Eaton 91PS Manual

Eaton 91PS/93PS UPS
8-10 kW
User’s and installation
guide
EEaattoonn 9911PPSS//9933PPSS UUPPSS

Copyright © 2023 Eaton Corporation plc. All rights reserved.
This manual contains important instructions that you should follow during installation and maintenance of
the UPS and batteries. Please read all instructions before operating the equipment and save this manual
for future reference.
This is a product for commercial and industrial application in the second environment. Installation
restrictions or additional measures may be needed to prevent disturbances. The contents of this manual
are the copyright of the publisher and may not be reproduced (even extracts) without the written approval
of Eaton Corporation. Every care has been taken to ensure the accuracy of the information contained in
this manual, but no liability can be accepted for any errors or omission. The right to make design
modifications is reserved.
Unauthorized copying and lending are prohibited.
Eaton Electric Oy
Address: Riistakuja 1
FI-01740 Vantaa
FINLAND
Internet: www.eaton.eu
Approvals and version history
RREEVVIISSIIOONN AATTEE EESSCCRRIIPPTTIIOONN OOFF CCHHAANNGGEE AAPPPPRROOVVEE BBYY
001 May 2017 First issue Otto Asunmaa
002 July 2017 Second issue Otto Asunmaa
003 May 2018 91PS information added Otto Asunmaa
004 June 2019 Battery sidecar option added Otto Asunmaa
005 October 2023 Minor updates due to EU-directive change Stephan Koehler
These are the original instructions.
EATON 91PS/93PS UPS USER’S AND INSTALLATION
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Contents
1 How to read this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
1.1 Safety-related signs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
1.2 Symbols and abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
1.3 Conventions used in this document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
1.4 Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
2.1 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
2.2 Audience. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
2.3 CE marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
2.4 User precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
2.5 Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
2.6 Symbols on the UPS and accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
2.7 For more information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
3 Introduction to Eaton 91PS/93PS 8-10 kW UPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
3.1 About the Eaton UPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
3.2 Looking inside the UPS system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
3.3 UPS operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
3.3.1 Normal operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
3.3.1.1 Double conversion mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
3.3.1.2 Energy Saver System mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
3.3.2 Stored energy and battery mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
3.3.3 Bypass mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
3.3.4 Maintenance Bypass Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
3.4 UPS features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
3.4.1 Advanced Battery Management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
3.4.2 Powerware Hot Sync . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
3.4.3 Power Conditioner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
3.4.4 Frequency Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
3.5 Software and connectivity features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
3.5.1 User interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
3.5.2 Power Management Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
3.6 Options and accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
3.6.1 External Maintenance Bypass Switch Panel (accessory) . . . . . . . . . . . . . . . . . . . . . . . . .24
3.7 Battery system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
3.8 Basic system configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
4 UPS installation plan and unpacking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
4.1 To install the UPS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
4.2 Create an installation plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
4.3 Installation checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
4.4 Site preparations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
4.4.1 Environmental considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
4.4.2 Installation considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
4.4.3 UPS system power wiring preparations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
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4.5 Unpack and unload the UPS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
5 UPS system installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
5.1 Introduction to UPS system installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
5.2 Steps to install the UPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
5.3 91PS/93PS 8-10 kW UPS Single feed installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
5.4 91PS input system field configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
5.5 Battery system installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
5.5.1 Battery trip wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
5.6 Installing additional batteries and battery power cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
5.7 Installing a remote EPO switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
5.8 Installing interface connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
5.8.1 Installing customer input signals interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
5.8.2 Battery breaker wiring interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
5.8.3 Relay output interface connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
5.8.4 Industrial Relay Card interface connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
5.8.5 Minislot interface connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
5.8.6 Installing signal interface connections in a parallel system . . . . . . . . . . . . . . . . . . . . . . . .51
5.9 Wiring parallel 91PS/93PS UPS systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
5.9.1 Power wiring overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
5.9.2 Control signals overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
5.9.3 Installing bypass control wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
