EPS 8000 UPS
Single Module
Users Manual
www.mgeups.com
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS – This manual contains important instructions for all EPS 8000 UPS Single Module
that must be followed during operation of the equipment.
WARNING: Opening enclosures expose hazardous voltages. Always refer
service to qualified personnel only.
ATTENTION: L'ouverture des cabinets expose des tensions dangereuses.
Assurez-vous toujours que le service ne soit fait que par des
personnes qualifiees.
WARNUNG! Das öffnen der Gehäuse legen gefährliche Spannungen bloss.
Service sollte immer nur von qualifizierten Personal durchgeführt
werden.
WARNING: As standards, specifications, and designs are subject to change,
please ask for confirmation of the information given in this
publication.
ATTENTION: Comme les normes, spécifications et produits peuvent changer,
veuillez demander confirmation des informations contenues dans
cette publication.
WARNUNG! Normen, Spezifizierungen und Pläne unterliegen Anderungen.
Bitte verlangen Sie eine Bestätigung über alle Informationen, die in
dieser Ausgabe gemacht wurden.
NOTE: This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance
with installation manual, may cause harmful interference to
radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference in which
case the user will be required to correct the interference at his
own expense.
Important Safety information
EPS 8000 UPS Single Module
page ii
EPS 8000 UPS
Single Module
Users Manual
For service call
1-800-523-0142
86-132217-00 A02 06/03
Copyright © 2003 MGE UPS SYSTEMS, Inc.
All rights reserved. Printed in U.S.A.
MGE UPS SYSTEMS, Inc.
1660 Scenic Avenue
Costa Mesa, CA 92626
(714) 557-1636
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Users Manual
EPS 8000 UPS Single Module
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EPS 8000 UPS
Single Module Users Manual
Warranty Information
Warranty
The liability of MGE UPS SYSTEMS, Inc. hereunder is limited to replacing or repairing at MGE UPS
SYSTEMS, Inc.’s factory or on the job site at MGE UPS SYSTEMS, Inc.’s option, any part or parts which are
defective, including labor, for a period of 12 months from the date of purchase. The MGE UPS SYSTEMS, Inc.
shall have the sole right to determine if the parts are to be repaired at the job site or whether they are to be
returned to the factory for repair or replacement. All items returned to MGE UPS SYSTEMS, Inc. for repair or
replacement must be sent freight prepaid to its factory. Purchaser must obtain MGE UPS SYSTEMS, Inc.’s
Return Materials Authorization prior to returning items. The above conditions must be met if warranty is to be
valid. MGE UPS SYSTEMS, Inc. will not be liable for any damage done by unauthorized repair work, unauthorized replacement parts, from any misapplication of the item, or for damage due to accident, abuse, or Act of
God.
In no event shall the MGE UPS SYSTEMS, Inc. be liable for loss, damage, or expense directly or indirectly
arising from the use of the units, or from any other cause, except as expressly stated in this warranty. MGE
UPS SYSTEMS, Inc. makes no warranties, express or implied, including any warranty as to merchantability or
fitness for a particular purpose or use. MGE UPS SYSTEMS, Inc. is not liable for and Purchaser waives any
right of action it has or may have against MGE UPS SYSTEMS, Inc. for any consequential or special damages
arising out of any breach of warranty, and for any damages Purchaser may claim for damage to any property or
injury or death to any person arising out of its purchase of the use, operation or maintenance of the product.
MGE UPS SYSTEMS, Inc. will not be liable for any labor subcontracted or performed by Purchaser for
preparation of warranted item for return to MGE UPS SYSTEMS, Inc.’s factory or for preparation work for field
repair or replacement. Invoicing of MGE UPS SYSTEMS, Inc. for labor either performed or subcontracted by
Purchaser will not be considered as a liability by the MGE UPS SYSTEMS, Inc.
This warranty shall be exclusive of any and all other warranties express or implied and may be modified
only by a writing signed by an officer of the MGE UPS SYSTEMS, Inc. This warranty shall extend to the
Purchaser but to no one else. Accessories supplied by MGE UPS SYSTEMS, Inc., but manufactured by others,
carry any warranty the manufacturers have made to MGE UPS SYSTEMS, Inc. and which can be passed on to
Purchaser.
