This application manual details the configuration, operation, functionality, and standardized configurations for the ABB REF611 feeder protection and…
The document serves as a comprehensive guide for the REF611 series of numerical protection and control relays designed for low-end protection and supervision applications in utility substations and industrial switchgear. It covers product documentation, symbols, conventions, and an overview of the device's operation functionality, including local and web-based human-machine interfaces (HMI).
The manual provides detailed information on standardized configurations (A, B, and C), defining specific applications, functions, default I/O connections, and functional diagrams for protection, disturbance recording, trip circuit supervision, and control. It also outlines requirements for measurement transformers and describes the physical connection points for inputs such as phase currents, residual current, and auxiliary supply voltage.
The REF611 is a series of numerical protection and control relays intended for low-end protection and supervision applications in utility substations, industrial switchgear, and equipment.
The product must be connected to a secure network, and the network administrator is responsible for installing firewalls, authentication, encryption, and anti-virus programs to protect against security breaches.