Eaton 9390 UPS 100160 kVA, Инструкция по установке и эксплуатации, Страница: 57 / 226

7-1
EATON Powerware
®
9390 UPS (100–160 kVA) Installation and Operation Manual
S
164201604 Rev B powerware.com
Chapter 7 Understanding UPS Operation
7.1 Looking Inside the UPS System
The Powerware 9390 UPS is a continuous-duty, solid-state, transformerless (at 208 and
480 Vac), three-phase, true online system that provides conditioned and uninterruptible
AC power to the UPS system’s output. The UPS supports process control, data processing,
telecommunications/PBX, research, and non-patient medical equipment. The Powerware
9390 UPS 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 converter, inverter, monitoring/operation
control panel, integrated communication server, and digital signal processor (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 7-1 shows the main elements of the UPS system.
Output
Contactor
K3
Battery
Battery
Breaker
Battery
Converter
Input
Contactor
K1
AC Input to
Rectifier/
Charger
AC Input to
Bypass
Backfeed
Protection
Contactor
K5
Power Module
Inverter Rectifier
Digital
Metering
Static
Switch
AC Output
to Critical
Load
UPS Cabinet
Figure 7-1. Main Elements of the UPS System