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A double-conversion (ONLINE) UPS provides consistent, clean, and near perfect power regardless of the condition of incoming power. Depending upon the load, the systems can work from 170V AC to 270V AC. This means that whatever may be the incoming voltage the output remains constant at 230V AC. This eliminates the need for any stabilizer to be used. However, where the voltage drops below 170V or above 270V, the ONLINE UPS as a precaution will switch to battery mode. It is better to assess the site condition and ensure that incoming supply does not drop below 170 V or above 270V. This UPS converts incoming AC power to DC, and then back to AC. UPS systems with this technology operate on isolated DC power 100 percent of the time and have a zero transfer time because they never need to switch to DC power. Double-conversion UPS systems are designed to protect mission-critical IT equipment, data centre installations, high-end servers, large telecom installations and storage applications, and advanced network equipment from damage caused by a power blackout, voltage sag, voltage surge, over voltage, voltage spike, frequency noise, frequency variation, or harmonic distortion.
Sine wave output:
The highest quality waveform output is sine wave, which is a smooth, repetitive oscillation of AC power. Enterprise-level UPS systems produce sine wave power to operate sensitive electronic equipment. Sine wave output ensures that equipment utilizing Active PFC power supplies do not shut down when switching from utility power to battery power.HIGHLY RECOMMENDED FOR Computer applications where the health of PC and the software used is critical and needs clean power.
Simulated sine wave output:
An approximated sine wave output waveform. It uses pulse wave modulation to generate a stepped, approximated sine wave to supply more cost-effective battery backup power for equipment that does not require sine wave output. The technology used to produce this type of power output is less expensive to manufacture and is common in standby and line interactive UPS systems. Generally recommended for stand alone systems which do not need precision voltage.
