Tesla TI1000 GPU-24 UAV User manual

Tesla™TI1000 GPU-24 UAV
User Manual
Built Smart...Proven Tough
Power Anytime, Anywhere
Tesla Industries, Inc.
101 Centerpoint Blvd.
New Castle, DE 19720
[phone] Phone
[phone] Fax
www.teslaind.com

TI1000 GPU-24 UAV
NOTE: All users must read this entire manual prior
to operating the TI1000 GPU-24 UAV.
The TI1000 GPU-24 UAV is a limited maintenance-free and sealed unit. No repairs are authorized.
Warranty will be voided if unit is tampered with in any way, or if unauthorized repairs are made. For
technical support please contact:
TESLA™ INDUSTRIES INCORPORATED
101 CENTERPOINT BLVD.
CENTERPOINT INDUSTRIAL PARK
NEW CASTLE, DELAWARE 19720
PHONE: [phone]
FAX: [phone]
WEBSITE: www.teslaind.com
EMAIL: [e-mail]
Improper use or failure to follow instructions in this user manual can result in unit damage and/or injury or
death by electrical shock.
Any attempts to open or examine the inside of the TI1000 GPU-24 UAV via a tool or device (borescope,
probe, etc.) can result in unit failure and/or injury by electrical shock. This GPU is maintenance free and
should not be opened or disassembled for any reason.
Always protect the unit from short circuit.
Shipping Hazards: The TI1000 GPU-24 UAV contains sealed, dry cell rechargeable batteries that do not pose
a shipping hazard.
No part of this manual may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying, recording, or any information storage and retrieval system, without
prior written permission from Tesla™ Industries, Inc.
Copyright © 2015 by Tesla™ Industries, Incorporated. All rights reserved.
Shock Hazard Potential
CAUTION
07-13-15

Form #: SDS 853027
Revised: 05/14/15
Supersedes: NEW
ECO #: 1001584
I. PRODUCT IDENTIFICATION
Chemical Trade Name (as used on label): Chemical Family/Classification:
Tesla™ Industries, Inc.
Sealed Lead Battery
Synonyms:
Sealed Lead Acid Battery, VRLA Battery Telephone:
For information, contact Tesla™ Industries, Inc.
Manufacturer's Name/Address:
Customer Service Dept. at 302-324-8910
Tesla™ Industries, Inc.
101 Centerpoint Blvd.
24-Hour Emergency Response Contact:
New Castle, DE 19720-4180
CHEMTREC DOMESTIC: 800-424-9300 CHEMTREC INT'L: 703-527-3877
II GHS HAZRDS IDENTFICATION
Acute Toxicity
(Oral/Dermal/Inhalation) Category 4
Skin Corrosion/Irritation Category 1A
Eye Damage Category 1
Reproductive Category 1A
Carcinogenicity (lead compounds) Category 1B
Carcinogenicity (acid mist) Category 1A
Specific Target Organ Toxicity
(repeated exposure) Category 2
GHS LABEL:
Hazard Statements Precautionary Statements
DANGER! Wash thoroughly after handling.
Causes severe skin burns and eye damage. Do not eat, drink or smoke when using this product.
Causes serious eye damage. Wear protective gloves/protective clothing, eye protection/face protection.
May damage fertility or the unborn child if ingested or Avoid breathing dust/fume/gas/mist/vapors/spray.
inhaled. Use only outdoors or in a well-ventilated area.
May cause cancer if ingested or inhaled. Causes skin irritation, serious eye damage.
Causes damage to central nervous system, blood and Contact with internal components may cause irritation or severe burns. Avoid contact with internal acid.
kidneys through prolonged or repeated exposure. Irritating to eyes, respiratory system, and skin.
May form explosive air/gas mixture during charging.
Extremely flammable gas (hydrogen).
Explosive, fire, blast, or projection hazard.
III. HAZARDOUS INGREDIENTS/IDENTIFY INFORMATION
CAS Number
Approximate % by
Weight
Inorganic Lead Compound:
Lead 7439-92-1 45 - 60
Lead Dioxide 1309-60-0 15 - 25
Tin 7440-31-5 0.1 - 0.2
Sulfuric Acid Electrolyte (Sulfuric Acid/Water) 7664-93-9 15 - 20
Case Material: 5 - 10
Polypropylene 9003-07-0
Polystyrene 9003-53-6
Styrene Acrylonitrile 9003-54-7
Acrylonitrile Butadiene Styrene 9003-56-9
Styrene Butadiene 9003-55-8
Polyvinylchloride 9002-86-2
Polycarbonate, Hard Rubber, Polyethylene 9002-88-4
Polyphenylene Oxide 25134-01-4
Polycarbonate/Polyester Alloy --
Other:
Absorbent Glass Mat -- 1 - 2
Inorganic lead and sulfuric acid electrolyte are the primary components of every battery manufactured by Tesla™ Products.
There are no mercury or cadmium containing products present in batteries manufactured by Tesla™ Products.
Explosive Chemical, Division 1.3
SAFETY DATA SHEET
HEALTH
ENVIRONMENTAL
PHYSICAL
Aquatic Chronic 1
Aquatic Acute 1
HEALTH
ENVIRONMENTAL
PHYSICAL
Components
Page 1