5.10 UPS system interface wiring preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
6 Communication interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
6.1 Introduction to communication interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
6.2 MiniSlot cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
6.3 Intelligent Power Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
6.4 Signal input monitoring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
6.5 General purpose relay contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
6.6 Configuring relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
7 UPS operating instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
7.1 Introduction to UPS operating instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
7.2 UPS controls and indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
7.2.1 Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
7.2.2 Status indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
7.2.3 System events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
7.2.4 Menu structure of the 91PS/93PS UPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
7.2.4.1 User settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
7.3 Signing in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
7.4 System control instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
7.4.1 Starting the UPS system in the double conversion mode . . . . . . . . . . . . . . . . . . . . . . . . .68
7.4.2 Starting the UPS system in the bypass mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69
7.4.3 Transferring from the double conversion mode to the bypass mode . . . . . . . . . . . . . . . . .69
7.4.4 Transferring from the bypass mode to the double conversion mode . . . . . . . . . . . . . . . . .70
7.4.5 Transferring from the double conversion mode to the Energy Saver System mode . . . . . .70
7.4.6 Transferring from the Energy Saver System mode to the double conversion mode . . . . . .70
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7.4.7 Shutting down the UPS system and critical load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
7.4.8 De-energizing the critical load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
7.5 Starting a single UPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
7.6 Shutting down a single UPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
7.7 Enabling and disabling the battery charger. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
7.8 Using the Remote Emergency Power-off switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
7.9 Turning the UPS from the double conversion mode to the maintenance bypass mode. . . . . . . . . .73
7.10 Turning the UPS from the maintenance bypass mode to the double conversion mode. . . . . . . . . .74
8 UPS maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
8.1 UPS maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
8.2 Important safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
8.3 Preventive maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
8.3.1 Daily maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
8.3.2 Monthly maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
8.3.3 Periodic maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
8.3.4 Annual maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
8.3.5 Battery maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
8.4 Recycling the used UPS or batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
8.5 Maintenance training . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
9 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
9.1 About technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
9.2 Directives and standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
9.3 UPS system input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82
9.4 UPS system output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82
9.5 UPS environmental specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83
9.6 Battery specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84
10 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85
10.1 General information about warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85
10.2 Whom to contact in case of Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85
APPENDIX A: Recommended security hardening guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89
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1 How to read this manual
11..11 SSaaffeettyy--rreellaatteedd ssiiggnnss
These are the safety-related signs used in this document.
DANGER
DANGER indicates a hazard with a high level of risk which, if not avoided, may
result in serious injury or death.
WARNING
WARNING indicates a hazard with a medium level of risk which, if not avoided,
could result in serious injury or death, or damage to the equipment.
CAUTION
CAUTION indicates a hazard with a low level of risk which, if not avoided, could
result in minor or moderate injury, or damage to the equipment.
NOTE: Notes are used to indicate important information and useful tips.
11..22 SSyymmbboollss aanndd aabbbbrreevviiaattiioonnss
HHaazzaarrdd ssyymmbboollss
These symbols indicate a hazardous situation or action. Symbols are used to warn of situations, which
can cause environmental damage and personal injury.
General warning sign
Explosion and fire hazard
Battery hazard
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Corrosive hazard
Electrical hazard
PPrroohhiibbiitteedd aaccttiioonn ssyymmbboollss
These symbols are used in warnings and notifications to indicate an action that should not be taken. The
prohibited action symbols are shown below.
No smoking
Limited or restricted access
General symbol for prohibited action
Do not touch
MMaannddaattoorryy aaccttiioonn ssyymmbboollss
These symbols are used in warnings and notifications to indicate an action that must be taken. The
mandatory action symbols are shown below.
Wear eye protection
General symbol for mandatory action
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Read the manual or instructions
Disconnect from power source
First aid
Pb
Batteries marked with this sign must be recycled
11..33 CCoonnvveennttiioonnss uusseedd iinn tthhiiss ddooccuummeenntt
This document uses the following type conventions:
Bold type highlights important concepts in discussions, key terms in procedures and menu options, or
represents a command or option that you type or enter at a prompt.
Italic type highlights notes and new terms when they are defined.
Screen type represents information that appears on the screen or LCD.
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The following acronyms are used in Eaton documentation to refer to Eaton UPS products or their parts.
