ABB RET670 Protection Relay

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 

                                                                        • ABB RET670 Protection Relay

                                                                          Product Description
                                                                          ABB RET670 is a high-performance Transformer Protection Intelligent Electronic Device (IED) from the ABB Relion® 670 series. It provides fast and selective protection, monitoring, control, and measurement functions for power transformers, autotransformers, generator-transformer units, and shunt reactors.

                                                                          Technical Parameters

                                                                          • Brand: ABB
                                                                          • Model: RET670
                                                                          • Product Type: Transformer Protection Relay / Intelligent Electronic Device (IED)
                                                                          • Series: ABB Relion® 670 Series
                                                                          • Application: High-voltage and medium-voltage power system protection
                                                                          • Rated Frequency: 50/60 Hz
                                                                          • Current Input: 1 A / 5 A CT inputs (configuration dependent)
                                                                          • Power Supply: 48–250 V DC / 100–240 V AC (depending on configuration)
                                                                          • Communication: IEC 61850, IEC 60870-5-103, Modbus, DNP3 (configuration dependent)
                                                                          • Protection Functions:
                                                                            • Transformer differential protection
                                                                            • Overcurrent protection
                                                                            • Earth fault protection
                                                                            • Overvoltage / undervoltage protection
                                                                            • Breaker failure protection
                                                                            • Thermal overload protection
                                                                          • Mounting: Panel / rack mounting

                                                                          Advantages & Features

                                                                          • High-speed transformer differential protection
                                                                          • Automatic CT ratio matching and vector group compensation
                                                                          • Advanced fault detection and disturbance recording
                                                                          • Supports IEC 61850 digital substation communication
                                                                          • Flexible configuration for different transformer applications
                                                                          • Reliable operation in demanding power system environments
                                                                          • Integrated protection, control, monitoring, and measurement functions

                                                                          Applications

                                                                          • Power substations
                                                                          • Transmission and distribution networks
                                                                          • Power transformers
                                                                          • Generator transformer protection
                                                                          • Industrial power plants
                                                                          • Energy and utility automation systems

                                                                          Notes

                                                                          • Confirm transformer parameters and relay configuration before installation.
                                                                          • Check CT/VT ratios and protection settings carefully.
                                                                          • Backup existing relay parameters before replacement.
                                                                          • Commissioning should be performed by qualified electrical engineers. 

The structure and details of the product：