Trina Solar DEG19C.20 User manual

APPLICABLE MODULE TYPE
Module type
Module code
Monofacial products
DE09
DE09.05
DE09.08
DE18M(II)
DE18M.08(II)
DE19
DE20
DE21
Bifacial products
DEG18MC.20(II)
DEG19C.20
DEG20C.20
DEG21C.20
NEG19C.20
NEG20C.20
NEG21C.20
Contents of this document are subject to change without notice.
For the latest document please refer to Trina Solar official website: www.trinasolar.com.
UM-M-0002/Ver.C Copyright © August, 2021. Trina Solar Co., Ltd.

Table of Contents
1 INTRODUCTION........................................................................................................ 1
2 SAFETY PRECAUTIONS ........................................................................................... 1
3 SITE SELECTION AND ANGLE.................................................................................. 3
4 UNLOAD/TRANSPORTATION/STORAGE................................................................... 4
5 UNPACKING INTRODUCTION................................................................................... 9
5.1 UNPACKING SAFETY......................................................................................................9
5.2 UNPACKING STEPS......................................................................................................10
6 INSTALLATION ....................................................................................................... 12
6.1 INSTALLATION SAFETY ...............................................................................................13
6.2 INSTALLATION METHOD..............................................................................................14
6.2.1 SCREW INSTALLATION..........................................................................................14
6.2.2 CLAMP INSTALLATION...........................................................................................16
6.2.3 SINGLE-AXIS INSTALLATION.................................................................................20
6.3 GROUNDING .................................................................................................................21
6.4 ELECTRICAL INSTALLATION .......................................................................................22
6.4.1 SAFETY INSTRUCTION ..........................................................................................22
6.4.2 WIRING....................................................................................................................23
6.4.3 FUSING....................................................................................................................25
7 PV MODULE MAINTENANCE .................................................................................. 25
7.1 VISUAL INSPECTION AND REPLACEMENT ................................................................25
7.2 CONNECTOR AND CABLE INSPECTION.....................................................................26
7.3 CLEANING.....................................................................................................................26
8 REPORTING TECHNICAL ISSUES AND CLAIMS ..................................................... 28
APPENDIX A: TRACKERS COMPATIBILITY ................................................................... 29

Trina Solar User Manual | Vertex Series Modules
1
1 INTRODUCTION
First, thank you for choosing our products. This manual shall only apply to the installation,
maintenance and use of the 210 Vertex series solar modules manufactured by Trina Solar Co., Ltd.
(hereinafter referred to as "Trina Solar"). Failure to follow these safety instructions may result in
personal injury or property damage.
The installation and operation of solar modules requires specialized skills and should only be
performed by professionals. Please read the "Safety and Installation Instructions" carefully before
using and operating the modules. The installer must inform the end customers (or consumers) of the
above matters accordingly.
The term "Module" or "PV Module" in this manual refers to one or more 210 Vertex series solar
modules. Please retain this manual for future reference.
DISCLAIMER
Trina Solar reserves the rights to change this User Manual without noticing in advance. This manual
is not a warranty document and does not have any warranty meaning. Failure of the customers to
follow the requirements outlined in this manual during the installation of the module will result in the
invalidity of product's limited warranty. Trina Solar is not responsible for any damage of any kind,
including but not limited to any physical damage, injury or property loss resulting from module
operation, improper system installation and failure to follow the instructions in the manual.
Warning
Otherwise, the product may be
damaged or the user's personal
safety may be endangered.
Prohibition
Otherwise, the product may be
damaged or the user's personal
safety may be endangered.
2 SAFETY PRECAUTIONS
GENERAL SAFETY
Before attempting to install, wire, operate and maintain the modules, please read and understand all
safety instructions. The module’s solar cell will generate direct current (DC) when it is exposed to
direct sunlight or other light sources, and direct contact with electricity live parts of the module, such
as terminals, can result in injury or death, irrespective of whether or not the module and the other
electrical equipment are connected.
Regardless of whether the PV module is connected to the system or not, when
conducting such as installation, grounding, wiring, or cleaning work, appropriate
protective equipment such as insulation tools, hard hats, insulated gloves, safety
belts and safety insulated shoes should always be used to avoid direct contact
with the modules, reduce the risk of electric shock and protect your hands from
sharp edges.
Under normal conditions, a solar photovoltaic module is likely to experience conditions that produce
more current and/or voltage than reported at standard test conditions. The requirement of National
Electric Code (NEC) in Article 690 shall be following to address these increased outputs. In
installation not under the requirement of the NEC, the values of Isc and Voc marked on this module
should be multiplied by a factor of 1.25 when determining component voltage ratings, conductor
current ratings, fuse sizes and size of controls connected to the PV output.

