ABB REF545KB133AAAA High performance feeder protection terminal module

ABB REF545KB133AAAA High performance feeder protection terminal module

Specific Parameters

• Electrical ParametersOperating Voltage: 220V DC/ACProcessing Speed: 550μsProtection Operation Time: ≤30msAnalog Channels: 10 (including virtual channels for zero-sequence current/voltage), supporting 0-5A, 0-100V signal inputDigital Inputs: 16 logic digital input signalsDigital Outputs: 8 relay output contactsSampling Frequency: 2kHz at 50Hz, 2.4kHz at 60HzCommunication Interfaces: 3 serial interfaces (1 front RS-232, 2 rear RS-485), Ethernet interfaceSupported Protocols: SPA, Modbus RTU, LON, IEC 103Program Capacity: 300KBData Capacity: 200KB
• Environmental ParametersOperating Temperature: -20°C to 70°CStorage Temperature: -40°C to 85°CRelative Humidity: 5% to 95% (non-condensing)Protection Class: IP20EMC Immunity: Complies with IEC 61000 series standards
• Mechanical ParametersDimensions: 20cm × 25cm × 30cmWeight: Approximately 2.5kgMounting Method: Standard control cabinet DIN rail mountingIndicators: Ready, Fault, and Comm status indicators

Product Performance

It features fast protection response. With 550μs processing speed and ≤30ms operation time, it can quickly identify faults such as short circuits and overloads, and isolate fault points to prevent accident expansion. Multiple types of protection functions cover all scenarios of distribution feeders, and the 2kHz high sampling frequency ensures accurate signal measurement, providing reliable data support for protection logic.

It has strong communication compatibility. Multi-interface and protocol support enable real-time data interaction with SCADA systems and distribution master stations. The front interface supports local parameter configuration, and the rear interfaces can access optical fiber communication networks for remote monitoring. Equipped with a comprehensive self-diagnostic system, it can real-time monitor module status, alarm via indicators and output fault codes when a fault occurs, enabling accurate fault location.

It offers high programming flexibility. The IEC 61131-3 standard-based graphical programming environment allows custom interlock logic and control strategies, adapting to different distribution network wiring modes. The device has a compact structure, and the DIN rail mounting design simplifies cabinet layout. The wide temperature operating range ensures continuous and stable operation in harsh industrial environments.