opti-solar GT Series User manual

Solar On-Grid Inverter
GT Series
Installation and Operation Manual
English

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Only an electro-skilled person or trained assembly staff can install or open the
Inverter.

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Before you start…
Thanks for purchasing Solar on-Grid Inverter. SOLAR ON-GRID INVERTER is a
highly reliable product due to innovative design and perfect quality control.
This manual contains important information of installation, operation and safety
reminding of this unit. Be sure to read this manual carefully before enjoying this
product.
If you encounter any problem during installing or running this unit, please check this
manual first before contacting with your local dealer or representative. Most of the
problems you encountered will be solved according to the instruction inside.
Thank you for purchasing our product again. Please keep this manual in safe place
for later use.

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Table of Contents
IMPORTANT SAFETY INSTRUCTIONS ........................................ 4
Installation and operating instructions .......................................... 11
2. Installation .......................................................................... 12
3. System diagram ................................................................. 19
4. Inverter status..................................................................... 19
5. Communication .................................................................. 23
Trouble shooting........................................................................... 25
Specification ................................................................................. 26

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IMPORTANT SAFETY INSTRUCTIONS
1. SAVE THESE INSTRUCTIONS-This manual contains important
instructions for models GT Series that shall be followed during installation and
maintenance of the Solar On-Grid Inverter.
2. Do not remove the covers. No user serviceable parts inside. Refer service to
qualified service personnel.
3. Both AC and DC voltage sources are terminated inside this equipment. Each
circuit must be individually disconnected before servicing.
4. When a photovoltaic array is exposed to light, it supplies a DC voltage to this
equipment.
5. Risk of electric shock from energy stored in capacitors. Do not remove cover
until 3 hours after disconnecting all power sources.
6. This unit is designed to feed power to grid (utility) only, do not connect this unit
to AC power supplier. If connecting to those facilities, AC power supplier will be
damaged.
7. Please take out the unit from packaging box carefully. Check if there is any
outside damage. If you find any damage, please contact with your local dealer.
Safety precautions/safety notes
Only the trained qualified electrical personnel are allowed to perform the
electrical installation, wiring, opening, repair, and/or modification of the Solar On-Grid
inverters. Even when no external voltage is present. The Solar On-Grid inverters
can still contain high voltages and the risk of electrical shock.
The temperature of the heat sinks outside of the device can reach over 70
degree C in normal operation (ambient temperature rating:+45 degree C).There is
the risk of burn injury when these parts are touched.
The following general safety precautions must be observed during all phases of
operating, service, installation, modification, and repair of the device. Failure to
comply with these precautions or with specific warnings elsewhere in this manual
violates safety standards of design, manufacture, and intended use of the device.
The manufacture assumes no liability for the customer’s failure to comply with these
requirements.
Précautions/notes concernant la sécurité
Seul le personnel qualifié et formé est autorisé à effectuer une installation

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électrique, un câblage, à ouvrir, réparer et/ou modifier le dispositif d’inversion
photovoltaïque (PV). Même si aucune tension externe n’est présente, les dispositifs
d’inversion photovoltaïque sont susceptibles de contenir des pièces sous haute
tension et de présenter des risques de choc électrique.
La température des dissipateurs thermiques placés à l’extérieur de l’appareil
peut dépasser 70°C durant le fonctionnement normal (température normale à
température ambiante : 45°C). Il existe donc un risque de brûlure en cas de contact
avec ces pièces.
Les précautions générales de sécurité indiquées ci-dessous doivent être
observées durant toutes les phases de fonctionnement, d’entretien, d’installation, de
modification et de réparation de l’appareil. Le non suivi de ces précautions ou des
avertissements spécifiques indiqués ailleurs dans ce manuel viole les normes de
sécurité concernant la conception, la fabrication et l’utilisation prévue pour cet
appareil. Le fabricant n’assume aucune responsabilité si l’utilisateur ne suit pas ces
exigences.
zSafety symbol
To reduce the risk of injury and to ensure the continued safe operation of this
product, the following safety instructions and warnings are marked in this manual.
WARNING, risk of electric shock
Presents safety information to prevent injury or death to users
and /or installers.
AVERTISSEMENT,risque de choc électrique
Contient des renseignements importants concernant la sécurité visant à éviter
les risques de blessures graves ou mortelles pour les utilisateurs ou les installateurs.
CAUTION (refer to accompanying documents)
Presents information to prevent damage to this product.
ATTENTION (consultez la documentation accompagnant le produit)
Attire l’attention sur des renseignements visant à éviter les risques de dommages
pour le produit.