MGE UPS SYSTEMS, Inc. makes no warranty with respect to whether the products sold hereunder
infringe any patent, U.S. or foreign, and Purchaser represents that any specially ordered products do not
infringe any patent. Purchaser agrees to indemnify and hold MGE UPS SYSTEMS, Inc. harmless from any
liability by virtue of any patent claims where Purchaser has ordered a product conforming to Purchaser’s specifications, or conforming to Purchaser’s specific design.
Purchaser has not relied and shall not rely on any oral representation regarding the Product sold
hereunder and any oral representation shall not bind MGE UPS SYSTEMS, Inc. and shall not be part of any
warranty.
There are no warranties which extend beyond the description on the face hereof. In no event shall MGE
UPS SYSTEMS, Inc. be responsible for consequential damages or for any damages except as expressly stated
herein.
Service and Factory Repair - Call
1-800-523-0142
Direct questions about the operation, repair, or servicing of this equipment to MGE UPS SYSTEMS, Inc.
Technical Support Services. Include the part number and serial number of the unit in any correspondence.
Should you require factory service for your equipment, contact MGE UPS SYSTEMS, Inc. Technical Support
Services and obtain a Return Materials Authorization (RMA) prior to shipping your unit. Never ship equipment
to MGE UPS SYSTEMS, Inc. without first obtaining an RMA.
Proprietary Rights Statement
The information in this manual is the property of MGE UPS SYSTEMS, Inc., and represents a proprietary
article in which MGE UPS SYSTEMS, Inc., retains any and all patent rights, including exclusive rights of use
and/or manufacture and/or sale. Possession of this information does not convey any permission to reproduce,
print, or manufacture the article or articles shown herein. Such permission may be granted only by specific
written authorization, signed by an officer of MGE UPS SYSTEMS, Inc.
IBM, PC-AT, ES/9000, and AS/400 are trademarks of International Business Machines Corporation. MGE
and MGE UPS SYSTEMS are trademarks of MGE UPS SYSTEMS, Inc. Other trademarks that may be used
herein are owned by their respective companies and are referred to in an editorial fashion only.
Revision History
EPS 8000 UPS Single Module Users Manual
86-132217-00
Copyright © 2003 MGE UPS SYSTEMS, Inc. All rights reserved Printed in U.S.A.
Revision: A01 ECN#003192 04/2003
A02 ECN#003395 06/2003
How To Use This Manual
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Users Manual
How To Use This Manual
This manual is designed for ease of use and easy location of information.
To quickly find the meaning of terms used within the text, look to the Glossary.
To quickly find a specific topic, look at the Table of Contents.
This manual uses Note lines and icons to convey important information.
Note lines and icons come in four variations.
WARNING: Indicates information provided to protect the User and
service personnel against safety hazards and possible
equipment damage.
CAUTION: Indicates information provided to protect the User and
service personnel against possible equipment damage.
NOTE: Indicates information provided as an operating tip or an
equipment feature.
IMPORTANT: Indicates information provided as an operating instruction
or as a tip.
CAUTION
RECORD ALL SERIAL NUMBERS FOR THE SINGLE
MODULE UPS SYSTEM.
THESE SERIAL NUMBERS WILL BE REQUIRED IF
YOUR SYSTEM NEEDS SERVICE. KEEP THIS
MANUAL IN APLACE WHERE YOU CAN REFERENCE
THE SERIAL NUMBERS IF SERVICE IS REQUIRED!
