HP T750 User manual

HP UPS T750
User Guide
March 2006 (Third Edition)
Part Number 382249-003

© Copyright 2004, 2006 Hewlett-Packard Development Company, L.P.
The information contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the express
warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP
shall not be liable for technical or editorial errors or omissions contained herein.
Microsoft and Windows are U.S. registered trademarks of Microsoft Corporation.
March 2006 (Third Edition)
Part Number 382249-003
Audience assumptions
This guide is for the person who operates, configures, maintains, and troubleshoots UPSs. HP assumes
you are qualified in the servicing of high-voltage equipment and trained in recognizing hazards in
products with hazardous energy levels.

Contents 3
Contents
Component identification............................................................................................................... 5
UPS front panel......................................................................................................................................... 5
UPS front panel controls and LED indicators.................................................................................................. 6
UPS T750 NA/JPN rear panel.................................................................................................................... 7
UPS T750 INTL rear panel.......................................................................................................................... 8
Installation ................................................................................................................................... 9
Precautions............................................................................................................................................... 9
Electrical requirements ............................................................................................................................... 9
Checking the battery recharge date............................................................................................................. 9
Connecting the batteries........................................................................................................................... 10
Selecting the UPS voltage configuration...................................................................................................... 11
Connecting the host computer................................................................................................................... 12
Connecting the serial communications port .......................................................................................12
Connecting the USB communications port ......................................................................................... 13
Connecting the Network Transient Protectors............................................................................................... 13
Connecting the UPS to utility power ........................................................................................................... 13
Connecting devices to the UPS.................................................................................................................. 14
Charging the UPS batteries....................................................................................................................... 14
Powering up the UPS ............................................................................................................................... 15
UPS operations........................................................................................................................... 16
Initiating a self-test................................................................................................................................... 16
Silencing an audible alarm....................................................................................................................... 16
Audible alarm conditions................................................................................................................ 16
Powering down the UPS........................................................................................................................... 16
Power management .................................................................................................................... 18
HP Power Manager features ..................................................................................................................... 18
Maintenance.............................................................................................................................. 19
Updating the UPS firmware ...................................................................................................................... 19
Cleaning battery spills ............................................................................................................................. 19
Troubleshooting.......................................................................................................................... 20
UPS does not start ................................................................................................................................... 20
Audible alarm sounds .............................................................................................................................. 20
UPS operates on battery only.................................................................................................................... 20
UPS frequently switches between utility and battery power............................................................................ 21
UPS does not provide the expected backup time ......................................................................................... 21
UPS emits a slight clicking noise................................................................................................................ 21
Power LED flashes ................................................................................................................................... 21
Voltage Configuration LED is green ........................................................................................................... 21
Output Load Level LED is red or flashing red ............................................................................................... 22
Battery Charge LED is red......................................................................................................................... 22
Battery Warning LED is amber .................................................................................................................. 22
Site Wiring Fault LED is red ...................................................................................................................... 22
Specifications............................................................................................................................. 23
UPS physical specifications....................................................................................................................... 23
UPS input specifications ........................................................................................................................... 23
UPS output specifications.......................................................................................................................... 23

