Toshiba 4200FA Series User manual

TOSHIBA
4200FA
UNINTERRUPTIBLE POWER SYSTEM
THREE-PHASE 75 / 80 kVA UPS
MANUFACTURED IN THE U.S.A.
USERS MANUAL
Document Number: 56418-002
Date: December, 2004

TOSHIBA
4200FA
THREE-PHASE 75/80 kVA
UNINTERRUPTIBLE POWER SYSTEM
OPERATION MANUAL
FOR MODELS
T42#3F750XAXXN, T42#3F750FAXXN,
T42#3F800XAXXN, T42#3F800FAXXN.
TOSHIBA INTERNATIONAL CORPORATION
INDUSTRIAL DIVISION
13131 West Little York Rd., Houston, Texas 77041

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IMPORTANT NOTICE
UNINTERRUPTIBLE POWER SYSTEM
If additional information or technical assistance is required call Toshiba’s
Customer Service Department toll free at 1-800-231-1412, or write to: Toshiba
International Corporation, 13131 W. Little York Rd., Houston, TX 77041-9990.
Please complete the following information for your records. Unless otherwise
specified on the warranty card, the warranty period for the UPS or UPS part is
36 months from the shipment date (see TIC bill of lading).
Unless otherwise specified on the warranty card, the warranty period for a
UPS battery is 24 months from the shipment date (see TIC bill of lading).
Keep this manual with the UPS equipment.
Job Number:
Model Number:
Serial Number:
Application:
Shipping Date:
Date of Installation:
Inspected By:
The Instructions contained in this manual are not intended to cover all of
the details or variations in equipment or to provide for every possible
contingency to be met in connection with installation, operation, or
maintenance. Should further information be required or should particular
problems arise which are not covered sufficiently the matter should be
referred to the local Toshiba sales office.
The contents of this instruction manual shall not become a part of or
modify any prior or existing equipment, commitment, or relationship. The
sales contract contains the entire obligation of Toshiba International
Corporation’s UPS Division. The warranty contained in the contract
between the parties is the sole warranty of Toshiba International
Corporation’s UPS Division, and any statements contained herein do not
create new warranties or modify the existing warranty.
Any Electrical or mechanical modifications to this equipment
without prior written consent of Toshiba International
Corporation will void all warranties and may void UL/CUL
listing. Unauthorized modifications may also result in
equipment damage, personal injury, or loss of life.

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TABLE OF CONTENTS
IMPORTANT NOTICE.......................................................................................................2
TABLE OF CONTENTS....................................................................................................3
Purpose and Scope of Manual .......................................................................................5
Contacting Toshiba’s Customer Support Center..........................................................5
GENERAL SAFETY INSTRUCTIONS..............................................................................6
EQUIPMENT WARNING LABELS....................................................................................8
IMPORTANT SAFETY INSTRUCTIONS.........................................................................10
1.0 Product Description.............................................................................................13
1.1 Theory of Operation ...................................................................................................................13
1.2 Application and use....................................................................................................................13
1.3 Power Backup............................................................................................................................13
1.4 Power Conditioning....................................................................................................................13
2.0 Unpacking/Inspection/Storage/Disposal ............................................................14
2.1 Unpacking the new UPS equipment:...........................................................................................14
2.2 Inspection of the new UPS equipment ........................................................................................15
2.3 Storage of UPS equipment.........................................................................................................15
2.4 Disposal.....................................................................................................................................15
3.0 Precautions...........................................................................................................16
3.1 Installation Precautions................................................................................................................16
3.2 Pre-start Precautions..................................................................................................................17
3.3 Operating Precautions................................................................................................................17
4.0 UPS Connections .................................................................................................18
4.1 UPS Power and Control Connections........................................................................................18
4.1.1...Recommended Wire Size and Tightening Torque For UPS Input and Output Terminals.........19
4.1.2...Power Connection Cable Routing..........................................................................................20
4.1.3...Dual Input Configuration........................................................................................................28
4.2 Control Circuit and External Battery Interface Connections.........................................................29
4.2.1...Recommended Wire Size and Tightening Torque UPS Control and Battery Interface.............29
4.3 Communication Interface............................................................................................................30
4.3.1...Remote Contact ....................................................................................................................30
4.3.2...RS-232C ...............................................................................................................................31
4.3.3...UPS Shutdown (via RS-232C)...............................................................................................31
5.0 Specifications.......................................................................................................32
5.1 Specifications – 4200FA 75kVA with Internal Transformer..........................................................32
5.2 Specifications – 4200FA 75kVA without Internal Transformer.....................................................33
5.3 Specifications – 4200FA 80kVA with Internal Transformer..........................................................34
5.4 Specifications – 4200FA 80kVA without Internal Transformer.....................................................35
6.0 Operating the UPS................................................................................................36
6.1 Operating the UPS.....................................................................................................................36
6.1.1...AC Input Mode (normal operation).........................................................................................36
6.1.2...Circuit-bypass Mode..............................................................................................................36
6.1.3...Battery Backup Mode............................................................................................................37
6.2 Battery Backup Time and Discharge Process .............................................................................38
6.3 Battery Low Voltage Tolerances.................................................................................................38
6.4 Battery Recharging.....................................................................................................................39
6.5 Front Panel Layout (All Units).....................................................................................................40
6.6 EPO (Emergency Power Off) Function .......................................................................................41
6.7 Audible Alarm Functions.............................................................................................................41
6.8 Light Emitting Diode (LED) Functions.........................................................................................42
6.8.1...Light Emitting Diode (LED) System Status.............................................................................42
6.9 Liquid Crystal Display (LCD) Functions.......................................................................................43