UPS UNIT SERIAL NUMBER: _____________________________________________
MBP CABINET SERIAL NUMBER: ________________________________________
ADDITIONAL SERIAL NUMBERS:
__________________________ ______________________________
__________________________ ______________________________
__________________________ ______________________________
__________________________ ______________________________
__________________________ ______________________________
__________________________ ______________________________
__________________________ ______________________________
__________________________ ______________________________
__________________________ ______________________________
__________________________ ______________________________
CAUTION: Record All Serial Numbers
EPS 8000 UPS Single Module
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Users Manual
Contents
section description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page
Important Safety Instructions . . . . . . . . . . . . . . . . .Inside Front Cover
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ivi
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iv
How To Use This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .v
CAUTION: Record All Serial Numbers . . . . . . . . . . . . . . . . . . . . .vi
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .c-i
Section 1 Introduction
section description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page
1.0 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
1.1 Reference Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
1.2 Section Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
1.3 General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
1.4 Specifications, Circuit Breakers and Powerflow Diagrams . . . .1-3
1.4.1 Circuit Breakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
1.4.2 Power Flow Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5
1.4.2.1 Normal Operation . . . . . . . . . . . . . . . . . . . . . . . .1-5
1.4.2.2 On-Battery Operation . . . . . . . . . . . . . . . . . . . . . .1-5
1.5 Single Module Indicators and Controls . . . . . . . . . . . . . . . . . .1-6
1.5.1 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7
1.5.2 Alphanumeric Display and Controls . . . . . . . . . . . . . . . . . . . . .1-8
1.5.2.1 Two-line Alphanumeric Display . . . . . . . . . . . . . .1-8
1.5.2.2 Alphanumeric Display Pushbuttons Descriptions .1-9
1.5.2.3 Numbered Lights . . . . . . . . . . . . . . . . . . . . . . . .1-10
1.5.3 Hidden Panel Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10
1.5.3.1 LED Alphanumeric Indicator . . . . . . . . . . . . . . .1-11
1.5.3.2 Hidden Panel Lower Pushbuttons . . . . . . . . . . .1-12
Content
Section 2 Operation
section description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page
2.0 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
2.1 Status Screen Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
2.2 Settings Selection Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
2.3 Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
2.4 Sensor Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
2.5 Voltage Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
2.6 Current Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5
2.7 Power Frequency Measurements . . . . . . . . . . . . . . . . . . . . . .2-6
2.8 Battery Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7
2.9 LCD Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8
2.9.1 General Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8
2.9.2 Secondary Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-9
2.10 Preparations Before Start-up . . . . . . . . . . . . . . . . . . . . . . . . .2-13
2.10.1 Checks Before Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-13
2.10.2 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-14
2.10.3 Checks After Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-15
2.11 Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-15
2.11.1 Emergency Shutdown Using EPO . . . . . . . . . . . . . . . . . . . . .2-15
2.11.2 Normal Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-16
2.11.3 With Maintenance Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . .2-16
2.11.4 Without Maintenance Bypass . . . . . . . . . . . . . . . . . . . . . . . .2-17
2.12 Forced Transfers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-18
2.12.1 Uninterrupted Transfer Conditions . . . . . . . . . . . . . . . . . . . . .2-18
2.12.2 Forced Transfer from Bypass AC Input Source to Inverter . . .2-18
2.12.3 Forced Transfer from Inverter to Bypass AC Input . . . . . . . . .2-18
Section 3 Maintenance
section description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page
3.0 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
3.1 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
3.2 Important Safety Instructions for Servicing Batteries . . . . . . . . .3-1
3.3 Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
3.4 Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Glossary g-1
Contents
EPS 8000 UPS Single Module
page c ii
Contents
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Users Manual
Figures
figure description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page
1-1 EPS 8000 System, S-M Configuration, 1 GCC per Module . . . . . . .1-2
1-2 Circuit Breaker Locations on the EPS 8000. (Q4S not shown) . . . .1-3
1-3 Circuit Breaker Locations on the Maintenance Bypass Cabinet . . .1-4
1-4 Circuit Breaker Locations on the Q4S Cabinet. . . . . . . . . . . . . . . .1-4
1-5 Normal Operation, Power Flow Diagram . . . . . . . . . . . . . . . . . . . .1-5
1-6 On-Battery Operation, Power Flow Diagram . . . . . . . . . . . . . . . . . .1-5
1-7 EPS 8000 Front Panel Indicators and Controls. . . . . . . . . . . . . . . .1-6
1-8 Front Panel Indicators and Control Display . . . . . . . . . . . . . . . . . .1-7
1-9 Alphanumeric Display and Controls . . . . . . . . . . . . . . . . . . . . . . . .1-8
1-10 Hidden Panel Indicator Controls . . . . . . . . . . . . . . . . . . . . . . . . . .1-10
2-1 Default Status Screen Alphanumerical Display Configuration. . . . . .2-1
2-2 Settings Selection Display Screen. . . . . . . . . . . . . . . . . . . . . . . . .2-2
2-3 Sequential Alarm Messages for Viewing the Fault Log . . . . . . . . . .2-3
2-4 Measurement Sensors Located throughout the EPS 8000 S-M UPS2-3
2-5 Voltage Measurement Displays . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
2-6 Current Measurements Displays . . . . . . . . . . . . . . . . . . . . . . . . . .2-5
2-7 Power and Frequency Measurements Displays . . . . . . . . . . . . . . .2-6
2-8 Battery Measurements Displays . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7
(This page left blank intentionally)
EPS 8000 UPS Single Module
page c iv
1.0 Scope
This manual provides User instructions for operating the EPS 8000 UPS Single Module system (S-M). Descriptions
include section descriptions, a general overview of system internal components, circuit breaker diagrams, descriptions for front panel displays and control indicators.