Table 1. Glossary of acronyms
ABM Advanced Battery Management
EPO Emergency Power-Off
ESS Energy Saver System
IPM Intelligent Power Manager
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IPP Intelligent Power Protector
MBS Maintenance Bypass Switch
MIS Maintenance Isolation Switch
MOB Module Output Breaker
SCR Silicon-Controlled Rectifier
UPM Uninterruptible Power Module
UPS Uninterruptible Power Supply
VRLA Valve Regulated Lead Acid (battery)
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2 Safety instructions
22..11 GGeenneerraall ssaaffeettyy iinnssttrruuccttiioonnss
DANGER
Important safety instructions!
Keep these instructions!
This document contains important instructions that must be followed during the installation, operation and
maintenance of the UPS and the batteries. Read all of the instructions before operating the equipment.
Keep this manual for future reference. These instructions are also available for download at www.eaton.eu/
93ps.
DANGER
Operations inside the UPS must be performed by an authorized Eaton Field
Service Engineer or by other qualified service personnel authorized by Eaton.
There are no user-serviceable parts inside the UPS.
The UPS operates with mains, battery or bypass power. It contains components that carry high currents
and voltage. A properly installed enclosure is earthed and IP20 rated against electrical shock and foreign
objects. However, the UPS is a sophisticated power system and only qualified personnel are allowed to
install and service it.
DANGER
This UPS carries lethal voltages. All repairs and service must be performed by
authorized personnel only. There are no user-serviceable parts inside the UPS.
WARNING
The UPS is powered by its own energy source (batteries). The output terminals
may be energized even when the UPS is disconnected from an AC source. To
reduce the risk of fire or electric shock, install this UPS in a temperature and
humidity controlled, indoor environment that is free of conductive contaminants.
The ambient temperature must not exceed 40 °C (104 °F) non-condensing
conditions. Do not operate the UPS near water or excessive humidity (95%
relative humidity maximum). The system is not intended for outdoor use
Before you start any installation or service work, make sure that all AC and DC
power sources are disconnected. Power may come from multiple sources. Also
ensure system grounding / PE continuity.
In a parallel system, the output terminals may be energized even when the UPS
is turned off.
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WARNING
Batteries present a risk of electrical shock or burn from high short-circuit current.
Obey proper precautions.
Electric energy hazard. Do not attempt to alter any battery wiring or connectors.
Attempting to alter wiring can cause injury.
Do not open or mutilate batteries. Released electrolyte may be toxic and is
harmful to the skin and eyes.
Batteries may contain HIGH VOLTAGES, and CORROSIVE, TOXIC and
EXPLOSIVE substances. Because of the battery string the output receptacles
may carry high voltage even when the AC supply is not connected to the UPS.
Read the shutdown instructions carefully.
IMPORTANT: The battery may consist of multiple parallel strings. Make sure
that you disconnect all strings before installation.
CAUTION
Only qualified service personnel knowledgeable of batteries and the required
precautions are allowed to perform installation or service work on batteries.
Keep unauthorized personnel away from the batteries. Before you install or
replace batteries, consider all the warnings, cautions, and notes concerning
appropriate handling. Do not disconnect the batteries when the UPS is in the
Battery mode.
Make sure that your replacement batteries are of the same number and type as
the battery that was originally installed in the UPS. See more accurate
instructions on the UPS.
Before you connect or disconnect battery terminals, disconnect the charging
source by opening the corresponding battery circuit breaker.
Examine if the battery is inadvertently grounded. If it is, remove the source of
the ground. Contacting any part of a grounded battery can cause a risk of
electric shock. If you disconnect the grounding connection before you work on
the batteries, the risk of an electric shock is less likely.
Discard batteries according to your local disposal requirements. Do not dispose
of batteries in a fire. When exposed to flame, batteries may explode.
To reduce the risk of a fire, connect only to a circuit that has a circuit breaker
that is rated in accordance with the national and local installation rules and UPS
installation instructions.
To ensure proper cooling airflow and to protect personnel from dangerous
voltages inside the unit, keep the UPS door closed and the front panels
installed.
Do not install or operate the UPS system close to gas or electric heat sources.
Keep the operating environment within the parameters stated in this document.
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CAUTION
Keep the surroundings of the UPS uncluttered, clean, and free from excess
moisture.
