Distortion can be divided into waveform distortion, voltage distortion, current distortion and so on, any kind of distortion are calculated in percentage, the size of distortion have connection with harmonic, voltage, current and power factor. View>>

This value is usually between 0 and 1, and cannot be larger than 1, which is the ratio of W (real power) and VA (virtual power) , the higher of this percentage , the better performance of the electrical appliance, whereas , the lower of this percentage, t View>>

Efficiency, which is the ratio of output wattage and input wattage, the closer to 1 of this number, the better of its efficiency , for on-line UPS as example , the average efficiency is between 70% to 80%, input is 1000W, output is between 700W to 800W, U View>>

The unit is W, it is the energy that the load real absorbed and transformed, it is a part of apparent power. View>>

Unit of VA, it is not absorbed by the load, it is called reactive power, apparent power, has formed a part of it. Reduce the reactive power will help improve network utilization. View>>

Apparent power is the same as VA ,the change of its power is closely related to the voltage and current of RMS (Root-Mean-Square) . View>>

The abbreviation of Voltage and Current ,VA refers to the apparent power, express by mathematical formulas , the virtual power: input voltage (V) × maximum consumption current (A). View>>

One of indicators that reflects the battery capacity, it refers to the discharge time according to the current. View>>

The intelligent battery charger can automatic exchange floating charge and equalized charging according to the battery working state ,and give full play to the advantage of floating charge and equalized charging , realize fast charging and extend battery View>>

It is a management approach used to protect the UPS batteries and extend batteries'life, it contains many functions, such as it can inform the users when the battery voltage is inadequate or damaged; View>>