DMEGC M10-60H User manual
www.dmegcsolar.com 2
Contents
1. General Information 3
1.1 Installation Manual Disclaimer 3
1.2 Limitation of Liability 3
2. Safety Precautions 3
3. Mechanical / Electrical Specifications 3
4. Unpacking and Storage 4
5. Module Installation 5
5.1 Module Wiring 6
5.2 Grounding 8
6. Mounting Instructions 8
6.1 Mounting Method: Bolting 9
6.2 Mounting Method: Clamping 9
6.3 Test Loads and Design Loads 10
7. Maintenance 14
8. Module Cleaning Guidelines 14
Annex 15
www.dmegcsolar.com 3
1. General Information
This general manual provides important safety information
relating to the installation, maintenance and handling of
standard solar modules of DMEGC Solar.
Professional installer must read these guidelines carefully and
strictly follow these instructions. Failure to follow these
instructions may result in death, injury or property damage. The
installation and handling of PV modules require professional
skills and should only be performed by qualified professionals.
The installers must inform end-users (consumers) the
aforesaid information accordingly. The word "module" or "PV
module" used in this manual refers to one or more standard
solar modules of DMEGC Solar.
This manual is only valid for the standard module types. Refer
to the product models in the annex.
Please retain this manual for future reference. We recommend
checking www.dmegcsolar.com regularly for the most updated
version.
1.1 Installation Manual Disclaimer
The information contained in this manual is subject to change
by DMEGC Solar without prior notice. DMEGC Solar gives no
warranty of any kind whatsoever, either explicitly or implicitly,
with respect to the information contained herein.
In the event of any inconsistency among different language
versions of this document, the English version shall prevail.
Please refer to our product lists and documents published on
our website at: www.dmegcsolar.com as these lists are
updated on a regular basis.
1.2 Limitation of Liability
DMEGC Solar shall not be held responsible for damages of any
kind, including –without limitation –bodily harm, injury or
damage to property, in connection with handling PV modules,
system installation, or non- compliance with the instructions
set forth in this manual.
2. Safety Precautions
Warning
Before attempting to install, wire, operate and/or service the
module and other electrical equipment, all instructions should
be read and understood. PV module connectors pass direct
current (DC) when exposed to sunlight or other light sources.
Contact with electrically active 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 have been
connected.
General Safety
•All modules must be installed by licensed electricians in
accordance to the applicable electrical codes such as,
the latest National Electrical Code or other national or
international applicable electrical codes.
•Protective clothing (non-slip gloves, clothes, etc.) must
be worn during installation to prevent direct contact with
30 V DC or greater, and to protect hands from sharp
edges.
•Prior to installation, remove all metallic jewelry to
prevent accidental exposure to live circuits.
•When installing modules in light rain, morning dew, take
appropriate measures to prevent water ingress into the
connector.
•Do not allow children or unauthorized persons near the
installation site or module storage area.
•Do not install modules in strong wind.
•Use electrically insulated tools to reduce the risk of
electric shock.
•If the disconnects and over current protection devices
cannot be opened or the inverter cannot be powered
down, cover the fronts of the modules in the PV array
with an opaque material to stop the production of
electricity when installing or working on a module or
wiring.
•Do not use or install damaged modules.
•Contact with module surfaces or frames may cause
electric shock if the front glass is broken or the
backsheet is torn.
•The PV module does not contain any serviceable parts.
Do not attempt to repair any part of the module.
•Keep the junction box cover closed at all times.
•Do not disassemble a module or remove any module part.
•Do not artificially concentrate sunlight on a module.
•Do not connect or disconnect modules when current
from the modules or an external source is present.
3. Mechanical / Electrical Specifications
Module electrical ratings are measured under Standard Test
Conditions (STC) of 1000 W/m2irradiance, with an AM1.5
spectrum, and a cell temperature of 25° C. Detailed electrical
and mechanical characteristics of DMEGC Solar crystalline
silicon PV modules can be found in module datasheets on
www.dmegcsolar.com. Main electrical characteristics at STC
are also stated on each module label. Please refer to the
datasheet or the product nameplate for the maximum system
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voltage.
Under certain conditions, a module may produce more current
or voltage than its Standard Test Conditions rated power. As a
result, the module short-circuit current under STC should be
multiplied by 1.25, and a correction factor should be applied to
the open-circuit voltage (
see Table 1 below
), when determining
component ratings and capacities. Depending on your local
regulations, an additional 1.25 multiplier for the short-circuit
current (giving a total multiplier of 1.56) may be applicable
when sizing conductors and fuses
.