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Do not stand, sit, walk, or jump directly on the module package or the module itself.
The PV module does not contain any serviceable parts. Do not disassemble
or move any part of the module.
Do not damage or scratch the front- or backside surfaces of the module, as
scratches may directly affect the product safety. If you detect any scratches
or cuts on the module front- or backside, please do not use the module at all.
Do not put heavy objects or sharp objects on modules.
Do not pull, scratch or bend the output cables with force. Otherwise, the
insulation part of the output cables will be damaged, leading to current
leakage or electric shock.
Do not insert any conductive material into the connectors attached to the
module.
Do not connect or disconnect the module when there is a current flow, or
connected with any powered system.
Do not use water to extinguish fires when the module is connected to any
powered system.
Do not artificially concentrate sunlight on the module.
Do not drop PV modules or allow objects to hit or fall directly on the modules.
Do not carry modules on your head.
Do not carry modules with ropes.
Do not carry modules on your back.
During the normal operation of modules, they should not be blocked by buildings, trees, chimneys,
etc. at any time of the day.
Keep the junction box cover closed at all times.
FIRE SAFETY
When install modules on the rooftop, please refer to local laws and regulations before installation
and abide by the requirements on building fire protection. The roof should be covered with a layer of
fireproof materials with suitable fire protection rating and make sure that the backsheet and the
mounting surface are fully ventilated. Different roof structures and installation methods will affect
fireproof performance of buildings. Improper installation maylead tothe risk of fire. Please useproper
module accessories such as fuse, circuit breaker and grounding connector according to local
regulations.
Do not install or use modules near open flames or flammable and explosive materials.

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3 SITE SELECTION AND ANGLE
INSTALLATION ENVIRONMENT SELECTION
Trina Solar recommends that the module should be installed in a working environment with an
ambient temperature of -20℃to 50℃, but not exceed the temperature limit of -40℃to 85℃.
The modules shall be installed in shadow-free areas throughout the year. Do not install the PV
modules at a place where water damage may occur.
When installing solar modules onthe rooftop, a safe working area must be left between the roof edge
and the outer edge of the PV array.
When stacking module on the rooftop, the rooftop should be tested for such loading and the
installation plan must be developed in accordance with the specification requirements.
When using the modules in areas with high wind load and snow load, the supporting structure design
should be carried out in strict accordance with the local design specifications, to ensure that the
external load does not exceed the mechanical strength limit that the modules can withstand.
Salt spray corrosion tests conducted in accordance with IEC 61701 have shown that Trina Solar's
PV modules can be installed near offshore or in the corrosive environment. However, the modules
shall not be immersed in water or in a permanently wet environment (e.g., fountains, spindrift, etc.).
There is a risk of corrosion if the module is placed in a salt spray (i.e., a marine environment) or in
an environment containing sulfur (e.g., volcanoes, etc.).
In the place, 50~500 m away from the sea, stainless steel or aluminum materials need to be used in
where contacting PV modules, and the installation position must be processed with anti-corrosion
treatment. For detailed installation requirements, please refer to the Trina Solar Coastal Application
White Paper, available from https://www.trinasolar.com/en-glb/resources/downloads.
INCLINATION SELECTION
The tilt angle of the PV module refers to the angle between the module and the horizontal ground.
The tilt angle shall be selected according to the local conditions for different projects. Trina Solar
recommends that the mounting tilt angle should not be less than 10°. For specific tilt angles, it shall
be chosen in accordance with the local design procedures, specifications and regulations, or
following the recommendations of the experienced PV module installers.
The PV modules is highly recommended facing south in the northern hemisphere and north in the
southern hemisphere to get the best performance.
Following the local regulations, if PV modules are installed in North America and any other country
or region comply to UL standard. A minimum of 155 mm (6.10 inch, recommended value) clearance
shall be left between the PV module (backside) and the wall or roof surface. If other installation
methods are used, the PV module's UL certification or fire class rating may get affected.

