ABB Relion 670 Series Technical Reference Manual page 1007

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1MRK505222-UUS C

Technical reference manual

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

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.

Station communication

Relion red670