UNDERSTANDING UPS OPERATION

AC Input to UPS

Rectifiers 3 Wire

A−B−C Rotation

A

A

A

UPM 3

UPM 2

UPM 1

 

E1,

 

E1,

 

E1,

 

 

 

 

E2,

 

E2,

 

E2,

 

E3

 

E3

 

E3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Battery Aux

48V Battery

Shunt Trip

Remote EPO

Interface Board

Building Alarms

Alarm Relays

X−Slot

Interface

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

E4. E5

E4. E5

 

 

C

C

C

 

 

Battery

Battery

Battery

 

 

Breaker

Breaker

Breaker

 

 

BATTERY SYSTEM

BATTERY SYSTEM

BATTERY SYSTEM

 

 

(Not supplied with the UPS)

(Not supplied with the UPS)

(Not supplied with the UPS)

 

 

NOTE Callout letter A maps to Table 3-6on page 3−11. Callout letters B, C, and D map to Table 3-5on page 3−10.

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 6-15. UPS System – Separate Rectifier Feed, Separate Battery, IOM Configuration

6−18

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 AC Input to UPS Rectifiers 3 Wire −B−C Rotation, Rectifier Fuse Inverter