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4 UNLOAD/TRANSPORTATION/STORAGE
Please make sure to have sufficient safe distance during forklift operation to prevent people from
standing or passing on both sides.
When unloading using a forklift, particular care should be taken to control the travel speed and
prevent tilting during cornering.
In any circumstances, for vertical landscape packages, it shall not be stacked more than two layers;
for vertical portrait packages, stacking is not allowed.
The working ground needs to ensure that the packaging box can be placed horizontally and steadily
to avoid tipping.
Example for vertical landscape package and vertical portrait package is shown as follows:
UNLOADING
Upon arrivalof the modules, please check the packaging box is in good condition, and check whether
the module type and quantity on the outer packaging are consistent with the delivery order, if
anything is wrong, please contact Trina Solar logistics and sales staff immediately.
1. Unloading with a crane
When crane is used to unload the modules, please choose and use specialized tooling according to
the weight and size of the module. Please adjust the position of the sling to keep the modules steady.
To ensure the safety of the module, wooden sticks, boards or other fixtures of the same width as the
outer packing cases should be used on the upper part of the box to prevent the sling from squeezing
the pallet and damaging the modules. When placing the modules, do not lower the packing box too
quickly and put it on a flat ground.
For vertical landscape packages, do not lift up more than FOUR pallets
of modules at once; for vertical portrait packages, do not lift up more
than TWO pallets of modules at once.
Do not unload modules under the weather conditions of wind more than 6 class (in Beaufort scale),
heavy rain or heavy snow.
2. Unloading with a forklift
The loading dock should be as the same height as the underside of the carrier.
The forklift should be driven at a controlled speed of ≤5 km/h in straight, and ≤3 km/h for turning,
so as to avoid sudden stop and rapid start.
Since the packing box will block the sight of the forklift driver, it is recommended to drive backwards
during the forklifting, and arrange for special supervision and command to prevent bumping into
people or items causing personal injury or damage to the modules.
Vertical landscape package
(short-side vertically placed)
Vertical portrait package
(long-side vertically placed)

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Please choose a flat and solid ground to place the module package after transportation to the
installation site.
Forklift operation in warehouse
When using a forklift to unload the modules, please choose a forklift with suitable tonnage according
to module weight. Theforks should go into the pallet at least 3/4 of the pallet depth during unloading
(the forks length L ≥ 3/4 of pallet length).
In order to ensure better stability during forklift transport, the forks distance (W) should be adjusted
to the maximum position without any interference.
Please drive slowly and do not allow forks to hit the cartons or pallets. Please place buffer protection
material (in yellow) in advance to prevent the inside modules being damaged due to the external
force.
It is recommended to extend the height or width of the forklift backrest to prevent directing touch
with the module glass.
Please also pay attention to the following precautions when unloading (taking vertical portrait
packages as an example).
Recommend to secure the module
package to the forklift with a safety
rope, transport horizontally with no
person standing on either side.
Prevent collision on the
top when unloading from
the container.
No tilting storage.
No collision on the module glass.
Control the speed to prevent
tipping.

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Forklift operation at project site (for handling with vertical portrait package only)
The forklift operation at project site refers to the transportation of modules between the storage site
and the installation site after they arrived at the project storage site.
Forklift requirements:
①Forks
The fork length (L) should ≥ 1.1 m.
The forks distance (W2) should be adjusted to the maximum position without any interference to the
pallet.
②Backrest
The backrest length (H) should ≥ 1.7 m; the backrest width (W1) should ≥1.5 m.
The backrest shall perpendicular to the fork, and the structure must be firm (withstand pressure ≥ 15
kN).When the entire module package leans on the backrest, the backrest shall not be deformed due
to pressure.
③Beam
④Buffer material
The contact position between the top beam and the module package should be fixed with a buffer
material (preferably silicone, rubber, EPE) to prevent the forklift from damaging the modules.
*Forklift specifications and operating practices include, but are not limited to, the above-mentioned matters.