Please read this manual before installing the EPS 8000 equipment. Please retain this manual for future reference.
1.1 Reference Manuals
The EPS 8000 UPS Installation Manual (MGE part number 86-132215-00) provides detailed operating instructions
for the EPS 8000 Single Module and Shared Systems. The EPS 8000 UPS Shared Systems Users Manual, (MGE
part number 86-132216-00) provides detailed operating instructions for shared systems.
86-132216-00 EPS 8000 Users Manual, Shared System
86-132215-00 EPS 8000 Installation Manual, Single Module and Shared Systems
86-132204-00 Graphical Command Center, User Manual
1.2 Section Descriptions
This manual is divided into four sections:
Section 1 Introduction
This section provides User instructions for operating the EPS 8000 UPS Single Module system. Descriptions
include section descriptions, a general overview of system internal components, circuit breaker diagrams, descriptions for front panel displays and control indicators.
Section 2 Operation
This section describes procedures for normal operation of EPS 8000 Single Module systems. Including interactive
front panel display, settings for language configuration, alarms message displays, voltage, current, battery measurements, with before and after start-up checks, emergency shutdown using EPO disconnects, and normal conditions
for using forced transfers.
Section 3 Maintenance
This section describes maintenance of the EPS 8000, including troubleshooting LCD alarm message, safety instructions, preventive maintenance, isolation for maintenance, and information about replacement parts.
A Glossary in the rear of this manual provides definitions of terms used within the text.
Users Manual
Introduction
Introduction
page 1 — 1
1.3 General Description
EPS 8000 is a family of compact, high-efficiency uninterruptible power systems. Standard power ratings for singlemodule systems range from 555 to 800 kVA. EPS 8000 UPS are optimized for compatibility with non-linear
computer-type loads. Computer-aided UPS diagnostics and modular construction assures that any required service
on the UPS can be identified and completed rapidly. Remote system monitoring, remote annunciation of UPS
performance signals, and telecommunication capabilities allow total control of the UPS by the user.
The EPS 8000, SSC, battery, and all auxiliary equipment is listed for safety by Underwriter’s Laboratories, Inc. (UL)
under UL Standard 1778 and under Canadian Standards Association (CSA) standard C22.107.
Major components of the EPS 8000 Single Module include:
◗ UPS Single Module
◗ UPS maintenance bypass cabinet
◗ UPS bypass cabinet
◗ Battery disconnect
Each of these cabinets is described below. Figure 1-1 shows a single-module UPS.
Figure 1-1: EPS 8000 System, S-M Configuration, 1 GCC per Module.
Introduction
EPS 8000 UPS Single Module
page 1 — 2
Introduction
page 1 — 3
Users Manual
1.4 Specifications, Circuit Breakers and Powerflow Diagrams
1.4.1 Circuit Breakers
EPS 8000 UPS circuit breakers (except the battery disconnect circuit breaker QF1) are located behind the doors of
the Input/Output cabinet. Following is a brief description of the available circuit breakers and contacts, and their
function (Figures 1-2, 1-3, and 1-4).
Q1 Input isolation circuit breaker, used to isolate the UPS from the main AC input (mains 1) and provide
input current protection.
QF1 Battery disconnect circuit breaker, external to the UPS, used to disconnect the battery from the UPS.
QF1 provides isolation and protection between the UPS and its battery system.
Q3BP (optional) Maintenance bypass circuit breaker, used to supply the attached load via the bypass source
while the UPS is being serviced.
Q5N Optional UPS isolation circuit breaker, used to isolate the UPS module from the attached load.
Q4S Bypass input circuit breaker; it is used to isolate the UPS from the bypass input (mains 2) source and
provide back-feed protection. This circuit breaker is mounted inside the Input/Output cabinet for 625
and 555 kVAunits.
Figure 1-2: Circuit Breaker Locations on the EPS 8000. (Q4S not shown)
INPUT
CB, Q1
Figure 1-3: Circuit Breaker Locations on the Maintenance Bypass Cabinet.
Figure 1-4: Circuit Breaker Locations on the Q4S Cabinet.
