REM545BM223AAAA | ABB Machine Terminal

Description

The REM 545 machine terminals are used as the main protection system of generator and generator-transformer units in small and medium-power diesel, hydroelectric and steam power plants. The protection for large and/or important MV synchronous and asynchronous motors used, for example, in pumps, mills and crushers during start-up and normal run forms another application area. The protection functions of REM 545 are designed for selective short-circuit and earth-fault protection of rotating machines. Unlike most other power system components, rotating machines also need protection against abnormal operating conditions such as over-current, unbalanced load, over-temperature, over-voltage, over and under-excitation, under-impedance, over- and under-frequency and generator motoring. For motor protection start-up supervision, there are also stall protection and cumulative start-up counter features. Scope Machine protection relay Product benefits Extensive protetion for motors and generators Programmable logic functions (PLC) Optical communication for fast disturbance-free communication Flexible connectivity and IEC 61850 support Certified for marine and off-shore use Product features Voltage and current measurement via conventional measuring transformers or current sensors and voltage dividers Support for IEC 61850 protocol through the SPA-ZC 400 adapter 25 binary inputs and 18 output relays and optional RTD

Features • Integrated machine terminals for the protection, control, measurement and supervision of small and medium size generators,synchronous motors and large asynchronous motors. • Voltage and current measurement via conventional measuring transformers or current sensors and voltage dividers. • Fixed man-machine interface including alarge graphic display, or an external displaymodule for flexible swichgear installation. • Extended functionality including protection, control, measurement, condition monitoring and communication. • Non-directional/directional overcurrent/earth-fault protection functions, over-/undervoltage protection functions and special functions for the protection of motorsand generators, e.g. voltage controlledovercurrent protection, differential protection with several principles, underexcitationprotection, underimpedance protection(line back-up prot.), thermal overload protection, protection against unbalancedload, abnormal frequency protection,reverse or low-forward power protectionand start-up supervision for motors • Control functions including local andremote control of switching objects withsynchro-check, status indication of theswitching objects and interlockings on bayand station level. • Measurement of phase currents, phase-tophase and phase-to-neutral voltages, neutral current and residual voltage, frequency,power factor, active and reactive powerand energy. • Optional RTD/mA I/O-module for statorwinding, bearing and ambient temperaturemonitoring. Analog mA outputs for interfacing with process control system. • Condition monitoring including circuitbreaker condition monitoring, trip circuitsupervision and internal self-supervision ofthe machine terminal. • Communication over three communicationinterfaces: one for local communicationwith a PC and the others for remote communication with a substation control system or with a substation monitoring system. • Part of the ABB’s Distribution Automationsystem.

Application The REM 543 and REM 545 rotating machine terminals are designed to be used as anintegrated main protection system of generator and generator-transformer units in smalland medium-power diesel, hydroelectric andsteam power plants, etc. The protection oflarge and/or important MV synchronous andasynchronous motors used e.g. in pumps,fans, mills and crushers during start-up andnormal run forms another application area.The REM 54_ machine terminals as integrated packages make possible compactmarine environment solutions for unit protection, too. In addition to protection, measurement, control and condition monitoring and generalfunctions, the machine terminals are providedwith a large amount of PLC functions allowing several automation and sequence logicfunctions needed for substation automation tobe integrated into one unit. The data communication properties include SPA bus, LONbus or MODBUS communication withhigher-level equipment. Further, LON interbay communication, together with PLC functions, minimizes the need for hardwiringbetween the machine terminals.

The company focuses on DCS, PLC, robot, large servo four systems

The main products are various modules/cards, controllers, touch screens, servo drivers Company advantage: Supply imported original products, professional production of spare parts One year warranty, fast delivery time, complete supply !！！ ① 24 hours email response (12 hours); ② For shipment outside Asia, please contact the seller.

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