ABB’s REF545KB133AAAA is a feeder terminal for medium voltage networks that provides protection, control, measurement and monitoring. It is suitable for a variety of main wiring modes, including single bus, double bus and double switch wiring, and supports different types of power grids, such as neutral ungrounded systems, resonant grounded systems and small resistance grounded systems. The REF545KB133AAAA feeder terminal can also be applied to the protection and control of three-phase asynchronous motors and reactive compensation shunt capacitor banks, providing comprehensive PLC logic programmable functions to realize the automation functions required for substation integrated automation systems and sequential logic control functions integrated into one unit.

The REF545KB133AAAA feeder terminal uses digital signal processing technology to quickly and accurately detect feeder faults and achieve rapid fault removal to ensure stable operation of the power system. In addition, the device is unique in terms of pulse width modulation (PWM) analysis, supporting a user-defined option to assign arbitrary voltage to the phase winding, allowing digital twinning or model calibration based on measurements imported directly from the dynamometer or other sources.

REF543KM127AAAA

The REF545KB133AAAA feeder terminal design also includes rotors using Halbach array mode, with even and odd-numbered magnet segments per pole, helping to reduce rotor mass and improve overall performance. The terminal’s communication capabilities support a variety of communication standards, such as the SPA bus, LON bus, IEC 60870-5-103 protocol, reducing the need for hard wiring between feeder terminals.

ABB’s REF545KB133AAAA feeder terminals play an important role in power system protection with their efficiency, reliability and advanced technology, especially in the face of feeder short circuits, ground faults or other abnormal conditions, to quickly troubleshoot and ensure the stable operation of the power system.