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Please also pay attention to the following precautions:
SECONDARY TRANSPORTATION
The packaged modules can be transported by land, sea or air. During transportation, make sure that
the package is fixed with packing belts securely on the shipping platform without any movement.
If the unpacked modules need to be transported to other places, it is recommended to pack the
single module together in a package to the maximum number allowed, and fixed with inner packing
belts (2100N force recommended). Finally, cover it with the packaging carton box and fix it with the
same number of packing belts as before.
If the number of modules need to be packed is less thanthemaximum number allowed in a package,
the modules need to be fixed and secured to the center of the pallet for utility packaging (the following
figure to the left) or on the side for distribution packaging (the following figure to the right), and fixed
with inner packing belts (2100N force recommended). Finally, cover it with the packaging carton box
and fix it with the same number of packing belts as before. Do not put the unfulfilled package on the
lower layer when transported.
Exit the forklift slowly.
The module package shall lean on
the backrest, the package must be
fixed using a safety rope with a
tensile strength of ≥ 2000 kgf, and
control the speed to prevent tip-off.
Place the module package smoothly on
the ground, untie the safety rope after
the confirmation of no risk of tilting.
The forklift must be operated from
the long side of the pallet (forks enter
slowly into the pallet from the long
side). Do not collide with the module.
Both sides of the beam shall contact
with the package at the same time.

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Please use appropriate means of transport to transport the modules. Do
not use pedicab to transport or handle the modules.
Secondary transport is not allowed for the monofacial modules that are
packaged horizontally.
There is no stacking of pallets allowed (for both vertical landscape and
vertical portrait packages), when transporting with small trucks. Please fix
the package to the vehicle using e.g. ropes and control the driving speed according to the road
conditions.
When using box trucker and flatbed trucker transport the modules, the module packages should be
placed close to each other without any gap. The empty space needs to be filled to prevent the
package moving backwards to the rear of the truck. Additionally, every package needs to be fixed
using e.g. ropes to the vehicle when transporting with the flatbed trucker.
Do not allow pallets to exceed the loading area of the transport vehicle.
STORAGE
Modules should be stored in a dry and ventilated environment on a flat ground, to avoid damage or
dumping of the modules due to ground deformation or collapse.
Storage requirements: relative humidity < 85% and temperature range of -40°C to 50°C.
Do not remove the original package and keep the wrapping film and carton
box in a good condition, if the modules require long-distance transport or
long-term storage.
For long-term storage, it is recommended to store the modules in a
standard warehouse with regular inspection, and under confirming of your
personal safety, reinforce the package in a timely manner if any anomalies
are found.
The warehouse shelves should have sufficient carrying capacity and storage space, regular
inspection is required to ensure the storage safety.
If you need to store the modules in the project site, do not choose soft ground and the ground that
is easy to collapse, should choose a hard ground or a higher ground with flat surface to ensure the
module packages not collapsing and tilting for long-term storage.
In rainy weather, please fully cover the modules and pallets with a rain protection and take moisture-
proof measures on pallets and cartons to prevent collapse and moisture ingress. Under sun or wind,
remove the rain cloth to allow the package to dry as soon as possible, prevent package collapse
caused by the rain.
Do not allow the pallets to soak in water. The ground drainage measures should be done previously
for the storage site to prevent a large amount of water accumulation on the ground after rain, causing
the ground to soften, sink, etc.
Do not allow unauthorized persons to access the module storage area.
The modules should be centrally stored.

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5 UNPACKING INTRODUCTION
5.1 UNPACKING SAFETY
Before unpacking, please check the product type, power bins, serial number and relevant
suggestions on the A4 paper of the packaging box, and read the unpacking instructions carefully.
Custom unpacking methods are prohibited.
Before unpacking, please make sure that the packaging box is in good condition, it is recommended
to use art knife to remove the packing belt and wrapping film. Violent removal is prohibited to avoid
scratching the modules in the box.
Please check that the number of modules in the box and the barcode information on the module
frame are consistent with the information on the A4 paper on the packaging box.
Please follow the recommended unpacking steps to unpack the modules. When unpacking, it must
be operated by two or more people at the same time. Always wear insulating gloves when handling
the modules.
If all the modules are not taken out after unpacking, the remaining modules shall be placed
horizontally and repackaged to prevent them from tipping. When packaging, please note that the
glass side of the bottom module should face up, the glass side of the middle modules should face
down, and the glass side of the top module should face up. Stacks of modules should contain no
more than 16 modules, and the frames should be aligned.
For matters regarding the unpacking stand supporter, please contact Trina Solar sales.
In windy weather, it is recommended not to carry the modules, and the unpacked modules should
be properly secured.
Do not unpack the modules outside under rain and snow conditions.
Do not carrythe moduleby one personto prevent the modulefrom slipping and hitting other modules,
causing scratches, cracks, or deformation on the modules.
Do not lift modules by their cables or junction box.
Before removing the inner packing belts, please take measures to protectthe modules from dumping.
If unpacking the vertical landscape packages on non-horizontal ground, anti-tilting measures should
be taken.
The vertical portrait packages have a high center of gravity and are prohibited to unpack on non-
horizontal or soft grounds to avoid personal injury or even death.
When unpacking vertical portrait package, do not stand on the back of the stand supporter, please
operate in strict accordance with the requirements of the unpacking instructions..
When removing the packing belts in vertical portrait package, take care not to hurt yourself (face,
eyes, etc.).

