Growatt ARO 6.6H-C1-US Series User manual

Growatt USA,Inc
9227 Reseda Blvd,#435 Northridge,CA 91324,USA.
T
E
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[email protected]
[phone]
Download
Manual
Growatt New Energy Installation
&
Operation Manual
GR-UM-212-A-00
ARO 6.6H-C1-US
ARO 9.9H-C1-US
ARO 13.2H-C1-US
ARO 16.5H-C1-US
ARO 19.8H-C1-US
www.growatt-america.com

Index
1 Information on this
document
2 Safety
3 Product description 3.1 ARO-US Overview
3.2 Information of Label
3.3 ARO-US Dimension and Weight
3.4 Transportation
1.1 Validity
1.2 Target Group
1.3 Storage of the manuals
1.4 Symbols in this document
2.1 Intended Use
2.2 Qualification of skilled person
2.3 Safety instruction
2.4 Certified countries
2.5 DC and AC disconnect
2.6 Operation Warnings
4 Inspection of delivery
5 Instruction
6.1 Safety
6.2 Intended use
6.3 Overview of the connection area
6.4 Grounding
6.5 connection
6 Electrical connection
4.1 Unpacking and inspection
5.1 Safety instruction
5.2 Selecting the installation location
5.3 Mounting the ARO-US
5.4 Opening the wiring compartment

8.1 Storing the ARO-US
8.2 Disposing of the ARO-US
8 Decommissioning
9 Growatt Warranty
10 Technical Data
11 Contact
10.1 Specification
10.2 Ambient temperature
7 Commissioning 7.1 Checking Before Power-On
7.2 Powering on the system
7.3 LED description
7.4 Powering off the system
7.5 Button

This manual describes the assembly, installation, commissioning and maintenance of the
following Growatt ARO-US model:
ARO 6.6H-C1-US
ARO 9.9H-C1-US
ARO 13.2H-C1-US
ARO 16.5H-C1-US
ARO 19.8H-C1-US
1.3 Storage of the manuals
Find further information on special topics in the download area at http://www.growatt-
america.com.The manual and other documents must be stored in a convenient place and
be available at all times. We assume no liability for any damage caused by failure to
observe these instructions. For possible changes in this manual, GROWATT NEW ENERGY
TECHNOLOGY CO.,LTD accepts no responsibilities to inform the users.
This manual is for qualified personnel. Qualified personnel have received training and
have demonstrated skills and knowledge in the construction and operation of this
device. Qualified Personnel are trained to deal with the dangers and hazards involved in
installing electric devices.
1.2 Target Group
1.1 Validity
This manual does not cover any details concerning equipment connected to the ARO 6.6-
19.8H-C1-US ( e.g. TL-XH US ). Information concerning the connected equipment is
available from the manufacturer of the equipment.
1.4 Symbols in this document
A warning describes a hazard to equipment or personnel. It calls attention to a procedure
or practice, which, if not correctly performed or adhered to, could result in damage to or
destruction of part or all of the Growatt equipment and/or other equipment connected
to the Growatt equipment or personal injury.
1.4.1 Warnings in this document
Symbol
description
DANGER indicates a hazardous situation which, if not avoided, will
result in death or serious injury.
DANGER indique une situation dangereuse qui, si elle n'est pas évitée,
est susceptible de provoquer un décès ou des blessures graves.
WARNING indicates a hazardous situation which, if not avoided, could
result in death or serious injury.
AVERTISSEMENT indique une situation dangereuse qui, si elle n'est
pas évitée, pourrait entraîner la mort ou des blessures graves.
DANGER
WARNING
1 Information on this document
1
CAUTION indicates a hazardous situation which, if not avoided, could
result in minor or moderate injury.
ATTENTION indique une situation dangereuse qui, si elle n'est pas é
vitée, pourrait entraîner des blessures mineures ou modérées.
NOTICE is used to address practices not related to personal injury.
AVIS est utilisé pour traiter des pratiques non liées aux blessures
corporelles.
Information that you must read and know to ensure optimal operation
of the system.
Informations que vous devez lire et connaître pour assurer un
fonctionnement optimal du système.
CAUTION
NOTICE
Information
1.4.2 Markings on this product
Symbol
Explanation
Risk of electrical shock
Risque electrocution
Risk of fire or explosion
Risk of burns injuries
Risque de brûlures
Wait for 5minutes before engaging in the indicated action
Attendez 5 minutes avant de vous engager dans l'action indiquée
Earth Ground
Terre au sol
Observe the operating instructions
Respectez les instructions de service
Direct Current (DC)
Alternating Current (AC)
The ARO-US must not be disposed of with the household waste.

DC switch
OFF
ON
PV ANTENNA1
BAT ANTENNA2
AC Grid Backup
1.5 Glossary
3
AC
Abbreviation for "Alternating Current”
DC
Abbreviation for "Direct Current”
Energy
Energy is measured in Wh (watt hours), kWh (kilowatt hours) or MWh (megawatt hours).
The energy is the power calculated over time. For example, your inverter operates at a
constant power of 4600 W for half an hour and then at a constant power of 2300 W for
another half an hour, it has fed 3450Wh of energy into the power distribution grid within
that hour.
Power
Power is measured in W (watts), kW (kilowatts) or MW (megawatts). Power is an
instantaneous value. It displays the power your ARO-US is currently feeding into the
power distribution grid.
Power rate
Power rate is the radio of current power feeding into the power distribution grid and the
maximum power of the ARO-US that can feed into the power distribution grid.
Power Factor
Power factor is the ratio of true power or watts to apparent power or volt amps. They are
identical only when current and voltage are in phase then the power factor is 1.0. The
power in an ac circuit is very seldom equal to the direct product of the volts and amperes.
In order to find the power of a single phase ac circuit the product of volts and amperes
must be multiplied by the power factor.
PV
Abbreviation for photovoltaic.
Wireless communication
The external wireless communication technology is a radio technology that allows the
ARO-US and other communication products to communicate with each other. The
external wireless communication does not require line of sight between the devices and
it is selective purchasing.
2.1 Intended Use Safety 2
Fig 2.1 ARO 6.6-19.8H-C1-US
NOTE：When connect the ATL battery module to the ARO-US, please make sure that
the ATL battery module is turned off,and there is no PV and mains,otherwise there is a
risk of electric shock.
2.2 Qualification of skilled person
This grid-connected energy storage system can only operate when it is correctly
connected to MIN TL-XH US. This connection must be made only by qualified technical
personnel, and it must be carried out after obtaining the appropriate approval under the
premise that the local authority having jurisdiction requires it.
2.3 Safety instruction
The ARO-US is designed and tested according to international safety requirements;
however, certain safety precautions must be observed when installing and operating this
ARO-US. Read and follow all instructions, cautions and warnings in this installation
manual. If questions arise, please contact Growatt's technical services at +1 (818)800-
9455.
4
OFF
ON
BAT switch
Forced start
button
777.0497801
+_
BAT
INV Link in Link out
COM COM
CAN +_
BAT Expansion
The Growatt ARO6.6-19.8H-C1-US(Hereinafter referred to as ARO-US) series battery converts
the DC current generated by the low-voltage lithium battery module into a high-voltage DC
current that meets the requirements of the MIN TL-XH US and performs the work of
bidirectional power flow. This series of batteries are manufactured according to all required
safety regulations. However, incorrect use may cause fatal hazards to operators or third
parties, or may damage equipment and other properties.
COM
CAN +_
BAT Expansion
Growatt Growatt

