REX640 IEC 61850 Protocol Implementation Conformance Statement

This document is the Protocol Implementation Conformance Statement (PICS) for the ABB REX640 Protection and Control IED, specifically detailing its IEC 61850 interface and conformance at Product Connectivity Level PCL4. It covers ACSI conformance statements, service models, and the IEC 61850-9-3 clock profile, serving as a technical reference for configuration and interoperability.