Real Residential Load Profiles for Autotransformer Efficiency Evaluation in San Cristóbal, Dominican Republic

Measurements were taken over four consecutive days (September 19–22, 2024) in a split-phase 240/120 V supply system (Line A, Line B, and Neutral). The file Profile-MEAENE-D-25-00055R1.xlsx includes minute-by-minute data (1-min resolution, 1 440 records per day) of RMS voltage, current, active power, apparent power, and power factor for each line and for the total circuit.

The data were used to estimate the all-day efficiency of a low-voltage autotransformer through an analytical model based on measured demand profiles. Each row corresponds to a 1-minute interval with start/stop timestamps; all quantities are expressed in SI units (V, A, W, VA). This dataset supports the article “Evaluation of the Efficiency of a Low-Voltage Autotransformer under Real Demand Profiles” submitted to Measurement: Energy.