5
Danger to life due to lethal voltages!
Lethal voltages are present within the unit and on the power supply lines.
Therefore, only authorized electricians may install and open the unit. Even
when the unit is disconnected, high contact voltages may still be present
within the unit.
Danger of burn injuries due to hot enclosure parts!
During operation, the four sides of the enclosure lid and the heat sink may
become hot. Only touch the front enclosure lid during operation.
Electric arc hazards!
he product has large electrical potential differences between Its conductors.
Arc flashes can occur through air when high-voltage current flows. Do not
work on the product during operation.
Risk of fire!
Improper installation of the product may cause a fire.
Possible damage to health as a result of the effects of radiation!
In special cases, there may still be interference for the specified application
area despite maintaining standardized emission limit values (e.g. when
sensitive equipment is located at the setup locationor when the setup
location is near radio or television receivers).In this case, the operator is
obliged to take proper action to rectify the Situation. Do not stay closer than
8inch to the ARO-US for any length of time.
Grounding the PV generator!
Comply with the local requirements for grounding the PV modules and the
PV generator. Growatt recommends connecting the generator frame and
other electrically conductive surfaces in a manner which ensures continuous
conduction with ground these in order to have optimal protection of the
system and personnel.
Permanent connection!
The ARO-US may only be operated with a permanent connection to the
public power grid. The ARO-US is not intended for mobile use. Any other or
additional use is not considered the intended use.
The manufacturer/supplier is not liable for damage caused by such
unintended use. Damage caused by suchunintended use is at the sole risk of
the operator.
PV modules Capacitive Discharge Currents!
PV modules with large capacities relative to earth, such as thin-film PV
modules with cells on a metallic substrate, may only be used if their coupling
capacity does not exceed 1uF. During feed-in operation, a leakage current
flows from the cells to earth, the size of which depends on the manner in
which the PV modules are installed (e.g. foil on metal roof) and on the
weather (rain, snow). This "normal" leakage current may not exceed 50mA
due to the fact that the ARO-US would otherwise automatically disconnect
from the electricity grid as a protective measure.
NOTE
NOTE
ARO-US
NOTE
ARO-US
2.4 Certified countries
With the appropriate settings, the unit will comply with the requirements specified in
the following standards and directives.
ØUl1973
Growatt can preset special grid parameters for other countries installation locations
according to customer requests after evaluation by Growatt. You can make later
modifications yourself by changing software parameters with respective
communication products. To change the grid-relevant parameters, an access code is
required; please contact Growatt support if needed.
2.5 DC and AC disconnect
Isolate the ARO-US securely from the MIN TL XH-USusing DC Switch. DC and AC Switch shall
be able to disconnect all ungrounded conductors after installation.
2.5.1 Assembly Warnings
ØPrior to installation, inspect the unit to ensure absence of any
transport or handling damage, which could affect insulation
integrity or safety clearances; failure to do so could result in safety
hazards.
ØAssemble the ARO-US per the instructions in this manual. Use care
when choosing installation location and adhere to specified
cooling requirements.
ØUnauthorized removal of necessary protections, improper use,
incorrect installation and operation may lead to serious safety and
shock hazards and/or equipment damage.
ØIn order to minimize the potential of a shock hazard due to
hazardous voltages, cover the entire solar array with dark material
prior to connecting the array to any equipment.
WARNING
2.5.2 Electrical Connection Warnings
DANGER
ØThe components in the ARO-US are live. Touching live components
can result in serious injury or death.
lDo not open the ARO-US except the wire box by qualified persons.
lElectrical installation, repairs and conversions may only be carried
out by electrically qualified persons.
lDo not touch damaged ARO-US.
ØDanger to life due to high voltages in the ARO-US
lThere is residual voltage in the ARO-US. The ARO-US takes 20
minutes to discharge
lWait 20 minutes before you open the wire box.
ØPersons with limited physical or mental abilities may only work
with the Growatt ARO-US following proper instruction and under
constant supervision. Children are forbidden to play with the
Growatt ARO-US. Must keep the Growatt ARO-US away from
children.
6

ØMake all electrical connections (e.g. conductor termination,
fuses, PE connection, etc.) in accordance with prevailing
regulations. When working with the ARO-US powered on,
adhere to all prevailing safety regulations to minimize risk of
accidents.
ØSystems with ARO-US typically require additional control (e.g.,
switches, disconnects) or protective devices (e.g., fusing circuit
breakers) depending upon the prevailing safety rules.
WARNING
7
2.6 Operation Warnings
ØAnytime the ARO-US has been disconnected from the power
network, use extreme caution as some components can retain
charge sufficient to create a shock hazard; to minimize
occurrence of such conditions, comply with all corresponding
safety symbols and markings present on the unit and in this
manual.
ØEnsure all covers and doors are closed and secure during
operation.
ØAll operations regarding transport, installation and start-up,
including maintenance must be operated by qualified, trained
personnel and in compliance with all prevailing codes and
regulations.
ØAlthough designed to meet all safety requirements, some parts
and surfaces of ARO-US are still hot during operation. To reduce
the risk of injury, do not touch the heat sink at the back of the
PV-ARO-US or nearby surfaces while ARO-US is operating.
ØIncorrect sizing of the PV plant may result in voltages being
present which could destroy the ARO-US. The Shinephone will
read the error message 'PV-Over voltage'. Turn the rotary switch
of the DC Disconnect to the Off position immediately. Contact
installer.
WARNING
Fig 3.1
3.1 ARO-US Overview
1
2
4
5
6
8
7
3
9
10
11
7
12
13
6
14
15
(1)Handle (2)BAT-switch (3)Power button
(4) Box (5)Left-side wiring box (6)Power wire outlet hole
(7)Signal wire outlet hole (8) Base (9)LED indicator
(10) Front cover (11)Base front cover (12)Right-side wiring box
(13)Ground port (14)Install ears (15)Heat sink
3.2 Information of Label
The labels provide technical information of the ARO-US. You can identify the ARO-US by
the label; it is located on the enclosure of the ARO-US. Different type labels can be found
on the ARO 6.6-19.8H-C1-US models.
ØThe type of product (Type/Model).
ØDevice-specific characteristics.
ØSpecifications of the ARO-US.
ØRequirements of cable & torque.
ØSerial number.
ØWarning.
Product description 3
8
ON
OFF
BAT sw itch
Forc ed star t
butt on

