The Siemens SIPROTEC 5 6MU85 merging unit digitizes current and voltage signals right at the switchgear and sends them over the IEC 61850 process bus. It is a building block of the digital substation.

SIPROTEC 5 models

  • 6MU85 – modular merging unit for the IEC 61850 process bus

Key functions

  • Sampled Values to IEC 61850-9-2
  • Binary inputs and outputs for breaker and switch control (GOOSE)
  • Optional protection functions in the merging unit
  • Time synchronization for process-bus accuracy
  • Replaces copper wiring between the yard and the control building

Typical applications

New digital substations, substation upgrades that move to a process bus, and projects that want less copper cabling and more online monitoring.

Why buy through Cynomatic

  • Local Calgary support for selection, configuration (DIGSI 5) and ordering
  • Help matching the right I/O, CT/VT and communication options to your project specification
  • Supply for utilities, oil & gas, water and industrial projects across Western Canada

Need a quote or help choosing a configuration? Contact our team or email info@cynomatic.com. See the full SIPROTEC 5 protection relay range.