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FAQ

Is IEC TR 61850-90-4 mandatory for substation networks?

Conclusion — IEC TR 61850-90-4 is a Technical Report (TR), not a mandatory standard. It is intended to help system integrators and manufacturers build high-availability, low-latency, interoperable Substation Ethernet networks.

Scope and applicability

  • Position — design recommendations and best practices, not conformance test clauses.
  • Decision — adoption and scope are defined by the owner’s specification, site requirements, and contract.
  • Objective — ensure real-time performance, reliability, and interoperability for time-critical signals such as GOOSE / SV.

Next step: Recommended switch features
Related products: IEC 61850-3 / IEEE 1613 switches

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