voltage inputs to the merging unit and the inaccuracy added by the merging unit
must be coordinated with the requirement for actual type of protection function.
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.
Section 23
1MRK 511 407-UEN C
Requirements
364
Phasor measurement unit RES670 2.2 IEC
Application manual
Summary of Contents for Relion RES670
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