American Power Conversion PX User Manual

English User's Manual

Main Tech Support:

Phone ......................... [phone]

Fax .............................. [phone]

E-Mail......................... [e-mail]

Toll-Free Numbers:

Ireland ........................ 1-800-702000 x2045

Austria ........................ 0660 6480

Belgium ...................... 0800 15063

Czech Republic .......... 0800 102063

Denmark .................... 800 18 153

France ......................... 0800 906 483

Finland ....................... 9800 13 374

Germany .................... 0130 818907

Holland ...................... 0800 0224655

Hungary ..................... 00800 12221

Israel ........................... 177 353 2206

Italy............................. 1678 74731

Luxembourg............... 0800 2091

Norway ....................... 800 11 632

Poland ........................ 00800 353 1202

Portugal ...................... 050 553182

South Africa ............... 0800 994206

Spain........................... 900 95 35 33

Sweden ....................... 020 795 419

Switzerland................. 0800 556177

Turkey ........................ 0800 353 90275

United Kingdom ........ 0800 132990

Not Toll-Free Numbers:

Russia ......................... [phone]

Important Safety Instructions!Important Safety Instructions!

Important Safety Instructions!

Important Safety Instructions!Important Safety Instructions!

Please read this manual!
Veuillez lire ce manuel!
Bitte lesen Sie dieses Anleitungshandbuch!
¡Se ruega leer este manual de instrucciones!

This User's Manual provides safety, installation and operating instructions that will help you derive the fullest performance and
service life that the SymmetraTM Power Array has to offer.

PLEASE SAVE THIS USER'S MANUAL! It includes important instructions for the safe use of the SymmetraTM Power Array, and
for obtaining factory service should the proper operation of the system or the components come into question. Service or storage
issues may arise at a later date, and may require reference to this User's Manual, or to the technical support information that is
included in it.

CONSERVER CES INSTRUCTIONS! Cette notice contient des instructions importantes concernant la sécurité.

Radio Frequency Interference

NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the
FCC Rules and the Class A limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of
the Canadian Department of Communications. These limits are designed to provide reasonable protection against harmful inter­ference when the equipment is operated in a commercial environment. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the instruction 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.

Shielded cables must be used with this unit to ensure compliance with the Class A FCC limits.

WARNING: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the
users authority to operate the equipment.

Part #: 990-7779 Rev. 1

Revised 3/98

Limited Warranty

American Power Conversion (APC) warrants its products to be free from defects in materials and workmanship for a period of one
year from the date of purchase. Its obligation under this warranty is limited to repairing or replacing, at its own sole option, any
such defective products. To obtain service under warranty you must obtain a Returned Material Authorization (RMA) number
from APC or an APC service center. Products must be returned to APC or an APC service center with transportation charges
prepaid and must be accompanied by a brief description of the problem encountered and proof of date and place of purchase.
This warranty does not apply to equipment which has been damaged by accident, negligence, or mis-application or has been
altered or modified in any way. This warranty applies only to the original purchaser who must have properly registered the
product within 10 days of purchase.

EXCEPT AS PROVIDED HEREIN, AMERICAN POWER CONVERSION MAKES NO WARRANTIES, EXPRESS OR IMPLIED,
INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Some states do not
permit limitation or exclusion of implied warranties; therefore, the aforesaid limitation(s) or exclusion(s) may not apply to the
purchaser.

EXCEPT AS PROVIDED ABOVE, IN NO EVENT WILL APC BE LIABLE FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL,
OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF THIS PRODUCT, EVEN IF ADVISED OF THE POSSIBIL­ITY OF SUCH DAMAGE. Specifically, APC is not liable for any costs, such as lost profits or revenue, loss of equipment, loss of use
of equipment, loss of software, loss of data, costs of substitutes, claims by third parties, or otherwise. This warranty gives you
specific legal rights and you may also have other rights which vary from state to state.

Life Support Policy

As a general policy, American Power Conversion (APC) does not recommend the use of any of its products in life support appli­cations where failure or malfunction of the APC product can be reasonably expected to cause failure of the life support device or
to significantly affect its safety or effectiveness. APC does not recommend the use of any of its products in direct patient care. APC
will not knowingly sell its products for use in such applications unless it receives in writing assurances satisfactory to APC that (a)
the risks of injury or damage have been minimized, (b) the customer assumes all such risks, and (c) the liability of American Power
Conversion is adequately protected under the circumstances.

Examples of devices considered to be life support devices are neonatal oxygen analyzers, nerve stimulators (whether used for
anesthesia, pain relief, or other purposes), autotransfusion devices, blood pumps, defibrillators, arrhythmia detectors and alarms,
pacemakers, hemodialysis systems, peritoneal dialysis systems, neonatal ventilator incubators, ventilators for both adults and in­fants, anesthesia ventilators, infusion pumps, and any other device designated as critical by the U.S.F.D.A.

