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

Input

 

 

Contactor

Contactor

Contactor

Contactor

 

 

(K1)

(K1)

(K1)

(K1)

 

 

Rectifier

Rectifier

Rectifier

Rectifier

 

 

Fuse

Fuse

Fuse

Fuse

 

 

Fuse

Fuse

Fuse

Fuse

 

 

Fuse

Fuse

Fuse

Fuse

 

 

Inverter

Inverter

Inverter

Inverter

 

 

Output

Output

Output

Output

 

 

Contactor

Contactor

Contactor

Contactor

 

 

(K3)

(K3)

(K3)

(K3)

 

 

 

 

 

 

 

AC Output

 

 

 

 

 

to Critical

Battery

Battery

Battery

Battery

E10,E9,

D Load

E11,

 

Converter

Converter

Converter

Converter

 

E12

 

 

 

 

 

 

Fuse

Fuse

Fuse

Fuse

 

 

Battery Contactor (K2)

Battery Contactor (K2)

Battery Contactor (K2)

Battery Contactor (K2)

 

 

UPM 4

UPM 1

UPM 2

UPM 3

 

 

FI−UPM CABINET

E4. E5

 

UPS CABINET

 

 

 

 

 

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 6-11. Plus 1 UPS System – Common Rectifier Feed, Common Battery, IOM Configuration

6−14

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 operation manual Rectifier Fuse Inverter Output, Load