ABB Relion 670 Series Applications Manual page 435

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1MRK 505 370-UUS Rev. K

SMAI function delivers a magnitude of zero with good quality for all the channels. Thus, this has no effect

on a busbar protection, nor protections in an 1 1/2 circuit breaker configuration.

GUID-F723C815-3A26-481A-B046-21D1243E7080 V1 EN-US

Figure 219: Configuration of current inputs using SMAIs in a 1 1/2 circuit breaker application.

Busbar protection REB670

Application manual

SMAI function blocks exist in different cycle times, and all the SMAI blocks that receive

SV streams from the merging units must have the block input signal configured in the

same way to get the correct behavior.

Station communication

Relion reb670