1. The parameters of the AC voltage regulator have output power, input frequency, source frequency effect, random deviation (time drift), no-load input power, source power factor (this value is different from load power factor, the bigger the hope is, the maximum is 1, the relative harmonic content of the source current, audio noise and other items, three-phase AC power supply, there are three-phase output voltage unbalance, the definition of these indicators and test methods can refer to the relevant specifications.
2. Regulator has an input voltage to adapt to the range. IEC specifications for the input voltage range of ± 10% of the rated value of the company's product input range is ± 15% out of the range that is automatically sound and light alarm and the output voltage can not be stabilized within the required output voltage regulation
3. Input voltage changes caused by changes in the output effect, when the load is rated, the input voltage by the source voltage range from the rated value up to the upper limit and the lower limit, the maximum output voltage measurement changes (±% This value is as small as possible, is an important measure of AC regulator performance.
Load Regulation: The effect of a change in load on the change in output. Change the size of the load current, measure the change of the output voltage (±% The smaller the better, but also measure the performance of the AC voltage regulator an important indicator.
5. The relative harmonic content of the output voltage (also known as the output voltage distortion), D. Usually THD, harmonic content of the total RMS and fundamental RMS, when the load rating, the input voltage distortion to meet Reference conditions (usually less than 3%, when the input voltage is the lowest value, rated value and highest value of the measured output voltage distortion, whichever is the greater. The smaller the value the better. Efficiency: The output of active power P0 and input The ratio of active power Pi (percentage).
6. Regulators are volt-ampere capacity (VA or KVA value that is the load in addition to pure resistive load, there are inductive and capacitive load, that is, in addition to the active load power, there is no Power This pointer reflects the ability of the AC regulated power supply to have inductive and capacitive loads.
7. The power factor coφ is 0.8, when the product is 1KVA, the output active power (that is, the capacity with resistive load) is up to 800 W. If the product is expressed as 1KW (coφ is still 0.8, it can output 1KW active power, At this time, the output power S = 1000 / 0.8 = 1250VA When the load power factor is small, it indicates that the power equipment is more capable of adapting to the reactive load.