Table 1: Low temperature correction factors for open-circuit voltage
Lowest Expected Ambient
Temperature (
°C
/
° F
)
Correction Factor
24 to 20 / 76 to 68
1.02
19 to 15 / 67 to 59
1.04
14 to 10 / 58 to 50
1.06
9 to 5 / 49 to 41
1.08
4 to 0 / 40 to 32
1.10
-1 to -5 / 31 to 23
1.12
-6 to -10 / 22 to 14
1.14
-11 to -15 / 13 to 5
1.16
-16 to -20 / 4 to -4
1.18
-21 to -25 / -5 to -13
1.20
-26 to -30 / -14 to -22
1.21
-31 to -35 / -23 to -31
1.23
-36 to -40 / -32 to -40
1.25
Alternatively, a more accurate correction factor for the open-
circuit voltage can be calculated using the following formula:
C
Voc
= 1 −
αVoc
× (25 – T)
T (° C) is the lowest expected ambient temperature at the
system installation site.
αVoc (%/° C) is the voltage temperature coefficient of the
selected module (refer to corresponding datasheet).
Electrical calculations and design must be performed by a
competent engineer or consultant.
Please contact DMEGC Solar’s technical support team for
additional information pertaining to engineering optimization
and approval of project specific module string lengths.
4. Unpacking and Storage
Precautions
•Modules should be stored in a dry and ventilated
environment to avoid direct sunlight and moisture. If
modules are stored in an uncontrolled environment, the
storage time should be less than 3 months and extra
precautions should be taken to prevent connectors from
being exposed to moisture or sunlight, like using
connector endcaps. In any circumstance, for pallets of
modules packaged in landscape orientation, stacking of
no more than two layers is allowed, for pallets of modules
packaged in portrait orientation, stacking is not allowed.
•When unloading modules pallets from flat truck, please
use a crane or a forklift to remove the module pallets.
When unloading modules pallets from containers, please
use a fork lift to remove the module pallets, and the
forklift should be close to the ground in order to avoid the
top of module pallets touching the top of the cabinet door.
Consult your DMEGC Solar's representative for more
detailed unloading instructions.
•Unpack module pallets carefully, following the steps
shown on the pallet. Unpack, transport and store the
modules with care.
•Modules must always be unpacked and installed by two
or three people. Always use both hands when handling
modules.
•Do not lift modules by their wires or junction box, lift them
by the frame.
•Do not allow the panels to sag or bow under their own
weight when being carried.
•Stacks of modules should contain no more than 12
modules, and the frames should be aligned.
•Do not place excessive loads on the module or twist the
module frame.
•Do not stand, step, walk and/or jump on modules under
any circumstances. Localized heavy loads may cause
severe micro-cracks at cell level, which in turn may
compromise module reliability and void DMEGC Solar’s
warranty.
•Do not leave the module backsheet directly in contact
with the support structure underneath when handling or
installing the module.
•Do not carry modules on your head.
•Do not drop or place objects (such as tools) on the
modules.
•Do not use sharp instruments on the modules. Particular
care should be taken to avoid module backsheets being
damaged by sharp objects, as scratches may directly
affect product safety.
•Do not leave modules unsupported or unsecured.
•Do not change the wiring of bypass diodes.
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•Keep all electrical contacts clean and dry at all times.
•Do not expose the modules and its electrical contacts to
any unauthorized chemical substance (e.g. oil, lubricant,
pesticide, etc.).
Product Identification
•Each module has two or three identical barcodes (one in
the laminate under the front glass, the second on the rear
side of the module and the third on the frame) that act as
a unique identifier.
•A nameplate is also affixed to the rear of each module.
This nameplate specifies the model type, as well as the
main electrical and safety characteristics of the module.
5. Module Installation
Precautionary Measures and General Safety
•Prior to installing modules please obtain information
about any requirements and necessary approvals for the
site, installation and inspection from the relevant
authorities.
•Check applicable building codes to ensure that the
construction or structure (roof, facade, support, etc.) can
bear the module system load.
•DMEGC Solar’s standard modules have been qualified for
Application Class A (equivalent to Safety Class II
requirements). Modules rated under this class should be
used in systems operating at voltage above 50V or power
above 240W, where general contact access is anticipated.