9
3.2.1 Product`s label
Fig 3.2
Total Capacity/
Model/
Nominal Power/
Lithium Ion Battery
ARO 6.6H-C1-US/
Enclosure
Total Energy/
FOR HOME AND OFFICE USE
Tested To Comply
With FCC Standards
Tested To Comply
With FCC Standards
Tested To Comply
With FCC Standards
x
Nominal Voltage/
Operation Ambient
Temperature
-10°C- +45°C
14°F- +113°F
4003184
IP56
Max. short Current
and Duration 3670A,500μs
Made in China
Certified to ANSI/CAN/UL STD 1973
400 d.c.V/3.5KW/
6.6kWh/6kWh
ARO 9.9H-C1-US/
400 d.c.V/5.2KW/
9.9kWh/9kWh
ARO 13.2H-C1-US/
400 d.c.V/5.2KW/
13.2kWh/12kWh
ARO 16.5H-C1-US/
400 d.c.V/5.2KW/
16.5kWh/15kWh
ARO 19.8H-C1-US/
400 d.c.V/5.2KW/
19.8kWh/18kWh
Total Capacity/
Model/
Nominal Power/
Lithium Ion Battery
ARO 6.6H-C1-US/
Enclosure
Total Energy/
FOR HOME AND OFFICE USE
Tested To Comply
With FCC Standards
Tested To Comply
With FCC Standards
Tested To Comply
With FCC Standards
x
Nominal Voltage/
Operation Ambient
Temperature
-10°C- +45°C
14°F- +113°F
4003184
IP56
Max. short Current
and Duration 3670A,500μs
Made in China
Certified to ANSI/CAN/UL STD 1973
400 d.c.V/3.5KW/
6.6kWh/6kWh
ARO 9.9H-C1-US/
400 d.c.V/5.2KW/
9.9kWh/9kWh
ARO 13.2H-C1-US/
400 d.c.V/5.2KW/
13.2kWh/12kWh
ARO 16.5H-C1-US/
400 d.c.V/5.2KW/
16.5kWh/15kWh
ARO 19.8H-C1-US/
400 d.c.V/5.2KW/
19.8kWh/18kWh
Total Capacity/
Model/
Nominal Power/
ARO HV Battery
ARO 6.6H-C1-US/
Enclosure
Total Energy/
FOR HOME AND OFFICE USE
Tested To Comply
With FCC Standards
Tested To Comply
With FCC Standards
Tested To Comply
With FCC Standards
x
Nominal Voltage/
Operation Ambient
Temperature
-10°C- +45°C
14°F- +113°F
4003184
IP56
Max. short Current
and Duration 3670A,500μs
Made in China
Certified to ANSI/CAN/UL STD 1973
400 d.c.V/3.5KW/
6.6kWh/6kWh
ARO 9.9H-C1-US/
400 d.c.V/5.2KW/
9.9kWh/9kWh
ARO 13.2H-C1-US/
400 d.c.V/5.2KW/
13.2kWh/12kWh
ARO 16.5H-C1-US/
400 d.c.V/5.2KW/
16.5kWh/15kWh
ARO 19.8H-C1-US/
400 d.c.V/5.2KW/
19.8kWh/18kWh
Total Capacity/
Model/
Nominal Power/
Lithium Ion Battery
ARO 6.6H-C1-US/
Enclosure
Total Energy/
FOR HOME AND OFFICE USE
Tested To Comply
With FCC Standards
Tested To Comply
With FCC Standards
Tested To Comply
With FCC Standards
x
Nominal Voltage/
Operation Ambient
Temperature
-10°C- +45°C
14°F- +113°F
4003184
IP56
Max. short Current
and Duration 3670A,500μs
Made in China
Certified to ANSI/CAN/UL STD 1973
400 d.c.V/3.5KW/
6.6kWh/6kWh
ARO 9.9H-C1-US/
400 d.c.V/5.2KW/
9.9kWh/9kWh
ARO 13.2H-C1-US/
400 d.c.V/5.2KW/
13.2kWh/12kWh
ARO 16.5H-C1-US/
400 d.c.V/5.2KW/
16.5kWh/15kWh
ARO 19.8H-C1-US/
400 d.c.V/5.2KW/
19.8kWh/18kWh
Total Capacity/
Model/
Nominal Power/
Lithium Ion Battery
ARO 6.6H-C1-US/
Enclosure
Total Energy/
FOR HOME AND OFFICE USE
Tested To Comply
With FCC Standards
Tested To Comply
With FCC Standards
Tested To Comply
With FCC Standards
x
Nominal Voltage/
Operation Ambient
Temperature
-10°C- +45°C
14°F- +113°F
4003184
IP56
Max. short Current
and Duration 3670A,500μs
Made in China
Certified to ANSI/CAN/UL STD 1973
400 d.c.V/3.5KW/
6.6kWh/6kWh
ARO 9.9H-C1-US/
400 d.c.V/5.2KW/
9.9kWh/9kWh
ARO 13.2H-C1-US/
400 d.c.V/5.2KW/
13.2kWh/12kWh
ARO 16.5H-C1-US/
400 d.c.V/5.2KW/
16.5kWh/15kWh
ARO 19.8H-C1-US/
400 d.c.V/5.2KW/
19.8kWh/18kWh
Total Capacity/
Model/
Nominal Power/
ARO HV Battery
ARO 6.6H-C1-US/
Enclosure
Total Energy/
FOR HOME AND OFFICE USE
Tested To Comply
With FCC Standards
Tested To Comply
With FCC Standards
Tested To Comply
With FCC Standards
x
Nominal Voltage/
Operation Ambient
Temperature
-10°C- +45°C
14°F- +113°F
4003184
IP56
Max. short Current
and Duration 3670A,500μs
Made in China
Certified to ANSI/CAN/UL STD 1973
400 d.c.V/3.5KW/
6.6kWh/6kWh
ARO 9.9H-C1-US/
400 d.c.V/5.2KW/
9.9kWh/9kWh
ARO 13.2H-C1-US/
400 d.c.V/5.2KW/
13.2kWh/12kWh
ARO 16.5H-C1-US/
400 d.c.V/5.2KW/
16.5kWh/15kWh
ARO 19.8H-C1-US/
400 d.c.V/5.2KW/
19.8kWh/18kWh
Total Capacity/
Model/
Nominal Power/
Lithium Ion Battery
ARO 6.6H-C1-US/
Enclosure
Total Energy/
FOR HOME AND OFFICE USE
Tested To Comply
With FCC Standards
Tested To Comply
With FCC Standards
Tested To Comply
With FCC Standards
x
Nominal Voltage/
Operation Ambient
Temperature
-10°C- +45°C
14°F- +113°F
4003184
IP56
Max. short Current
and Duration 3670A,500μs
Made in China
Certified to ANSI/CAN/UL STD 1973
400 d.c.V/3.5KW/
6.6kWh/6kWh
ARO 9.9H-C1-US/
400 d.c.V/5.2KW/
9.9kWh/9kWh
ARO 13.2H-C1-US/
400 d.c.V/5.2KW/
13.2kWh/12kWh
ARO 16.5H-C1-US/
400 d.c.V/5.2KW/
16.5kWh/15kWh
ARO 19.8H-C1-US/
400 d.c.V/5.2KW/
19.8kWh/18kWh
Total Capacity/
Model/
Nominal Power/
Lithium Ion Battery
ARO 6.6H-C1-US/
Enclosure
Total Energy/
FOR HOME AND OFFICE USE
Tested To Comply
With FCC Standards
Tested To Comply
With FCC Standards
Tested To Comply
With FCC Standards
x
Nominal Voltage/
Operation Ambient
Temperature
-10°C- +45°C
14°F- +113°F
4003184
IP56
Max. short Current
and Duration 3670A,500μs
Made in China
Certified to ANSI/CAN/UL STD 1973
400 d.c.V/3.5KW/
6.6kWh/6kWh
ARO 9.9H-C1-US/
400 d.c.V/5.2KW/
9.9kWh/9kWh
ARO 13.2H-C1-US/
400 d.c.V/5.2KW/
13.2kWh/12kWh
ARO 16.5H-C1-US/
400 d.c.V/5.2KW/
16.5kWh/15kWh
ARO 19.8H-C1-US/
400 d.c.V/5.2KW/
19.8kWh/18kWh
Total Capacity/
Model/
Nominal Power/
Lithium Ion Battery
ARO 6.6H-C1-US/
Enclosure
Total Energy/
FOR HOME AND OFFICE USE
Tested To Comply
With FCC Standards
Tested To Comply
With FCC Standards
Tested To Comply
With FCC Standards
x
Nominal Voltage/
Operation Ambient
Temperature
-10°C- +45°C
14°F- +113°F
4003184
IP56
Max. short Current
and Duration 3670A,500μs
Made in China
Certified to ANSI/CAN/UL STD 1973
400 d.c.V/3.5KW/
6.6kWh/6kWh
ARO 9.9H-C1-US/
400 d.c.V/5.2KW/
9.9kWh/9kWh
ARO 13.2H-C1-US/
400 d.c.V/5.2KW/
13.2kWh/12kWh
ARO 16.5H-C1-US/
400 d.c.V/5.2KW/
16.5kWh/15kWh
ARO 19.8H-C1-US/
400 d.c.V/5.2KW/
19.8kWh/18kWh
3.2.2 Product`s label
Fig 3.3
xMade in China
Risk of Electric Shock, Do Not Remove Cover.
No User Serviceable Parts Inside ,Refer
Servicing To Qualified Service Personnel.
Risk of Electric Shock from energy stored in
capacitor.
Do not remove cover until 5 minutes after
disconnecting all sources of supply.
Do not use the equipment for purposes not
described in its documentation.
Do not drop,strike,puncture,or step on the
equipment.
The equipment is heavy and cause injury if
not handled safely.
CAUTION!
CAUTION!
Hot surfaces – To reduce the risk of burns –
Do not touch.
CAUTION!
To reduce the risk electric shock and fire –
Do not connect to a circuit at more than 150
volts to ground.
Risque de choc électrique, ne retirez pas le
couvercle.
Aucune pièce réparable par l'utilisateur à
l'intérieur, confiez l'entretien à un personnel
de service qualifié.
Risque de choc électrique dû à l'énergie
stockée dans le condensateur.
Ne retirez que le couvercle 5 minutes après
avoir déconnecté toutes les sources
d'alimentation.
N'utilisez pas l'équipement à des fins non
décrites dans la documentation.
Ne laissez pas tomber, ne heurtez pas, ne
perforez pas et ne marchez pas sur
l'équipement.
L'équipement est lourd et peut causer des
blessures s'il n'est pas manipulé en toute
sécurité.
MISE EN GARDE!
MISE EN GARDE!
Surfaces chaudes - Pour réduire le risque de
brûlures - Ne pas toucher.
MISE EN GARDE!
Pour réduire les risques d'électrocution et
d'incendie - Ne connectez pas à un circuit à
plus de 150 volts par rapport à la terre.
10

