ABB RET670Product NameABB RET670 Transformer Protection & Control Relay (Relion® Series, for 2/3-winding power transformers) 🛡️Product DescriptionThe ABB RET670 is a high-performance, microprocessor-based protection and control relay from the Relion® product family, purpose-built for the comprehensive protection, monitoring, and control of two- and three-winding power transformers in transmission and distribution substations. It integrates core protection functions (differential, overcurrent, restricted earth fault, voltage/frequency, etc.), fault recording, sequence-of-events logging, and flexible communication to enable fast fault detection, isolation, and substation automation. Compatible with IEC 61850, Modbus, DNP3, and IEC 60870-5-103, it seamlessly interfaces with SCADA and substation automation systems, reducing wiring complexity and improving operational reliability in critical power networks.Product Parameters
| Parameter Category | Specific Parameter |
|---|---|
| Model/Ordering Code | RET670 (Relion® Series) |
| Primary Application | Protection, control, monitoring of 2/3-winding power transformers |
| Rated Frequency | 50/60 Hz (switchable) |
| CT Input Rating | 1 A or 5 A (configurable) |
| VT Input Rating | Standard MV/HV transformer voltages (system-level up to 245 kV typical) |
| Auxiliary Supply | 24 V DC (19.2–30 V DC); 110/220 V DC/AC (85–276 V DC/85–264 V AC, typical) |
| Digital I/O (Typical) | Up to 32 binary inputs, up to 32 binary outputs (configurable, module-dependent) |
| Communication Protocols | IEC 61850 (MMS/GOOSE/SV), Modbus RTU/TCP, DNP3, IEC 60870-5-103, PROFIBUS (varies by variant) |
| Operating Temperature (Ambient) | -40 °C to +70 °C (standard); extended ranges available with enclosure |
| Storage Temperature | -40 °C to +85 °C |
| Protection Class |