performance device designed for the protection, control, measurement and supervision of medium voltage networks. It can be used with a variety of switchgear, including single-bus, dual-bus, and dual-machine systems, while supporting a variety of network types, such as neutral ungrounded networks, arc suppression coil grounded networks, and partially grounded networks.

REF543KB127AAAA feeder terminals not only provide traditional protection, measurement, control, condition monitoring and general functions, but also integrate a large number of PLC functions, enabling multiple automation and sequential logic control functions required for substation automation to be integrated in a single unit. In addition, the device supports multiple data communication standards, including SPA bus, LON Bus, IEC 60870-5-103, IEC 61850, Profibus DPV1, DNP 3.0 and Modbus, providing a flexible communication solution.

REF543KM127AAAA

This feeder terminal has 25 switching inputs and 18 outlet relays to meet complex control requirements. It also offers a variety of protection features, including non-directional and directional overcurrent and ground fault protection, residual voltage, overvoltage and undervoltage protection, thermal overload protection, CBFP and automatic reclosing. Control features include local and remote control of switch objects, status indication of switch objects and interlocking at bay and station levels.

The REF543KB127AAAA is designed with the needs of the industrial environment in mind, with high electromagnetic compatibility and stable operation in harsh industrial environments. Its compact structure, easy installation, powerful functions and flexible configuration options make it an important component in the field of industrial automation control.

The introduction of the ABB REF543KB127AAAA feeder terminal further expands ABB’s product line in the field of industrial automation. With its high performance, high reliability and flexible configuration options, the feeder terminal is expected to become an important component in medium voltage network protection, enabling enterprises to achieve more efficient and intelligent production processes.