11
3.3 ARO-US Dimension and Weight
3.4 Transportation
The ARO-US has been fully tested and strictly inspected before delivery. Our equipment
leave the factory under appropriate electrical and mechanical conditions. Special
packaging ensures safe and careful transportation. However, shipping damage may still
occur. In this case, the transportation company is responsible. Please thoroughly inspect
the ARO-US before leaving the factory. If you find any damage on the package that the
ARO-US may be damaged, or if you find any obvious damage to the ARO-US, please
notify the responsible transportation company immediately. If needed, we will be happy
to help you. When transporting the ARO-US, the original packaging or equivalent
packaging should be used. The maximum number of layers of the original carton is four
to ensure safe transportation.
12
4.1 Unpacking and inspection
The ARO-US is thoroughly tested and inspected strictly before delivery. Our ARO-US leave
our factory in proper electrical and mechanical condition. Special packaging ensures
safety and careful transportation. However, transportation damage may still occur. The
shipping company is responsible in such cases. Thoroughly inspect the ARO-US upon
delivery. Immediately notify the responsible shipping company if you discover any
damage to the packaging which indicates that the ARO-US may have been damaged or if
you discover any visible damage to the ARO-US. We will be glad to assist you, if required.
When transporting the ARO-US, the original or equivalent packaging should be used,
and the maximum layers for original carton is four, as this ensures safe transport.
After opening the package, please check the contents of the box. It should contain the
following, Please check all of the accessories carefully in the carton. If anything missing,
contact your dealer at once.
ABC
DE
Fig 4.1
Object Description Quantity
A ARO 6.6-19.8H-C1-US 1
B Installation/ Quick Guide 1
C M6 Setscrew 2
D M5 Screw 6
E BAT+/BAT- terminal 2
Inspection of delivery 4
3.3 ARO-US Dimension and Weight
3.2.3 Labels in the wire box
INVERTER Port Only：
+-
BAT
INV Link in Link out
COM
BATTERY Expansion Box Only:
COM
CAN
BAT- Expansion
+-
Datasheet ARO
6.6H-C1-US
ARO
9.9H-C1-US
ARO
13.2H-C1-US
ARO
16.5H-C1-US
ARO
19.8H-C1-US
Dimension
(W/D/H)
650*320*1160mm
(25.6*12.6*45.7in)
1300*320*1160mm
(51.2*12.6*45.7in)
Weight 105kg/232Ib 140kg/309Ib 210kg/462Ib 240kg/529lb 270kg/596Ib

