Vertiv Liebert PST5-350MT120, Liebert PST5-660MT120, Liebert PST5-350MT120TAA, Liebert PST5-500MT120, Liebert PST5-660MT120TAA Installer/user Manual

Liebert® PST5™

Installer/User Guide

Technical Support Site

If you encounter any installation or operational issues with your product, check the pertinent section of
this manual to see if the issue can be resolved by following outlined procedures. For additional assistance,
visit https://www.VertivCo.com/en-us/support/

TABLE OF CONTENTS

Important Safety Information 5

1 PST5 Description 7

1.1 Available Models 7

1.2 Controls and Features 8

2 Installation 11

2.1 What's Included 11

2.2 Unpacking and Inspection 11

2.3 Preparation for Installation 11

2.3.1 Installation Environment 11

2.3.2 Installation Clearances 11

2.4 Installing the UPS 11

2.4.1 Connecting Loads 11

2.4.2 Connecting for Network or Telephone Protection 12

2.4.3 Connecting for Television/Cable Protection 12

2.4.4 USB Communication Connection 12

2.4.5 USB Charging Ports 12

2.4.6 Connecting AC Input 12

3 Operation 13

3.1 Modes of Operation 13

3.1.1 Off Mode 13

3.1.2 On/Normal Mode 13

3.1.3 On/Battery Mode 13

3.1.4 Fault Mode 13

3.1.5 Battery Self-test Mode 13

3.2 Controls 14

3.3 Display-panel Indicators 15

3.4 Audible-tone Indicators 17

3.5 Warnings 17

3.6 Faults 18

3.7 Normal Start-up 18

3.8 Normal Shut-down 18

3.9 Full Shut-down 18

4 Maintenance and Battery Replacement 19

4.1 Precautions 19

4.2 Battery Charging 19

4.3 Battery Replacement 19

4.4 Specifications 21

4.5 Run-time Tables 23

Appendices 25

Appendix A: Technical Support 25

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IMPORTANT SAFETY INFORMATION

IMPORTANT! This manual contains important safety instructions that must be followed during the
installation and maintenance of the UPS and batteries. Read this manual thoroughly and the safety and
regulatory information, available at https://www.vertivco.com/ComplianceRegulatoryInfo, before
attempting to install, connect to supply, or operate this UPS.

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1 PST5 DESCRIPTION

The Liebert PST5 is an off-line/stand-by UPS designed with the features you need providing reliable
power protection for small home/office computers, network gear, and home-entertainment equipment.
Designed with controls for user-friendly operation, the Liebert PST5 provides the run time to save work in
process. With the Liebert MultiLink™ shutdown software, you can receive remote alerts and have
unattended, orderly shutdown of your systems.

1.1 Available Models

Table 1.1 PST5 Models

MODEL NUMBER NOMINAL POWE R RATING

PST5-350MT120
PST5-350MT120TAA

PST5-500MT120
PST5-500MT120TAA

PST5-660MT120
PST5-660MT120TAA

PST5-850MT120
PST5-850MT120TAA

350VA/200W

500VA/300W

660VA/400W

850 VA/500W

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1.2 Controls and Features

Figure 1.1 PST5-350MT120and PST5-500MT120 Controls and Features

ITEM DESCRIPTION

1 Surge-protected-only output-power receptacles

2 Red Fault LE D

3 Power button

4 Green Mode LED

5 Battery-backed and s urge-protectedoutputpower receptacles

6 Input Power Cord

7 Input CircuitBreaker

8 RJ11/45 connectors for phone/fax/modem or network surge protection.

9 USB TypeB connector for USB communication with a PC for UPS monitoring and PC shut-down.

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Figure 1.2 PST5-660MT120and PST5-850MT120 Controls and Features

ITEM DESCRIPTION

1 Surge-protected-only output-power receptacles

2 Scroll button

3 Power button

4 LCD Display with icons andnumerical information

5 Battery-backed and s urge-protectedoutputpower receptacles

6 Input Power Cord

7 Input CircuitBreaker

8 USB chargingport (5V, 2.0A)

9 Coax Cable connections for cable modem, DSS receiver, or cable-TVconverter surge-protection connection.

10 RJ11/45 connectors for phone/fax/modem or network surge-protection connection.

11 USB TypeB connector for USB communication with a PC for UPS monitoring and PC shut-down.

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