•DMEGC Solar’s standard modules have been certified as
Class C according to IEC 61730-2 for fire class
performance, please refer to the datasheet or the product
nameplate for the detailed types.
•Consult your local authority for guidelines and
requirements for building or structural fire safety. When
installing modules, ensure the assembly is mounted over
a fire-resistant roof covering rated for the application.
•The fire rating for this module is only valid when the
product is installed as specified in the mechanical
mounting instructions.
Environmental Conditions
•PV modules are intended for use in general open-air
climates, as defined in IEC 60721-2-1: Classification of
environmental conditions Part 2-1: Environmental
conditions appearing in nature−Temperature and
humidity.
•It is recommended that PV modules are installed in an
environmental temperature range of -40 ° C to + 85 ° C.
•Please consult the DMEGC Solar’s technical support
department for more information on the use of modules
in special climates, such as an altitude greater than
2000m.
•Do not install modules near open flames or flammable
materials.
•Do not immerse modules in water or constantly expose
modules to water (either fresh or salt, i.e. from fountains,
sea spray).
•Exposing modules to salt (i.e. marine environments) or
sulfur (i.e. sulfur sources, volcanoes) incurs the risk of
module corrosion.
•Do not expose modules and their connectors to any
unauthorized chemical substances (e.g. oil, lubricant,
pesticide, etc.), as modules may incur damages
。
DMEGC Solar’s Modules have passed the
IEC61701 salt-mist, but galvanic corrosion can occur
between the aluminum frame of the Modules and
mounting or grounding hardware if such hardware is
comprised of dissimilar metals. DMEGC Solar
recommends that when the module is installed in salt-
damaged areas such as the sea, the module should be
installed at a distance of more than 500m from the
coastline. The offshore installation needs to be confirmed
with DMEGC Solar and installed after approval.
Installation Requirements
•Ensure that the module meets the general technical
system requirements.
•Ensure that other systems components do not damage
the module mechanically or electrically.
•Modules can be wired in series to increase voltage or in
parallel to increase current. To connect modules in series,
connect the cables from the positive terminal of one
module to the negative terminal of the next module.
To connect in parallel, connect the cables from the
positive terminal of one module to the positive terminal
on the next module.
•The quantity of bypass diodes in the module’s junction
box provided may vary depending on the model series.
•Only connect the quantity of modules that corresponds to
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the voltage specifications of the inverters used in the
system. In addition, modules must not be connected
together to create a voltage higher than the maximum
permitted system voltage stated on the module
nameplate, even under the worst local temperature
conditions (see Table 1 for the correction coefficients
that apply to open-circuit voltage).
•A maximum of two strings can be connected in parallel
without using an over-current protection device (fuses,
etc.) incorporated in series within each string. Three or
more strings can be connected in parallel if an
appropriate and certified over-current protection device
is installed in series within each string. And it shall be
ensured in the PV system design that the reverse current
of any particular string is lower than the module
maximum fuse rating at any circumstances.
•Only modules with similar electrical parameters should be
connected in the same string to avoid or minimize
mismatch effects in arrays.
•To minimize risk in the event of an indirect lightning strike,
avoid forming loops with the wiring when designing the
system.
•The recommended maximum series fuse rating is stated
in the module datasheets.
•Modules should be safely fixed to bear all expected loads,
including wind and snow loads.
•A minimum clearance of 6.5 mm (0.25 in) between
modules is required to allow for thermal expansion of the
frames.
•The small drainage holes on the underside of the module
must not be blocked.
Optimum Orientation and Tilt
•To maximize the annual yield, please calculate the
optimum orientation and tilt for PV modules in that
specific installation site. The highest yields are achieved
when sunlight shines perpendicularly onto the PV
modules.
Avoid Shading
•Modules shall not be permanently shaded (including
partial shading, spot shading, even shading or uneven
shading) under any circumstance. Permanent shading
includes shading of the same cell, cell row, or module
portion for extended and repeated periods of time (e.g.
more than 200 daylight hours over the warrantied service
lifetime). Power dissipated in fully or partially shaded
cells will result in power loss, reduced yield and can cause
localized overheating, which in turn may negatively
impact the module service lifetime. Permanent shading
may cause accelerated ageing of the encapsulation
material and place thermal stress on the bypass diodes.
This would void the module’s warranty unless properly
mitigated through the use of Module Level Power
Electronic (MLPE) devices.
•Regular maintenance is required to keep modules clean.
Particular measures should be taken to avoid permanent
shading from dirt or debris (e.g., plants, bird droppings,
etc).
