Looking Inside The Ups; Figure 2. Main Elements Of The Ups System - Powerware 9315 Operation Manual

Looking Inside the UPS

The Powerware 9315 is a continuous duty, solid-state UPS that supports the
following equipment: process control, data processing, telecommunications/PBX,
research, and medical. The Powerware 9315 maintains power to the critical loads
during commercial electrical power brownout, blackout, overvoltage, undervoltage,
and out-of-tolerance frequency conditions.
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 2 shows the main elements of the UPS.
AC INPUT TO
RECTIFIER/
CHARGER
INPUT
FILTER
AC INPUT TO
BYPASS
UPS CABINET
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 backup battery supply allows you to either
transfer to an alternative power system (such as a generator) or shut down your
critical load in an orderly manner.
The operation of the UPS system is described in greater detail in Chapter 3,
"Understanding UPS Operation." Chapter 10, "Product Specifications," outlines
the storage and operating specifications for the UPS and optional battery.
4
POWER PROCESSING UNIT
RECTIFIER/
CHARGER
DIGITAL
METERING
STATIC
SWITCH
BYPASS
CONTACTOR

Figure 2. Main Elements of the UPS System

BATTERY CABINET
OUTPUT
TRANSFORMER
OUTPUT
CONTACTOR
INVERTER
Powerware 9315 (200 kVA ---300 kVA) Operation
AC OUTPUT
TO CRITICAL
LOAD
164201036 Rev. D 041500