High efficient UPS offer an advantage to reduce electrical bill cost. Since a true online UPS runs through energy conversion to supply its load, a percentage of the Input power is dissipated in the form of heat. An efficient system keeps this loss to minimum so that the gain becomes high to supply maximum possible energy to the load. D Series UPS provides up to 93% efficiency due to high input power factor, technology and inverter design. As a result overall costs decrease and lifespan of the system gets longer.

With the aid of advanced IGBT rectifier, input power factor close to 1 (>0.99) and input current harmonic distortion less than 5% are achieved resulting in reduced costs. Ensures clean and sinusoidal input current, avoids pollution of the upstream power supply.

DSP controlled battery management provides the possible maximum battery lifespan. Battery monitoring gets real time information of battery capacity and remaining time that facilitates you to proactively plan maintenance operations to avoid any unexpected failures. Besides, UPS tests the batteries at certain adjustable intervals without switching off the rectifier thus even if the batteries malfunction; it guarantees consistent operation of inverter for the critical loads supplied. Temperature compensated battery charging continuously monitors temperature changes in battery cabinet and adjust the charging rate accordingly that greatly extend the battery life. Moreover, "Hot Swap" feature is available allowing battery change without disconnecting the UPS.

In D Series UPS structure, in order to control and operate all power stages at their ultimate performance, two Digital Signal processor (DSP) are dedicated. Various complex feedback algorithms, data acquisition, communication protocols are sensed by simultaneously working DSPs. The DSP controlling technology supply useful features such as high efficiency and reliability UPS.

A gorgeous user interface consists of interactive multi-line dual displays. The display above shows energy flow over its mimic diagram and the position of the circuit breakers. All the parameters of input/output and battery menu are observed on this LCD.

The dual input power allows the user to take advantage of a secondary power source. In this configuration, while feeding the rectifier input from the main source, the static and maintenance bypass can be fed from a secondary source. Each unit is facilitated with this feature that can be achieved with a little modification.