The REF 543 feeder terminal is designed for protection, control,
measurement and supervision in medium voltage networks.
The REF 543 feeder terminal can be used with different kinds of switchgear,
including single busbar, double busbar and duplex systems.
The protection functions also support different types of networks, such as, isolated neutral networks,
resonant-earthed networks and partially earthed networks.
The application area also covers medium-sized three phase asynchronous motors as well as
protection and control of shunt capacitor banks used for reactive power compensation.

Machine safety
The drives feature a built-in safe torque off (STO) function as standard which
disables the power semiconductors. As such, the drive cannot power the
motor making it torque-free. More safety functions, such as safe stop 1. safe
brake control, safely limited speed, safe speed monitor and safe direction, can
be implemented with external safety system options.
Benefits of using TIM foils in comparison to thermal grease are easier installa tion and more durable heat
transferring properties for longer periods of time. Durability par ticularly improved in a cyclic application.
The ABB FS450R12KE3/AGDR-71C is a robust and versatile automation controller designed to meet the
demanding requirements of the power industry, petrochemical sector, and general automation applications.
Known for its outstanding durability and performance metrics,
the FS450R12KE3/AGDR-71C stands out as a reliable solution for various industrial environments.
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