Form #: SDS 853027
Revised: 05/14/15
Supersedes: NEW
ECO #: 1001584
SAFETY DATA SHEET
IV. FIRST AID MEASURES
Inhalation:
Sulfuric Acid: Remove to fresh air immediately. If breathing is difficult, give oxygen. Consult a physician
Lead: Remove from exposure, gargle, wash nose and lips; consult physician.
Ingestion:
Sulfuric Acid: Give large quantities of water; do not induce vomiting or aspiration into the lungs may occur and can cause permanent injury or death;
consult a physician
Lead: Consult physician immediately.
Skin:
Sulfuric Acid: Flush with large amounts of water for at least 15 minutes; remove contaminated clothing completely, including shoes.
If symptoms persist, seek medical attention. Wash contaminated clothing before reuse. Discard contaminated shoes.
Lead: Wash immediately with soap and water.
Eyes:
Sulfuric Acid and Lead: Flush immediately with large amounts of water for at least 15 minutes while lifting lids
Seek immediate medical attention if eyes have been exposed directly to acid.
V. FIRE FIGHTING MEASURES
Flash Point: N/A Flammable Limits: LEL = 4.1% (Hydrogen Gas) UEL = 74.2% (Hydrogen Gas)
Extinguishing Media: Carbon dioxide; foam; dry chemical. Avoid breathing vapors. Use appropriate media for surrounding fire.
Special Fire Fighting Procedures:
If batteries are on charge, shut off power. Use positive pressure, self-contained breathing apparatus. Water applied to electrolyte generates
heat and causes it to spatter. Wear acid-resistant clothing, gloves, face and eye protection.
Note that strings of series connected batteries may still pose risk of electric shock even when charging equipment is shut down.
Unusual Fire and Explosion Hazards:
Highly flammable hydrogen gas is generated during charging and operation of batteries. To avoid risk of fire or explosion, keep sparks or other
sources of ignition away from batteries. Do not allow metallic materials to simultaneously contact negative and positive terminals of cells and
batteries. Follow manufacturer's instructions for installation and service.
VI. PRECAUTIONS FOR SAFE HANDLING AND USE
Spill or Leak Procedures:
Stop flow of material, contain/absorb small spills with dry sand, earth, and vermiculite. Do not use combustible materials. If possible, carefully
neutralize spilled electrolyte with soda ash, sodium bicarbonate, lime, etc. Wear acid-resistant clothing, boots, gloves, and face shield. Do not
allow discharge of unneutralized acid to sewer. Acid must be managed in accordance with local, state, and federal requirements.
Consult state environmental agency and/or federal EPA.
VII. HANDLING AND STORAGE
Handling:
Unless involved in recycling operations, do not breach the casing or empty the contents of the battery.
There may be increasing risk of electric shock from strings of connected batteries.
Keep containers tightly closed when not in use. If battery case is broken, avoid contact with internal components.
Keep vent caps on and cover terminals to prevent short circuits. Place cardboard between layers of stacked automotive batteries to avoid damage and short circuits.
Keep away from combustible materials, organic chemicals, reducing substances, metals, strong oxidizers and water. Use banding or stretch wrap to secure items for
shipping.
Storage:
Store batteries in cool, dry, well-ventilated areas with impervious surfaces and adequate containment in the event of spills. Batteries should
also be stored under roof for protection against adverse weather conditions. Separate from incompatible materials. Store and handle only
in areas with adequate water supply and spill control. Avoid damage to containers. Keep away from fire, sparks and heat. Keep away from metallic objects which
could bridge the terminals on a battery and create a dangerous short-circuit.
Charging:
There is a possible risk of electric shock from charging equipment and from strings of series connected batteries, whether or not being charged. Shut-off power to
chargers whenever not in use and before detachment of any circuit connections. Batteries being charged will generate and release flammable hydrogen gas.
Charging space should be ventilated. Keep battery vent caps in position. Prohibit smoking and avoid creation of flames and sparks nearby.
Wear face and eye protection when near batteries being charged.
Page 2
For expanded detailed info, download the PDF online at...
http://www.teslaind.com/PDF/chart/Tesla-Safety-Data-Sheet.pdf
or go to
http://www.teslaind.com/support-manuals.php
and click on
“Battery Safety Data Sheet” link under “Battery Info” heading.
or use the QR Code to the right.

