About ABB REM543 CG214AAAA PROTECTION RELAY

ABB REM543 CG214AAAA PROTECTION RELAY

The REM 543 machine protection terminals are used as the main protection system of generator and generator-transformer units in power plants.

The REM 543 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 543 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.
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
• 15 binary inputs and 12 output relays and optional RTD