Contents 4
Power protection specifications ....................................................................................................... 23
Voltage specifications .................................................................................................................... 24
Output tolerance specifications........................................................................................................ 24
Output feature specifications........................................................................................................... 24
Battery specifications ............................................................................................................................... 24
Battery runtime........................................................................................................................................ 25
Environmental specifications ..................................................................................................................... 25
Spares....................................................................................................................................... 26
Ordering spares...................................................................................................................................... 26
UPS spare parts list.................................................................................................................................. 26
Hardware options ................................................................................................................................... 26
Technical support........................................................................................................................ 27
Before you contact HP.............................................................................................................................. 27
HP contact information............................................................................................................................. 27
Warranty information.................................................................................................................. 28
Limited warranty ..................................................................................................................................... 28
$250,000 Computer Load Protection Guarantee......................................................................................... 28
Pre-Failure Battery Warranty ..................................................................................................................... 28
Regulatory compliance notices ..................................................................................................... 30
Regulatory compliance identification numbers............................................................................................. 30
Federal Communications Commission notice............................................................................................... 30
FCC rating label............................................................................................................................ 30
Class A equipment......................................................................................................................... 31
Class B equipment......................................................................................................................... 31
Declaration of conformity for products marked with the FCC logo, United States only....................................... 31
Modifications.......................................................................................................................................... 32
Cables................................................................................................................................................... 32
Canadian notice (Avis Canadien).............................................................................................................. 32
European Union regulatory notice ............................................................................................................. 32
Japanese notice ...................................................................................................................................... 33
BSMI notice............................................................................................................................................ 33
Korean notice ......................................................................................................................................... 33
Battery replacement notice........................................................................................................................ 34
Power cord statement for Japan................................................................................................................. 34
Electrostatic discharge................................................................................................................. 35
Preventing electrostatic discharge.............................................................................................................. 35
Grounding methods to prevent electrostatic discharge.................................................................................. 35
Acronyms and abbreviations........................................................................................................ 36
Index......................................................................................................................................... 37

Component identification 5
Component identification
In this section
UPS front panel........................................................................................................................................ 5
UPS front panel controls and LED indicators................................................................................................. 6
UPS T750 NA/JPN rear panel................................................................................................................... 7
UPS T750 INTL rear panel......................................................................................................................... 8
UPS front panel
Item Description
1 Control buttons and LED display
2 Battery compartment

Component identification 6
UPS front panel controls and LED indicators
Item Description Function
1 Power On/Standby
button Turns the UPS power on and off, and places the UPS in Standby mode.1
2 Output Load Level LED Shows approximately how much of the UPS power capacity is used to
support the equipment connected to the output receptacles.
Red—Maximum load
Amber—Medium load
Green—Light load
3 Power LED Green—The UPS is on and supplying connected equipment with AC
power.
Flashing green—The UPS is operating from its internal batteries during a
blackout or severe brownout. If the blackout or brownout is prolonged,
save any open files and shut down the connected equipment.
4 Voltage Correction LED Green—The UPS is automatically correcting high or low AC voltage on
the utility line without the assistance of battery power. The UPS will emit a
slight clicking noise.
5 Battery Warning LED Amber—During a self-test, the UPS found that the batteries must be
recharged. Charge the batteries and repeat the self-test ("Initiating a self-
test" on page 16).

Component identification 7
Item Description Function
6 Battery Charge LED When the UPS is operating from utility power (the Power LED is green),
the Battery Charge LED indicates the approximate charge state of the
batteries:
Red—The batteries are beginning to charge.
Amber—The batteries are midway through charging.
Green—The batteries are fully charged.
When the UPS is operating on battery power during a blackout or severe
brownout (the Power LED is flashing green), the Battery Charge LED
indicates the approximate amount of remaining battery energy:
Red—The batteries have a low level of energy.
Amber—The batteries have a medium amount of energy.
Green—The batteries have a high amount of energy.
Periodically initiate a self-test ("Initiating a self-test" on page 16) to
determine the energy level of the batteries before a blackout or brownout
occurs.
7 Mute/Test button Silences UPS alarms and initiates a self-test ("Initiating a self-test" on
page 16).
1IMPORTANT: While in Standby mode, the UPS maintains the charge on the batteries, but no power is
available at the output receptacles. The UPS remains in Standby mode until an alternate mode is selected or
until utility power is removed.
UPS T750 NA/JPN rear panel
Item Description
1 Voltage configuration DIP switches
2 Serial communications port
3 USB communications port
4 Option slot
5 Network Transient Protector IN jack

Component identification 8
Item Description
6 Network Transient Protector OUT jack
7 Site Wiring Fault LED
8 Input power cord with NEMA 5-15 plug
9 Three NEMA 5-15 output receptacles for surge-only
protection
10 Three NEMA 5-15 output receptacles for surge and
battery backup protection
UPS T750 INTL rear panel
Item Description
1 Voltage configuration DIP switches
2 Serial communications port
3 USB communications port
4 Option slot
5 Network Transient Protector IN jack
6 Network Transient Protector OUT jack
7 Input power receptacle (IEC-320-C14) for country-
specific plug attachment
8 Six IEC-320-C13 output receptacles for surge and
battery backup protection

