This device allows conversion of current substations to process bus substations without change in the primary equipment. The advantages of process bus can be used, but also a mixed configuration of process bus / non-process bus is possible.

Siemens process bus solutions not only fulfill the standard but increase customer value beyond.

The SIPROTEC 6MU80 merging units are not only certified according IEC 61850-9-2LE for process bus applications but include a lot of additional features. Some, but not all, of the additional features are:

• Extended temperature range (-40 ºC – 70 °C)

• Configurable 12 binary inputs / 8 binary outputs

• Time synchronization via PPS, IRIG-B or GPS

• Full support IEC 61850-8-1 GOOSE

• PRP and HSR (IEC 62439)

• Integrated Web-Server

• Comprehensive engineering with DIGSI

• Full integration of whole substations in process bus technology by keeping well known engineering concepts of SIPROTEC.

• Minimize wiring by measuring directly at the sensors, operating at a central position and use of fiber optical Ethernet

• Enhanced safety by avoiding open wire condition at relays

• Easier extension / maintenance, adding a device only connection to the network necessary. No direct connection to the sensors required

• Maximum network reliability, through seamless redundancy protocols

• Interoperability ensured, standardized in IEC 61850-9-2

• Merging Units for conventional CT/VT offer process bus advantages without change in primary Equipment