Hospital grade wiring devices and leakage current may be ordered as options on many APC UPS systems. APC does not claim that
units with this modification are certified or listed as Hospital Grade by APC or any other organization. Therefore these units do
not meet the requirements for use in direct patient care.

Entire contents copyright © 1998 American Power Conversion. All rights reserved; reproduction in whole or in part without
permission is prohibited. Symmetra, Power Array, SmartSlot, SmartCell and SNMP Adapter are trademarks of APC. Power-

Chute and PowerDoctor are registered trademarks of APC. All other trademarks are the property of their respective owners.

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INTRODUCTION

SAFETY INFORMATION

1. PHYSICAL REPRESENTATION

Theory of Operation ................................................................................................................. i

Modes of Operation .................................................................................................................. iii

Symbols Used In This Manual ......................................................................................... safety-1

Important Safety Instructions .......................................................................................... safety-1

The Power Array Frame ............................................................................................................ 1-1

PowerView User Interface ......................................................................................................... 1-2

Grill Covers ................................................................................................................................ 1-2

Power Module............................................................................................................................ 1-2

Battery Module .......................................................................................................................... 1-2

Main Intelligence Module (MIM) ........................................................................................... 1-3

Redundant Intelligence Module (RIM) ................................................................................... 1-3

Input Circuit Breaker ................................................................................................................ 1-3

Maintenance Bypass Switch ..................................................................................................... 1-3

Rear View of Power Array ......................................................................................................... 1-4

System Enable Switch ................................................................................................................ 1-4

Communication Interface Ports .............................................................................................. 1-4

SmartSlotTM Accessory Ports ..................................................................................................... 1-4

REPO/Input/Output Wiring Panels ........................................................................................ 1-4

Convenience Power Panel ......................................................................................................... 1-4

Extended Run Battery Frame Connector ................................................................................ 1-4

2. SITE PREPARATION

Space and Weight Considerations ........................................................................................... 2-1

Transporting Power Array to Installation Site ........................................................................ 2-1

Operating Conditions ............................................................................................................... 2-1

BTU Output ............................................................................................................................... 2-1

3. UNPACKING AND INSTALLING FRAME

Initial Inspection ....................................................................................................................... 3-1

Check For Damage .................................................................................................................... 3-1

Handling Considerations ......................................................................................................... 3-1

Move the Frame ......................................................................................................................... 3-1

Remove Packing Materials........................................................................................................ 3-2

Remove the Frame from the Pallet .......................................................................................... 3-2

Moving Battery & Power Modules .......................................................................................... 3-2

4. WIRING REQUIRMENTS & PROCEDURES

Wiring Overview ....................................................................................................................... 4-1

Input Wiring .............................................................................................................................. 4-2

Output Wiring ........................................................................................................................... 4-4

Remote Emergency Power Off Wiring .................................................................................... 4-5

Electrical Wiring Test/Checklist ............................................................................................... 4-6

5. SETTING UP THE POWER ARRAY

Overview of Setup ..................................................................................................................... 5-1

Frame Leveling Procedure ........................................................................................................ 5-1

Installing the Battery Modules ................................................................................................. 5-2

Installing the Power Modules ................................................................................................... 5-3

Installing the Main Intelligence Module (MIM) .................................................................... 5-4

Installing the Redundant Intelligence Module (RIM) ........................................................... 5-4

Installing the PowerView Interface .......................................................................................... 5-5

SmartSlotTM Interface Accessories ............................................................................................. 5-6

Installation Test/Checklist ........................................................................................................ 5-7

6. THE POWERVIEW USER INTERFACE

Overview .................................................................................................................................... 6-1

PowerView Functions ............................................................................................................... 6-1

PowerView LED Indicators ...................................................................................................... 6-2

Navigation Keys ......................................................................................................................... 6-2

Startup Screen ........................................................................................................................... 6-3

Top-Level Menu Screen ............................................................................................................ 6-3

Language Configuration ........................................................................................................... 6-4

7. CONFIGURING & OPERATING THE SYMMETRA

Introduction .............................................................................................................................. 7-1

Step #1: Powering the System ................................................................................................... 7-1

Step #2: Powering the Loads ..................................................................................................... 7-2

Step #3: Review Status Conditions .......................................................................................... 7-2

Step #4: Perform a Self Test ...................................................................................................... 7-4

Step #5: Configure Shutdown Parameters .............................................................................. 7-5

Step #6: Configure Alarms ........................................................................................................ 7-5

Step #7: Review Diagnostics Menu .......................................................................................... 7-6

