MGE UPS Systems EPS 7000 User Manual
EPS 7000
Shared System
Users Manual
www.mgeups.com
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS – This manual contains important instructions for all EPS 7000 Shared System 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 7000 Shared Systems
page ii
EPS 7000
Shared Systems
Users Manual
For service call
1-800-523-0142
86-134005-00 X0 08/04
Copyright © 2004 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
page iii
Users Manual
EPS 7000 Shared Systems
page iv
EPS 7000
Shared Systems 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 7000 Shared Systems Users Manual
86-134005-00
Copyright © 2004 MGE UPS SYSTEMS, Inc. All rights reserved Printed in U.S.A.
Revision: X0 R&D-001651 08/2004
How To Use This Manual
page v
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 SHARED
UPS SYSTEMS.
THESE SERIAL NUMBERS WILL BE REQUIRED IF
YOUR SYSTEM NEEDS SERVICE. KEEP THIS
MANUAL IN A PLACE WHERE YOU CAN REFERENCE
THE SERIAL NUMBERS IF SERVICE IS REQUIRED!
SSC SERIAL NUMBER: _______________________________________________
ADDITIONAL MODULE SERIAL NUMBERS:
UPS DESIGNATIONS UPS SERIAL NUMBERS
__________________________ ______________________________
__________________________ ______________________________
__________________________ ______________________________
__________________________ ______________________________
__________________________ ______________________________
__________________________ ______________________________
__________________________ ______________________________
__________________________ ______________________________
__________________________ ______________________________
__________________________ ______________________________
CAUTION: Record All Serial Numbers
EPS 7000 Shared Systems
page vi
page c i
Users Manual
Contents
section description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page
Important Safety Instructions . . . . . . . . . . . . . . . . .Inside Front Cover
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iv
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6
1.4.2.1 Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6
1.4.2.2 On-Battery Operation . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7
1.5 Shared Systems Indicators and Controls . . . . . . . . . . . . . . . . . . .1-9
1.5.1 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10
1.5.2 Alphanumeric Display and Controls . . . . . . . . . . . . . . . . . . . . . . .1-12
1.5.2.1 Two-line Alphanumeric Display . . . . . . . . . . . . . . . . . . .1-12
1.5.2.2 Alphanumeric Display Pushbuttons . . . . . . . . . . . . . . . .1-12
1.5.2.3 Numbered Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-13
1.5.3 Hidden Panel Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-14
1.5.3.1 LED Alphanumeric Indicators . . . . . . . . . . . . . . . . . . . . .1-14
1.5.3.2 Hidden Panel Lower Pushbuttons . . . . . . . . . . . . . . . . . .1-16
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
2.4 Voltage Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
2.5 Current Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5
2.6 Power Frequency Measurements . . . . . . . . . . . . . . . . . . . . . . . . . .2-6
2.7 Battery Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7
Content
Section 2 Operation (continued)
section description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page
2.8 LCD Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8
2.8.1 General Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8
2.8.2 Secondary Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-9
2.9 Preparations Before Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-14
2.9.1 Checks Before Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-14
2.9.2 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-15
2.9.3 Checks After Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-16
2.10 Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-17
2.10.1 Emergency Shutdown Using EPO . . . . . . . . . . . . . . . . . . . . . . . .2-17
2.10.2 Normal Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-17
2.10.3 Isolation of an Individual UPS Module . . . . . . . . . . . . . . . . . . . . .2-18
2.10.4 With Maintenance Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-19
2.10.5 Without Maintenance Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-19
2.11 Forced Transfers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-20
2.11.1 Uninterrupted Transfer Conditions . . . . . . . . . . . . . . . . . . . . . . . .2-20
2.11.2 Forced Transfer from Bypass AC Input Source to Inverter . . . . . .2-20
2.11.3 Forced Transfer from Inverter to Bypass AC Input . . . . . . . . . . . .2-20
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
3.5 Troubleshooting and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3
Glossary g-1
Contents
EPS 7000 Shared Systems
page c ii
Contents
page c iii
Users Manual
Figures
figure description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page
1-1 EPS 7000 System., S-S Configuration, 1 GCC per Module,
located on SSC Cabinet (not shown) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
1-2 Circuit Breaker Locations on the EPS 7000 . . . . . . . . . . . . . . . . . . . . . . . .1-3
1-3 Static Switch Cabinet (SSC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
1-4 Single-line Diagram, Typical UPS Shared systems Installation . . . . . . . . . .1-5
1-5 Normal Operation, Power Flow Diagram . . . . . . . . . . . . . . . . . . . . . . . . . .1-6
1-6 On-Battery Operation, Power Flow Diagram . . . . . . . . . . . . . . . . . . . . . . .1-7
1-7 Bypass Operation, Power Flow Diagram . . . . . . . . . . . . . . . . . . . . . . . . . .1-8
1-8 EPS 7000 Front Panel Indicators and Controls . . . . . . . . . . . . . . . . . . . . .1-9
1-9 Front Panel Indicators and Control Display . . . . . . . . . . . . . . . . . . . . . . .1-10
1-10 Alphanumeric LCD Display , Settings , and
Pushbutton Indicators and Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-12
1-11 Hidden Panel Alphanumeric LEDs and
Pushbutton Indicators and Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-14
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 Voltage Measurement Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
2-5 Current Measurements Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5
2-6 Power and Frequency Measurements Displays . . . . . . . . . . . . . . . . . . . . .2-6
2-7 Battery Measurements Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7
(This page left blank intentionally)
EPS 7000 Shared Systems
page c iv
1.0 Scope
This manual provides User instructions for operating the EPS 7000 Shared Systems (S-S). 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 7000 equipment. Please retain this manual for future reference.