•Do not install modules directly behind any object (e.g.,
tree, antenna, etc) to prevent occurrence of permanent
shading.
•Even temporary partial shading will reduce the energy
yield. A module can be considered to be unshaded if its
entire surface is free from shading all year round,
including on the shortest day of the year.
Reliable Ventilation
•Sufficient clearance (at least 100 mm (3.94 in)) between
the module frame and the mounting surface is required to
allow cooling air to circulate around the back of the
module. This also allows condensation or moisture to
dissipate.
•According to IEC 61730, any other specific clearance
required for maintaining a system fire rating should
prevail. Detailed clearance requirements pertaining to
system fire ratings must be provided by your racking
supplier.
5.1 Module Wiring
Correct Wiring Scheme
•Cable management scheme should be reviewed and
approved by the EPC contractor; in particular required
cable lengths should be cross-checked considering the
specificities of the tracker structure like bearing house
gaps. If longer cable or additional jumper cables are
requested, please contact DMEGC Solar’s sales
representative in advance.
•Ensure that the wiring is correct before starting up the
system. If the measured open circuit voltage (Voc) and
short-circuit current (Isc) differ from the specifications,
this indicates that there is a wiring fault.
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•When modules have been installed but the system has not
been connected to the grid yet, each module string should
be kept under open-circuit conditions and proper actions
should be taken to avoid dust and moisture penetration
inside the connectors.
•In case where a cable connection method not included in
the below is used, please confirm the suitable cable
length with DMEGC Solar’s sales representative.
•For different DMEGC Solar’s module types, DMEGC Solar
offers optional cable lengths to match various system
configurations.
•Recommended system cable schemes are shown below:
1. Portrait two rows installation
Note: Adjacent two modules (up and down) need to be
rotated 180 degrees
2. Portrait one row installation
3. Landscape installation
Note: Adjacent two modules (left to right) need to be
rotated 180 degrees
4. Leapfrog
The maximum distance between two adjacent module
frames should be within 50 mm (1.96in) for the side with
mounting clamps, and 25 mm (0.98in) for the side without
mounting clamps, in order to meet the system cable
scheme.
Correct Connection Connectors
•Make sure that all connections are safe and properly
mated. The PV connector should not be subject to stress
from the exterior. Connectors should only be used to
connect the circuit. They should never be used to turn the
circuit on and off.
•Connectors are not waterproof when unmated. When
installing modules, connector should be connected to
each other as soon as possible or appropriate measures
(like using connector endcaps) should be taken to avoid
moisture and dust penetrating into the connector.
•Do not connect different connectors (manufacturer and
type) together.
•Do not clean or precondition the connectors using
lubricants or any unauthorized chemical substances
Use of Suitable Materials
•Only use dedicated solar cable and suitable connectors
(wiring should be sheathed in a sunlight-resistant conduit
or, if exposed, should itself be sunlight- resistant) that
meet local fire, building and electrical regulations. Please
ensure that all wiring is in perfect electrical and
mechanical condition.
•Installers may only use cables listed and labeled as or PV
wire, and the cable with a cross section area of at least 4
mm² (12 AWG), 90° C wet rated in other areas (i.e. IEC
62930 approved), with proper insulation which is able to
withstand the maximum possible system open-circuit
voltage.
•Only copper conductor material should be used. Select a
suitable conductor gauge to minimize voltage drop and
ensure that the conductor ampacity complies with local
regulations.
Cable and Connector Protection
•Secure the cables to the mounting system using UV-
resistant cable ties. Protect exposed cables from damage
by taking appropriate precautions (e.g. placing them
inside a metallic raceway like EMT conduit). Avoid
exposure to direct sunlight.
•A minimum bending radius of 60 mm (2.36 in) is required
when securing the junction box cables to the racking
system.
•Protect exposed connectors from weathering damage by
taking appropriate precautions. Avoid exposure to direct
sunlight.
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•Do not place connectors in locations where water could
easily accumulate.
5.2 Grounding
•Although the modules are certified to Safety Class II, we
recommend them to be grounded and that module
installation should comply with all applicable local
electrical codes and regulations. Minimum size of
equipment grounding conductors for ground raceway and
equipment should be considered. Grounding connections
should be installed by a qualified electrician. Connect
module frames together using adequate grounding cables:
the use of 4-14 mm² (AWG 6-12) copper wire is
recommended. Holes provided for this purpose are
identified with a grounding symbol (IEC 61730-1).