13
5.1 Safety instruction
DANGER
Danger to life from electric shock due to high voltages.
High voltages are present in the DC cables and later during
operation in the conductive components of the ARO-US. These
can cause fatal electric shocks.
Danger to life due to fire or explosion .
Despite careful construction, electrical devices can cause fires.
Do not install the ARO-US on easily flammable materials and
where flammable materials are stored.
Risk of burns due to hot enclosure parts.
The surface of the ARO-US can become very hot. Touching the
surface can result in burns.
Do not touch hot surfaces.
During operation, do not touch any parts other than the lower
enclosure lid of the ARO-US.
Mount the ARO-US in such a way that it cannot be touched
inadvertently.
DANGER
WARNING
5.2 Selecting the installation location
This is the guidance for installer to choose a suitable installation location, and avoid
potential damages to device and operators. Rain-tight or wet location hubs that comply
with the requirements in the Standard for Conduit, Tubing, and Cable Fittings, UL 514B,
are to be used.
The equipment should stand vertically beside the wall. The installation location must be
suitable for the weight and size of ARO-US for a long time.
Ø Select a wall or solid vertical surface that can support the ARO-US.
Ø Select the installation location so that the status display can be easily viewed.
Ø Select a well-ventilated location sheltered from direct sunlight and rain.
Ø Do not install the ARO-US on structures constructed of flammable or thermo labile
materials.
Ø The humidity of the installation location should be 0~100% without condensation.
Ø The installation location must be freely and safely to access at all times.
Ø The ARO-US must be installed vertically. Do not install horizontally and avoid tilting.
Ø Make sure there is a distance of more than 300mm from ARO 6.6-19.8H-C1-US's
front, top, left and right in order to have better heat dissipation when the machine
is running.
Instruction 5

15
14
Fig 5.1
ØEnsure that the ARO-US is out of the children's reach.
ØDon't put any physical item on the ARO-US. Do not cover the ARO-US.
ØThe location shall be away from strong electromagnetic interference.
ØDo not install the ARO-US near television antenna or any other antennas and
antenna cables.
ØProviding better ventilation for the ARO-US to ensure the heat escape adequately.
The ambient temperature should be below 30°C to ensure optimum operation.
ØDo not expose the ARO-US to direct sunlight, as this can cause excessive heating
and thus power reduction.
ØObserve the Min. clearances to walls, other ARO-US, or objects as shown below:
≥300MM
≥300MM
≥300MM
≥300MM
Fig 5.2 Ambient dimensions of one ARO-US
ØThere must be sufficient clearance between the individual ARO-US to ensure that
the cooling air of the adjacent ARO-US is not taken in.
ØIf necessary, increase the clearance spaces and make sure there is enough fresh air
supply to ensure sufficient cooling of the ARO-US.
ØThe ARO-US can't install to solarization，drench，firn location. We suggest that
the ARO-US should be installed at the location with some cover or protection.
Fig 5.3
ØPlease make sure the ARO-US is installed at the Proper location. The ARO-US can't
install close to trunk.
Fig 5.4
5.3 Mounting the ARO-US
5.3.1 Preparatory work
ØGeneral tools
Personal safety equipment such as gloves, helmet, goggles, ear
plugs, safety harness etc.
Step ladders.
Knife.
ØTools for mechanical installation.
Equipment for transporting and lifting the ARO-US
Electric(hammer) drill
Hammer
wrenches, sockets and screw bits
Socket driver, screw driver
Tape measure.
Level.
Pencil or other marker.
Fastening screws, plugs, etc.
Information

17
16
5.3.2 Fixed the ARO-US on wall
In order to avoid electrical shock or other injury, inspect existing
electronic or plumbing installations before drilling holes.
DANGER
1.Remove the ARO 6.6-19.8H-C1-US from the box，rotate the two mounting ears which
on ARO 6.6-19.8H-C1-US's back 90 degrees outward.
2.Move the ARO 6.6-19.8H-C1-US to the installation position against the wall.
3.Draw the expansion bolt's installation position on the wall with the pen.
4.Move the ARO 6.6-19.8H-C1-US，and punch the marked location with ø8 drill,and the
depth is 50mm,fixed the expansion bolt in the corresponding hole
5.Fixed the ARO 6.6-19.8H-C1-US in the expansion bolt's installation position,and
tighten the nut.
Fig 5.5
5.3.3 Remove ARO' front cover
1.Pull out the ARO 6.6-19.8H-C1-US' front cover of the base
2.Remove screws on both sides of the door.
3.Open the buckle under the door.
4.Flip the bottom of the door up, open the door upward.
5.Flip the bottom of the door left slowly(attention:Do not pull the cable connected to the
door),remove the ground wire screw front door and LED board cable.
Fig 5.6
5.4 Opening the wiring compartment
ØThis step may be performed before or after mounting
the ARO-US.
ØGeneral tools.
Ensure no live voltages are present on PV input and AC
output circuits, and verify that the DC disconnect, AC
disconnect, and de¬dicated AC branch circuit breaker are in
the “OFF” position, before ARO-US installation.Please make
sure the internal battery module is in sleep state.
Information
Warning
1.Ensure the ARO-US ON/OFF switch is OFF.
2.Loosen the screws of the left junction box cover as shown below.
3.Remove the cover.
4.Open the required BAT and COM Waterproof cover according to the conduits used in
the installation.
ab
Fig 5.7