TI1000 GPU-24 UAV
Table of Contents
Section 1 – Safety Review 1
1.1 – Safety Notices 1
1.2 – Symbols 1
1.3 – Hazards 2
1.4 – Important Safety Precautions 3
1.5 – Extreme Environments 3
Section 2 – Product Overview 4
2.1 – Introduction 4
2.2 – Indication of Terms: Shall, Should and May 4
2.3 – Front Panel Overview 5
2.4 – General Specications 6
2.5 – Physical Dimensions 7
2.6 – Airow Ports 7
2.7 – Operating Positions 8
2.8 – AC Input Circuit Breaker 9
2.9 – 24 VDC Output Connector 9
2.10 – Input Voltage Selector Switch 10
2.11 – “Push to Test” Button and LED Status Indicator 11
Section 3 – Operating Procedures 12
3.1 – Operating Procedures 12
3.2 – General 12
3.3 – Operating Limits and Restrictions 12
3.4 – Performance 12
3.5 – Temperature Specications 13
3.6 – Environmental 14
3.7 – Normal Functional Test Procedures 15-16
3.8 – Pre-Operation 17
3.9 – Transporting Unit 17
3.10 – Regulated AC Power 18
3.11 – Charging Unit 18

TI1000 GPU-24 UAV
Section 4 – Post Operation 19
4.1 – General 19
4.2 – After Use 19
4.3 – Power Cell Recharge 19-20
Section 5 – Unit Care and Maintenance 21
5.1 – Unit Care 21
5.2 – Unit Servicing 22
5.3 – Packaging and Shipping 22
5.4 – Storage 22
Section 6 – Troubleshooting and FAQ 23
6.1 - Frequently Asked Questions 23-24
6.2 - Basic Usage/Operation Questions 24
6.3 - Basic Troubleshooting 25
Section 7 – Performance Data 26
7.1 – Purpose 26
7.2 – General 26
7.3 – Data Basis 26
7.4 – Specic Conditions 26
7.5 – General Conditions 26
7.6 – Temperature Conversion Chart 27
7.7 – Output Voltage 28
7.8 – Maximum Output Current 28
Section 8 – Optional Accessories 29
8.1 – Tesla™ Shipping Case 29
8.2 – GPU Protective Covers 29
8.3 – Tesla™ AC Line Cords 29
8.4 – Transport Dolly 30
Appendix A 31-35
Repair Request Form 37

