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This post was last edited by Jibao NARI – Microcomputer Protection – Islanding Prevention – Zhang on 2020-2-20 at 19:24. I. Advantages of the 996 microcomputer differential protection function: 1. Users can configure the appropriate protection based on their actual operational needs, thus truly achieving a solution tailored to their specific requirements”； 2. Each protection function is relatively independent; the protection settings, time limits, blocking conditions, and the activation or deactivation of protections can be adjusted and configured independently ； 3. The implementation of the protection function does not rely on the communication network, meeting the power system’s requirements for protection reliability ； 4. Supports manual switching between multiple sets of protection settings ； 5. It works in close coordination with event recording, fault recording, and communication functions, enabling the application of relay protection technology to reach a new level ； II. The 996 motor differential protection features differential quick-break protection as well as compound ratio differential protection with or without second-harmonic braking. It can be used in scenarios with differential current inputs from three sides (three-winding transformers), and it boasts comprehensive and powerful capabilities for acquiring analog voltage and current signals as well as digital signals from primary equipment. Equipped with standard RS485 and industrial CAN communication ports, it enables various protection and monitoring functions such as differential protection for three-winding main transformers, differential protection for two-winding main transformers, differential protection for two-winding distribution transformers, generator differential protection, motor differential protection, and protection based on non-electrical parameters, through appropriate configuration ；