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Do not stand on the pallet during unpacking, please carry the modules from sides of the pallet.
Do not move the stand supporter during unpacking to prevent the modules being tilted.
Do not lean the module on any instable objects, such as poles or mounting columns.
Do not support the back of the modules directly with materials such as wooden strips.
5.2 UNPACKING STEPS
Method A: Unpacking for DE20 / DE21 / DEG21C.20 / NEG21C.20 etc. series modules with vertical
portrait package.
1) Remove the wrapping
film and packing belts.
2) Remove the top cover
and sealing tape.
3) Remove the carton box.
4) Place the stand supporter
from the glass or backsheet
side.
6) Cut off all the horizontal
packing belts.
7) When there are 1-2 vertical
packing belts remaining, push
the module gently to tilt toward
the stand supporter.
8) Cut off the remaining packing
belts so that the modules rest on
the stand supporter.
9) Take out the modules in
order.
5) Pull out the 4 levers from
both sides of the pallet.

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Method B: Unpacking for DE18M(II) / DE18M.08(II) / DEG18MC.20(II) / DE19 / DEG19C.20 /
NEG19C.20 etc. series modules with vertical landscape package.
Method C: Unpacking from one side for DE09 / DE09.05 / DE09.08 etc. series modules with vertical
landscape package.
1) Remove the wrapping film
and packing belts.
2) Remove the top cover and
the cartons.
3) Cut off all the horizontal
packing belts.
4) When there are 1-2 vertical
packing belts remaining, push
the module gently to tilt toward
the stand supporter.
5) Cut off the remaining
packing belts.
6) Take out the modules in
order.
1) Cut all the packing belts and
take out the wrapping film.
2) Remove the top cover.
3) Remove the side cover.
4) Take out the modules from one side.

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Method D: Unpacking from one side for DE18M(II) / DE18M.08(II) / DEG18MC.20(II) / DE19 /
DEG19C.20 / NEG19C.20 etc. series modules with vertical landscape package.
6 INSTALLATION
1) Place the carton box on a flat
ground, then cut the packing
belts. Start from step 3 if there
are no plywood attached.
2) Remove the attached plywood.
3) Prepare for unpacking (do
not stack the module),
unpacking instruction can be
seen on the packing box.
4) Cut the two packing belts
on the short side of the pallet,
and cut the side carton in the
vertical direction.
5) Cut off the short-side tape, lift
the cardboard up 90°, and pull
out the cardboard to expose the
modules.
6) Cut the two horizontal packing
belts inside the carton, and cut the
two packing belts near the pallet.
Take out the modules in turn and
carry the module by two people.
1 Drain hole
2 Grounding hole
3 Installation hole
4 Connector
5 Cable
6 Junction box
7 Nameplate
8 Frame
9 Glass
10 Encapsulate material
11 Solar cell
12 Backsheet
Mechanical drawing for monofacial modules
Mechanical drawing for bifacial modules