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6.9.1...Line-1 System Messages......................................................................................................43
6.9.2...Line-2 System Fault Messages .............................................................................................43
6.9.3...Line-3 System Messages......................................................................................................43
6.9.4...Line-4 System Messages......................................................................................................44
6.10 Initial Battery Charge .................................................................................................................45
6.11 Start-up Procedure.....................................................................................................................46
6.12 Shutdown Procedure..................................................................................................................47
6.13 Keypad Overview.......................................................................................................................48
6.14 Key Functions............................................................................................................................49
6.14.1.MONI....................................................................................................................................49
6.14.2.IN..........................................................................................................................................49
6.14.3.OUT......................................................................................................................................49
6.14.4.BATT Key.............................................................................................................................50
6.14.5.MENU, F1, ENTER, UP, & DOWN Keys ...............................................................................50
6.14.6.BATT TEST Key................................................................................................................... 50
6.14.7.BUZZ STOP Key...................................................................................................................51
6.14.8.RESET Key ..........................................................................................................................51
6.15 Menu Data Screens................................................................................................................... 52
6.15.1.Settings for Calendar and Clock............................................................................................52
6.15.2.Adjusting Buzzer Volume......................................................................................................52
6.15.3.Settings for Display Duration.................................................................................................53
6.15.4.Run Switch Select.................................................................................................................53
6.15.5.Serial Com Station Address .................................................................................................. 54
6.15.6.Output Voltage Adjustment ...................................................................................................54
6.15.7.Charge Mode Select .............................................................................................................55
6.15.8.Reset to Default Settings.......................................................................................................55
6.16 Overload Operation....................................................................................................................56
6.17 Backup History & Fault History...................................................................................................57
7.0 UPS Protection System........................................................................................59
7.1 System Protection Features.......................................................................................................59
7.2 System Protection Functions......................................................................................................59
8.0 Preventive and Scheduled Maintenance / Part Replacement............................60
8.1 Preventive Maintenance.............................................................................................................60
8.2 Parts Replacement ....................................................................................................................60
9.0 External Dimensions / Shipping Weights ...........................................................61
9.1 External Dimensions..................................................................................................................61
9.2 Shipping Dimensions.................................................................................................................62
9.3 Shipping Weights.......................................................................................................................62

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Purpose and Scope of Manual
This manual provides information on how to safely install, operate, and maintain your TIC power electronics
product. This manual includes a section on General Safety Instructions that describes the warning labels
and symbols that are used throughout the manual. Read the manual completely before installing,
operating, or performing maintenance on this equipment.
This manual and the accompanying drawings should be considered a permanent part of the equipment and
should be readily available for reference and review. Dimensions shown in the manual are in metric and/or
the English equivalent.
Toshiba International Corporation reserves the right, without prior notice, to update information, make
product changes, or to discontinue any product or service identified in this publication.
TOSHIBA is a registered trademark of the Toshiba Corporation. All other product or trade references
appearing in this manual are registered trademarks of their respective owners.
Toshiba International Corporation (TIC) shall not be liable for technical or editorial omissions or
mistakes in this manual. Nor shall it be liable for incidental or consequential damages resulting
from the use of information contained in this manual.
This manual is copyrighted. No part of this manual may be photocopied or reproduced in any form without
the prior written consent of Toshiba International Corporation.
© Copyright 2004 Toshiba International Corporation.
All rights reserved.
Printed in the U.S.A.
Contacting Toshiba’s Customer Support Center
Toshiba’s Customer Support Center can be contacted to obtain help in resolving any Uninterruptible
Power System problem that you may experience or to provide application information.
The center is open from 8 a.m. to 5 p.m. (CST), Monday through Friday. The Support Center’s toll free
number is US [phone]/Fax [phone].
You may contact Toshiba by writing to:
Toshiba International Corporation
13131 West Little York Road
Houston Texas 77041-9990
Attn: UPS Product Manager
For further information on Toshiba’s products and services, please visit our website at
www.tic.toshiba.com.

