Siemens SIPROTEC 5 6MU805 Merging Unit – Process Bus Interface for Conventional Instrument Transformers
The Siemens SIPROTEC 6MU805 Merging Unit is an advanced process bus device that connects conventional current and voltage transformers (CTs/VTs) to modern digital substations. It enables an easy transition from conventional wiring to process bus architecture without modifying primary equipment, offering interoperability, reduced wiring, and improved system reliability
Technical Specifications
Function: Merging unit for conventional CTs and VTs in process bus systems
Standards Compliance: IEC 61850-9-2LE certified
Inputs/Outputs:
12 configurable binary inputs
8 binary outputs
Operating Temperature Range: -40°C to +70°C
Time Synchronization: PPS, IRIG-B, GPS
Communication Protocols: IEC 61850-8-1 GOOSE, PRP, HSR (IEC 62439)
Integrated Features:
Web server for configuration and diagnostics
Full DIGSI 5 engineering support
Mixed process bus / non-process bus configuration possible
Benefits:
Simplified wiring and maintenance
Enhanced safety and reliability
Fiber-optic Ethernet for high performance
Standardized interoperability (IEC 61850-9-2)
Enables process bus benefits without changing primary equipment
Standards Compliance: IEC 61850-9-2LE certified
Inputs/Outputs:
12 configurable binary inputs
8 binary outputs
Operating Temperature Range: -40°C to +70°C
Time Synchronization: PPS, IRIG-B, GPS
Communication Protocols: IEC 61850-8-1 GOOSE, PRP, HSR (IEC 62439)
Integrated Features:
Web server for configuration and diagnostics
Full DIGSI 5 engineering support
Mixed process bus / non-process bus configuration possible
Benefits:
Simplified wiring and maintenance
Enhanced safety and reliability
Fiber-optic Ethernet for high performance
Standardized interoperability (IEC 61850-9-2)
Enables process bus benefits without changing primary equipment
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