BS EN 61850-9-2:2011

This standard BS EN 61850-9-2:2011 Communication networks and systems for power utility automation is classified in these ICS categories:

• 29.060.01 Electrical wires and cables in general
• 29.120.10 Conduits for electrical purposes
• 33.200 Telecontrol. Telemetering

IEC 61850-9-2:2011 defines the specific communication service mapping for the transmission of sampled values according to the abstract specification in IEC 61850-7-2. The mapping is that of the abstract model on a mixed stack using direct access to an ISO/IEC 8802-3 link for the transmission of the samples in combination with IEC 61850-8-1. Main changes with respect to the first edition are:
- addition of an optional link redundancy layer;
- redefinition of "reserved" fields in link layer;
- evolution of USVCB and MSVCB components;
- evolution of encoding for the transmission of the sampled value buffer.