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GENERAL SAFETY INSTRUCTIONS
DO NOT attempt to install, operate, maintain or dispose of this equipment until you have read and
understood all of the product safety information and directions that are contained in this manual.
Safety Alert Symbol
The Safety Alert Symbol indicates that a potential personal injury hazard exists. The symbol is comprised
of an equilateral triangle enclosing an exclamation mark.
Signal Words
Listed below are the signal words that are used throughout this manual followed by their descriptions and
associated symbols. When the words DANGER, WARNING and ATTENTION are used in this manual they
will be followed by important safety information that must be carefully adhered to.
Warnings in this manual may appear in any of the following ways:
1) Danger warning
─ The danger symbol is an exclamation mark enclosed in a triangle, which
precedes the word “DANGER.” The Danger warning symbol is used to indicate situations,
locations, and conditions that exist and will cause serious injury or death.
DANGER
2) Caution warning ─ The caution symbol is an exclamation mark enclosed in a triangle, which
precedes the word “CAUTION.” The Caution warning symbol is used to indicate situations and
conditions that can cause operator injury and/or equipment damage.
CAUTION
3) Attention warning ─ The attention warning symbol is an exclamation mark enclosed in a
triangle which precedes the word “ATTENTION.” The Attention warning symbol is used to
indicate situations and conditions that can cause operator injury and/or equipment damage.
ATTENTION
Other warning symbols may appear along with the Danger and Caution symbol and are used to specify
special hazards. These warnings describe particular areas where special care and/or procedures are
required in order to prevent serious injury and possible death.
1) Electrical warning
─ The electrical warning symbol is a lighting bolt enclosed in a triangle. The
Electrical warning symbol is used to indicate high voltage locations and conditions that may
cause serious injury or death if the proper precautions are not observed.
2) Explosion warning
─ The explosion warning symbol is an explosion image enclosed in a
triangle. The Explosion warning symbol is used to indicate locations and conditions where

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molten exploding parts that may cause serious injury or death if the proper precautions are not
observed.

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EQUIPMENT WARNING LABELS
DO NOT attempt to install, operate, maintain or dispose of this equipment until you have read and
understood all of the product warnings and user directions that are contained in this instruction manual.
Shown below are examples of warning labels that may be found attached to the equipment. DO NOT
remove or cover any of the labels. If the labels are damaged or if additional labels are required, contact
your Toshiba representative for additional labels.
The following are examples of the warning labels that may be found on the equipment. The labels are there
to provide useful information or to indicate an imminently hazardous situation that may result in serious
injury, severe property and equipment damage, or death if the instructions are not followed.