Introduction
EPS 8000 UPS Single Module
page 1 — 4
GROUND
BYPASS INPUT
A, B, C
NEUTRAL
OUTPUT
A, B, C
Q5N
Q3BP
Q4S
(optional)
NEUTRAL
GROUND
BYPASS INPUT
A, B, C
BYPASS INPUT CB
Q4S
Introduction
page 1 — 5
Users Manual
1.4.2 Power Flow Diagrams
1.4.2.1 Normal Operation
During normal operation, power flows from the main AC input source (mains 1) into the UPS rectifier/battery charger
section. The rectifier/battery charger converts the AC voltage to DC, maintains the charge of the battery, and feeds
the DC power to the inverter. The inverter regenerates AC voltage, and supplies the attached load. See Figure 1-5.
Figure 1-5: Normal Operation, Power Flow Diagram.
1.4.2.2 On-Battery Operation
If the main AC input source (mains 1) fails or goes out of tolerance, the charger stops. Power flows from the battery
to the UPS inverter, which in turn supplies the attached load. When the main AC input source (mains 1) returns, the
charger restarts automatically and the UPS resumes its normal operation. See Figure 1-6.
If the battery becomes depleted before the main AC input source (mains 1) returns, the inverter stops and the
attached load is transferred to the bypass AC input source (mains 2) if it is available.
Figure 1-6: On-Battery Operation, Power Flow Diagram.
Bypass AC input
(mains 2)
Static switch
Rectifier/battery
charger
Main AC input
(mains 1)
Battery
Bypass AC input
(mains 2)
Inverter
Attached
load(s)
Static switch
Main AC input
(mains 1)
Rectifier/battery
charger
Battery
Inverter
Attached
load(s)
1.5 Single Module Indicators and Controls
Single Module indicators and controls are located in three places on the UPS cabinet: on the front panel, behind a
drop-down cover just below the front panel, and inside the cabinet doors, see Figure 1-7. In battery cabinets and
auxiliary cabinets, the controls are located behind the cabinet doors.
The following display descriptions:
◗ Front Panel
◗ Alphanumeric Display
◗ Hidden Panel
Figure 1-7: EPS 8000 Front Panel Indicators and Controls..
Introduction
EPS 8000 UPS Single Module
page 1 — 6
Introduction
page 1 — 7
Users Manual
1.5.1 Front Panel
The UPS front panel, includes the emergency power off (EPO) pushbutton, the audible alarm, four LEDs that serve
as system status indicators, the “inverter on” pushbutton, and the “inverter off” pushbutton. See Figure 1-8.
Figure 1-8: Front Panel Indicators and Control Display.
EPO On the left side of the front panel, an emergency power off (EPO) pushbutton is
provided, with a protective cover to guard against inadvertent operation. This
pushbutton, when activated, disconnects the main AC input (mains 1), bypass AC
input (mains 2), and battery power to the UPS, and disconnects output power to the
attached load.
Audible alarm (item 1) The audible alarm provides an audible warning to the operator by sounding
a pulsed “beep” when any of the following conditions occur:
◗ Load transferred to bypass (mains 2)
◗ Load supplied via battery
◗ Operating problem
During minor alarm conditions, the alarm sounds at a slow rate and a low sound
level. When the battery approaches the low-voltage shutdown level, the alarm
sounds louder and at an increased rate. If the inverter shuts down, the alarm
sounds loudly and continuously.
An audible alarm reset is located on the hidden panel. See Figure 1-7. Pressing it
will silence the alarm. Should a higher-level alarm condition occur after the reset
has been activated, the audible alarm will sound the new alarm condition.
¡
Load not protected (item 2 ) This red LED turns on when any of these conditions occur:
◗ The load is no longer protected following an inverter shutdown,
or the opening of the isolation circuit breaker (Q5N).
◗ The battery circuit breaker QF1 is open, making battery power
unavailable.
⁄
Operating problem (item 3) This orange LED turns on when an operating problem exists, such as fan
failure; static switch power supply fault; battery temperature fault;
overload fault; or bypass AC input (mains 2) out of tolerance. The UPS
continues to protect the attached load.
ı
Battery (item 4) This orange LED turns on to indicate that the attached load is
being partially or completely supplied by the battery. When the main AC
input (mains 1) fails or is outside tolerance, stored battery energy is
supplied to the inverter, which in turn supplies the load.
Í
Load protected (item 5) This green LED indicates that the attached load is supplied by
the inverter and protected by the battery. During normal operation, this
LED is the only one that is on.
Inverter on (item 6) This green pushbutton is used to start the inverter. When it is pushed, the
green “load protected” LED flashes for three seconds, indicating that the start
command has been received. When the inverter has synchronized with the bypass
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