Installation 9
Installation
In this section
Precautions.............................................................................................................................................. 9
Electrical requirements .............................................................................................................................. 9
Checking the battery recharge date............................................................................................................ 9
Connecting the batteries.......................................................................................................................... 10
Selecting the UPS voltage configuration .................................................................................................... 11
Connecting the host computer.................................................................................................................. 12
Connecting the Network Transient Protectors ............................................................................................. 13
Connecting the UPS to utility power.......................................................................................................... 13
Connecting devices to the UPS................................................................................................................. 14
Charging the UPS batteries...................................................................................................................... 14
Powering up the UPS .............................................................................................................................. 15
Precautions
Save these instructions. This document contains important safety instructions that should be followed
during installation, operation, and maintenance of the UPS and batteries.
WARNING: A risk of personal injury from electric shock and hazardous energy levels
exists. The installation of options and routine maintenance and service of this product
must be performed by individuals who are knowledgeable about the procedures,
precautions, and hazards associated with AC power products.
WARNING: To prevent personal injury from earth conductor leakage current:
•Do not operate the UPS while disconnected from the utility power source.
•Disconnect load devices before disconnecting the UPS from the utility power source.
WARNING: To prevent personal injury, prepare the area and observe all materials
handling procedures when transporting the UPS. When fully assembled, the UPS weighs
13.6 kg (30 lb).
Electrical requirements
WARNING: To prevent fire or electric shock, install the unit in a temperature- and
humidity-controlled indoor environment, free of conductive contaminants.
Checking the battery recharge date
Before unpacking the UPS, check the date on the battery recharge date label that is affixed to the
shipping carton.

Installation 10
IMPORTANT: Do not use the battery if the recharge date has passed. If the date on the battery recharge
date label has passed without the battery being recharged, contact an HP authorized service representative
for directions.
Connecting the batteries
WARNING: The unit contains sealed lead-acid battery modules. To prevent fire or
chemical burns:
•Do not attempt to recharge batteries after removal from the unit.
•Do not disassemble, crush, or puncture the batteries.
•Do not short the external contacts of the batteries.
•Do not immerse the batteries in water.
•Do not expose to temperatures higher than 40°C (104°F).
WARNING: To prevent personal injury from hazardous energy:
•Remove watches, rings, or other metal objects.
•Use tools with insulated handles.
•Do not place tools or metal parts on top of batteries.
IMPORTANT: Before performing the following tasks, be sure that the unit is powered down and
disconnected from the utility power source.
1. Remove the UPS front bezel.

Installation 11
2. Connect the negative (black) lead to the negative battery terminal.
NOTE: A small amount of arcing may occur when connecting the batteries. This is normal and does not
damage the unit or present any safety concern.
3. Replace the UPS front bezel.
Selecting the UPS voltage configuration
Using a small tool, position the DIP switches according to the desired voltage configuration as identified
on the rear panel of the UPS and in the following table.
NOTE: An asterisk (*) indicates the default setting.
Output voltage Input voltage range DIP switch 2 DIP switch 1
T750 NA/JPN 100 V 90–106 V Down Up
110 V 99–116 V Up Down
120 V 108–127 V Up Up

Installation 12
Output voltage Input voltage range DIP switch 2 DIP switch 1
120 V* 108–127 V Down Down
T750 INTL 220 V 198–233 V Up Down
230 V 207–243 V Up Up
230 V* 207–243 V Down Down
240 V 216–254 V Down Up
Connecting the host computer
CAUTION: Use only the computer interface cable supplied with the UPS to connect the communications
port to the host computer.
Connect the UPS to a host computer using either the USB cable or the DB9 serial cable included with the
UPS. Install HP Power Manager software 4.0 or later on the host computer. See the HP website
(http://www.hp.com/go/rackandpower) to download the latest version of HP Power Manager.
NOTE: To install and configure the software, see the software user guide. The software user guide is
available for download from the HP website (http://www.hp.com/go/rackandpower).
Connecting the serial communications port

