Table Of Contents - Emerson Liebert NXL series Operation And Maintenance Manual

250 to 800kva, 50/60hz, three phase single-module and 1+n

Table of Contents

Liebert NXL UPS

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INTRODUCTION.......................................................................................................... 11

1.1

General Description.................................................................................................................................... 11

1.2

Modes of Operation .................................................................................................................................... 11

1.2.1

Normal Mode ........................................................................................................................................... 11

1.2.2

Bypass Mode............................................................................................................................................ 12

1.2.3

Battery Mode ........................................................................................................................................... 12

1.2.4

Maintenance Bypass ................................................................................................................................ 12

1.3

Options......................................................................................................................................................... 13

OPERATION ................................................................................................................. 14

2.1

Features ....................................................................................................................................................... 14

2.2

Touchscreen Navigation ............................................................................................................................. 19

2.2.1

Main Display Screen................................................................................................................................ 19

2.2.2

Help.......................................................................................................................................................... 19

2.2.3

Metering................................................................................................................................................... 19

2.2.4

Silence...................................................................................................................................................... 19

2.2.5

Reset......................................................................................................................................................... 19

2.2.6

Configurations Menu ............................................................................................................................... 20

2.2.7

Status Reports Menu ................................................................................................................................ 28

2.2.8

Startup Menu............................................................................................................................................ 29

2.2.9

Shutdown Menu ....................................................................................................................................... 29

2.2.10

Transfer Menu..................................................................................................................................... 31

2.2.11

Battery Management Menu ................................................................................................................. 31

2.3

Modes of Operation .................................................................................................................................... 35

2.3.1

Load on Bypass........................................................................................................................................ 35

2.3.2

OK to Transfer ......................................................................................................................................... 36

2.3.3

Input Power Failure-Load on Battery.................................................................................................... 36

2.3.4

Off Battery ............................................................................................................................................... 37

2.3.5

Emergency Power Off (EPO) .................................................................................................................. 38

2.3.6

Remote Emergency Power Off (REPO)................................................................................................... 38

2.4

Manual Procedures..................................................................................................................................... 39

2.4.1

Startup Procedure..................................................................................................................................... 39

2.4.2

Load Transfer Procedures ........................................................................................................................ 42

2.4.3

Maintenance Bypass Load Transfers ....................................................................................................... 43

2.5

Shutdown Procedures................................................................................................................................. 45

2.5.1

Module Shutdown Procedure................................................................................................................... 45

2.6

Automatic Operations ................................................................................................................................ 46

2.6.1

Overloads (Without Transfer) .................................................................................................................. 46

2.6.2

Automatic Transfers to Bypass (Overload Condition)............................................................................. 47

2.6.3

Automatic Transfers to Bypass, UPS System Faults ............................................................................... 47

2.6.4

Automatic Retransfers to UPS ................................................................................................................. 48

2.7

1+N System Operating Procedures ........................................................................................................... 49

2.7.1

General..................................................................................................................................................... 49

2.7.2

Introduction.............................................................................................................................................. 49

2.7.3

Preliminary checks................................................................................................................................... 49

2.7.4

System start-up......................................................................................................................................... 49

2.7.5

Cut off and separate one UPS module from the running parallel system................................................. 54

2.7.6

Recover the UPS module separated from parallel system........................................................................ 54

2.7.7

The steps of shutdown UPS and Load ..................................................................................................... 54

2.7.8

The steps of operation of maintenance bypass......................................................................................... 56

Page v

Operation and Maintenance Manual

Table of Contents----------------------------------------------

Table of Contents