ABB REF541EM115BAAA Feeder protection relay
The REF 541 feeder terminals can be used with different types 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 grounded networks and partially grounded networks. Application areas also include the protection and control of medium-sized three-phase asynchronous motors and shunt capacitor banks for reactive power compensation. In addition to protection, measurement, control, condition monitoring and general functions, the REF 541 feeder terminal offers a large number of PLC functions, allowing the integration into a single unit of the many automation and sequential logic functions required for substation automation.
Data communication attributes include the following communication standards: SPA bus, LON bus, IEC 60870-5-103, IEC 61850 via SPA-ZC 400, Profibus DPV1 via SPA-ZC 302, DNP 3.0, and Modbus communication with higher level devices. In addition, LON communication along with PLC functionality minimizes the need for hard wiring between feeder terminals.
Product Advantages
Protection functions for many different types of power networks
Programmable logic functions (PLC)
Wide support of different communication protocols
Optical communication for fast and interference-free communication
Product features
Voltage and current measurement via conventional measuring transformers or current sensors and voltage dividers
Short-circuit fault locator for all types of networks
IEC 61850 protocol support via SPA-ZC 400 adapter
15 binary inputs and 12 output relays
A large number of imported DCS system accessories and PLC system accessories are supplied.
Main products: DCS system accessories, robot system accessories, and large servo system spare parts of various major brands such as Bentley, Invensys, Woodward, Foxboro, Westinghouse, Ryan, Schneider Modicon, ABB, AB, Siemens, Motorola, GE Fanaco, Yaskawa, Bosch Rexroth, ACSO, YOKOGAWA, Yokogawa, and Rexroth
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