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Equipment grounding conductor symbol
The earth ground symbol
zIntended use
Solar On-Grid inverters shall be installed according to the safety regulation
applied for installations to meet the following qualifications:
1. electrical installation must be carried out correctly to meet the applicable
regulations and standards;
2. Solar On-Grid inverters be mounted in an enclosed and well ventilated
environment to against rain, condensation, moisture and dust;
3. Solar On-Grid inverters shall be installed permanently;
4. Solar On-Grid inverters shall be installed according to the instructions stated
in this manual;
5. Solar On-Grid inverters shall operate according to the technical specifications;
zGeneral safety precautions
1. Personnel must remove all conductive jewelry or personal equipment prior to
installation or service of the device, part, connectors, and /or wiring.
2. Trained qualified personnel are required to mount, operate, correct and/or repair
this device.
3. Licensed electricians are required to install permanently wired equipment.
4. Stand on an insulated surface when working on the operating device (i.e.. ensure
that there is no grounding).
5. Instructions in this manual must be precisely followed and all information on
cautions or warning must be adhered to.
6. Use proper lifting techniques whenever handling enclosure, equipment or parts.
7. The Solar On-Grid inverters must be provided with an equipment-grounding
conductor connected to the AC grounding conductor directly.
8. The Solar On-Grid inverters must be provided with a DC grounding electrode
conductor to be connected to an AC equipment-grounding conductor directly for
a single point ground.
9. The grounded conductor must be ungrounded and energized when ground fault
is indicated.
10.The AC neutral connection is only for voltage sensing and shall be neither used

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to carry currents nor bonded to ground.
11.The list does not contain all measures pertinent to the safe operation of the
device. If special problems arise which are not described in sufficient detail for
the purposes of the buyer, contact your specialized dealer or technician.
zSafe installation and operation
1. Installation of the device must be in accordance with the safety regulations (e,
g.UL1741\C22.2) and all other relevant national or local regulations. Correct
grounding and short circuit protection must be provided to ensure operational
safety.
2. Read all instruction and cautionary marks in the manual before installation of this
device.
3. Switch off the circuit breakers before installation and wirings; never stand on a
wet location when work on installation and wiring.
4. Check both of the AC and DC connections with a volt meter prior to any
installation or removal procedures.
5. Enclose the outer covering well before switch on the circuit breakers.
6. Place the inverter in an environment with well ventilation and protection against
rain, condensation, moisture and dust.
7. Even no external voltage is present; the Solar On-Grid inverters can still
contain high voltages and the risk of electrical shock. Allow 3 hours for the
inverter to discharge the energy completely.
8. Temperature of the heat sinks outside of the device can reach hot enough in
normal operation to cause skin burn injury when these parts are touched. Pay
attention on the high temperature components and sharp edges.
9. To prevent the risk of fire hazard, do not cover or obstruct the heat sink.
10.Allow changes in your electrical system to be carried out only by qualified
electricians.
WARNING, risk of electric shock
AVERTISSEMENT,Risque de choc électrique
zRepair and maintenance
The Solar On-Grid Inverter contains no user serviceable parts. Only PV-trained service