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6.1 INSTALLATION SAFETY
Trina Solar recommends that PV module installation should only be conducted by specialized
persons with experience in PV system installation. All installation work must be in full compliance
with the local regulations and the relevant international electrical standards.
The fire rating of Trina Solar modules complies with relevant standards or local laws and regulations.
Before installation, please carefully check the modules for abnormalities such as glass bursts, cell
cracks, backsheet scratches, deformation of installation holes, broken junction boxes or missing
covers, nameplates falling off or missing, and broken cables or connectors, etc. If any of such
situation is found, please contact Trina Solar customer service in time.
Before installation, please keep modules' electrical components clean and dry. Connectors can
corrode if they are in connected under wet conditions or with water inside the conductive parts. Any
corroded components shall not be used.
The cable length of junction box shall be selected according to the installation mode. When wiring,
the ties for fixing the cables coils shall be removed. The cable shall be fixed on the installation system
(frame or bracket, guide rail) with UV resistant cable ties, in cable conduits or wire cards to avoid
direct sunlight or immersion in water and mechanical damage of the cable; otherwise, it may cause
accelerated aging of the cable or even leakage and fire. Bifacial PV modules should also avoid
blocking the solar cells on the back of the module. The open area should minimize arc coil, which
can reduce the risk of induced lightning impact on PV module.
Do not install modules under rain, snow or windy conditions.
If installing or operate modules after rain or in the morning dew, appropriate
protective measures need to be taken to prevent water vapor from penetrating
into the connector.
Do not allow unauthorized persons to access the installation area.
When installing with scaffolding, make sure that the scaffolding is in a stable position or with anti-
dumping measures, and that the installer should wear a safety belt in accordance with local building
codes.
It is recommended not to stand on the bottom side of the inclined surface of the module during
installation, to prevent the module from slipping and causing casualty.
Please keep the PV module packed in the carton until installation and install them immediately after
unpacking.
Do not wear metallic jewelry which can cause electric shock during installation.
During installation and wiring of PV modules, please use opaque material to cover the PV module
surface completely.
Installation work must be carried out by at least two persons.
Do not stand on the module glass while working. There is a risk of injury or electric shock if the glass
is broken.
Do not loosen or unscrew the screws/clamps/rails of and around the PV module, which may lead to
a reduction of the module's load rating and even fall off.
Do not drop any tools or other objects on the module front- or backside which could cause damage
(visible or non-visible) to the module.
Do not install or use damaged modules. If the surface glass is damaged or worn, direct contact with
the surface of the module may cause electric shock.
Do not damage the backsheet or glass of modules when fastening the modules to the bracket with
bolts.

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Do not drill additional holes on any part of the module. Doing so will void the warranty.
The drain holes on the module frame must not be blocked in any situation during the installation and
operation.
Do not unplug the connector if the system circuit is connected to a load.
Modules with different colors should be avoided to install on the same rooftop or in the same array.
6.2 INSTALLATION METHOD
The PV modules must be installed in accordance with the installation instructions specified in this
user manual to comply with the IEC certification. Before installing, please read this section carefully
to familiarize yourself with the complete installation processes.
The modules and racking system can be connected through the mounting holes, clamps, or an
embedded system. Installation of modules must be carried out in accordance with the installation
requirements. If you wish to use a different installation method, please consult Trina Solar customer
service or technical support team. If in such case that an alternative mounting method is used but
not approved by Trina Solar, the module may get damaged and the warranty will be invalidated.
The mechanical loads described in this manual are the test loads. For calculating the equivalent
maximum design loads, a safety factor of 1.5 needs to be considered in compliance with the
requirements of the local laws and regulations. The design loads are strongly related to the
construction, applied standards, location and local climate conditions; therefore, have to be
determined by the racking suppliers and/or the professional engineers. For detailed information,
please follow local structural code or contact your professional structural engineer.
The modules shall be mounted on continuous rails that extend beneath the modules. If modules are
mounted without continuous rails, the maximum allowable load will be reduced, which needs to be
re-evaluated by Trina Solar.
The minimum distance between two modules is 5 mm (0.2 inch). If using special trackers, the
minimum distance should be selected according to the technical requirements of the tracker
suppliers.
6.2.1 SCREW INSTALLATION
The frame of each module has 4-φ9*14mm mounting holes, that are ideally placed to optimize the
loading capacity to secure the modules on the supporting structure.
To maximize mounting longevity, Trina Solar strongly recommends the use of corrosion proof
(stainless steel) fixings.
Secure the module in each fixing location with one M8 bolt, two flat washers, one spring washer and
one nut (see Figure 1) and tighten them to a torque of 16-20 N.m (140-180 lbf.in.). The yield strength
of bolt and nut should not be less than 450 MPa.
All parts in contact with the frame should use flat stainless-steel washers of a minimum of 1.5 mm
(0.06 inch) thickness with an outer diameter of 20-24 mm (0.79-0.94 inch), except for DE09 /
DE09.05 / DE09.08 / DEG19C.20 / NEG19C.20 / DE21 using an outer diameter of 16-18 mm (0.63-
0.71 inch).

