Emerson GXT 10KVA User Manual

POWER AVAILABILITY

MAINTENANCE BYPASS CABINET FOR NFINITY™
& GXT 10

KVA

USER MANUAL

TABLE OF CONTENTS

IMPORTANT SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

GLOSSARY OF SYMBOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

1.0 GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

1.1 System Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.1.2 Standard Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.1.3 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.0 MODES OF OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

2.1 UPS Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.2 Bypass Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.0 MAJOR COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

3.1 Bypass Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.2 User Selectable Output Distribution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.2.1 Optional Transformer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4.0 PREPARATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.1 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.2 Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.3 Required Setup Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.4 Site Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

5.0 UNLOADING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

5.1 Unloading the Maintenance Bypass Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

5.2 Stationary Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

6.0 CABLE INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

6.1 Wiring Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

6.2 Preparing Internal Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

6.3 Dual Source Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

6.4 Removing the Cover Plates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

6.5 Power Cable Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

6.6 REPO Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

6.7 Input and Output Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

7.0 OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

7.1 Start-Up and Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

7.2 Shutting Down the UPS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

7.3 Transferring the System from UPS to Maintenance Bypass Operation . . . . . . . . . . . . . . . . 22

7.4 Transferring the System from Maintenance Bypass to UPS Operation . . . . . . . . . . . . . . . . 22

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8.0 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

8.1 Proper Care. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

8.2 Scheduled Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

8.2.1 Replacing Fan Filters—Transformer Models Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

9.0 SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

FIGURES

Figure 1 Front view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Figure 2 Rear view (without transformer) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 3 Rear view (with transformer) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 4 Bypass operation modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 5 Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 6 Jumper removal—transformer models and non-transformer models . . . . . . . . . . . . . . . . . . . . . . 12

Figure 7 Maintenance Bypass Cabinet with transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 8 Maintenance Bypass Cabinet without transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 9 Electrical connections—transformer model MBC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 10 Electrical connections—non-transformer model MBC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 11 Connecting Nfinity to Maintenance Bypass with transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 12 Connecting Nfinity to Maintenance Bypass without transformer . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 13 Connecting Maintenance Bypass to GXT10000T-208X . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 14 Connecting Maintenance Bypass to GXT10000T-240X . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

TABLES

Table 1 Common receptacle and hardwire options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Table 2 Maintenance Bypass Cabinet physical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Table 3 Nfinity power cable and protection ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Table 4 GXT 10kVA power cable & protection ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

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IMPORTANT SAFETY INSTRUCTIONS

SAVE THESE INSTRUCTIONS

This manual contains important instructions that should be closely followed during installation and
maintenance of this Maintenance Bypass Cabinet.

This product is designed for commercial/ industrial use only. This product is not intended for use with
life support and other designated “critical” devices. Maximum load must not exceed that shown on the
UPS and the Maintenance Bypass Cabinet rating label.

WARNING

!

Lethal voltages may be present within this unit even when it is apparently not operating.
Observe all cautions and warnings in this manual. Failure to do so may result in serious
injury or death. Never work alone.

The Nfinity Maintenance Bypass Cabinet is designed for use on properly grounded (earthed)
208/240VAC, 60Hz supply, for installation by qualified personnel. This UPS equipment is intended to
be installed by a qualified / certified electrician who must review and approve customer supplied wir­ing, circuit breakers, intended loads and verify correct input, output and grounded (earthed) connec­tions to ensure compliance with technical standards and national and local electrical codes.
Installation instructions and warning notices are located in the Installation section of this manual.

WARNING

!

To reduce the risk of fire:

• The NMB1x and NMB4x models must be connected to a circuit provided with 100 amperes
maximum branch circuit overcurrent protection in accordance with applicable national and
local electrical codes.

• The NMB5x and NMB8x models must be connected to a circuit provided with 125 amperes
maximum branch circuit overcurrent protection in accordance with applicable national and
local electrical codes.

Operate the UPS equipment in an indoor environment only in an ambient temperature range of 32°F
to 104°F (0°C to 40°C). Install it in a clean environment, free from conductive contaminants, mois­ture, flammable liquids, gases, or corrosive substances.

Never block or insert any object into the ventilation holes or other openings.

1

GLOSSARY OF SYMBOLS

Risk of Electrical Shock

Indicates Warning or Caution Followed by Important Instructions

AC Input

AC Output

i

Requests the user to consult the manual

Equipment Grounding Conductor

ON

OFF

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1.0 GENERAL DESCRIPTION

Congratulations on your purchase of Liebert’s Nfinity™ Maintenance Bypass Cabinet with Config­urable Output Distribution. As with every Liebert product, we stand behind our quality. If you have
any questions concerning this Maintenance Bypass Cabinet, please feel free to contact your local
dealer, Liebert representative, or call the appropriate Technical Support number listed on the back of
this manual.

To ensure proper installation and operation of this unit, please read this manual thoroughly.

Installation must be done by a qualified/certified electrician, but general operation may be performed
without special training.

1.1 System Description

The Liebert Nfinity Maintenance Bypass Cabinet is intended for use with the Nfinity UPS. Typical
applications include supporting workstations, servers, network, telecom or other sensitive electronic
equipment.

The Nfinity Maintenance Bypass Cabinet was designed to provide maximum system availability to
business critical equipment. The Nfinity Maintenance Bypass Cabinet allows for transfer of con­nected loads to an alternate power path allowing full isolation of the UPS. The UPS can then be
turned “OFF” and removed from service with no interruption of power to connected loads.

1.1.1 Features

• Supports up to 20 kVA loads

• High speed transfer switch

• Compact design

• Highly configurable

• Multiple power path indicators

General Description

1.1.2 Standard Components

• Casters and leveling feet

• Easily accessible terminal blocks

• Supports Lockout/Tagout Program

• Support/mounting brackets for additional stability

• Provisions for hardwire output

• Dual-source compatible for increased availability

1.1.3 Options

• Output transformer for isolation

• Field-installable output distribution

3

Figure 1 Front view

General Description

Output breaker
(CB1)

Bypass availability
indicator (amber)

Bypass switch
(SW1)

UPS input power
present (amber)

UPS output
availability
indicator
(green)

UPS input
switch (SW2)

Cooling fans
(transformer
models only)

Support bracket

4

Figure 2 Rear view (without transformer)

Configurable output
distribution (optional)

General Description

Hardwire output
(standard)

UPS input (TB3)

Maintenance bypass
input (TB1)

Hardwire output
terminal block (TB5)

UPS output (TB4)

Maintenance bypass
input (TB2)

Support bracket

5

Figure 3 Rear view (with transformer)

Configurable output
distribution (optional)

General Description

Hardwire output
(standard)

Tap selector (TB4)

Maintenance bypass
input (TB1) (TB2)

Hardwire output
terminal block (TB6)

UPS output (TB5)

UPS input (TB3)

Support bracket

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