Voltage regulatorinput voltage range from160V to 250V phase voltage of 160V ~ 250V

Voltage regulator output voltage 220V or 110V phase voltage 220V line voltage 380V

Voltage regulator over voltage 246V 4V phase voltage 246V + 4V (in phase voltage)

Line voltage 426V

Regulator stability and precision of 3%

The A. regulator has an adaptive range of input voltage. IEC standard for the input voltage within the rated value of 10 range. Beyond the range that is automatically sound and light alarm and can not make the output voltage stability in the range of requirements.

B. output voltage adjustment rate, input voltage change is caused by the effect of output changes, when the load is the rated value, the input voltage according to the voltage source range from rated value to increase to the maximum value and the down limit, measuring the output voltage change is the biggest amount (+). The smaller the better, it is an important index to measure the performance of AC voltage regulators.

C. load adjustment: the effect of the change of the load caused by the change of output. Changing the load current, and measuring the output voltage (+). The smaller the better, and also the important indicator to measure the performance of AC voltage regulator.

D. output voltage relativeharmonic content(also known as the output voltage distortion), usually in thd said is harmonic content of the total effective value and fundamental effective value ratio, when the load is the rated value, the input voltage distortion degree to satisfy the baseline condition (generally less than 3), as the lowest value in the input voltage, ratings and the highest value measuring output voltage distortion and take the maximum. This value is, the smaller the better.

E. efficiency: the ratio of the active power P0 with the input of the active power Pi is the output of the active power,

F. loadpower factor

Regulator capacity with voltammetry (VA) or KVA (kVA) value, is in the load in addition to thepure resistanceof load and perceptual and capacitive load, the load in addition to the active power, andwithout power. This pointer reflects the ability of the AC voltage regulator to take the inductive and capacitive loads.

General AC regulated power supply, load power factor cos phi = 0.8, when the product is 1kW, active power output (i.e. with a resistive load capacity) maximum 800W. If the product is expressed with 1kW (COS Phi still is 0.8). The output power of 1kW, then can output power S=1000 /0.8=1250VA. The load power factor value is small, which indicates that the power supply equipment is suitable for the reactive load.