Overview: The document provides detailed information on the standard configurations of the Relion® 615 series, specifically the RET615 model, which is used for transformer protection and control. It outlines the supported functions, codes, and symbols associated with the device.

Protection Functions: The RET615 supports various protection functionalities for two-winding transformers, including:

Standard Configurations: The document lists four standard configurations (A, B, C, D) for the RET615, each including different combinations of the aforementioned protection functions. The configurations are tailored for specific protection needs on the HV and LV sides of transformers.

Control and Monitoring Functions: The RET615 includes:

Measurement Capabilities: The device supports disturbance recording and various current measurements, including three-phase, sequence, and residual current measurements for both HV and LV sides.

Standards and Protocols: The RET615 adheres to IEC 61850 standards for communication and control, ensuring compatibility with modern substation automation systems.

Contact Information: For further inquiries, ABB Oy, Distribution Automation can be contacted at their office in Vaasa, Finland.