Installation 13
Connecting the USB communications port
Connecting the Network Transient Protectors
CAUTION: To avoid damaging the equipment, use the Network Transient Protector with a standard
telephone line only, not with a digital PBX.
To protect equipment against surges over a network data line:
1. Connect the network wall jack to the UPS Network Transient Protector IN jack.
2. Connect the equipment to the UPS Network Transient Protector OUT jack.
Connecting the UPS to utility power
WARNING: To prevent injury from electric shock or damage to the equipment:

Installation 14
•Plug the input line cord into a grounded (earthed) electrical outlet that is installed
near the equipment and is easily accessible.
•Do not disable the grounding plug on the input line cord. The grounding plug is an
important safety feature.
•Do not use extension cords.
1. Connect the input power cord from an intended load device to the IEC-320-C14 input power
receptacle on the UPS rear panel (INTL model only).
2. Connect the UPS power cord to a grounded utility power outlet. When the UPS is plugged in, the
batteries begin to charge and the output receptacles designated for surge-only protection provide
power (NA/JPN model only). Power to the output receptacles designated for surge and battery
backup is not available until the unit is powered up.
Connecting devices to the UPS
CAUTION: Do not plug laser printers into the UPS output receptacles designated for battery backup
protection. The instantaneous current drawn by this type of printer can overload the UPS. Connect all heavy-
draw devices to the output receptacles designated for surge-only protection (NA/JPN model only).
Before connecting devices, verify that the UPS will not overload by checking that the ratings of the devices
do not exceed the UPS capacity. If the equipment rating is listed in amps, multiply the number of amps by
120 to determine the VA.
After verifying that the UPS will not overload:
•Connect the device power cords to the output receptacles on the rear panel of the UPS (NA/JPN
model).
-or-
•Connect devices to the output receptacles on the rear panel of the UPS using the jumper cords
included with the UPS (INTL model).
Charging the UPS batteries
Allow the batteries to charge before putting the UPS into service.
IMPORTANT: Charge the batteries for at least 24 hours before supplying backup power to devices. The
batteries charge to:
•90% of their capacity within 4 hours
•100% of their capacity within 24 hours

Installation 15
Powering up the UPS
Press and hold the Power On/Standby button (1) until the UPS beeps. The Power LED illuminates solid
green, indicating that power is available at the UPS output receptacles.

UPS operations 16
UPS operations
In this section
Initiating a self-test.................................................................................................................................. 16
Silencing an audible alarm...................................................................................................................... 16
Powering down the UPS.......................................................................................................................... 16
Initiating a self-test
A self-test can be performed with equipment connected to the UPS output receptacles. To initiate a self-test,
press and hold the Mute/Test button until the alarm beeps two times.
CAUTION: Do not unplug the UPS to test the batteries. This action removes safe electrical grounding and
can introduce a damaging surge into the network connections.
The self-test lasts approximately 10 seconds as the UPS switches to battery power to test the load capacity
and battery charge. During the self-test, the Power LED flashes, the Output Load Level LED illuminates, and
the Battery Charge LED illuminates.
Silencing an audible alarm
Press the Mute/Test button.
IMPORTANT:
•Although the audible alarm silences, the condition that caused the alarm to sound might still exist.
•If a utility power failure caused the alarm (the Power LED is flashing green), the alarm silences after
power is restored.
Audible alarm conditions
Alarm type Condition Audible alarm Can alarm be
silenced?
Normal UPS operating from utility power No audible alarm N/A
UPS on battery UPS operating on battery power On–four short beeps Yes
Shutdown imminent Batteries nearly out of power On–continuous Yes
Battery problem Batteries must be recharged On–intermittent beeps Yes
Overload UPS power capacity exceeded On–continuous Yes
Powering down the UPS
1. Shut down all connected load devices.
2. Press the Power On/Standby button. Power to the output receptacles ceases.
3. Disconnect the UPS from utility power.

UPS operations 17
4. Wait at least 60 seconds for the UPS internal circuitry to discharge.

