Description:

 Application
The REM545 feeder terminals are designed to be used for protection, control, measurement and supervision of medium voltage networks. They 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.

Features
Integrated machine terminals for the protection, control, measurement and supervision of small and medium size generators, synchronous motors and large asynchronous motors.

1. Voltage and current measurement via conventional measuring transformers or current sensors and voltage dividers. 
2. Fixed man-machine interface including a large graphic display, or an external display module for flexible swichgear installation. 
3.Extended functionality including protection, control, measurement, condition monitoring and communication.
4. Non-directional/directional overcurrent/earth-fault protection functions, over- /undervoltage protection functions and special functions for the protection of motors and generators, e.g. voltage controlled overcurrent protection, differential protection with several principles, underexcitation protection, underimpedance protection (line back-up prot.), thermal overload protection, protection against unbalanced load, abnormal frequency protection, reverse or low-forward power protection and start-up supervision for motors.
5. Control functions including local and remote control of switching objects with synchro-check, status indication of the switching objects and interlockings on bay and station level. 
6. Measurement of phase currents, phase-tophase and phase-to-neutral voltages, neutral current and residual voltage, frequency, power factor, active and reactive power and energy. 
7.Optional RTD/mA I/O-module for stator winding, bearing and ambient temperature monitoring. Analog mA outputs for interfacing with process control system. 
8. Condition monitoring including circuitbreaker condition monitoring, trip circuit supervision and internal self-supervision of the machine terminal. 
9. Communication over three communication interfaces: one for local communication with a PC and the others for remote communication with a substation control system or with a substation monitoring system.
10. Part of the ABB’s Distribution Automation system.

sheet Link:

ABB BIO1 1MRS050641D  Binary Input/Output Module PDF Datasheet