The WT1800 and WT5000 appear to have power compensation ON (by default) with no user-congiruable options (no option to turn it off).
Industry-leading accuracy for efficiency, harmonics, and power parameters, ensuring regulatory compliance and confident design of energy-efficient systems.
The WT1800 Power Analyzer offers maximum flexibility with up to six wattmeter elements, high bandwidths, simultaneous high speed digitizing, and wide voltage and current ranges. Although this model is still available, the newer WT1800E offers higher accuracy.