19
18
6 Electrical connection
6.1 Safety
DANGER
Do not disconnect the DC connectors under load!
Risk of burns due to hot surfaces
The surface of the ARO-US can become very hot. Touching the
surface can result in burns.
Do not touch hot surfaces. During operation, do not touch any
parts other than the lower enclosure lid of the ARO-US. Mount
the ARO-US in such a way that it cannot be touched
inadvertently.
1. All electrical installations shall be done in accordance with
the local and national electrical codes. Do not remove the
casing. ARO-US contains no user serviceable parts. Refer
servicing to qualified service personnel. All wiring and
electrical installation should be conducted by a qualified
service personnel.
2. Carefully remove the unit from its packaging and inspect for
external damage. If you find any imperfections, please contact
your local dealer.
3. Be sure that the ARO-US connect to the ground in order to
protect property and personal safety.
4. The ARO-US must only be operated with MIN TL-XH US. Do
not connect any other source of energy to it.
5. Energy stored in this equipment's DC link capacitors
presents a risk of electric shock. Even after the unit is
disconnected from the grid and Battery pack, high voltages
may still exist inside the ARO-US. Do not remove the casing
until at least 5 minutes after disconnecting all power sources.
6. Although designed to meet all safety requirements, some
parts and surfaces of ARO-US are still hot during operation. To
reduce the risk of injury, do not touch the heat sink at the back
of the PV-ARO-US or nearby surfaces while ARO-US is
operating.
7. Before any electrical wiring can be connected to the ARO-
US, the ARO-US must be permanently mounted.
Danger of damage to electronic components due to
electrostatic discharge.
Take appropriate ESD precautions when replacing and
installing the ARO-US.
DANGER
WARNING
WARNING
ØConnecting the second protective conductor.
ØIf the installation requires, the earth terminal can be used to connect a second
protective conductor or as equipment bonding. This prevents touch current if the
original protective conductor fails.
ØThe battery pack power terminal faces the right side of the cabinet.
Electrical installations
Fig 6.1
All electrical installations must be done in accordance with all local
electrical codes and the NATIOAL Electrical Code®, ANSI/NFPA 70. For
installation in Canada the installations must be done in accordance with
applicable Canadian standards. Before connecting the ARO-US to the
power distribution grid, contact your local electric utility company. This
connection may be made only by electrically qualified persons.
Tools for electrical installation
Ÿ Hexagonal driver 3mm for securing the front cover and AC connector.
Ÿ Flat screwdriver 3mm for releasing spring terminals.
Ÿ Cable and wire strippers.
Ÿ Side cutters.
Ÿ Crimping tool and cable lugs.
Ÿ Cable marking equipment.
Ÿ Digital multi-meter (insulation tester) with DC and AC sensitive
current clamp, voltage measurement (max. 1000 VDC) and
continuitytesting functions.
6.2 Intended use
Growatt ARO-US are built according to all required safety rules. Nevertheless, improper
use may cause lethal hazards for the operator or third parties, or may result in damage to
the units and other property.
This unit or system is provided with fixed trip limits and shall not be aggregated above 30
kW on a single Point of Common Connection.

20 21
ØConvert the low-voltage direct current output from the battery pack into high-
voltage direct current. ARO-US can not only release the power of the battery pack
but also charge the battery pack.
ØConnection system: This ‘interface’ between ARO-US and inverter may consist of
electrical breaker, fuse and connecting terminals. To comply with local safety
standards and codes, the connection system should be designed and implemented
by a qualified technician.
ØUtility: Referred to as ‘grid’ in this manual, is the way your electric power company
provides power to your place.
6.2.1 Cable requirements
NOTE
Use only solid or stranded wire but not fine stranded wire.
Use cables with high ambient temperatures.
Use cables with a large cross-section.
The maximum allowed wire size for battery cable is 12-8AWG..
The maximum allowed wire size for battery exspansion cable is 5AWG.
6.3 Overview of the connection area
6.3.1 DC HV connection area
Fig 6.2
Fig 6.3
ØCOM-INV terminal is standard RJ 45, and the signal cable is
the CAT5/6 cable.
ATL battery module accessories
Fig 6.4 Standard cable wiring
CAT5/6 standard cables have eight wires (four twisted pairs), as shown in the diagram
below. Wire colors may differ from one cable to another. You can use either wiring
standard, as long as both sides of the cable have the same pin-out and color-coding.
ØInsert the conduit into the right side COM drill guide that was opened
ØInsert the CAT 5/6cable through the conduit to the ARO-US wiring box
ØRemove the cable's external insulation using a crimping tool or cable cutter and
expose eight wires
ØInsert the eight wires into an RJ45 connector, as described in Figure 4
ØUse a crimping tool to crimp the connector.
ØKeep the wiring box clean.

22 23
6.5.1 Put in the battery pack
6.5 connection
Put the battery inside the cabinet (pay attention to the direction of the battery
placement, put the power terminal of the battery on the cabinet right ). Unscrew the
wing nut, Push the battery baffle to the middle and tighten the wing nut. Install the
batteries in order from top to bottom.
Fig 6.5
6.5.2 Connecting Cables
1.When connecting the battery pack cable, find the cables and cut the cable tie.
2.The LINK-IN port of the upper battery pack needs to be inserted with a shorting
cap (battery pack accessory).
upper
battery
lower
battery
PCS
link-in
link-out
BAT-
BAT+
Fig 6.6 Fig 6.7 upper battery
lowe inner link-in
lowe inner BAT-
lowe inner BAT+
link-in
PCS
link-out
Fig 6.9 lowe outer battery
lowe inter BAT+
lowe inter BAT-
lowe inner bat link-in
link-in
link-out
PCS
lowe outer bat link-out
link-in
link-out
PCS lowe outer BAT-
lowe outer BAT+
Fig 6.8 lowe inner battery
link in
link ou t
PCS
6.4 Grounding
AC Grounding
Fig 6.4
Grounding Electrode Terminal (GET)
A grounding electrode terminal may be required to local regulations.
lowe outer link-out