Step #8: Review Logging Menu ................................................................................................ 7-6

8. MODULE REPLACEMENT

Module Failure Alarm Indicators .......................................................................................... 8-1

Technical Support and Obtaining a Replacement Module ................................................. 8-1

Battery Module Replacement Procedure .............................................................................. 8-2

Power Module Replacement Procedure ................................................................................ 8-3

Main Intelligence Module Replacement Procedure ............................................................. 8-4

Redundant Intelligence Module Replacement Procedure ................................................... 8-4

9. POWERVIEW INTERFACE MESSAGES

Start-Up Messages ................................................................................................................... 9-1

General Status Messages ......................................................................................................... 9-2

Module Failure Messages ........................................................................................................ 9-3

Threshold Alarm Messages ..................................................................................................... 9-3

Bypass Messages ...................................................................................................................... 9-3

General Fault Messages ........................................................................................................... 9-4

INDEX

Introduction

The APC SymmetraTM Power Array is a

scalable, redundant power protection sys-

tem for multiple servers and business

critical applications. This is an introduction

to the SymmetraTM Power Array.

MiniFrame

MasterFrame

Thank YThank Y

Thank Y

Thank YThank Y

ou!ou!

ou!

ou!ou!

Theory of OperationTheory of Operation

Theory of Operation

Theory of OperationTheory of Operation

Thank you for investing in the SymmetraTM Power Array. Please
read this User's Manual thoroughly before installing the sys­tem. It provides important information for using the
SymmetraTM safely and effectively.

TMTM

TM

SymmetraSymmetra

Symmetra

SymmetraSymmetra

The SymmetraTM is a high-performance, uninterruptible
power array system, designed for large-scale loads. It pro­vides conditioned, reliable AC power to load equipment, and
provides protection from power blackouts, brownouts, swells,
sags, surges and interference. The SymmetraTM Power Array
system is comprised of either a MiniFrame, or a MasterFrame,
and a variable set of modules. A MiniFrame system can be
configured to deliver a maximum output of 8kVA, and a
MasterFrame system can deliver a maximum of 16kVA.

TMTM

Overview Overview

Overview

Overview Overview

The SymmetraTM Power Array is comprised of three func­tional components: A power processing system, a battery
source, and a control/user interface system. The relationship
of these functional components is illustrated in figure I-2.

System Control

and Interface

Powerview User
Interface

Communication Communication

Power Processing

Charge

Communication

Card and

SmartSlots

TM

Battery Source

Fig I-1 MiniFrame and MasterFrame

Bypass

Switch

AC

IN

Fig I-2 Functional Diagram of a Symmetra

AC

OUT

TM

i

Power PrPower Pr

Power Pr

Power PrPower Pr

ocessing Systemocessing System

ocessing System

ocessing Systemocessing System

ContrContr

Contr

ContrContr

ol/User Interol/User Inter

ol/User Inter

ol/User Interol/User Inter

faceface

face

faceface

The power processing system delivers conditioned AC output
power with a low distortion sinewave. Under normal operat­ing conditions, power is received from the AC mains (utility)
power source, conditioned by the power processing system,
and delivered to the load equipment. In the event of an AC
mains power source failure, the power processing system re­ceives power from the battery source (battery modules), con­verts it to conditioned AC, and delivers it to the load equip­ment. When AC mains power is present, the power processing
system also maintains the battery source at full charge.

The power processing system in SymmetraTM is comprised of
one or more power modules. Each power module contains
the electronic components for a complete 4kVA UPS, including
the rectifier, charger and inverter. When two or more power
modules are present, they operate in parallel, sharing the load
equally.

By configuring the system with at least one more power mod­ule than is required to power the load (a redundant power
module), SymmetraTM can sustain a power module failure
and still deliver full power to the load equipment. The failed
module is identified by the control/user interface system, an
alarm is initiated to notify the user of the module failure, and
the hot-swappable module can be replaced by the user, with­out the need to power down the load equipment.

A SymmetraTM MiniFrame provides bays for up to three power
modules, and a MasterFrame provides bays for up to five.
This provides the full system capacity (8kVA and 16kVA re­spectively), plus one redundant power module.

The control/user interface system coordinates the operation
of the SymmetraTM and reports status conditions via several
user interface options. Functions performed by the control/
user interface component include module coordination and
state control, analysis and reporting of system status, and
reporting of alarm conditions.

Module Coordination & State Control - The Symmetra
incorporates a main intelligence module (MIM) that continu­ously monitors the system, and delivers data to both the
PowerView user interface, and to the communication ports.
The MIM coordinates the initial power up of the system, trans­fers it into and out of bypass mode, transfers the power source
between the mains AC power, and the battery source, and
coordinates shutdown operations.