Obey all DANGER, CAUTION, and WARNING notices affixed to the equipment.
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The intended audience of this document are as follows:
•People who plan and do the installation of the UPS
•People who use the UPS
This document provides guidelines for how to examine the UPS delivery and how to install and operate
the UPS.
The reader is expected to know the fundamentals of electricity, wiring, electrical components and
electrical schematic symbols. This document is written for a global reader.
CAUTION
Read this document before you start to operate or do work on the UPS.
22..33 CCEE mmaarrkkiinngg
The product has a CE marking in compliance with the following European directives:
•LVD Directive (Safety) 2014/35/EU
•EMC Directive 2014/30/EU
•RoHS Directive 2011/65/EU
Declarations of conformity with UPS harmonized standards and directives EN 62040-1 (Safety), EN
62040-2 (EMC) and EN 63000 (RoHS) are available at www.eaton.eu or by contacting your nearest Eaton
office or authorized partner.
22..44 UUsseerr pprreeccaauuttiioonnss
The only permitted user operations are as follows:
•Startup and shutdown of the UPS, excluding the commissioning startup.
•Use of the LCD control panel and the Maintenance Bypass Switch (MBS).
•Use of optional connectivity modules and their software.
Follow the precautions and only perform the described operations. Any deviation from the instructions can
be dangerous to the user or cause accidental load loss.
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DANGER
Do not open any other screws in the unit than those holding the cover plates of
the MiniSlots and the MBS locking plate. Failure to recognize the electrical
hazards can prove fatal.
CAUTION
The 8-10 kW models are available as a C2 UPS product in regard to emissions
and C3 UPS in immunity. The UPS can be placed both in residential and
commercial or industrial environments. When included in a residential
environment, this product may cause radio interference, in which case you may
have to take additional preventive measures.
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The UPS must be installed according to the recommendations in this document. Never install the UPS in
an airtight room, in the presence of flammable gases, or in an environment exceeding the specifications.
Excessive amount of dust in the operating environment of the UPS may cause damage or lead to
malfunction. Always protect the UPS from the outside weather and sunshine. In order to maximize internal
battery service life time, the recommended operating temperature range is from +20 ºC to +25 ºC.
WARNING
During charge, float charge, heavy discharge, and overcharge, hydrogen and
oxygen gases are emitted from lead-acid and NiCd batteries into the
surrounding atmosphere. Explosive gas mixture may be created if the hydrogen
concentration exceeds 4% by volume in air. Ensure the necessary air flow rate
for the ventilation of the UPS location.
22..66 SSyymmbboollss oonn tthhee UUPPSS aanndd aacccceessssoorriieess
The following are examples of symbols used on the UPS or its accessories. The symbols are used to alert
you of important information.
RISK OF ELECTRIC SHOCK
Indicates that a risk of electric shock is present and the associated warning should be
observed.
CAUTION: REFER TO OPERATOR'S MANUAL
Refer to your operator's manual for additional information, such as important operating
and maintenance instructions.
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Pb
This symbol indicates that you may not discard the UPS or the UPS batteries in the
trash. This product involves sealed, lead-acid batteries and they must be disposed of
properly. For more information, contact your local recycling / reuse or hazardous waste
center.
This symbol indicates that you may not discard waste electrical or electronic equipment
(WEEE) in the trash. For proper disposal, contact your local recycling / reuse or
hazardous waste center.
22..77 FFoorr mmoorree iinnffoorrmmaattiioonn
Address any inquiries about the UPS and the battery cabinet to the local office or an agent authorized by
the manufacturer. Quote the type code and the serial number of the equipment.
Contact your local service representative if you need help with any of the following.
•scheduling initial startup
•regional locations and telephone numbers
•a question about any of the information in this manual
•a question that this manual does not answer
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3 Introduction to Eaton 91PS/93PS 8-10
W UPS
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Figure 1. Eaton 91PS/93PS 8-10 kW UPS
The Eaton® 91PS/93PS 8-10 kW uninterruptible power supply (UPS) is a true online, continuous-duty,
transformerless, double-conversion, solid-state, single-/ three-phase system that supplies conditioned and
uninterruptible AC power to critical load and protects it from power failures.