1.1 Reference Manuals
The EPS 7000 Installation Manual (MGE part number 86-134003-00) provides detailed operating instructions for the
EPS 7000 Single Module and Shared Systems. The EPS 7000 Single Module Users Manual, (MGE part number
86-134004-00) provides detailed operating instructions for single module systems.
86-134004-00 EPS 7000 Users Manual, Single Module
86-134003-00 EPS 7000 Installation Manual, Single Module and Shared Systems
1.2 Section Descriptions
This manual is divided into four sections:
Section 1 Introduction
This section provides User instructions for operating the EPS 7000 Shared Systems. 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 7000 Shared 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 7000, 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 7000 is a family of compact, high-efficiency uninterruptible power systems. Standard power ratings for singlemodule systems range from 300 to 500 kVA. EPS 7000 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 7000, 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 7000 Shared Systems include:
◗ UPS Shared Systems
◗ SSC static switch cabinet
◗ SSC maintenance bypass cabinet
Each of these cabinets is described below. Figure 1-1 shows the Shared System.
Figure 1-1: EPS 7000 System., S-S Configuration, 1 GCC (not shown) per Module, located on SSC Cabinet.
Introduction
EPS 7000 Shared Systems
page 1 — 2
Introduction
page 1 — 3
Users Manual
1.4 Specifications, Circuit Breakers and Powerflow Diagrams
1.4.1 Circuit Breakers
EPS 7000 circuit breakers and switches (except the battery disconnect circuit breaker QF1) are located behind the
doors of the UPS cabinet, or through the door in the optional MBC. Following is a brief description of the available
circuit breakers, contactors and switches, and their function. The single-line diagram in Figure 1-4 shows the location
of each circuit breaker, contact and switch within the electrical path, and Figures 1-2 and 1-3 show the location of each
switch, contact and circuit breaker within the enclosures. Following is a brief description of the available circuit
breakers and contacts, and their function.
Upstream of the SSC:
Q4S Customer-supplied upstream circuit breaker, used to isolate the SSC from the bypass
AC input (mains 2) source and provide back-feed protection.
In the UPS modules:
Q1 Input isolation circuit breaker, used to isolate the UPS module from the main AC input
(mains 1) source and provide input current protection.
Q5N UPS isolation circuit breaker, used to isolate the UPS module from he attached load.
In the circuit of the battery of each UPS module:
QF1 Battery disconnect circuit breaker, used to disconnect the battery from the UPS. QF1
provides isolation and protection between the UPS module and its battery system.
Figure 1-2: Component Locations on the EPS 7000.
MULTI SLOT
(OPTION)
MODEM AND PWR
SUPPLY (OPTION)
OUTPUT
STATI C
SWITCH
RECTIFIER
SERIES
FILTER
CHOKES
CONTROL
FUSES
INPUT CB/SW
OUTPUT CB/SW
Q1
Q5N
INPUT
FUSES
OUTPUT FUSES
INPUT FILTER FUSES
BLOWERS (4X)
BLOWERS (4X)
BLOWERS (3X)
RAUZ2 PCA (OPT)
RAUZ PCA
IBEZ PCA
GUI POWER SUPPLY
OBEZ PCA
BAIZ1 PCA
TREZ PCA
ALBEZ PCA
EPOZ PCA
INVERTERS (6X)
DC CAPS
APOZ PCA
ACPZ PCA
ARUZ PCA
OUTPUT XFMR
(BEHIND PANEL)
CARD CAGE
ALEZ PCA
AROZ-US PCA
CROZ-US PCA
CRIZ-US PCA
SRIZ PCA
GTCZ-7000 PCA
GT2Z-7000 PCA (OPT.)
INPUT FILTER (3X)
OUTPUT FILTER (4X)
FAN XF MRS
Figure 1-3: Static Switch Cabinet (SSC).
In the SSC (and optional MBC):
Q2S Wrap-around circuit breaker (automatic), used to supply the attached load via the
bypass AC input (mains 2) source.
Q3BP (Optional), system maintenance bypass circuit breaker, used to supply the attached
load via the maintenance bypass source while the SSC is being serviced.
Q5N (Optional), system isolation circuit breaker, used to isolate the shared system from the
attached load.
