1. The voltage regulator has an input voltage range. According to the IEC standard, the input voltage can vary ±20% from the rated value. If it exceeds this range, it will automatically trigger an audio-visual alarm and fail to stabilize the output voltage within the required range. 2. The output voltage adjustment rate is the effect of output variation caused by input voltage changes. When the load is at the rated value, adjust the input voltage from the rated value to the upper and lower limits of the source voltage range, and measure the large variation in output voltage (±). The smaller this value, the better, as it is an important indicator of the AC voltage regulator's performance. 3. Load adjustment rate: This is the effect of output variation caused by load changes. Modify the load current, and measure the variation in output voltage (±). The smaller this value, the better, and it is also an important indicator of the AC voltage regulator's performance. Aviation ground power: 2, 36V aviation power; 1, 400HZ frequency converter power; 7, 115/200V power; 2, 27V DC power.
4. Output voltage relative harmonic content (also known as output voltage distortion), usually represented by THD, is the ratio of the total effective value of harmonic content to the fundamental effective value. When the load is at rated value and the input voltage distortion meets the reference conditions (generally should be less than 3), measure the output voltage distortion at low, rated, and high input voltage levels, and take the highest value. The smaller this value, the better. 5. Efficiency: It is the ratio of the output active power P0 to the input active power Pi (expressed as a percentage). 6. Load Power Factor 7. The capacity of voltage regulators is expressed in volt-amps (VA) or kilovolt-amps (KVA). This indicates that in addition to resistive loads, the load also includes inductive and capacitive loads, meaning there is reactive power in addition to active power. This indicator reflects the AC voltage regulator's ability to handle inductive and capacitive loads.