Power management 18
Power management
In this section
HP Power Manager features.................................................................................................................... 18
HP Power Manager features
HP Power Manager software ensures maximum power reliability of computer systems through
comprehensive control of UPSs. The easy-to-use browser interface enables novice users to configure and
manage power protection settings. To download the latest version of HP Power Manager software, see
the HP website (http://www.hp.com/go/rackandpower).
NOTE: To install and configure the software, see the software user guide. The software user guide is
available for download from the HP website (http://www.hp.com/go/rackandpower).
HP Power Manager:
•Does not require complex management systems, which simplifies deployment, configuration, and
management of UPS-protected environments.
•Manages a graceful shutdown of attached devices during utility power failures.
•Prioritizes the timing of attached load device shutdowns.
•Shuts down and reboots any UPS and attached load devices based on a user-specified schedule.
•Customizes alert generation with modifiable dialog boxes, command execution, and email and
broadcast messages.
•Monitors the status of the UPS and reports alarms.
•Displays a power log for analysis.

Maintenance 19
Maintenance
In this section
Updating the UPS firmware ..................................................................................................................... 19
Cleaning battery spills ............................................................................................................................ 19
Updating the UPS firmware
1. Power down all equipment connected to the UPS.
2. Connect the serial cable between the UPS and the computer that will be used to update the UPS
firmware. The computer must not be plugged in to the UPS and must run Microsoft® Windows®
2000, Microsoft® Windows® XP, or Microsoft® Windows® 2003.
3. Launch the firmware upgrade program.
NOTE: To download the latest version of UPS firmware, see the HP website
(http://www.hp.com/go/rackandpower).
4. Select the COM port to be used from the drop-down list.
5. Click Open.
6. Click Get UPS Version.
7. Click Browse to select the firmware file (file type *.s19).
8. Click Update. The UPS output turns off.
9. After the upgrade completes, click Close COM Port.
10. Power up the UPS ("Powering up the UPS" on page 15).
11. Power up the equipment connected to the UPS.
Cleaning battery spills
1. Put on acid-resistant boots, a chemical face shield, chemical splash goggles, and acid-resistant
gloves.
WARNING: Battery acid can severely damage your eyes and skin.
2. Remove combustible materials and all sources of ignition.
3. Stop the flow of material and contain or absorb small spills with dry sand, earth, or vermiculite.
4. Neutralize spilled battery acid with the special solutions contained in a spill kit or with a solution of
1 lb baking soda to 1 gallon of water.
5. Be sure the mixture is neutral, then collect the residue and place the residue in a drum or other
suitable container.
6. Properly dispose of hazardous waste.
WARNING: Do not allow discharge of unneutralized acid to reach the sewer.

Troubleshooting 20
Troubleshooting
In this section
UPS does not start .................................................................................................................................. 20
Audible alarm sounds............................................................................................................................. 20
UPS operates on battery only................................................................................................................... 20
UPS frequently switches between utility and battery power .......................................................................... 21
UPS does not provide the expected backup time........................................................................................ 21
UPS emits a slight clicking noise............................................................................................................... 21
Power LED flashes .................................................................................................................................. 21
Voltage Configuration LED is green .......................................................................................................... 21
Output Load Level LED is red or flashing red.............................................................................................. 22
Battery Charge LED is red ....................................................................................................................... 22
Battery Warning LED is amber................................................................................................................. 22
Site Wiring Fault LED is red ..................................................................................................................... 22
UPS does not start
Action:
1. Be sure that the power cord is plugged in to a utility power receptacle.
2. Check the power source at the utility power receptacle.
3. Allow the UPS batteries to charge for 24 hours.
Audible alarm sounds
Action:
1. Identify the LED associated with the audible alarm.
2. Check the troubleshooting information in this document to determine the cause of the alarm.
UPS operates on battery only
Action:
1. Save your work.
2. Power down the load devices connected to the UPS output receptacles.
3. Remove one or more load devices to reduce the power requirements.
4. Be sure the UPS configuration matches the utility voltage. Refer to "Selecting the UPS voltage
configuration (on page 11)."