Eaton Power Xpert 9395P-1100/1100, Инструкция по установке и эксплуатации, Страница: 131 / 214

Eaton ® Power Xpert ® 9395P-1200 Installation and Operation Manual 164000500—Rev 11 113
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The Eaton 9395P-1200 UPS is a continuous-duty, solid–state, transformerless (at 480 Vac), three-phase, true
online system that provides conditioned and uninterruptible AC power to the UPS system's output and critical
load.
The basic system consists of a rectifier, battery converter, inverter, monitoring/operation control panel,
integrated communication server, and digital signal processor (DSP) logic.
Figure 62 shows the main elements
of the UPS system.
If utility power is interrupted or falls outside the parameters specified in Chapter 10 Product Specifications , the
UPS uses a backup battery supply to maintain power to the critical load for a specified period of time or until the
utility power returns. For extended power outages, the UPS allows you to either transfer to an alternative
power system (such as a generator) or shut down your critical load in an orderly manner.
Figure 62. Main Elements of the UPS System
Backfeed
Protection
Contactor
K5
Static
Switch
Digital
Metering
Inverter
Power Module
Rectifier
Battery
Converter
Output
Contactor
K3
Battery
Contactor
K2
AC Input to
Rectifier/
Charger
Input
Breaker
CB1
(optional)
Input
Contactor
K1
AC Input to
Bypass
UPS Cabinet
AC Output
to Critical
Load
Battery
Breaker
Battery
Battery Cabinet or
Battery String
NOTE On a UPS configured as an Input Output Module (IOM), the bypass input, static switch, and backfeed protection contactor (K5) are not present.
The emergency bypass consists of a continuous-duty static switch and backfeed protection contactor K5. The
backfeed protection contactor is located in series with the static switch. For manual transfers to bypass, the
static switch is also used. The static switch is armed and ready during both types of transfers.