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1 General Description 1

1.1 Introduction 1

1.2 Design Concept 1

1.2.1 Redundant vs Non redundant configuration 1

1.2.2 7400 Module Design 2

1.2.3 Bypass Supplies 3

1.2.4 UPS Power Switch Configuration 4

1.2.5 Battery circuit breaker 4

1.2.6 One plus one parallel control 7

1.2.7 Common Battery 9

1.2.8 Operator Control Panel 10

1.2.9 Battery Circuit Breaker 13

1.2.10 Battery cabinet/ rack 13

1.3 Safety Precautions 14

1.3.1 General 14

1.3.2 Batteries 14

1.3.3 Test Equipment 14

1.3.4 Personnel 14

2 Operating Instructions 15

2.1 Introduction 15

2.1.1 Redundant Module System 15

2.1.2 Non Redundant Module System 15

2.1.3 General Notes 15

3 Installation (Electrical) 21

3.1 Introduction 21

3.1.1 Equipment Positioning and Environmental considerations 22

3.1.2 Raised floor installation 22

3.1.3 Battery Location 23

3.2 Preliminary Checks 23

3.3 Connecting UPS Power Cables 25

3.3.1 Cable entry 25

3.3.2 Cable rating 25

3.3.3 Cable connections 26

3.3.4 Cabling procedure 26

3.4 Battery Circuit Breaker Boxes 32

I N D E X

Emerson 7400 Series User Manual

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