The UPS is used to prevent loss of valuable electronic information, minimize equipment downtime, and
minimize the adverse effect on production equipment due to unexpected power problems.
The Eaton UPS continually monitors incoming electrical power and removes the surges, spikes, sags, and
other irregularities that are inherent in commercial utility power. Working with a building’s electrical
system, the UPS system supplies clean, consistent power that sensitive electronic equipment require for
reliable operation. During brownouts, blackouts, and other power interruptions, batteries provide
emergency power to safeguard operation.
The UPS system is housed in a single, free-standing cabinet with safety shields behind the door for
protection against hazardous voltage.
NOTE: Startup and operational checks must be performed by an authorized Eaton Field Service Engineer
or by other qualified service personnel authorized by Eaton, or the terms specified in the Warranty (see
10.1 General information about warranty) become void. This service is offered as part of the sales contract
for the UPS. Contact service in advance (usually a two-week notice is required) to reserve a preferred
startup date.
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Figure 2. Looking inside the Eaton 91PS/93PS UPS 8-10 kW standard frame
1. Control panel
2. Door latch
3. Communications area
4. Battery breaker
5. Internal battery
6. Switches
7. Client connections
The static bypass line consists of a static switch and a backfeed protection isolation device connected in
series. In addition, there is a system level control unit that constantly monitors the power delivered through
the bypass line or to the input of the UPS. Transfers to static bypass are seamless and performed
automatically by the system as needed, for example, in case of an extended system overload.
Each UPS is able to operate and share the load independently, despite the status of the other UPSs.
The 91PS/93PS UPS 10 kW frame includes rectifier, inverter, battery converter, controls and 10 kW static
bypass. In addition to the internal batteries, external batteries can also be connected.
WARNING
Hazardous voltage can exist in the battery circuit until disconnected from
external battery source.
The rectifier input switch, battery breaker and internal MBS are available as standard for all the models.
If utility power is interrupted or falls outside the parameters specified in Chapter 9.1 About technical data,
the UPS uses a backup battery supply to maintain power to the critical load for a specified period of time
or until the utility power returns. For extended power outages, the UPS allows you to either transfer to an
alternative power system (such as a generator) or shut down your critical load in an orderly manner. The
UPS bypass consists of a continuous-duty static switch and a backfeed protection isolation device. All the
models also include an internal fuse in the bypass line. The backfeed protection and bypass fuse are
located in series with the static switch.
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Table 2. UPS operating modes
UPS operating mode Description
Normal operating modes:
Double conversion mode Critical load is supplied by the inverter, which derives its power
from rectified utility AC power. In this mode, the battery charger
also provides charging current for the battery, if needed.
Energy Saver System (ESS mode) Critical load is supported securely by utility power through the
static bypass switch with double conversion available on-
demand with typically less than a 2 ms transition time, should
any abnormal condition be detected in the utility. When
operating in the ESS mode, the load is protected with inherent
surge suppression. Operating the UPS in the ESS mode
increases system efficiency, allowing significant savings in
energy losses without compromising system reliability.
Other operating modes:
Stored energy mode Energy is drawn from a DC backup power source and
converted to AC power by the UPS inverter. Most commonly
VRLA batteries are introduced to the system for this purpose,
and the mode of operation is called the battery mode.
Bypass mode Critical load is supported directly by utility power through the
UPS static switch.
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This is a UPS with several normal operating modes: Double conversion, Double conversion with VMMS,
and ESS with double conversion on-demand. During normal UPS operation, power for the system is
derived from a utility input source. Unit Online, Unit Online VMMS, or Unit Online ESS is
displayed on the front panel, indicating that the incoming power is within voltage and frequency
acceptance windows.
33..33..11..11 oouubbllee ccoonnvveerrssiioonn mmooddee
Figure 3: Path of current through the UPS in the double conversion mode shows the path of electrical
power through the UPS system when the UPS is operating in the double conversion mode.
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Figure 3. Path of current through the UPS in the double conversion mode
A Static switch 1 Bypass input Main power flow
B Rectifier 2 Rectifier input Energized
C Inverter 3 Output De-energized
D Battery converter 4 Battery breaker Trickle current
E Battery Closed Open
Single-/three-phase AC input power is converted to DC using a multilevel converter with IGBT devices to
produce a regulated DC voltage to the inverter. The UPS status indicated on the display is Unit Online
and the UPM status is Active.
