Powerware 9330 operation manual Understanding UPS Operation, Looking Inside the UPS System

Understanding UPS

Operation

6.1Looking Inside the UPS System

The Powerware 9330 is a continuous duty, solid-state, transformerless (at 208 VAC), three phase, true online system that provide conditioned and uninterruptible AC power to the UPS systems output. The UPS supports process control, data processing, telecommunications/PBX, research, and non---patient medical equipment. The Powerware 9330 maintains power to the critical loads during commercial electrical power brownout, blackout, overvoltage, undervoltage, and out-of-tolerance frequency conditions.

The basic system consists of a rectifier, battery charger, DC booster, inverter, monitoring/operation control panel, integrated communications server, and microprocessor controlled (DSP) logic.

In this manual, the power required by your equipment is called the critical load. The UPS supplies the critical load with conditioned power that is synchronized with your utility power. Figure 6---1 shows the main elements of the UPS.

Powerware 9330 (10 kVA--40 kVA) Installation and Operation	6--1
164201300 REV. G 061502