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Figure 1. PV module installed with bolt fitting method.
The screw should be fixed at the following locationsfor different installation methods and mechanical
loads.
Module type
Mechanical loads
Module type
Mechanical loads
Mounting rails run parallel to the short side frame.
Distance between mounting holes is 1400 mm.
Distance between mounting holes is 1100 mm (for
DE09/DE09.05/DE09.08 only).
Mounting rails run parallel to the long side frame.
Distance between mounting holes is 1400 mm.
DE09
DE09.05
DE09.08
Uplift load ≤ 4000 Pa
Downforce load ≤ 6000 Pa
DEG18MC.20(II)
Uplift load ≤ 2400 Pa
Downforce load ≤ 5400 Pa
DE18M(II)
DEG18MC.20(II)
DE19
DEG19C.20
NEG19C.20
DE20
DEG20C.20
NEG20C.20
DE21
DEG21C.20
NEG21C.20
Uplift load ≤ 2400 Pa
Downforce load ≤ 5400 Pa
DEG19C.20
NEG19C.20
DEG20C.20
NEG20C.20
DEG21C.20
NEG21C.20
Uplift load ≤ 2400 Pa
Downforce load ≤ 3600 Pa
DE18M.08(II)
Uplift load ≤ 2400 Pa
Downforce load ≤ 6000 Pa

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6.2.2 CLAMP INSTALLATION
Trina Solar has tested its modules with a number of clamps from different manufacturers, it is
recommended to use fixing bolt of at least M8. The clamp shall not be malfunctioned due to
deformation or corrosion during the loading process. It is recommended to use a clamp with length
of ≥50 mm (1.97 inch) and thickness of ≥3 mm (0.12 inch).
The clamp must overlap the module frame by at least 7 mm (0.28 in) but not more than 10 mm (0.39
inch).
Modules clamps should not come into contact with the front glass and must not be deformed.
Please make sure to avoid shading effects from the module clamps.
The module frame shall not to be modified under any circumstances.
When choosing clamp installation method, use at least four clamps on each module, two clamps
should be attached on each long sides of the module (for portrait orientation). Depending on local
wind and snow loads, additional clamps may be required to ensure that modules can bear the extra
load.
Applied torque should refer to mechanical design standard according to the bolt customer is using,
for example: M8: 16-20 N.m (140-180 lbf.in)
The installation method of clamps is shown in Figure 2.
End clamp installation Middle clamp installation.
Figure 2. PV module installed with clamp fitting method.

Trina Solar User Manual | Vertex Series Modules
17
Clamp positions are of crucial importance for the reliability of the installation. The clamp centerlines
must only be positioned within the ranges indicated in table below, depending on the configurations
and loads.
Module type
Mechanical loads
Module type
Mechanical loads
Use 4 clamps on the long side.
Mounting rails run perpendicular to the long side frame.
Use 4 clamps on the long side.
Mounting rails run parallel to the long side frame.
DE09
DE09.05
DE09.08
A = (250 - 350) mm
Uplift load ≤ 4000 Pa
Downforce load ≤ 6000 Pa
DEG18MC.20(II)
A = (350 - 450) mm
Uplift load ≤ 2400 Pa
Downforce load ≤ 5400 Pa
DE18M(II)
DEG18MC.20(II)
A = (350 - 450) mm
Uplift load ≤ 2400 Pa
Downforce load ≤ 5400 Pa
DEG19C.20
NEG19C.20
A = (440 - 540) mm
Uplift load ≤ 2400 Pa
Downforce load ≤ 3600 Pa
DE18M.08(II)
A = (350 - 450) mm
Uplift load ≤ 2400 Pa
Downforce load ≤ 6000 Pa
DEG20C.20
NEG20C.20
A = (360 - 430) mm
Uplift load ≤ 2400 Pa
Downforce load ≤ 3600 Pa
DE19
DEG19C.20
NEG19C.20
DE21
DEG21C.20
NEG21C.20
A = (440 - 540) mm
Uplift load ≤ 2400 Pa
Downforce load ≤ 5400 Pa
DEG21C.20
NEG21C.20
A = (440 - 540) mm
Uplift load ≤ 2400 Pa
Downforce load ≤ 3600 Pa
DE20
DEG20C.20
NEG20C.20
A = (360 - 430) mm
Uplift load ≤ 2400 Pa
Downforce load ≤ 5400 Pa
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