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Introduces optional wideband accuracy classes (e.g., WB2 for frequencies up to 20 kHz) to address the impact of harmonics on modern power grids. Environmental Resilience:
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Newer parts of the 61869 series incorporate digital communication standards, such as Sampled Values (SV) over Ethernet, aligning directly with IEC 61868 and IEC 61850 protocols for digital substations.
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The transition from the old IEC 60044 standards to the IEC 61869 series brought several modern improvements to power system engineering: