The most effective way to save electronic equipments from power problems is using UPS. UPS units have different sizes, from little desktop system that shields an individual PC to massive UPS that can supply power to a whole building. Nearly every organization has a power safeguard necessity, ranging from companies with computer UPS provides power to your equipment in the case of a entire power collapse, giving you opportunity to save data and close files. At a more commencing level, the UPS conditions and filters networks to hospitals, airports, oil rigs and anywhere where uninterrupted power is must. Today maximum industries are using UPSs to save their core business against mains failures, mains supply fluctuations, power surges, and other troubles in the electrical supply. Spontaneous control, outstanding switching features and excellent reliability make IGBTs the perfect option today for medium and high-power UPS. These modules greatly enhance UPS performance, specifically in terms of proficiency, acoustic noise, shaped and weight. In high capacity UPS where the inverter functions between 2 and 4 kHz, the prime benefit of the IGBT is simplification of transistor control (better reliableness). IGBT is comparable to the bipolar transistors in terms of efficiency.