A. The regulator has an input voltage adaptation range. The IEC standard is that the input voltage changes within the range of ±20 of the rated value. If the range is exceeded, it will automatically sound and light alarm and the output voltage cannot be stabilized within the required range.
B. The output voltage adjustment rate is the effect of the change of the output voltage caused by the change of the input voltage. When the load is the rated value, the input voltage is adjusted from the rated value to the upper limit and the lower limit according to the source voltage range, and measure The maximum amount of change in output voltage (±). The smaller the value, the better. It is an important indicator to measure the performance of the AC voltage stabilizer.
C. Load regulation rate: It is the effect of the change in output caused by the change of load. Change the load current and measure the change in output voltage (±). The smaller the value, the better, and it is also an important indicator to measure the performance of the AC voltage stabilizer.
D. The relative harmonic content of the output voltage (also known as the output voltage distortion), usually expressed in THD, is the ratio of the total effective value of the harmonic content to the effective value of the fundamental wave. When the load is rated, the input voltage distortion meets the benchmark Under the conditions (generally less than 3), measure the output voltage distortion when the input voltage is the lowest value, rated value and highest value, whichever is the largest. The smaller the value, the better.
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