Yokogawa is claiming the highest accuracy yet available from a power analyser, for its new WT5000. On ac measurements, accuracy is 0.03% – made up of 0.01% of reading plus 0.02% or range (44-66Hz). Power factor influence is 0.02% of S. It is slightly less accurate on dc: 0.02% of reading plus 0.05% of range. The ...
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