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staffs are authorized to carry out for repairs and maintenance of the unit. Please return
the device for repair and maintenance.
zRéparation et entretien
Cet onduleur Solar On-Grid ne contient aucune pièce réparable par l’utilisateur.
Seuls des techniciens spécialement formés à la technologie photovoltaïque (PV) sont
autorisés à effectuer les réparations et l’entretien de cet appareil. Veuillez retourner
l’appareil pour toute réparation ou tâche d’entretien.
zWiring the inverter
zInput/output terminals: use wire size No.10-12AWG (Nylon-insulated, cord end
terminal), 90
ο
Copper wire.
zCrimped and sealed copper should be used to connect the DC cables to the DC
terminals of the INVERTER. Soldered cable lugs are also acceptable. Torque all
AC wiring connections to 8-10 inch-pounds.
zTorque all DC cable connections to 8-10 inch-pounds .Be extra cautious when
working with metal tools on. The potential of dropping a tool causing other
electrical parts resulting in sparks could cause an explosion. Tools required for
AC wiring connections: slotted screwdriver 1/8"(3 mm).
zReconfirm that all connections have been performed properly and all screws are
properly tightened.
zBranchement de l’onduleur
zTerminaux d’entrée et de sortie : utilisez des fils de cuivre de calibre
nº 10-12(Nylon isolés, fin cordon administration), 90 °C.
zeffectuer le raccordement des câbles C.C. aux terminaux C.C. de l’ONDULEUR.
Les cosses de câble soudées sont également autorisées. Veuillez consulter la
section sur les diverses tailles de câbles de batterie pour plus de détails sur leur
utilisation avec cet appareil. Serrez tous les branchements de câbles C.A. à un
couple de 8-10 pouce-livre.
zSerrez tous les branchements de câbles C.C. à un couple de 8-10 pouce-livre.
Soyez extrêmement prudent lorsque vous utilisez des outils en métal sur ou à
proximité de batteries. La chute d’un outil sur la batterie ou sur tout autre
composant électrique pourrait provoquer des étincelles et entraîner une
explosion. Outils requis pour les raccordements C.A. :tournevis pour écrou à
fente 3 mm(1/8 po).
zAssurez-vous que tous les raccordements ont été correctement effectués et que
toutes les vis soient bien serrées.
WARNING!
Connection of the AC cable
Reconfirm that the circuit breaker to the main utility is switched OFF before connect
the power cable from the breaker to the AC connector.

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AVERTISSEMENT!
Raccordement du câble C.A.
Assurez-vous que le disjoncteur de l’appareil principal est bien désactivé avant de
raccorder le câble d’alimentation du disjoncteur au connecteur C.A.
CAUTION!
Connection of the DC cable
Polarities of each DC input voltage from a PV string shall be precisely correctly
connected to the “+”(positive) and “-“(negative) terminals of a pair respectively. The
DC voltage must be less than 450V in any condition.
ATTENTION!
Raccordement du câble C.C.
Les polarités de chaque entrée d’alimentation C.C. d’une chaîne PV devront
impérativement être correctement raccordées aux terminaux « + » (positif) et « - »
(négatif) de chaque paire. La tension d’alimentation C.C. doit à tout moment rester
inférieure à 450 V.
WARNING!
GFDI Fault happen
Please check the GFDI LED display and OPTI-Solar solar control error status
carefully before GFDI Switch turn on.
AVERTISSEMENT!
Dysfonctionnement GFDI
Veuillez attentivement vérifier le voyant GFDI et le statut d’erreur du contrôle solaire
OPTI-Solar avant d’enclencher le commutateur GFDI.
WARNING!
Route the DC connection cables to the Solar On-Grid Inverters away from any possible
hazards that could damage the cables.
AVERTISSEMENT!

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Veillez à installer les câbles d’alimentation C.C. vers les onduleurs Solar On-Grid
à l’écart de tout obstacle qui risquerait de les endommager.
WARNING!
Hazardous voltage is still present on the device after disconnection of all PV DC
inputs. Allow 3 hours for the inverter to discharge the energy completely.
AVERTISSEMENT!
Une tension dangereuse est toujours présente dans l’appareil même une fois toutes
les entrées d’alimentation C.C. PV débranchées. Accordez 3 heures à l’onduleur
pour qu’il se décharge entièrement de toute énergie.
WARNING!
HIGH LEAKAGE CURRENT EARTH CONNECTION ESSENTIAL
BEFORE CONNECTING SUPPLY.
AVERTISSEMENT!
UNE MISE A LA TERRE POUR COURANT DE FUITE EST ESSENTIELLE
AVANT DE BRANCHER L’ALIMENTATION.

