measuring transformers, non-conventional transducers or both. The gathered data are
then transmitted to subscribers over the process bus, utilizing the IEC 61850-9-2LE
protocol.
ABB "physical MU" contains up to 3 logical MUs, each capable of sampling 4 currents
and 4 voltages.
The IED communicates with the MUs over the process bus via the OEM module port
"CD". For the user, the MU appears in the IED as a normal analogue input module and
is engineered in the very same way.
1MRK505222-UUS C Section 17
Station communication
1001
Technical reference manual
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