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IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This manual contains important instructions
that should be followed during the
installation, operation, and maintenance of the UPS and its batteries. Turn off, lockout, and tagout all
power sources before proceeding to connect the power wiring to the equipment or when performing
maintenance. Hardwire type UPS units are not equipped with an over-current protection device nor an
output disconnect for the AC output. Therefore, a circuit breaker should be provided by the user
between the UPS output and the load input. This device should be rated as follows:
Device Type 75kVA 80kVA
Rated Output 208/120VAC 208/120VAC
Device Rating 240V, 270A 240V, 300A
The maximum ambient temperature in which the UPS unit should be operated is 40°C (104°F).
The nominal battery voltage is 288VDC.
Only a qualified Toshiba Representative who is knowledgeable in batteries and the required precautions
should only perform battery servicing. Keep unauthorized personnel away from batteries. To arrange for
battery replacement, contact your nearest Toshiba authorized service center.
Qualified Personnel ONLY
A Qualified Person is one that has the skills and knowledge relating the construction, installation, operation
and maintenance of the electrical equipment and has received safety training on the hazards involved
(Refer to the latest edition of NFPA 70E for additional safety requirements).
Qualified Personnel Shall:
1) Have carefully read the entire operation manual.
2) Be trained and authorized to safely energize, de-energize, ground, lockout/tagout circuits and
equipment, and clear faults in accordance with established safety practices.
3) Be trained in the proper care and use of protective equipment such as safety shoes, rubber gloves,
hard hats, safety glasses, face shields, flash clothing, etc., in accordance with established safety
practices.
4) Be trained in rendering first aid.
5) Be knowledgeable of batteries and the required precautions.
For further information of workplace safety visit www.osha.gov.
Refer to the Battery System Manual when scheduling battery maintenance or battery replacement.
DANGER Misuse of this equipment could result in injury and equipment damage.
In no event will Toshiba Corporation be responsible or liable for direct,
indirect, or consequential damage or injury that may result from the use of this equipment.
CAUTION Do not dispose of the batteries in a fire. The batteries may
explode.
CAUTION Do not open or mutilate the batteries. Released electrolyte is toxic and
harmful to the eyes and skin.

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CAUTION This unit contains sealed lead acid batteries. Lack of preventative
maintenance could result in batteries exploding and emitting gasses
and/or flame. An authorized technician must perform annual preventative maintenance.
CAUTION Failure to replace a battery before it becomes exhausted may cause
the case to crack; possibly releasing electrolyte from the battery
resulting in secondary faults such as odor, smoke, and fire.
CAUTION Only personnel knowledgeable of batteries and the required
precautions should perform installation and servicing of batteries. Keep
unauthorized personnel away from the batteries.
CAUTION Proper maintenance to the battery system of this unit must be done by
a qualified service technician. This is essential to the safety and
reliability of your UPS system. Refer to service manual.
A battery can present a risk of electrical shock and high short
DANGER circuit current. The following precautions should be observed
when working with batteries:
TO BE PERFORMED BY QUALIFIED PERSONNEL ONLY!
1) Verify that the UPS is off and is disconnected from the power source.
2) Remove watches, rings, or other metal objects.
3) Use tools with insulated handles to prevent inadvertent shorts.
4) Wear rubber gloves and boots.
5) Do not place tools or metal parts on top of the batteries.
6) Determine if the battery is inadvertently grounded. If inadvertently grounded, remove
source of ground. Contact with any part of a grounded battery can result in
electrical shock. The likelihood of such shock will be reduced if such grounds are
removed during installation and maintenance.
7) Verify circuit polarities prior to making connections.
8) Disconnect charging source and load prior to connecting or disconnecting terminals.
9) VRLA batteries contain an explosive mixture of hydrogen gas. Do not smoke, or create a flame
or spark in the immediate area of the batteries. This includes static electricity from the body.
10) Do not attempt to open the batteries in order to add water or sample the specific gravity of the
electrolyte. The batteries are valve-regulated lead acid type and such servicing is not possible
without damaging the battery.
11) Use proper lifting means when moving batteries and wear all appropriate safety clothing and
equipment.
12) Do not dispose of lead acid batteries except through channels in accordance with local, state
and federal regulations.

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INSTRUCTIONS IMPORTANTES CONCERNANT
LA SÉCURITÉ
CONSERVER CES INSTRUCTIONS Cette notice contient des
instructions importantes
concernant la sécurté
ATTENTION Un battery puet présenter un risque de choc électrique, de brûlure
par transfert d’ énergie.
ATTENTION L’élimination des batteries est règlementèe. Consultar les codes
locaux à cet effet

