A. regulator has an input voltage range. IEC standard for the input voltage is within the range of ± 10 rating changes. Beyond the audible alarm does not automatically make the output voltage stability in the required range.
B. output voltage regulation, is the input voltage air circuit breaker changes caused by the effects of changes in output when the rated load when the input voltage source voltage range according to rating tuned up and down the upper limit value, the measurement the maximum change amount of the output voltage (±). This value is smaller the better, is an important indicator to measure the performance of AC voltage regulator.
C. Load regulation: the changes in the load caused by the effects of changes in output. Changing the size of the load current, measurement of the amount of change of the output voltage (±). This value is smaller the better, but also to measure AC voltage regulator important indicator of performance.
D. The output voltage relative harmonic content (also known as the output voltage distortion), with THD is usually said that the ratio of the total harmonic content of the fundamental rms rms, when the load is rated input voltage distortion ﹑ meet benchmarks when the condition measurement output Circuit Breakers (typically less than 3), the input voltage is the lowest value and the highest value ﹑ rated voltage distortion, whichever is greatest. this value is as small as possible.
E. Efficiency: P0 is the active power and the active power Pi of the input output ratio (percentage).
F. load power factor
Regulators are or KVA capacity (KVA) value indicates the load, in addition to purely resistive load, there are inductive and capacitive loads, with VA (VA) that, in addition to the active power load, there are no reactive power. This indicator reflects the ability of AC power supply with inductive and capacitive loads.
General AC power supply, load power factor cosφ 0.8, when the product is 1KVA, the output of active power (ie, the ability with resistive load) up to:. 800W If the product is represented by 1KW (cosφ still 0.8), active power output 1KW, then output power S = 1000 / 0.8 = 1250VA. Smaller value when the load power factor, showing greater ability to adapt to the power supply of the reactive load.
G. exchange regulator parameters as well as the output power of the input frequency ﹑ ﹑ ﹑ effects of random source frequency deviation (time shift) ﹑ ﹑ load input power source power factor (this value and load power factor is different, I hope the bigger the better, maximum to 1), the relative harmonic content of Electric transformer the source current ﹑ audio noise other items, three-phase AC power supply, as well as three-phase output voltage unbalance degree, definitions and test methods of these pointers can refer to the relevant standard.
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