Technical Specifications Of UPS

Most inverters in the new UPS adopt PWM technology, and quartz crystal oscillation is used to control the frequency of the inverter. The voltage negative feedback circuit ensures the stability of the output voltage. It has a series of advantages of a switching power supply, which ensures stable power output by accurately adjusting the pulse width. At the same time, the application of switching power supply technology also greatly reduces its own losses. The main technical indicators are as follows:

(1) Rated output power and maximum output power;

(2) Switching time;

(3) Output voltage stability, reference value ± 0.5%~± 2%;

(4) Output frequency stability, reference value ± 0.01%~± 0.5%;

(5) The output waveform is pure (sine wave output), with voltage distortion less than 1%, and there is no problem of latent wave distortion;

(6) High efficiency and low loss. The reference index is higher than 90%;

(7) Fault free working time. Due to the adoption of advanced technologies such as microprocessor monitoring technology and IGBT driven SPWM, the current UPS has reached a very high level of reliability. For large UPS power supplies, the average annual time between failures (MTBF) of a single unit has exceeded 200000 hours. If a multi machine "redundant" UPS power supply system with dual bus output is adopted, its MTBF can even reach the order of 10 million hours.