TI1000 GPU-24 UAV
Abbreviations and Symbols
Abbreviations that may be used within the text, headings and titles of this manual.
LIST OF ABBREVIATIONS
Abbreviation Defi nition
ac Alternating Current
AFT Air ow Technology
AWG American Wire Gauge
amp or A Ampere
cont Continuous
°C Degree Celsius
°F Degree Fahrenheit
dc Direct Current
EFF Ef ciency
ft Feet
FWD Forward
GPU Ground Power Unit
Hr Hour
Hz Hertz
kg Kilograms
kHz Kilohertz
kW Kilowatts
LED Light Emitting Diode
max Maximum
MΩ megaohm
min Minimum
MPU Micro Power Unit
NEMA National Electrical Manufacturers Association
Ω ohm
PF power factor
PFC power factor correction
rms root-mean-square
THD Total Harmonic Distortion
TMDE Test, Measurement, & Diagnostic Equipment
UAV Unmanned aerial vehicle
Vac Volts, Alternating Current
Vdc Volts, Direct Current
W watts

TI1000 GPU-24 UAV 1
Figure 1.2.1 – Different types of hazard and caution symbols
1.1 - Safety Notices
Safety notices appear throughout this manual to alert the user to important information regarding proper
installation, operation, maintenance and storage of the unit. These notices, as illustrated below, contain a
key word that indicates the level of hazard and a triangular icon that indicates the speci c type of hazard.
WARNING Indicates a condition, operating procedure or practice, which if not
adhered to could result in serious injury or death.
CAUTION Indicates a condition or operating procedure, which if not strictly
adhered to could result in damage or destruction of equipment.
NOTE Indicates a condition, operating procedure or practice, which is
essential to highlight.
1.2 - Symbols
The following symbols will appear within the warning triangles to alert the user to the speci c type of danger
or hazard.
General Warning Electrical Hazard Explosion Hazard Fire Hazard
Battery Warning Guard from Moisture
!
Section 1 – Safety Review
!
!
!

TI1000 GPU-24 UAV
2
1Safety Review
1.3 – Hazards
WARNING Shock Hazard Potential
WARNING Shock Hazard Potential
Severe injury or death from electrical shock can occur when damp electrical plugs are connected to the
unit. Before making any connections, turn off unit. Failure to use proper grounding can cause potential
shock hazard! In different countries, the power cord may require the use of a plug adapter to achieve plug
style compatibility for operation. Use only adapters with proper grounding mechanism.
CAUTION Unit Damage Potential
Severe injury or death from electrical shock may occur, if either user
or the unit is wet, while the unit is connected to a power source. If the
unit has come into contact with water, disconnect ac power from the ac
source. If AC Input Circuit Breaker has tripped due to water in ltration,
DO NOT try to reset it with the ac line voltage attached.
Figure 1.3.1 – Proper Ground
Grounded Plug with Grounding Pin
Figure 1.3.2 – Proper Ground
Adapter with Grounding Mechanism
(Secured to Outlet)
Figure 1.3.3 – Improper Ground
Plug with No Grounding Pin
The use of unapproved ac power will damage the unit. Check the
Input Voltage Selector Switch window (outlined in blue) to ensure
the switch setting (115V or 230V) matches the ac power source
(hangar wall,  ight line ac power) prior to connecting the unit for
recharging.
Figure 1.3.4 – TI1000 GPU-24 UAV
Input Voltage Selector Switch

TI1000 GPU-24 UAV 3
1
Safety Review
1.4 – Important Safety Precautions
WARNING Fire/Explosion Hazard Potential
Severe injury or death from  re or explosion can occur if electrical sparks are produced near fuel vapors. DO
NOT CONNECT ac power supply WHILE FUELING. AC power functions of unit shall not be operated during any
fuel handling operation. Power output is restricted to dc power only.
1.5 – Extreme Environments
CAUTION Unit Damage Potential
The unit’s charger temperature switch automatically disables the unit when the internal temperature exceeds
150°F (65°C). This protects the unit from overheating and damage. If the unit shuts down, move the unit
into a cooler environment such as shade or air conditioning when possible. Perform a full function test, after
the unit has been allowed to cool, prior to use.