All conductive connection junctions must be firmly fixed.
•Do not drill any extra ground holes for convenience as this
will void the modules warranty.
•All bolts, nuts, flat washers, lock washers and other
relevant hardware should be made of stainless steel,
unless otherwise specified.
•DMEGC Solar does not provide grounding hardware.
•The grounding method described below is commended
by DMEGC Solar.
Grounding by grounding bolt
•Use M8 bolt and washers to bond the ground wire and
aluminum frame through the grounding holes (as shown
figure 1
). The tightening torque is 3-7N.m. All nuts and
washers should be made of stainless steel.
figure 1
Grounding by using grounding clamp
figure 2
•As shown in the
figure2
, the grounding clip assembly
consists of a slider, base, and self–captivating thread–
cutting screw or 8–32 screw and hex nut. The grounding
clip accepts solid uninsulated copper wire sizes 10 or 12
AWG.
Addition Third-party Grounding Devices
•DMEGC Solar’s Modules can be grounded using third
party grounding devices so long as they are certified for
grounding modules and the devices are installed
according to the manufacturer’s specified instructions.
6. Mounting Instructions
The applicable regulations pertaining to work safety, accident
prevention and securing the construction site must be
observed. Workers and third party personnel shall wear or
install fall arrest equipment. Any third party need to be
protected against injuries and damages.
•The mounting design must be certified by a registered
professional engineer. The mounting design and
procedures must comply with all applicable local codes
and requirements from all relevant authorities.
•The module is considered to be in compliance with IEC
61730 and IEC 61215 only when the module is mounted
in the manner specified by the mounting instructions
included in this installation manual.
•The system designer and installer are responsible for load
calculations and for proper design of support structure.
•Any module without a frame (laminate) shall not be
considered to comply with the requirements of IEC 61730
unless the module is mounted with hardware that has
been tested and evaluated with the module under this
standard or by a field Inspection certifying that the
installed module complies with the requirements of IEC
61730.
•DMEGC Solar does not provide mounting hardware.
•Standard modules can be mounted onto a support
structure using one of several approved methods as
described below. For information about other installation
methods, please contact your local representative.
Failure to use a recognized installation method will void
the DMEGC Solar’s warranty.
•Use appropriate corrosion-proof fastening materials. All
mounting hardware (bolts, spring washers, flat washers,
nuts) should be hot dip galvanized or stainless steel.
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•Use a torque wrench for installation.
•Do not drill additional holes or modify the module frame.
Doing so will void the warranty.
•Standard modules can be installed in either landscape or
portrait orientations. Refer to the detailed instructions for
further guidance. Please note that in areas with heavy
snowfall (> 2400 Pa) further countermeasures such the
use of additional support bars should be considered to
avoid snow loads damaging the lowest row of modules.
•The loads described in this manual correspond to test
loads. For installations complying with IEC 61215 and IEC
61730, a safety factor of 1.5 should be applied for
calculating the equivalent maximum authorized design
loads. Project design loads depend on construction,
applicable standards, location and local climate.
Determination of the design loads is the responsibility of
the racking suppliers and/or professional engineers. For
detailed information, please follow local structural code
or contact your professional structural engineer.
6.1 Mounting Method: Bolting
•The mechanical load test with these mounting methods
were performed according to IEC 61215.
•Modules should be bolted to supporting structures
through the mounting holes in the rear frame flanges only.
•In areas with heavy wind loads, additional mounting
points should be used. The system designer and the
installer are responsible for correctly calculating the
loads and ensuring that the supporting structure meets
all the applicable requirements.
•Each module must be securely fastened at a minimum of
4 points on two opposite sides.
•Tightening torques should be 15~20 N•m for M8 coarse
thread bolts, depending on bolt class.
•The method and the specifications of the fixing parts are
shown in the
figure 3
below:
figure 3
6.2 Mounting Method: Clamping
•The mechanical load test with these mounting methods
were performed according to IEC 61215.
•Top or bottom clamping methods will vary and are
dependent on the mounting structures. Please follow the
mounting guidelines recommended by the mounting
system supplier.
•Each module must be securely fastened at a minimum of
four points on two opposite sides. The clamps should be
positioned symmetrically. The clamps should be
positioned according to the authorized position ranges.
•Install and tighten the module clamps to the mounting
rails using the torque stated by the mounting hardware
manufacturer. M8 bolt and nut are used for this clamping
method.