24 25
ØBattery short circuits may cause personal injury. The high transient
current generated by a short circuit will release a surge of energy and
may even cause fire.
ØTo prevent the risk of electric shock, do not connect or disconnect
battery cables when the ARO-US is running
ØBefore connecting ARO-US cables, ensure that the DC switch on the
ARO-US and all the switches connecting to the ARO-US are in the OFF
position, and the ARO-US contains no residual electricity. Otherwise,
the high voltage of the ARO-US and Inverter may result in electric
shock..
ØExposure to battery voltage can result in serious injury. Use dedicated
insulation tools to connect cables.
ØA battery switch and DC fuse can be configured between the ARO-US
and the battery to ensure that the ARO-US can be safely disconnected
from the battery. The recommended DC fuse type is littelfuse KLKD
600V/30A. Make sure the battery positive cable connecting to
positive fuse holder and positive pole of the switch in series, the
battery negative cable connecting to negative fuse holder and
negative pole of the switch in series
ØMake sure the battery cable is connected correctly. That is, the
positive and negative terminals of the battery connect to the positive
battery terminal and negative battery terminal on the ARO-US
respectively.
ØDo not connect loads between the ARO-US and the battery.
ØSince the ARO-US is transformer-less, the battery connected to the
ARO-US cannot be grounded, ensure that the battery output is well
insulated to ground.
ØThe cable distance between the Inverter and the ARO-US should be
less than or equal to 10 meters, ideally less than 5meters.
ØIf the power cables are not installed or routed as required, the
positive or negative terminal of the ARO-US may be short-circuited
to ground ,an AC or DC short circuit may occur and damage the
ARO-US and.
DANGER
WARNING
NOTE
.

26
27
7 Commissioning
High voltages in the Battery system
Risk of death or serious injury due to electric shock
Only electrically skilled persons may perform work on the Battery.
Read all of these instructions, cautions, and warnings for the ARO US
series inverter and associated PV array documentation.
Installation and commissioning must be performed by a licensed electrician.
Disconnect in the “OFF” position, verify the PV input polarity once more
simply by carefully using a 600 V, DC rated digital volt meter and probing
the positive (+) and negative (-) PV array connections.
DANGER
WARNING
7.2 Powering on the system
case1:If the inverter has PV access or mains accessing, or both PV and mains accessing,
the steps of ARO 6.6-19.8H-C1-US accessing to energy storage system are as follows:
1.Turn on the BAT-switch on the left side of the ARO 6.6-19.8H-C1-US;
2.Open the wiring box on the right side and close the BAT-Expansion circuit breaker
(optional, if there has battery expansion)；
3.Turn on the PV switch or the mains switch of the inverter, or turn on the PV switch and
the mains switch at the same time; waiting for 10S, the inverter will send a wake-up
signal to run the ARO 6.6-19.8H-C1-US. By observing the LED indicator in the middle of
the ARO 6.6-19.8H-C1-US cabinet door, confirm that the machine enters the discharge
state (refer to 7.3 for the LED indicator description), indicating that ARO 6.6-19.8H-C1-
US has been successfully started by the inverter.
Case2:If the inverter has no PV accessing and no mains accessing, the steps of ARO 6.6-
19.8H-C1-US accessing to energy storage system are as follows:
1.Turn on the BAT-switch on the left side of the ARO 6.6-19.8H-C1-US;
2.Open the wiring compartment on the right side and close the BAT-Expansion circuit
breaker (optional, if there has battery expansion)；
3.Press and hold power button ≥3S, ≤10S (please refer to item 8 for power button
operation), and observe the LED indicator in the middle of the cabinet door until the
middle green LED flashes quickly, then you can release the button. Wait for 10S, observe
the LED indicator, and confirm that the machine enters the discharge state (refer to 7.3
for LED indicator description), indicating that ARO 6.6-19.8H-C1-US has been manually
forced to start successfully.
7.3 LED description
LED lights are displayed as follows in ARO 6.6-19.8H-C1-US different states .
number C
AR
1-
O
U
6
S
.
s
6
t
-
a
1
t
9
u
.
s
8H- LED light display Remarks
1
Manual forced
Power on state
Middle green light flashing (0.1
seconds on and 0.1 seconds off)
indicate that the manual forced
start is starting. Ring indicator
indicate：
1) power≤25%，LED1 is on,
LED2/3/4 are off;
2）power≤50%，LED1/2 are on,
LED3/4 are off;
3）power≤75%，LED1/2/3 are on,
LED4 are off;
4）power＞75%，LED1/2/3/4 are
on;
The force
power on
button to be
pressed
continuously
for ≥3S, ≤10S,
the button
needs to be
released
when the
green light
flashes (0.1
seconds on
and 0.1
seconds off);
ATL battery module Confirm the sleep status of the ATL battery
module, and most of the LEDs are off
The maintenance compartment interior is
clean and tidy.
All cable routing pipes at the bottom of the
enclosure are sealed.
Unused terminals and ports are fitted with
waterproofing bolts or watertight caps.
The DC outnput power cable, battery cable,
and signal cable are connected correctly,
securely, and reliably.
3
ARO-US installation The ARO-US is installed correctly, securely,
and reliably
Cable layout Cables are routed properly as required by
the customer.
Cable tie Cable ties are secured evenly, with no
sharp protrusions.
Grounding The ground cable is connected correctly,
securely, and reliably.
Switches The DC switch are in the OFF position.
Cable connections
An appropriate installation space has been
chosen, and the installation environment is
clean and tidy.
Unused terminals and
ports
Cable routing pipe sealing
Cleanliness in the maintenance
compartment
Installation environment
No. Check Item Acceptance Criteria
7.1 Checking Before Power-On
2
1
4
5
6
7
8
10
9
11