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1.0 Product Description
1.1 Theory of Operation
An Uninterruptible Power System (UPS) is a system that is installed between the commercial
power and the load equipment. The UPS provides steady AC output power during commercial
power fluctuations and interruptions.
During normal operation the UPS receives commercial AC power and removes any high
voltage spikes and transients caused by switching or faults on the main utility. The result of this
process is maximum power conditioning and regulation of the power applied to the load.
If the AC power supplied to the UPS drops below a specified voltage level, the batteries of the
UPS are automatically switched on and will supply power to the load. This insures that the
loads connected to the UPS continue to receive power with no interruption. This power is
provided for a period long enough to ensure that the load can be shut down in an orderly
fashion. This prevents loss of data and possible damage to the hardware or software.
When AC input power becomes available again, normal system operation resumes and the
UPS battery-charge cycle resumes.
1.2 Application and use
Toshiba's 4200FA Uninterruptible Power Systems (UPS) provide continuous computer grade
AC power in a compact and efficient high-performance unit. The UPS assures safe, reliable
operation of critical office equipment, ranging from personal computers to mini-computers to
local area networks (LAN). All units feature an audible alarm that sounds if the battery voltage
drops below standard during use. This is an additional aid to help in retaining the valuable
office data banks, and all units allow for computer interfacing.
1.3 Power Backup
During an electrical power failure the batteries of the UPS unit supply DC power to the inverter
that supports the load equipment automatically, without interruption. For example, when used
to support a computer, a UPS backup assures additional time to complete your activity and
store data after a power failure occurs.
1.4 Power Conditioning
While commercial power is present, the UPS supplies conditioned power to the load while
maintaining the batteries in a charged condition. The UPS protects the connected load against
the normal everyday problems associated with heavy use of raw commercial power, including
power sags, surges, signal interference, and spikes. This protection keeps power-line problems
from reaching your load where it can cause equipment to operate erratically, or damage
software or hardware.

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2.0 Unpacking/Inspection/Storage/Disposal
2.1 Unpacking the UPS Equipment
1) Upon receipt of the UPS, a careful inspection for shipping damage should be made.
2) For units shipped in a crate, remove the screws that attach the shipping crate panels to
each other and to the pallet. Remove the crate and foam packing material.
3) Unbolt the unit from the shipping pallet.
4) Lift the UPS from the pallet using a forklift that has sufficient capacity. Approach the
UPS only from the front or rear.

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2.2 UPS Equipment Inspection
UPS Equipment Inspection
Upon receipt of the UPS, a careful inspection for shipping damage should be made. Use
caution when removing unit from pallet. Refer to labels or documentation attached to
packing material.
After Uncrating
1) Check the unit for loose, broken, bent or other damaged parts. If damage has occurred
during shipment, keep all original crating and packing materials for return to the
shipping agent. The equipment warranty will not apply to units that are damaged
during shipment.
2) Check to see that the rated capacity and the model number specified on the nameplate
conform to the order specifications.
2.3 Storage of the UPS Equipment
If the UPS equipment is to be subject to long or short-term storage, the following guidelines
should be used.
Avoid: 1) Storage in sites subject to extreme changes in temperature or high humidity.
2) Storage in sites subject to exposure of high levels of dust or metal particles.
3) Storage on inclined floor surfaces or in sites subject to excessive vibration.
Before Storing:
1) Allow the UPS to be operated for 24 hours to ensure that the batteries are fully
charged.
2) Stop the unit (see Stopping the UPS in section 6.12).
3) Place the MCCB switch of the UPS in the OFF position (see section 4.1for
location).
Storing: 1) Store within the temperature range of –20°C to 40°C (-4°F to 104°F).
2) For best results, store the UPS in the original shipping container and place on
a wood or metal pallet.
3) The optimum storage temperature is 21°C (70°F). Higher ambient
temperatures cause UPS batteries to require recharging more frequently.
After Storing:
1) If stored in an ambient temperature less than 20°C (68°F); recharge the
batteries every 9 months.
2) If stored in an ambient temperature of 20°C to 30°C (68°F to 86°F); recharge
the batteries every 6 months.
3) If stored in an ambient temperature of 30°C to 40°C (86°F to 104°F); recharge
the batteries every 3 months.
2.4 Disposal
Please contact your state environmental agency for details on proper disposal of electrical
components and packaging in your particular area.
ATTENTION
It is illegal to dump lead-acid batteries in landfills or dispose
of improperly. Please help our Earth by contacting the
environmental protection agencies in your area, the battery
manufacturer, or call Toshiba toll-free at [phone] for more
information about recycling batteries.