System Status Monitoring - The MIM gathers data about the
system components and delivers it to both the PowerView
interface, and to the computer interface ports. System status
monitoring and reporting data include the current predicted
run time, the status of individual battery and power modules,
the input & output voltage, input & output voltage frequency,
and the size and status of the output load.

Alarm Condition Detection - The control/user interface sys­tem monitors the SymmetraTM for alarm conditions. If an
alarm condition is detected, the PowerView user interface ini­tiates an audible and visual alarm. Alarm conditions include
on-battery, low battery, module faults, overloads, loss of re­dundancy and a variety of other default and user defined events.
All possible alarm messages and the appropriate user responses
are provided in Chapter 9.

TM

BatterBatter

Batter

BatterBatter

The battery source is comprised of parallel, hot-swappable,
120V battery modules. These are housed in the Symmetra
frame, and in an optional XR Extension Battery frame.

A SymmetraTM MiniFrame provides bays for up to two bat­tery modules, and a MasterFrame provides bays for up to
four. Both of these frames can be connected to an XR Exten­sion Battery frame. Additional battery modules increase on­battery run time.

ii

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y Sour

y Soury Sour

cece

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cece

TM

Modes of OperationModes of Operation

Modes of Operation

Modes of OperationModes of Operation

The Power Array functions in one of four modes of operation
depending on user commands, the status of the AC mains
(utility) voltage, and the condition of the SymmetraTM itself.
The four modes are Load-Disconnect, On-Line, On-Battery,
and Bypass. The PowerView reports the operating mode.

Load-Disconnect Mode

In the load-disconnect mode, incoming mains (utility) power
is present and the system is internally powered, but no output
power is delivered to the load equipment. The Symmetra
enters the load-disconnect mode at the initial power up when
the system enable switch is switched to the on position. When
the system is operating on-line, and the load off  command
is entered in the PowerView interface, it returns to the load­disconnect mode. Figure I-3 illustrates power flow when the
system is operating in the load-disconnect mode.

TM

On-Line Operating Mode

The on-line operating mode is the normal operating mode.
When the system is in the on-line operating mode, the Power
Array receives AC mains (utility) power and delivers condi­tioned power to the load equipment. The Power Array main­tains proper battery charge, regulates the output voltage and
frequency, and protects the load from surges and electrical
noise. SymmetraTM will operate in this mode if it has been
commanded to turn the load on, the incoming utility voltage
is present and functioning properly, and there are no prevent­ing abnormal conditions such as an overload. See figure I-4
for a diagram of the power flow when the system is in the on­line operating mode.

System Control

and Interface

System Control

and Interface

Powerview User
Interface

Communication Communication

Power Processing Battery Source

Charge

Bypass

AC

IN

Switch

Communication

Card and

SmartSlots

AC

OUT

TM

Fig I-3 Load-Disconnect Operating Mode

Powerview User
Interface

Communication Communication

Power Processing Battery Source

Charge

Bypass

AC
IN

Switch

Communication

Card and

SmartSlots

AC

OUT

TM

Fig I-4 On-Line Operating Mode

iii

On-Battery Operating Mode

Bypass Operating Mode

When in the on-battery mode, the Power Array draws DC
power from the battery source, converts it to conditioned AC
power and delivers it to the load equipment. Symmetra

TM

typically enters this mode in the event of a mains (utility) power
failure. It will also operate in the on-battery mode during a
user initiated battery self test.

On-battery operation is limited in duration and is dependent
on the number of battery modules, their state of charge, and
the size of the load. SymmetraTM will remain in the on-battery
state until either the incoming utility power is restored or the
batteries are depleted. See figure I-5 for a diagram of power
flow when the system is in the on-battery mode.

System Control

and Interface

Powerview User
Interface

Communication Communication

Power Processing Battery Source

Discharge

Communication

Card and

SmartSlots

TM

When the SymmetraTM is in the bypass operating mode, the
system is bypassed and utility power is delivered directly to the
load. SymmetraTM is equipped with an automatic bypass func­tion to allow the system to automatically go into bypass mode,
and a manual maintenance bypass switch to allow a user to
manually bypass the system. Either can be used to place the
Power Array into bypass operating mode.

The SymmetraTM will automatically transfer to the bypass
operating mode when AC mains power is present, but the
load cannot be powered by the inverter. Events which may
cause this include overloads and failed non-redundant power
modules. The SymmetraTM will automatically return to the
on-line mode when the triggering event clears. Figure I-6 illus­trates power flow when the system is in the bypass mode.