TI1000 GPU-24 UAV
4
Figure 2.1.1 – TI1000 GPU-24 UAV
2.2 – Indication of Terms: Shall, Should and May
Within this technical manual the word “shall” is used to indicate a mandatory requirement for proper operation
and warranty purposes. The word “should” is used to indicate a non-mandatory but preferred method of
accomplishment. The word “may” is used to indicate an acceptable method of accomplishment.
Section 2 – Product Overview
2.1 – Introduction
Thank you and congratulations on the purchase of your new TI1000 GPU-24 UAV Ground Power Unit.
The TI1000 GPU-24 UAV provides DC electrical ground power for aircraft ight line, maintenance, and
ground support operations. The unit is designed to provide 24 volt DC output for aircraft engine starting
and 24 or 28.5 volts DC output for ground maintenance, avionics/electrical troubleshooting and testing.
The observance of procedures, limitations and performance criteria ensures peak operating efciency and
maximizes operational capabilities and life of the TI1000 GPU-24 UAV.
This manual contains the complete operating instructions and procedures for the TI1000 GPU-24 UAV
needed to safely and efciently operate this GPU.

TI1000 GPU-24 UAV 5
2
Product Overview
2.3 – Front Panel Overview
AC Input Circuit Breaker1. – Trips if over-current
fault condition occurs.
“Push to Test” Button2. – Displays current battery
charge state when pressed.
DC Output Circuit Breaker3. – Trips if over-current
fault condition occurs.
24 VDC Output Connector4. – Provides 24 Vdc to
28.5 Vdc @ 10 A.
AC Input Connector5. – Connects to Single Phase
100-260 Vac line voltage.
24 VDC Capacity Meter6. – Indicates the 24V battery
charge state/power output status.
Input Voltage Selector Switch7. – Allows unit to
operate within voltage range of either 100-130
Vac or 200-260 Vac.
Air Intake Ports8. – Provide airow for cooling
internal electronics.
Carrying Handle9. – Allows for easy transport of unit.
3
4
6
1
2
5
7
8
9

TI1000 GPU-24 UAV
6
2Product Overview
2.4 – General Specications
Electrical
AC Input:
Operates and charges from Single Phase 100-260 Vac, 50/60 Hz•
10 Amps @ 120 Vac 60 Hz - 1200 Watts•
5 Amps @ 240 Vac 60 Hz - 1200 Watts•
Power Cell:
Dry, High Rate Discharge, Rechargeable , Maintenance-free•
DC Output:
10 amps continuous @ 28.5 Vdc (when plugged into ac power)•
Rechargeable Rate:
60 minutes (from full discharge) @ 25°C•
Size:
20.61” long x 5.2” wide x 10.56” high•
523.49mm x 132.08mm x 268.25mm•
Weight
57 lbs (28.85 kg)•
Operating Temperature:
-40°C to +60°C (-40°F to 140°F) without ac power•
-40°C to +55°C (-40°F to 131°F) with ac power•
Storage Temperature:
-65°C to +105°C (-85°F to 221°F)•
Cell Capacity:
+40°C 110% ± 05%•
+25°C 100% ± 05%•
+00°C 80% ± 05%•
-20°C 65% ± 10%•
-40°C 50% ± 10%•

TI1000 GPU-24 UAV 7
2
Product Overview
2.5 – Physical Dimensions
2.6 – Airow Ports
CAUTION Damage may occur if the TI1000 GPU-24 UAV’s air intake or outlet ports
are obstructed. Ensure that ports are clear at all times.
When the TI1000 GPU-24 UAV is plugged into ac power, the internal cooling system will efciently regulate unit
temperature regardless of load. At room temperature (+77°F) the exhaust air will not exceed the ambient
temperature by more than 5°F. In more extreme temperatures (greater than 90°F) the exhaust air will not
exceed the ambient temperature by more than 10°F.
Figure 2.5.1 – TI1000 GPU-24 UAV physical dimensions
Figure 2.6.1 – Air intake, exhaust ports and internal air circulation

TI1000 GPU-24 UAV
8
2Product Overview
2.7 – Operating Positions
The TI1000 GPU-24 UAV can be operated in both the horizontal (Figure 2.7.1) and vertical (Figure 2.7.2)
positions as shown. Make sure that the airow is not obstructed from air intake (Figure 2.7.3) and outlet
(Figure 2.7.4).
Figure 2.7.1 Vertical Position
Figure 2.7.2 Horizontal Position
Figure 2.7.3 Front Inlet Figure 2.7.4 Rear Outlet