Introduction
EPS 7000 Shared Systems
page 1 — 4
FUSES
(F1, F2, F3, & F4)
ROTARY SWITCHES
(SW1, & SW2)
TRANSFORMER (T13)
FAR SIDE OF PANEL
PCA (EPOZ)
PCA (ACOZ)
PCA (RAUZ)
PCA (ACPZ)
PCA (OBEZ)
CAPACITORS
(C11, C12, & C13)
FAR SIDE OF PANEL
PCA (IBEZ)
PCA (PROZ)
CARD CAGE
STATIC SWITCH CABINET
(WITH FRONT DOORS REMOVED)
TRANSFORMER (T12)
UPS
UPS
BYPASS
BYPASS
PCA (CBOZ)
MAINTENANCE BYPASS CABINET
(WITH FRONT DOOR REMOVED)
CIRCUIT BREAKER
(Q2S)
CIRCUIT BREAKER
(Q3BP)
CIRCUIT BREAKER
(Q5N)
PCA (ALEZ)
PCA (AROZ)
PCA (SRIZ)
PCA (GTCZ)
FUSES (F11, F12, & F13)
FAR SIDE OF PANEL
STATIC SWITCH PCA
(SSSZ)
STATIC SWITCH
Introduction
page 1 — 5
Users Manual
Figure 1-4: Single-line Diagram, Typical UPS Shared systems Installation.
MAINTENANCE
BYPASS
AC INPUT
BYPASS
AC INPUT/
MAINS 2
Q4S
(CUSTOMER
SUPPLIED)
STATIC SWITCH CABINET
STATIC SWITCH
Q2S
MAINTENANCE
BYPASS CABINET
(OPTIONAL)
Q3BP
Q5N
TO
ATTACHED
LOAD
BYPASS
AC INPUT/
MAINS 1
OPTIONAL INPUT
TRANSFORMER
(REQ'D FOR
600V MODELS)
TRANSFORMER
CABINET
OPTIONAL INPUT
TRANSFORMER
(REQ'D FOR
600V MODELS)
TRANSFORMER
CABINET
INPUT
CB
Q1
UPS
CABINET
INPUT
CB
Q1
UPS
CABINET
INPUT
FILTER (TYP.)
INPUT
FILTER (TYP.)
CHARGER
BATTERY
DISCONNECT
QF1
OR
BATTERY
CABINET(S)
CHARGER
BATTERY
DISCONNECT
QF1
OR
BATTERY
CABINET(S)
INVERTER
+ - G
INVERTER
+ - G
OUTPUT
FUSES
OUTPUT
FUSES
OUTPUT
STATIC
SWITCH
OUTPUT
STATIC
SWITCH
OUTPUT
CB
Q5N
OUTPUT
CB
Q5N
FROM ADDITIONAL
UPS MODULES
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 inverters regenerate AC voltage, and supply the SSC’s UPS module AC output bus.
The SSC supplies the attached load. See Figure 1-5.
Figure 1-5: Normal Operation, Power Flow Diagram.
Introduction
EPS 7000 Shared Systems
page 1 — 6
Bypass AC input
(mains 2)
Rectifier/battery
charger
Main AC input
(mains 1)
Inverter
Q2S
Static switch
Static switch
cabinet (SSC)
TO
ATTACHED
LOAD
Additional
modules
Battery
Rectifier/battery
charger
Battery
UPS module
Inverter
UPS module
Additional
modules
Introduction
page 1 — 7
Users Manual
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 batteries
to the UPS inverters, 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 batteries become 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)
Main AC input
(mains 1)
Rectifier/battery
charger
Inverter
Q2S
Static switch
Static switch
cabinet (SSC)
TO
ATTACHED
LOAD
Additional
modules
Battery
Rectifier/battery
charger
Battery
UPS module
Inverter
UPS module
Additional
modules
Figure 1-7: Bypass Operation, Power Flow Diagram.
Introduction
EPS 7000 Shared Systems
page 1 — 8
Bypass AC input
(mains 2)
Rectifier/battery
charger
Main AC input
(mains 1)
Battery
Inverter
UPS module
Q2S
Static switch
Static switch
cabinet (SSC)
TO
ATTACHED
LOAD
Additional
modules
Rectifier/battery
charger
Battery
Inverter
UPS module
Additional
modules
Introduction
page 1 — 9
Users Manual
1.5 Shared Systems Indicators and Controls
Shared Systems 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 1-8. In battery cabinets and
auxiliary cabinets, the controls are located behind the cabinet doors.
NOTE: The SSC does not include inverter on or inverter off pushbuttons #6 and #7, or the battery operation
LED #4.
The following display descriptions:
◗ Front Panel
◗ Alphanumeric Display
◗ Hidden Panel
Figure 1-8: EPS 7000 Front Panel Indicators and Controls.
Front Panel
Alphanumeric
Display
Hidden Panel
Cover Plate
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