System Control

and Interface

Powerview User
Interface

Communication Communication

Power Processing Battery Source

Communication

Card and

SmartSlots

TM

Charge

Bypass

AC

Switch

IN

Fig I-5 On-Battery Operating Mode

AC

OUT

AC

IN

Bypass

Switch

AC

OUT

Fig I-6 Bypass Operating Mode

iv

DefinitionsDefinitions

Definitions

DefinitionsDefinitions

Important InformationImportant Information

Important Information

Important InformationImportant Information

The following terms are used in this manual. Review these
definitions for a better understanding of the SymmetraTM:

Redundancy - Indicates the presence of one or more extra
power modules which allow the system to sustain a fault and
still provide protection to the load. To be fully redundant, the
system should be configured with a redundant intelligence
module, and at least one redundant power module.

Note: The number of battery modules determines the length of
the run time. While it is prudent to use the maximum number
of battery modules possible, they are not considered redundant.

N+1 Redundancy - Refers to the level of power module re­dundancy. N represents the number of power modules re­quired to power the load, and +1, +2, etc. represents the
number of extra power modules that are present.

For example, a 7.3 kVA load requires two power modules for
adequate protection. If the SymmetraTM is configured with
only two modules, it has an N+0, level of redundancy. (No
redundancy). If the system is configured with three power
modules, it has an N+1 redundancy. Depending on the size
of the load, SymmetraTM can be configured with 2, 3 or even 4
extra power modules. Respectively, it would have an N+2,
N+3, or N+4 level of redundancy.

Please read this User's Manual thoroughly before proceeding
with the installation of the SymmetraTM Power Array system.
It provides important information about installing and using
the SymmetraTM safely and effectively. Pay close attention to
text that is accompanied by a danger, or caution symbol. For
technical support, see the inside front cover of this manual.

Capacity - The maximum amount of output power that a
SymmetraTM system can deliver. The capacity is limited by the
lesser of the frame size, or the capacity of the installed power
modules.

For example, a MiniFrame (8kVA) with one power module
installed (4kVA) has a system capacity of 4kVA. A MasterFrame
(16kVA) with five power modules (20kVA) has a system ca­pacity of 16kVA.

Hot-swappable - The modules are hot-swappable means
they can be replaced safely by a user or service provider while
the load is still powered and fully protected.

v

vi

Safety Information

Important Safety Information

Read this safety information com-

pletely before installing or using the

SymmetraTM Power Array.

MiniFrame

MasterFrame

Safety

Symbols Used In This ManualSymbols Used In This Manual

Symbols Used In This Manual

Symbols Used In This ManualSymbols Used In This Manual

The following symbols appear in this User's Manual:

CAUTION/DANGER - Caution indicates risk of
bodily harm. Danger indicates that a risk of elec­trical shock is present and the associated proce­dures should be followed carefully.

STAND BY MODE - The system enable switch,
and the input circuit breaker use the stand by
mode. When either of these are switched to stand
by, the Power Array is disconnected from mains
(utility) input voltage. In this mode, the system
appears to be off, although the mains (utility)
power is still connected to the system. For this
reason, the standby mode is unsafe for servicing
the system. Always follow the five step Total Power
Off procedure before servicing the Power Array.
(See procedure at right.)

OFF POSITION - The maintenance bypass
switch is the only switch that can be placed in the
off position. When switched to the off posi­tion, the Power Array functions normally, receiv­ing mains (utility) power, and delivering condi­tioned power to the load equipment.

ON POSITION - All three switches (The sys­tem enable switch, the maintenance bypass switch
and the input circuit breaker) can be placed in the
on position. See the description for each of these
switches in Chapter 1.

SAFETY EARTH GROUND - Indicates the pri­mary safety ground.

IMPORIMPOR

IMPOR

IMPORIMPOR

n SAVE THIS USER MANUAL - This manual contains im-

CONSERVER CES INSTRUCTIONS. CETTE NOTICE

CONCERNANT LA SÉCURITÉ.

n Connection to the branch circuit (mains utility power

n Installation of the power and battery modules can be per-

n Operation of the SymmetraTM can be performed by any

n The protective earth conductor for the SymmetraTM car-

n FIVE STEP TOTAL POWER OFF PROCEDURE

TT

ANT SAFETY INSTRUCTIONSANT SAFETY INSTRUCTIONS

T

ANT SAFETY INSTRUCTIONS

TT

ANT SAFETY INSTRUCTIONSANT SAFETY INSTRUCTIONS

portant instructions that should be followed during in­stallation and maintenance of the Power Array, and for
installation or replacement of the battery and power mod­ules.

