UNDERSTANDING UPS OPERATION

AC Input to

Battery Aux

Building Alarms

UPS Rectifier

 

 

3 Wire A−B−C

48V Battery

Alarm Relays

Rotation

Shunt Trip

 

 

X−Slot

 

 

A

Remote EPO

Interface

 

 

E1, E2, E3

Interface Board

Input Breaker

(CB1)

(optional)

Input

Input

Input

 

 

Contactor

Contactor

Contactor

 

 

(K1)

(K1)

(K1)

 

 

Rectifier

Rectifier

Rectifier

 

 

Fuse

Fuse

Fuse

 

 

Fuse

Fuse

Fuse

 

 

Fuse

Fuse

Fuse

 

 

Inverter

Inverter

Inverter

 

 

Output

Output

Output

 

 

Contactor

Contactor

Contactor

 

 

(K3)

(K3)

(K3)

 

 

 

 

 

 

AC Output to

 

 

 

E9, E10,

Critical Load

 

 

 

D

Battery

Battery

Battery

E11, E12

 

 

Converter

Converter

Converter

 

 

Fuse

Fuse

Fuse

 

 

Battery Contactor (K2)

Battery Contactor (K2)

Battery Contactor (K2)

 

 

 

 

 

UPS

 

UPM 1

UPM 2

UPM 3

CABINET

 

E4. E5

C

Battery

Breaker

BATTERY SYSTEM

(Not supplied with the UPS)

NOTE Callout letters A, B, C, and D map to Table 3-4on page 3−9.

Service Connector

NOTE If the load requires a neutral, a bypass source neutral must be provided. If the load does not require a neutral and there is no neutral conductor connected at the bypass input, a neutral to ground bonding jumper must be installed. DO NOT install both a source neutral and a bonding jumper.

Figure 6-9. UPS System – Common Rectifier Feed, Common Battery, IOM Configuration

6−12

EATON Powerware® 9395 UPS (650–825 kVA) Installation and Operation Manual S 164201725 Rev 2 www.powerware.com

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Powerware 650825 kVA E1, E2, E3 Interface Board Input Breaker CB1 Optional, Rectifier Fuse Inverter, Converter Fuse