TI1000 GPU-24 UAV 9
2
Product Overview
2.8 – AC Input Circuit Breaker
The ac input circuit breaker is located above the ac input connector. When the circuit breaker has been
tripped, the red button will pop out. In the event that the breaker trips:
Disconnect the ac and dc connectors. (Unplug ac line cord on military unit.)1.
Wait for a minimum of 60 seconds.2.
Reset breaker by pressing red button.3.
Reconnect ac and dc connections to the unit. (Plug in ac line cord on military unit.)4.
The unit should power up automatically. If the breaker continues to trip, return the unit to Tesla™ Industries
for repair.
Figure 2.8.1 - AC Input Circuit Breaker
(outlined in blue)
Figure 2.8.2 - Pressing Circuit Breaker
2.9 – 24 VDC Output Connector
The 24 Vdc output connector will provide 10 amps continuous @ 28.5 Vdc (when plugged into ac power).
When the output connector is not in use, cover the receptacle with the protective cover (see Figure 2.9.1).
This will protect the output connector from dust and foreign matter.
Figure 2.9.1 - 24 VDC Output Connector Protective Cover
Closed Open

TI1000 GPU-24 UAV
10
2Product Overview
NOTE
Do not overtighten Selector Shield screws. Be sure star locks are on
screws and snug the screw. Overtightening will damage the Selector
Shield.
Changing Input Voltage Selector Switch
To change the input voltage from 115 Vac to 230 Vac, simply follow these steps:
With cross tip screwdriver, remove one screw and rotate the clear protective cover to one side. (see gure 1.
2.10.2)
Flip the switch to read 230V. (see gure 2.10.3)2.
Rotate cover back into place. Replace and tighten screw.3.
Figure 2.10.2 - Unscrew Protective Cover Figure 2.10.3 - Select Voltage
!
2.10 – Input Voltage Selector Switch
The Input Voltage Selector Switch allows the unit to operate safely within the expected voltage range
of either 100-130 Vac or 200-260 Vac.
Figure 2.10.1 Input Voltage Selector Switch (outlined in blue)
!The 115 Vac setting accommodates the voltage range of 100-130 Vac.
The 230 Vac setting accommodates the voltage range of 200-260 Vac.
NOTE
CAUTION
!Do not plug unit into 230 Vac when Input Voltage Selector Switch is
set on 115 Vac.

TI1000 GPU-24 UAV 11
2
Product Overview
Full Charge Half Charge No Charge
STATUSSTATUS STATUS
R
Y
G
0
1/2
OK
R
Y
G
0
1/2
OK
R
Y
G
0
1/2
OK
2.11 – “Push to Test” Button and LED Status Indicator
The “Push to Test” button indicates the capacity of the power cells without applying ac input power. The status
of the capacity lets the user know if there is enough power to perform another engine start. When the capacity is
low the unit should be connected to ac power to allow it to recharge.
Make sure that you wait at least 2 minutes after ac power is applied, or dc power is extracted from1.
the unit, before you press the “Push to Test” button. This ensures a correct reading.
Without ac power input or dc power output, simply press the “Push to Test” button on the faceplate2.
and hold for approximately 2 to 3 seconds.
The LED bar graph should light up indicating the status of the power cells.3.
In addition, the fan(s) should start operating when the button is pressed. If you do not hear the4.
fan(s) running, stop pressing the button and check for any obstructions.
CAUTION
!Never press the “Push to Test” button while the unit is plugged into
aircraft, vehicle or ac power.
CAUTION
!
Never press the “Push to Test” button for more than 5 seconds. This
may cause a temperature sensor to temporarily disrupt “Push to
Test” function. (If this sensor is tripped, allow ten minutes for unit to
cool before operating “Push to Test” button.)
Figure 2.11.1 - “Push to Test” button location
(outlined in blue)
Figure 2.11.2 - Pushing to Test