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Installation and operating instructions
1. Overview
Front view Bottom view
Display and connections
AC output terminal
LCD Display:
Showing the inverter
status
Display
information switch
Operation LED,
Blue, Working Mode
Fault LED,
Red, fault status
Optional
communication slot:
SNMP and RS485
GFDI switch
AC output breaker
RS232 communication
USB
DC input terminal block
Fault LED,
Red, GFDI fault
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2. Installation
Before starting installation please check the following items:
This unit is designed for outdoor usage. But it is suggested that the unit can’t be
exposed under rain or water directly and use a shelter to protect the unit would
be better.
Do not expose this unit to the sun directly. This may reduce the output power
due to high temperature.
Check the ambient temperature of installation is within specification
(-25~+45°C).
The grid to be connected is 208VAC \ 240VAC system.
The connection to grid is approved by utility company.
The installation must be done by qualified personnel.
Though Solar on-grid inverter can be installed where temperature up to +45°C,
we still strongly recommend that it should be installed where ambient temperature
in the range of 0~+40°C.
Mount Solar on-grid inverter to the wall
1. Select a wall or solid place can support the inverter.
2. Convection cooling space required. To dissipate the heat generated by inverter,
92cm space at least from the Solar on-grid inverter bottom to the end is necessary.
3. Mark the hole position according to following table or mounting template
attached.
Installation murale de l’onduleur Solar On-Grid Inverter
25cm space
92cm space
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1. Choisissez un mur ou un support solide sur lequel fixer l’onduleur.
2. Un dégagement de refroidissement par convection est nécessaire. Afin de
dissiper l’énergie générée par l’onduleur, un dégagement minimum de 92 cm
entre le bas de l’onduleur Solar On-Grid et la surface est requis.
3. Indiquez l’emplacement des orifices de fixation en vous aidant du tableau
ci-dessous ou du modèle ci-joint.
Model GT 1500 GT 2000 GT 3000 GT 4000
W (mm) 347.6 347.6 347.6 546
H (mm) 257257257257
4. Drill the holes with screw. Percez les orifices et insérez les vis.
5. Hang the inverter on the 4 screws. Accrochez l’onduleur aux 4 vis.
6. Drive “fix screw” on bottom leg to fix the inverter.
Be sure to check the mounting of inverter. Try to lift up the inverter on the bottom,
make sure it is firmly attached.
Select the installation location carefully. The height of inverter is recommended to be
observed, so that user can check the inverter status easily; the wall must be firmly
enough, this can prevent slight vibration during inverter w wo or rk ki in ng g. .
Serrez la « vis de maintien » située sur le support inférieur afin de verrouiller

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l'onduleur en place.
Vérifiez la bonne installation de l’onduleur. Pour cela, essayez de soulever l’onduleur
par le bas; il ne devrait pas bouger.
Sélectionnez l’emplacement de l’onduleur avec soin. Il est recommandé d’installer
l’onduleur à une hauteur permettant à l’utilisateur une vérification aisée du statut de
l’appareil; le support mural doit en outre être solide afin d’éviter les légères vibrations
générées par le fonctionnement de l’onduleur.
Please open the wiring compartment cover to setup the AC & DC wires,
the reference following the National electric code, ANSI/NFPA 70.

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Veuillez ouvrir la porte du boîtier de raccordement afin de connecter les
fils d’alimentation C.A. et C.C. en suivant la norme ANSI/NFPA 70 du Code
national de l’électricité.

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Connect to grid (AC utility)
1. Check the grid (utility) voltage and frequency, 208VAC \ 240VAC, 60Hz,
Single phase.
z208VAC L-N-G
z240VAC L1-L2-N-G
2. Turn off the AC breaker between AC wire and utility.
3. For GT 4000, connect AC wires as follows:
zInsert Line wire to L1\L2, Neutral wire to NandGwiretopin
zScrew the wires to the AC terminal block. Make sure it is perfectly matched and
tighten.
4. Suggested wire size for AC cable:
Raccordement au réseau électrique (appareil C.A.)
1. Vérifiez la tension et la fréquence du réseau : 208 VCA \ 240VAC, 60 Hz,
monophasé.
2. Désactivez le disjoncteur d’alimentation C.A. entre le fil C.A. et l’appareil.
3. Pour le GT 4000, effectuez les raccordements comme suit :
zRaccordez le fil de ligne sur L1\L2, le fil neutre sur Net le conducteur de terre
àlatige
zVissez les fils sur le bloc du terminal d’alimentation C.A. Vérifiez soigneusement
la bonne correspondance des fils et serrez.
4. Suggestion de taille de fil pour câble C.A. :
(4) (3) (2) (1)
AC output
Breaker
GFDI
switch
DC terminal block
(1) PV (+)
(2) PV (-)
(3)GND
AC terminal block
(1)GND
(2)N
(3) L2
(4) L1
(3) (2) (1)