28 29
2
Standby state
Middle green light flashing (0.5
seconds on and 2 seconds off) indicate
the standby state；Ring indicator
indicate：
1) power≤25%，LED1 is on, LED2/3/4
are off；
2）power≤50%，LED1/2 are on,
LED3/4 are off；
3）power≤75%，LED1/2/3 are on,
LED4 are off；
4）power＞75%，LED1/2/3/4 are on；
3
Charge state
Middle green light is on，Ring
indicator indicate：
1) power≤25%，LED1 flashes,
LED2/3/4 are off;
2）power≤50%，LED1 is on, LED2
flashes, LED3/4 are off;
3）power≦75%，LED1/2 are on, LED3
flashes, LED4 is off;
4）power＞75%，LED1/2/3 are on,
LED3 flashes;
4
Discharge state
Middle button green light is on，Ring
indicator indicate：
1) power≤25%，LED1 is on, LED2/3/4
are off;
2）power≤50%，LED1/2 are on,
LED3/4 are off;
3）power≤75%，LED1/2/3 are on,
LED4 is off;
4）power＞75%，LED1/2/3/4 are on；
5
Alarm state
Middle green light flashes (0.5
seconds on and 0.5 seconds off , 0.5
seconds on and 2 seconds off )indicate
that the alarm state；Ring indicator
indicate：
1) power≤25%，LED1 is on, LED2/3/4
are off;
2）power≤50%，LED1/2 are on,
LED3/4 are off;
3）power≤75%，LED1/2/3 are on,
LED4 is off;
4）power＞75%，LED1/2/3/4 are on；
6
Fault state
Middle red light flashes (1 second on
and 1 second off)indicate that the fault
state；Ring indicator indicate：
1) power≤25%，LED1 is on, LED2/3/4
are off;
2)power≤50%，LED1/2 are on, LED3/4
are off;
3)power≤75%，LED1/2/3 are on, LED4
is off;
4)power＞75%，LED1/2/3/4 are on；
7
Manual forced shut
down state
（Manual forced
shut down state
only turn machine
fron normal state to
standby state, BAT
stop out putting
high voltage）
Middle red light flashing (0.1 seconds
on and 0.1 seconds off) indicate that
the manual shut down is starting；Ring
indicator indicate：
1) power≤25%，LED1 is on, LED2/3/4
are off;
2)power≤50%，LED1/2 are on, LED3/4
are off; 3）
power≤75%，LED1/2/3 are on, LED4 is
off;
4)power＞75%，LED1/2/3/4 are on；
8
Upgrade state
Middle yellow light flashes (1 second
on and 1 second off)indicate that the
upgrade state；Ring indicator indicate:
1) power≤25%，LED1 is on, LED2/3/4
are off;
2)power≤50%，LED1/2 are on, LED3/4
are off;
3)power≤75%，LED1/2/3 are on, LED4
is off;
4)power＞75%，LED1/2/3/4 are on；

30 31
7.4 Powering off the system
If the ARO 6.6-19.8H-C1-US to be forced to turn off under normal charging and
discharging state, you can press and hold Power button≥3S, ≤10S (please refer to item
7.5 for power button operation), and at the same time observing the LED in the middle
of the door, until the middle LED changes from green light ON to red light flashing
quickly, the button can be released.
7.5 Button
1.Button location:
Use a Phillips screwdriver to loosen the captive screw on the forced start button cover on the left
side of the cabinet.
Fig 7.1
3.After the forced start/shut down is successful, install the cover back removed in the
first step.
Wait for 10S, observe the LED indicator, and confirm that the machine enters the standby
state (see 7.3 for LED indicator description), indicating that ARO 6.6-19.8H-C1-US
has been manually forced to shut down successfully. Then turn off BAT-Switch（Please refer
to the accessory manual of the ATL battery module，for the operating instructions of the ATL battery
module）.
Fig 7.2
2. The function of the button
ØBefore the system is powered on, long press the button for 3s~6s, the
internal battery module and ARO will be awakened, and the LED on the front
door will light up.
ØLong press again for 6s~10s until the leaf-shaped light on the front door
flashes quickly, the ARO high voltage DC output will be turned on.
ØWhen the system is running, press and hold for 6s~10s until the leaf-
shaped light on the front door flashes quickly, the ARO high voltage DC
output will be turned off

32 33
8 Decommissioning
8.1 Storing the ARO-US
8.2 Disposing of the ARO-US
9 Growatt Warranty
Please refer to the warranty card.
Do not dispose of faulty ARO-US or accessories together with
household waste. Please accordance with the disposal regulations for
electronic waste which apply at the installation site at that time. Ensure
that the old unit and, where applicable, any accessories are disposed of
in a proper manner.
Store the ARO-US in a dry place where ambient temperatures are always between -20-
45°C/-4-+113℉ .
Datasheet
ARO-US
6.
6H-C1-US
ARO-US
9.9H-C1-US
ARO-US
13.2H-C1-US
ARO-US
16.5H-C1-US
ARO-US
19.8H-C1-US
Battery Data
Energy Capacity
6.6kWh
9.9kWh
13.2kWh
16.5kWh
19.8kWh
Capacity
64Ah*2
64Ah*3
64Ah*4
64Ah*5
64Ah*6
Battery Type
LFP(LiFePQ4)
Nominal Voltage
400V
Operating Voltage
Range
360-480V
Max
Charging/Dischargi
ng Current
9.7A@360V
13.5A@360V
14.3A@360V
14.3A@360V
14.3A@360V
14.3A@360V
Max
Charging/Dischargi
ng Power
3500W/3500
W
5200W/5200
W
5200W/5200
W
5200W/5200
W
5200W/5200
W
General Data
Dimension(W/D/H)
650*320*1160mm
(25.6*12.6*45.7in)
130*320*1160mm
(51.2*12.6*45.7in)
IP Protection
IP56/NEMA Type 4X
Weight
105kg/232Ib
140kg/309Ib
210kg/462Ib
240kg/529Ib
270kg/596Ib
Working
Temperature
-10-+50°C/14-122℉
Storage
Temperature
-20-45°C/-4-+113℉
Features
DoD
90%
Cycle Life
≥6000 cycle
BMS Monitoring
Parameters
SOC, System voltage, current, cell voltage,
cell temperature, PCBA temperature measurement
Communication
Port
RS485/CAN
Warranty
10 Years
Certification
UL1973/IEC62619 (Cell & Pack) / UN38.3+PI965
10.1 Specification Technical Data 10
The ARO-US can be operated in an ambient temperature from-10-+50°C/14-122°F.The
ARO-US US series ARO-US operate at full power and full currents up to a certain
temperature, above which they may operate with reduced ratings to prevent device
damage. The following diagram illustrates how the output power of the solar ARO-US is
reduced automatically in accordance with ambient temperature.
The device should be installed in a well-ventilated, cool and dry location.
Due to tolerance of temperature sensor and ARO-US efficiency difference under different
battery voltage, this derating curve may be a little different from each.
10.2 Ambient temperature