•Tightening torques should be within 18~24 N•m for M8
coarse thread bolts, depending on the bolt class. For the
bolt grade, the technical guideline from the fastener
suppliers should be followed. Different recommendations
from specific clamping hardware suppliers should prevail.
•The system designer and installer are responsible for load
calculations and for proper design of support structure.
•DMEGC Solar’s warranty may be void in cases where
improper clamps or unsuitable installation methods are
found. When installing inter-modules or end-type clamps,
please take the following measures into account:
1. Do not bend the module frame.
2. Do not touch or cast shadows on the front glass.
3. Do not damage the surface of the frame (to the
exception of the clamps with bonding pins).
4. Ensure the clamps overlap the module frame by at
least 7mm but no more than 12mm.
5. Overlap in length by at least 50mm.
6. Ensure the clamp thickness is at least 3 mm.
•Clamp material should be anodized aluminum alloy or
stainless steel. The mounting details are shown in the
following
figures4
and
figures5
.
Bolt
Flat Washer
Material: stainless steel
size: M8*20mm
Material: stainless steel
size: M8
thickness: ≥1.6mm
Spring Washer
Nut
Material: stainless steel
size: M8
thickness: ≥2.0mm
Material: stainless steel
size: M8
www.dmegcsolar.com 10
figure4 figure 5
6.3 Test Loads and Design Loads
•The Standard/lower loading capacity applies to normal
environment: the modules are tested under a maximum
positive pressure of 2400 Pa, and negative pressure of
1600 Pa, the modules are designed to meet a maximum
positive pressure of 1600Pa, and negative pressure of
1067 Pa, this design load was then tested with a safety
factor of 1.5 times.
•The high loading capacity applies to severe environment,
like storm, big snow, etc. The modules are tested under a
maximum positive pressure of 5400 Pa, and negative
pressure of 2400 Pa, the modules are designed to meet a
maximum positive pressure of 3600 Pa, and negative
pressure of 1600 Pa, this design load was then tested with
a safety factor of 1.5 times.
•For bifacial double-glass modules, it is recommended
that the beam is installed parallel to the long frame to
reduce backside shielding.
M10-60H / 66H / 72H / 78H & M10-B/G-60H / 66H / 72H / 78H
Installation method
4 bolts at the long frame (60H inner holes)
4 bolts at the long frame (66H/72H/78H outer holes)
Bolt installation
Loading capacity
Test load: positive 3600Pa, negative 2400Pa
Design load: positive 2400Pa, negative 1600Pa
Test load: positive 3600Pa, negative 2400Pa
Design load: positive 2400Pa, negative 1600Pa
Installation method
4 clamps at the long frame
6 clamps at the long frame
Clamp installation
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Clamp position
(1/5L-50)<S<(1/5L+50)
(1/2L-80)<S<(1/2L-30);(1/6L-50)<H<(1/6L+50)
Loading capacity
Test load: positive 5400Pa, negative 2400Pa
Design load: positive 3600Pa, negative 1600Pa
Test load: positive 5400Pa, negative3 600Pa
Design load: positive 3600Pa, negative 2400Pa
M10-54H & M10-B/G-54H
Installation method
4 bolts at the long frame
Installation method
4 clamps at the short frame
Bolt installation
Clamp installation
Clamp position
0<H<1/4W
Loading capacity
Test load: positive 5400Pa, negative 2400Pa
Design load: positive 3600Pa, negative 1600Pa
Loading capacity
Test load: positive 2400Pa, negative 1600Pa
Design load: positive 1600Pa, negative 1067Pa
Installation method
4 clamps at the long frame
6 clamps at the long frame
Clamp installation
Clamp position
(1/5L-50)<S<(1/5L+50)
(1/2L-80)<S<(1/2L-30);(1/6L-50)<H<(1/6L+50)
Loading capacity
Test load: positive 5400Pa, negative 2400Pa
Design load: positive 3600Pa, negative 1600Pa
Test load: positive 5400Pa, negative 3600Pa
Design load: positive 3600Pa, negative 2400Pa
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M2、P1、G1、M6-66H/72/72H & M2、P1、G1、M6-B/G-66H/72/72H
Installation method
4 bolts at the long frame (inner holes)
8 bolts at the long frame
Bolt installation
Loading capacity
Test load: positive 3600Pa, negative 2400Pa
Design load: positive 2400Pa, negative1600Pa
Test load: positive 5400Pa, negative 3600Pa