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3.0 Precautions
Because of the external dimensions of the 4200FA UPS and the way the outer panels are to
be removed; only a minimum amount of space around the unit is required for ventilation and
maintenance access. Figure 3.1 shows the minimum clearances required for proper UPS
installation.
3.1 Installation Precautions
1) Install the UPS in a stable, level, and upright position that is free of vibration.
2) Install the UPS in a well ventilated location with the required allowances for ventilation
and servicing as shown in figure 3.1.
3) Install the UPS where the ambient
temperature is within the correct
operating range (see the UPS
Specifications in section 5.1). Verify that
the ventilation and air conditioning
system at the site is capable of
removing the heat generated by the
UPS unit (see Section, 5.1
Specifications, "Environment"). Ambient
temperature range for operating the
UPS is 0°C – 40°C (32°F – 104°F);
25°C (77°F) is the recommended
operating temperature for maximum
battery life.
4) Do not install the UPS in a location that
is subject to high humidity.
5) Do not allow the UPS to be exposed to
direct sunlight.
6) Do not install the UPS in areas that are
subject to contamination such as high
levels of airborne dust, metal particles,
or flammable gasses.
7) Avoid installation near sources of
electrical noise and always ensure that
the earth ground is intact to prevent
electrical shock and help prevent
electrical noise.
8) Do not install the UPS in an area that
may expose the UPS to water or that
may allow any foreign matter to get
inside.
9) This UPS generates and radiates radio-
frequency energy during operation.
There is no guarantee that the UPS will
not influence some sensitive devices
that are operating close by. If such
interference is experienced, the UPS
should be installed farther away from
the affected equipment and/or powered
from a different source than the affected
equipment.
10) The user should provide output over
current protection for hardwired UPS
versions. See Safety Instructions on
page 10 for the correct device rating. Figure 3.1
FRONT
28” (700 mm)
REAR
0” (0mm)
LEFT
0” (0mm)
TOP
22” (550 mm)
RIGHT
0” (0mm)

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11) After ensuring that all power sources are turned off and isolated in accordance with
established lockout/tagout procedures, connect power source wiring of the correct
voltage to the input terminals of the UPS. Connect the output terminals of the UPS to an
applicable load type application (refer to NEC Article 300 – Wiring Methods and Article
310 – Conductors For General Wiring). Size the branch circuit conductors in accordance
with NEC table 310.16.
3.2 Pre-start Precautions
Before connecting the UPS to a power source; move the MCCB switch (ON/OFF) to the OFF
position and move the operation RUN/STOP key switch, on the front panel (See Section 6.5
for location), to the STOP position.
3.3 Operating Precautions
1) The UPS should not be powered up until the entire Operation Manual has been read.
2) The input power source voltage must be within +10% to -30% of the rated input voltage.
The input frequency must be within the rated input frequency range. Voltages and
frequencies outside of the permissible range may activate the internal protection device.
3) The UPS should not be used with a load that has a rated input greater than the rated
UPS output.
4) Do not use the UPS to provide power to motors that require high starting current or a
long starting time such as vacuum cleaners or machine tools (over sizing for locked rotor
current required).
5) Do not insert metal objects or combustible materials in the ventilation slots of the UPS.
6) Do not place, hang, or paste any objects on the top or on the exterior surfaces of the
UPS.
7) The capacitors of the UPS maintain a residual charge for a while after turning off the
UPS. The required discharge time for each UPS typeform is provided via a cabinet label
and a CHARGE LED. Wait for at least the minimum time indicated on the label and
ensure that the CHARGE LED has gone out before removing the front panel of the UPS
once the UPS power has been turned off.
8) Do not attempt to disassemble, modify, or repair the UPS. Call your Toshiba sales
representative for repair information.
9) Turn the power on only after attaching ALL the covers and DO NOT remove any covers
of the UPS when the power is on.
10) If the UPS should emit smoke or an unusual odor or sound, turn the power off
immediately.
11) The heat sink and other components may become extremely hot to the touch. Allow the
unit to cool before coming into contact with these items.
12) Warning signs should be placed on or near the load to let people know that the load is
being powered by the UPS.
13) Additional warnings and notifications shall be posted at the equipment installation
location as deemed required by Qualified Personnel.
CAUTION When the UPS is in the Inverter mode, turning the breaker to the OFF
position will cause the unit to go into the battery backup mode. The
UPS will continue to provide power to the load. The unit must be in Bypass mode and then
the breaker turned to the OFF position for the UPS to shut down power to the load.
CAUTION Do not EPO (Emergency Power OFF) the UPS and then reset the
breaker until the UPS has been fully discharged. The UPS could be
damaged if the unit is not fully powered down before the breaker is
reset.

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4.0 UPS Connections
4.1 UPS Power and Control Connections
The following illustration shows the wiring connections to the input and output termination
points and the Control Circuit Terminal Blocks for the 4200FA 75/80 kVA UPS.