CONTIENT DES INSTUCTIONS IMPORTANTES

source) must be performed by a licensed electician.

formed by any individual with no previous technical ex­perience.

individual with no previous technical experience.

ries the leakage current from the load devices (computer
equipment). Therefore, the size of the conductor must be
at least as large as the wire required by IEC 950. IEC 950
states the following nominal cross-sectional areas:

- 2.5 mm2 for rated current between 17 & 25 A

- 6 mm2 for rated current between 33 & 40 A

- 10 mm2 for rated current between 41 & 63 A

- 16 mm2 for rated current between 64 & 80 A

To remove all power from the Power Array (Total Power
Off), the following events must occur in the order listed:

1. Set system enable switch to the stand by position.

2. Set input circuit breaker to the stand by position.

3. Remove all battery modules from the Power Array.

4. Disconnect XR external battery cabinet (if present).

5. Disconnect the mains/branch circuit breaker.

Safety-1

Safety

n CAUTION: Risk of Electrical Shock and Energy Hazard,

120V, 7.2 Ah battery module. Before replacing battery
modules, remove conductive jewelry such as chains, wrist
watches and rings. High short circuit current through
conductive materials could cause severe burns.

n CAUTION: Do not dispose of batteries or battery mod-

ules in a fire. The batteries may explode.

n CAUTION: Do not open or mutilate battery modules or

batteries. Released electrolyte is harmful to the skin and
eyes. It may be toxic.

n While battery modules are user replaceable, servicing of

the battery modules themselves should be performed or
supervised by personnel knowledgeable of batteries and
the required precautions. Keep unauthorized personnel
away from batteries.

n When replacing or adding battery modules to the Power

Array system, use only the SYBATT SymmetraTM Bat­tery Module. See the APC telephone numbers listed on
the inside cover of this manual for technical support, or
to obtain replacement modules.

Safety-2

Chapter One

Physical Representation

This chapter provides an illustrated descrip-

tion of the SymmetraTM Power Array system

and each of the modular components.

Before proceeding, examine the illustration

below. It depicts a MiniFrame (8kVA) and a

MasterFrame (16kVA) Power Array as they

appear during normal operating conditions.

MiniFrame

MasterFrame

The Power Array FrameThe Power Array Frame

The Power Array Frame

The Power Array FrameThe Power Array Frame

The SymmetraTM Power Array frame serves as the base for
the modular components of the system. The MiniFrame pro­vides bays for three power modules and two battery mod­ules. The MasterFrame provides bays for five power mod­ules and four battery modules. The bay at the top right houses
the main intelligence module (MIM) and redundant intelli­gence module (RIM).

Wiring input/output access panels and terminal blocks, a sys­tem enable switch, an input circuit breaker and a mainte­nance bypass switch are located near the bottom of the frame.
A MiniFrame with all battery and power module bays loaded
is depicted in figure 1-1. A MasterFrame with factory in­stalled MIM and RIM, and empty power and battery module
bays is depicted in figure 1-2.

Chapter 1 - Physical Representation

Five

Power

Module

Bays

Fig 1-2 An Empty MasterFrame (grill covers removed)

Main
Intelligence
and
Redundant
Intelligence
Modules

Four
Battery
Module
Bays

PowerView

Interface

Power

Modules

Input

Circuit

Breaker

Maintenance

Bypass

Switch

Redundant
Intelligence
Module

Main
Intelligence
Module

MiniFrame

Battery
Modules

Fig 1-1 A Fully Loaded MiniFrame (grill covers removed)

1-1

Chapter 1 - Physical Representation

PowerPower

Power

PowerPower

The PowerView incorporates a 4 x 20 alphanumeric LCD
screen with four navigation keys, four LED status indicators,
and an audible alarm. The display communicates with the
Power Array via a short RJ45 connector cable that is hardwired
into the intelligence modules bay. The PowerView can be
mounted on the front of the frame, stand on top of the frame,
or it can be installed at a remote location. A 6.1m (20') RJ45
cable is provided for remote installation.

The alphanumeric LCD screen displays system status, fault
reporting, and module diagnostics information. The navi­gation keys scroll through an elaborate menu. Chapter 6 pro­vides detailed information about the PowerView.

Alarm thresholds and parameters are set with the PowerView.
In the event of an alarm condition, the PowerView emits both
audible and visual alarm indicators.

view User Interview User Inter

view User Inter

view User Interview User Inter

faceface

face

faceface

Power ModulePower Module

Power Module

Power ModulePower Module

The power module is a self-contained, 4kVA UPS (without
batteries) housed inside a metal enclosure. A blind mating
connector at the rear of the module engages with a connec­tor inside the frame. Power modules are installed in the ver­tical column of bays at the left of the frame. These bays are
labeled L1, L2, L3, etc.