Design load: positive 3600Pa, negative 2400Pa
Installation method
4 clamps at the long frame
6 clamps at the long frame
Clamp installation
Clamp position
(1/4L-50)<S<(1/4L+50)
(1/2L-80)< S <(1/2L-30);(1/6L-50)< H <(1/6L+50)
Loading capacity
Test load: positive 5400Pa, negative 2400Pa
Design load: positive 3600Pa, negative1600Pa
Test load: positive 5400Pa, negative 3600Pa
Design load: positive 3600Pa, negative 2400Pa
Installation method
4 clamps at the short frame
Short side in-rail installation +long side reinforce with clamps
Clamp installation
Clamp position
0<H<1/4W
(1/2L-80)< S <(1/2L-30)
Loading capacity
Test load: positive 1600Pa, negative 1600Pa
Design load: positive 1067Pa, negative 1067Pa
Test load: positive 5400Pa, negative 2400Pa
Design load: positive 3600Pa, negative 1600Pa
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Installation method
Long side in-rail installation
Short side in-rail installation
In-rail installation
Loading capacity
Test load: positive 5400Pa, negative 2400Pa
Design load: positive 3600Pa, negative 1600Pa
Test load: positive 1600Pa, negative 1600Pa
Design load: positive 1067Pa, negative 1067Pa
M2、P1、G1、M6---60/60H & M2、P1、G1、M6-B/G-60/60H
Installation method
4 bolts at the long frame (inner holes)
8 bolts at the long frame
Bolt
installation
Loading capacity
Test load: positive 5400Pa, negative 2400Pa
Design load: positive 3600Pa, negative 1600Pa
Test load: positive 5400Pa, negative 3600Pa
Design load: positive 3600Pa, negative 2400Pa
Installation method
4 clamps at the long frame
6 clamps at the long frame
Clamp installation
Clamp position
(1/4L-50)<S<(1/4L+50)
(1/2L-80)<S<(1/2L-30); (1/6L-50)<H<(1/6L+50)
Loading capacity
Test load: positive 5400Pa, negative 2400Pa
Design load: positive 3600Pa, negative 1600Pa
Test load: positive 5400Pa, negative 3600Pa
Design load: positive 3600Pa, negative 2400Pa
DMEGC Solar PV Modules Installation Manual
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Installation method
4 clamps at shorter frames
Short side in-rail installation + long side reinforce with clamps
Clamp installation
Clamp position
0<H<1/4W
(1/2L-80)<S<(1/2L-30)
Loading capacity
Test load: positive 2400Pa, negative 1600Pa
Design load: positive 1600Pa, negative 1067Pa
Test load: positive 5400Pa, negative 2400Pa
Design load: positive 3600Pa, negative 1600Pa
Installation method
Long side in-rail installation
Short side in-rail installation
In-rail installation
Loading capacity
Test load: positive 5400Pa, negative 2400Pa
Design load: positive 3600Pa, negative 1600Pa
Test load: positive 2400Pa, negative 1600Pa
Design load: positive 1600Pa, negative 1067Pa
7. Maintenance
•Do not make modifications to any component of the PV
module (diode, junction box, connectors or others).
•Regular maintenance is required to keep modules clear of
snow, bird droppings, seeds, pollen, leaves, branches, dirt
spots, and dust.
•Modules with sufficient tilt (at least 15° ), generally may
not require cleaning (rain will have a self-cleaning effect).
If the module has become soiled, wash with water and a
non-abrasive cleaning implement (sponge) during the
cool part of the day. Do not scrape or rub dry dirt away, as
this may cause micro scratches.
•Snow should be removed using a soft brush.
•Periodically inspect the system to check the integrity of
all wiring and supports.
•To protect against electric shock or injury, electrical or
mechanical inspections and maintenance should be
performed by qualified personnel only.
8. Module Cleaning Guidelines
•This manual covers the requirements for the cleaning
procedure of PV modules of DMEGC Solar. The purpose of
these cleaning guidelines is to provide general
information for cleaning DMEGC Solar’s modules. System
users and professional installers should read these
guidelines carefully and strictly follow these instructions.
•Failure to follow these instructions may result in death,
injury or damage to the photovoltaic modules. Damages
induced by inappropriate cleaning procedures will void
DMEGC Solar’s warranty.
Safety Warning
•Cleaning activities create risk of damaging the modules
and array components, as well as increasing the potential
electric shock hazard.