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Model φ(mm) AWG no.
GT 1500 ≥1.2 ≤16
GT 2000 ≥1.2 ≤16
GT 3000 ≥1.7 ≤14
GT 4000 ≥2.0 ≤12
Ground wire ≥2.59 ≤10
Connect to PV array (DC)
1. Turn off the GFDI switch.
2. Make sure the maximum PV open circuit voltage (Voc)of each PV string is
less than 450VDC UNDER ANY CONDITION. We recommend use PV array
which the range of Voc is 380VDC to 400VDC under 25C ambient.
3. Connect positive from array to PV(+) terminals and negative to PV(-) terminals.
DC terminal on GT 4000 can withstand 20A DC current at most.
4. After installing the wiring compartment cover, then turn on the GFDI switch.
Note:
B
Be ef fo or re e c co on nn ne ec ct ti in ng g t to o D DC C t te er rm mi in na al ls s, , p pl le ea as se e m ma ak ke e s su ur re e t th he e p po ol la ar ri it ty y i is s c co or rr re ec ct t. .
I
In nc co or rr re ec ct t c co on nn ne ec ct ti io on n w wi il ll l d da am ma ag ge e t th he e u un ni it t f fo or re ev ve er r! !
Raccordement au réseau PV (C.C.)
1. Désactivez le commutateur GFDI.
2. Assurez-vous que la tension maximale du circuit PV ouvert (Voc) de chaque
chaîne PV est inférieure à 450 VCC EN TOUTE CIRCONSTANCE. Nous
recommandons l’utilisation d’un réseau PV avec une plage Voc de 380 VCC à
400 VCCsous 25 °C ambiant.
3. Branchez le raccord positif du réseau sur le terminal PV (+) et le raccord négatif
sur le terminal PV (-). Le terminal C.C. du modèle GT 4000 peut supporter une
tension C.C. de 20 A au maximum.
4. Une fois les raccords effectués, replacez la porte du boîtier et réenclenchez le
commutateur GFDI.
Note :
Avant tout raccordement aux terminaux C.C., pensez à vérifier les polarités. Une
inversion des polarités endommagerait irrémédiablement votre appareil.

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Working mode Checking
1. After setup the wiring compartment cover and turn on the GFDI switch, the
message on the LCD display should be in the sequence of “INV Waiting” →“No
Utility” and the RED fault LED keeps on.
2. Turn on the AC breaker in previous section; check whether the inverter starts to
work.
3. If inverter works normally, the LCD will show “Working mode”. That is the power
feed to grid.
4. The checking is completed.
5. After setup the connection, then close the outside cover.
Vérification du mode de fonctionnement
1. Une fois tous les raccordements effectués, le boîtier refermé et le commutateur
GFDI réenclenché, l’écran ACL devrait afficher les messages suivants dans
l’ordre : « INV Waiting » (onduleur en attente) →« No Utility » (aucun appareil) et
le voyant ROUGE de dysfonctionnement devrait être allumé en continu.
2. Enclenchez alors le disjoncteur mentionné dans la section précédente et vérifiez
la mise en route de l’onduleur.
3. Si l’onduleur fonctionne correctement, l’écran ACL affiche « Working mode »
(mode de fonctionnement). L’alimentation du réseau est en cours.
4. La vérification est terminée.
5. Une fois ces vérifications effectuées, refermez la porte externe de l’appareil.

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3. System diagram
1. The connection of whole PV system is indicated as figure.
2. PV array: Provide DC power to GT 4000 inverter.
3. GT 4000 inverter: Convert DC power from PV array to AC (Alternative Current)
power. Because GT 4000 is a grid-connected inverter, it works to control its
current amplitude according to power provided from PV array. GT 4000 always
try to get maximum power from PV array.
4. Connection system: The “interface” between Utility and inverter. It may consist of
electrical breaker, fuse and terminals for connection. To make sure safety, this
part must be designed by qualified technician.
5. Utility: It is also call “grid” in this manual. The way your power company provides
power to your place. Please note that, GT 4000 can connect to low-voltage
system (namely, 208VAC\ 240VAC ) system only.
4. Inverter status
Solar on-grid inverter is designed to be friendly; therefore, the status of inverter can
be easily understood by panel display. All the possible information is shown in the
following table.
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