ABB RET670 1MRK002816-AB Digital Transformer Protection Relay

ABB RET670 1MRK002816-AB Digital Transformer Protection Relay

Specific Parameters

• Electrical ParametersPower Supply: Rated voltage 24V DC or 110/220V DC/AC, operating voltage range 19.2V DC to 276V DCProcessing Speed: 550μsAnalog Inputs: 2 configurable channels, supporting current and voltage signal measurementDigital Inputs: 6 configurable channels for protection logic triggering and status monitoringDigital Outputs: 6 configurable channels for fault indication and control signal outputRelay Outputs: 4 configurable contacts for tripping and alarm executionCommunication Interfaces: Ethernet, RS-232, RS-485Supported Protocols: IEC 61850, Modbus RTU/TCP, DNP3Display Device: 4-line graphical LCD local HMI
• Environmental ParametersOperating Temperature: -40°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: 200mm × 220mm × 130mm (W×H×D)Weight: Approximately 2.5kgMounting Method: Standard rack mounting or panel mounting, suitable for substation equipment layoutIndicators: Operation, fault, and communication status indicators

Product Performance

It has comprehensive protection functions, integrating transformer differential protection, overcurrent protection, earth fault protection, thermal overload protection and other logics, which can cover various fault scenarios such as short circuits, overloads and voltage abnormalities, accurately identifying faults and responding quickly. Adopting advanced digital signal processing technology, it realizes high-precision measurement of current, voltage and other parameters, providing reliable data support for protection logic and system monitoring.

It has strong communication integration capability, realizing seamless connection with substation automation systems and SCADA systems based on the IEC 61850 standard, and multi-protocol support ensures information interaction with various automation equipment. The combination of local LCD display and remote diagnosis function can present operating status in real time, and the event recording function provides complete data for fault tracing and system optimization.

It boasts excellent environmental adaptability. The wide temperature operating range and high-level anti-interference design ensure continuous and stable operation under harsh electromagnetic environment and temperature fluctuation conditions in substations, with hardware reliability verified by rigorous industrial scenario tests.