TI1000 GPU-24 UAV
12
Section 3 – Operating Procedures
3.1 – Operating Procedures
This section covers normal procedures and steps necessary to ensure safe and ef cient operation of the
unit.
NOTE
!When not in use, the unit should always remain plugged into a suitable ac
power source to ensure operational readiness at all times.
NOTE
!If current demand exceeds 25 amps, converter output voltage will drop below
28.5 Vdc and two or more LED status indicator bars will illuminate. If all
LED status indicator bars illuminate, both the converter and power cells are
supplying 24 Vdc power output.
3.2 – General
The user should be well-versed in both pre-use and functional checks for correct operations of this unit.
Knowledge of the operating limits, restrictions, performance, unit capabilities and functions aids in correct
and safe operations. Compliance with the instructions in this manual affect operational safety as well as the
warranty of the unit.
3.3 – Operating Limits and Restrictions
The minimum, maximum and normal operating ranges result from careful engineering and evaluation of test
data. These limitations must be adhered to during all phases of operation.
3.4 – Performance
Refer to Section 7, PERFORMANCE DATA to determine the capability of the unit. Consideration must be given
to changes in performance resulting from variations in ambient temperature, mode of operation, state of
charge (with or without ac power), and aircraft dc bus system inef ciency (voltage drops).
3.5 – Engine Starting Power
The unit should always be charged above 80% prior to ground support engine starting. However, circumstances
may exist during use where unit recharge is not readily available and immediate external engine starting
power is required. The following provides minimum states of charge necessary to provide ample power for
an ef cient engine start under speci c current load demands.
ENGINE START PEAK CURRENT Requirements MINIMUM CHARGE
Under 650 peak starting amps 0-50% charged
650 - 850 peak starting amps 50-60% charged
850 - 1000 peak starting amps 60-70% charged
1000 - 1200 peak starting amps 70-80% charged
1200 - 1500 peak starting amps 80-100% charged
ENGINE START PEAK CURRENT Requirements MINIMUM CHARGE
Under 1200 peak starting amps 0-40% charged
1200 - 1500 peak starting amps 40-50% charged
1500 - 1800 peak starting amps 50-60% charged
1800 - 2100 peak starting amps 60-70% charged
2100 - 2400 peak starting amps 70-80% charged
2400 - 3000 peak starting amps 80-100% charged
If current demand exceeds 10 amps, converter output voltage will drop below
28.5 Vdc and two or more LED status indicator bars will illuminate. If all
LED status indicator bars illuminate, both the converter and power cells are
supplying 24 Vdc power output.

TI1000 GPU-24 UAV 13
3
Operating Procedures
Hot Soaked or Cold Soaked De nition
Simple terms: When a material is exposed to a change in temperature, its temperature will also change.
Some material changes temperature quickly, others slowly. If the ambient temperature changes and is then
held constant, the materials temperature will also change until its temperature stabilizes. Once the material
temperature has stabilized, it is considered “soaked”.
Example: A unit is moved from the cool shade into the hot sun. That unit’s temperature will increase until it
stabilizes. Once stabilized, the unit would be considered “hot soaked”.
NOTE
!
The unit’s temperature switch automatically disables ac power functions
when the internal temperature is above 150°F (65°C). This protects the unit
from overheating and damage. If the unit shuts down, move the unit into a
cooler climate, such as shade or air conditioning when possible. Perform a
full function test prior to use after the unit has been allowed to cool.
3.6 – Temperature Speci cations
Cold/Hot Soaked Temperature
Exposing the unit for one (1) hour or more to the ambient temperature establishes the unit’s cold/hot
soaked stabilization temperature. If the unit’s cold/hot soaked temperature is outside the normal operating
temperature range, the unit must be stabilized prior to operation. For COLD SOAKED temperature stabilization,
the unit must be placed in an environment with a temperature above +10°C (+41°F) for 3 hours or a
temperature above +20°C (+68°F) for 2 hours. For HOT SOAKED temperature stabilization, the unit must
be placed in an environment with a temperature below +38°C (+100°F) for 1 hour.
120%
100%
80%
60%
40%
+40°C +25°C +0°C -20°C -40°C
Ambient
Temperature
+40°C (+104°F)
+25°C (+77°F)
+0°C (+32°F)
-20°C (-4°F)
-40°C (-40°F)
110% ±5%
100% ±5%
80% ±5%
65% ±10%
50% ±10%
Percentage of
Cell Capacity
Figure 3.6.1 – Output power capability versus ambient temperature
3.5 – Temperature Specications