1-Blind Mating Connector, 2-Positioning Handle,

3-Cooling Fan Grill, 4-Alignment Runners,

5-Seating Tabs, 6-Flip Latch Micro Switch

1-LED Status Indicators, 2-LCD Screen, 3-Navigation Keys

Fig 1-3 PowerView User Interface

Grill CoversGrill Covers

Grill Covers

Grill CoversGrill Covers

Each level of the frame is equipped with a grill cover. These
covers are interchangeable, and snap securely onto the frame.
When removing, temporarily storing, and replacing grill cov­ers, use care to prevent them from being marred or scratched.

Fig 1-5 Power Module

In the event of a power module failure, the PowerView ini­tiates an audible alarm and displays an error message. The
power module is hot-swappable. Instructions for module
replacement are provided in Chapter 8.

BatterBatter

Batter

BatterBatter

The battery module is comprised of a series of ten 12V bat­teries housed inside a plastic enclosure. A blind mating con­nector at the rear of the module engages with a connector
inside the frame.

Battery modules are installed in the vertical column of bays
at the right of the frame. These are labeled R2, R3, R4, etc.
(R1 houses the intelligence modules.) The condition and
charge of each battery module is reported on the PowerView.
If a battery module fails, an alarm is initiated. Battery mod­ules are hot-swappable and user replaceable.

y Moduley Module

y Module

y Moduley Module

Fig 1-4 Front Grill Cover Removal and Replacement

1-2

Chapter 1 - Physical Representation

Redundant Intelligence Module (RIM)Redundant Intelligence Module (RIM)

Redundant Intelligence Module (RIM)

Redundant Intelligence Module (RIM)Redundant Intelligence Module (RIM)

The redundant intelligence module is a backup version of
the main intelligence module. It provides redundancy in the
event of a MIM failure or while a MIM is being replaced. If a
functioning MIM is present, the RIM can be removed and
replaced without placing the load at risk. The condition of
the RIM can be determined with the PowerView display.

1-Blind Mating Connector, 2-Retaining Flange,

3-Positioning Handle, 4-Runners

Fig 1-6 Battery Module

Main Intelligence Module (MIM)Main Intelligence Module (MIM)

Main Intelligence Module (MIM)

Main Intelligence Module (MIM)Main Intelligence Module (MIM)

The MIM is the computer for the Power Array system. It
gathers and processes data, including monitoring the condi­tion of each of the modules.

The PowerView functions as the user interface for the MIM,
and is used to access data, and to configure the system. When
a redundant intelligence module is installed and function­ing, the main intelligence module can be replaced without
placing the load at risk. The main intelligence module also
communicates with an external battery frame (if present).
The main intelligence and the redundant intelligence mod­ule are factory installed in the upper right bay of the frame.

Important: The MIM is always installed in the bottom rack,
and the RIM is always installed in the top rack in this bay.

Input CirInput Cir

Input Cir

Input CirInput Cir

The input circuit breaker protects the Power Array from ex­treme overloads. When switched to stand by, the Power
Array is disconnected from incoming (mains) voltage. When
switched to the on position, power flows from the mains
power source into the Power Array. Under normal operating
conditions, the input circuit breaker always remains in the
on position.

cuit Brcuit Br

cuit Br

cuit Brcuit Br

eakereaker

eaker

eakereaker

(Front of Frame)

Fig 1-9 Input Circuit Breaker & Maintenance Bypass Switch

Maintenance Bypass SwitchMaintenance Bypass Switch

Maintenance Bypass Switch

Maintenance Bypass SwitchMaintenance Bypass Switch

When switched to the on position, the maintenance bypass
switch bypasses the Power Array and causes the load equip­ment to be powered directly from the mains power source.
When it is switched to the off position, mains power flows
into the Power Array, and conditioned power is delivered to
the load equipment. The load equipment is unprotected when
the maintenance bypass switch is in the on position. Under
normal operating conditions, the maintenance bypass switch
remains in the off  position.

1-Blind Mating Connector, 2-Flip Latch Micro Switch,

3-Retaining Screw, 4-Positioning Handle, 5-Installation Rail

Fig 1-7 Main & Redundant Intelligence Module

1-3

Chapter 1 - Physical Representation

Rear VRear V

Rear V

Rear VRear V

The rear of a MiniFrame Power Array system is shown be­low. (The rear of a MasterFrame is identical.) Each of the
components is described in a section that follows:

iew of a Power Ariew of a Power Ar

iew of a Power Ar

iew of a Power Ariew of a Power Ar

rayray

ray

rayray

System Enable Switch

The system enable switch regulates power to the intelligence
modules. It does not power the load. When switched to the
on position, the Power Array enters the load-disconnect
operating mode. When switched to stand by, the intelli­gence modules are disconnected from the mains voltage, and
the system shuts down.

Note : The load is not powered until the power the load com­mand is entered into the PowerView user interface.

