ABB REB670 Series Applications Manual page 465

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1MRK 505 370-UEN D
Factors influencing the accuracy of the sampled values from the merging unit are for example
anti aliasing filters, frequency range, step response, truncating, A/D conversion inaccuracy,
time tagging accuracy etc.
In principle the accuracy of the current and voltage transformers, together with the merging
unit, shall have the same quality as direct input of currents and voltages.
Busbar protection REB670
Application manual
Section 21
Requirements
459

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