The battery converter derives its input from the regulated DC output of the rectifier and provides regulated
charge current to the battery. The battery is always connected to the UPS and ready to support the
inverter should the utility input become unavailable.
The inverter produces a single-/three-phase AC output to the critical load. The inverter uses multilevel
converter technology with IGBT devices and pulse-width modulation (PWM) to produce a regulated and
filtered AC output.
If the utility AC power is interrupted or is out of specification, the UPS automatically switches to the battery
mode to support the critical load without interruption. When utility power returns, the UPS returns
automatically to the double conversion mode.
If the UPS becomes overloaded or unavailable, the UPS seamlessly switches to the bypass mode and
continues supplying the load through the static bypass. The UPS automatically returns to the double
conversion mode when the abnormal condition, such as an extended time overload, is cleared and the
system operation is restored within the specified limits.
If a UPM within the UPS suffers an internal failure, the remaining UPMs continue to support the load in the
double conversion mode. The UPS is automatically internally redundant when the UPS is not operating at
full load. However, if internal redundancy between the UPMs is not possible due to high load, the UPS
switches automatically to the bypass mode and remains in that mode until the failure is corrected and the
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UPS is back in operation.
In an external parallel redundant system, each UPS can be isolated from the system for service while the
remaining UPSs support the load in the double conversion mode.
33..33..11..22 EEnneerrggyy SSaavveerr SSyysstteemm mmooddee
Figure 4: Path of current through the UPS in the Energy Saver System mode shows the path of electrical
power through the UPS system when the UPS is operating in the Energy Saver System (ESS) mode.
Figure 4. Path of current through the UPS in the Energy Saver System mode
A Static switch 1 Bypass input Main power flow
B Rectifier 2 Rectifier input Energized
C Inverter 3 Output De-energized
D Battery converter 4 Battery breaker Trickle current
E Battery Closed
Open
In the ESS mode, the UPS safely provides mains current directly to the load when the input is within the
acceptable limits by its voltage and frequency. The UPS status indicated on the display is Unit Online
ESS, and the UPM status is Active. Surge board is no longer used in UPS design. In case any
disturbances are detected in the incoming power, the UPS switches to the double conversion mode and
continues to supply the critical load through its inverter. In case of a complete utility outage or if the input
power is outside the tolerances of the system, the UPS transfers to the battery mode and continues to
supply conditioned, clean power to the critical load.
When operating in the ESS mode, the UPS's superior detection and control algorithms continuously
monitor the incoming power quality and allow fast engagement of the power converters. Typical transition
time to the double conversion mode is less than 2 milliseconds, which is practically seamless.
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When the power conditions are within acceptable limits, the UPS operates as a high efficiency, energy-
saving system, providing surge protection for IT equipment and making sure that clean power is delivered
to the facility. The energy saver system increases system efficiency up to 99 % when supplying 20-100 %
of nominal load, reducing energy losses by up to 80 %.
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When running normally in the double conversion or ESS mode, the UPS automatically transfers to supply
the load from batteries or some other stored energy source if a utility power outage occurs, or if the utility
power does not conform to the specified parameters. The UPS status indicated on the display is On
Battery, and the UPM status is Active. In the battery mode, the battery provides emergency DC
power, which is converted to regulated output power by the inverter.
Figure 5: Path of current through the UPS in the battery mode shows the path of electrical power through
the UPS system when operating in the battery mode.
Figure 5. Path of current through the UPS in the battery mode
A Static switch 1 Bypass input Main power flow
B Rectifier 2 Rectifier input Energized
C Inverter 3 Output De-energized
D Battery converter 4 Battery breaker Trickle current
E Battery Closed Open
During a utility power failure, the rectifier no longer has an AC utility source from which to supply the DC
output current required to support the inverter. The input relay K1 opens and the UPS output is powered
from the batteries through the inverter. As the inverter operates uninterrupted through the transition, the
load remains supported continuously without disturbance. If the UPS static bypass is supplied from the
same source as the UPS rectifier, the backfeed protection contactor K5 also opens. The opening of K1
and K5 prevent system voltages from bleeding backwards and re-entering the input source through the
static switch or rectifier.
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