Communication Interface Ports

There are three interface ports: A Remote PowerView port
for the 6.1 m (20') RJ45 PowerView cable, a 9-pin computer
interface port for APC PowerChute Plus software, and a bat­tery communication port for an XR Extended Run Frame.

Smart Slots

APC manufactures a set of auxiliary user interface accesso­ries, called SmartSlot

TM

Accessory Ports

TM

devices. Four SmartSlotTM installa-

tion ports are provided. SmartSlotTM interface options include
the following:

n Protection and safe shutdown of multiple servers
n SNMP adaptor for accessing data via a network
n CallUPSTM - telephone notification of power event
n MeasureUPSTM - monitor environmental conditions
n Control and monitor Power Array via modem

Note: Use only SmartSlot
Compatible.

TM

devices labeled Symmetra

TM

REPO/Input/Output Wiring Access Panels

Wiring terminal blocks for input and output wiring and for
remote emergency power off (REPO) switch installations are
accessed through these panels.

Note: Wiring is to be installed by a qualified electrician only.

Convenience Power Panel

Eight IEC 320 C13 type power outlets are provided. The out­lets are arranged in two sets of four. Each set is equipped with
a circuit breaker.

Extended Run Battery Frame Connector

An optional XR Extended Run Battery Frame can be connected
to the Power Array via this connector. See the Users Manual
included with the XR Extended Run Battery Frame.

Communication

Interface

Ports

Convenience Power

Panel

System

Enable

Switch

XR Extended Run

Battery Frame

Connector

REPO Wiring

Access Panels

SmartSlot

Accessory
Ports

MiniFrame

Output
Wiring
Access
Panels

Input
Wiring
Access
Panels

TM

1-4

Fig 1-10 Rear View of a Mini Frame SymmetraTM Power Array System

Chapter Two

Site Preparation

This chapter provides the environmental and

structural requirements for a SymmetraTM Power

Array system. Included are the weights, dimen-

sions, and heat output of a functioning system.

MiniFrame

MasterFrame

Chapter 2 - Site Preparation

Space and WSpace and W

Space and W

Space and WSpace and W

The Power Array frame is 61cm (24") wide and 68.6cm (27")
deep. Refer to table 4-1 for the height and weight of fully
loaded systems.

Table 2-1 Height & Weight (Loaded w/ Modules)

Make sure there is adequate space and structural integrity to
support the fully loaded frame. Refer to figure 2-1. The weight
of the Power Array rests on four 3.8cm (1.5") diameter leveling
feet. Positions of the leveling feet are shown. When installing
the frame, allow 30.5cm (12") of clearance behind the frame
for adequate airflow. (Air flows in through the front of the
frame and out the back.) Allow 122cm (48") of clearance in
the front of the SymmetraTM to access the PowerView and to
install modules.

eight Considerationseight Considerations

eight Considerations

eight Considerationseight Considerations

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Operating Conditions

The Power Array is intended for installation in a temperature
controlled indoor area that is free of conductive contaminants.
The operating evironment must be clean, dry, and protected.
The atmosphere must be free of dust and corrosive fumes.
Adequate airflow must be provided for the operation of the
system. Make sure environmental conditions are within the
following parameters:

n Relative Humidity: 0 to 95%, non-condensing.
n Temperature: 0°C to 40°C (32°F to 104°F).
n Elevation: 0m to 3,048m (0ft to 10,000ft).
n Electro-Static Discharge (ESD) Susceptibility: The Power

Array and all modules are capable of withstanding
through air electro-static discharges up to an ampli­tude of +/-15kV and direct discharge electro-static dis­charges up to an amplitude of +/-8kV without failure,
abnormal operation, or degradation in performance. ESD
test methods conform to IEC 801-2.

BTU Output

Refer to table 2-2 for BTU output of a fully loaded Power
Array system. The BTU output is significantly higher while
the batteries are charging. Under normal operating condi­tions, battery recharge periods are relatively infrequent.

rH/UTBrH/UTB

rH/UTBrH/UTB

rH/UTBrH/UTB

rH/UTBrH/UTB

rH/UTB

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Front Clearance

Fig 2-1 System Footprint and Required Clearance

Transporting Power Array to Installation Site

When it is shipped, the Power Array frame is bolted to a cus­tom-designed pallet. The modules are stacked on either one
or two additional pallets. It is recommended that these pallets
be moved from the receiving dock to the installation area with
a pallet jack. Make sure there is enough space and structural
integrity to move these pallets.

emarFiniM314,3076,8

emarFretsaM628,6046,51

Table 2-2 BTU Output

Temporary Storage of Modules

The battery and power modules must be temporarily stored
until the frame is permanently installed. To preserve battery
life, always store batteries in a cool, dry place.

2-1