•Cracked or broken modules represent an electric shock
hazard due to leakage currents, and the risk of shock is
increased when modules are wet. Before cleaning,
thoroughly inspect modules for cracks, damage, and
loose connections.
•The voltage and current present in an array during
daylight hours are sufficient to cause a lethal electrical
shock.
•Ensure that the circuit is disconnected before starting the
cleaning procedure as contact with leakage of electrically
active parts can result in injury.
•Ensure that the array has been disconnected to other
DMEGC Solar PV Modules Installation Manual
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active components (such as inverter or combiner boxes)
before starting with the cleaning.
•Wear suitable protection (clothes, insulated gloves, etc.).
•Do not immerse the module, partially or totally, in water
or any other cleaning solution.
•Rear side cleaning of the modules is not required. If
cleaning the rear of a module is desired, care should be
taken to ensure there is no damage caused to the
backsheet by simply clearing the contaminant by hand or
with a soft sponge.
Handing Notice
•Use a proper cleaning solution and suitable cleaning
equipment.
•Do not use abrasive or electric cleaners on the module.
•Particular attention should be taken to avoid the module
backsheet or frame to come in contact with sharp objects,
as scratches may directly affect product safety.
•Do not use abrasive cleaners, de-greasers or any
unauthorized chemical substance (e.g. oil, lubricant,
pesticide, etc.) on the module.
•Do not use cleaning corrosive solutions containing
hydrofluoric acid, alkali, acetone, or industrial alcohol.
Only substances explicitly approved by DMEGC Solar are
allowed to be used for cleaning modules.
•For cleaning methods using rotating brush, please
consult with DMEGC Solar's technical support before
using.
•Dirt must never be scraped or rubbed away when dry, as
this will cause micro-scratches on the glass surface.
OPERATION PREPARATION
•Noticeable dirt must be rubbed away by gentle cleaning
implement (soft cloth, sponge or brush with soft bristles).
•Ensure that brushes or agitating tools are not abrasive to
glass, EPDM, silicone, aluminum, or steel.
•Conduct the cleaning activities avoiding the hottest hours
of the day, in order to avoid thermal stress on the module.
CLEANING METHODS
Method A: Compressed Air
DMEGC Solar recommends cleaning the soft dirt (like dust)
on modules just with air pressure. This technique can be
applied as long as the method is efficient enough
considering the existing conditions.
Method B: Wet cleaning
•If excessive soiling is present on the module surface, a
non-conductive brush, sponge, or other mild agitating
method may be used with caution.
•Ensure that any brushes or agitating tools are
constructed with non-conductive materials to
minimize risk of electric shock and that they are not
abrasive to the glass or the aluminum frame.
•If grease is present, an environmental-friendly cleaning
agent may be used with caution.
•DMEGC Solar recommends the following to be used:
1. Water with low mineral content
2. Near neutral pH water
3. The maximum water pressure recommended is 4
MPa (40 bar)
Annex
Glass/Foil Modules
Double Glass Modules
DMXXXM10-54HSW/HBW/HBB
DMXXXM10-G/B54HSW/HBW/HBB/HBT/HST
DMXXXM10-60HSW/HBW/HBB
DMXXXM10-G/B66HSW/HBW/HBB/HBT/HST
DMXXXM10-66HSW/HBW/HBB
DMXXXM10-G/B72HSW/HBW/HBB/HBT/HST
DMXXXM10-72HSW/HBW/HBB
DMXXXM10-G/B78HSW/HBW/HBB/HBT/HST
DMXXXM10-78HSW/HBW
DMXXXM6-G/B60HSW//HBW/HBB/HBT/HST
DMXXXM6-60HSW/HBW/HBB
DMXXXM6-G/B72HSW/HBW/HBB/HBT/HST
DMXXXM6-72HSW/HBW/HBB
DMXXXG1-G/B60HSW/HBW/HBB/HBT/HST
DMXXXG1-60HSW/HBW/HBB
DMXXXG1-G/B72HSW/HBW/HBB/HBT/HST
DMXXXG1-72HSW/HBW/HBB
DMXXXG1-G/B60SW/BW/BB/BT/ST
DMXXXG1-60SW/BW/BB
DMXXXG1-G/B72SW/BW/BB/BT/ST
DMXXXG1-72SW/BW/BB
DMXXXM2-G/B60HSW/HBW/HBB/HBT/HST
DMXXXM2-60HSW/HBW/HBB
DMXXXM2-G/B72HSW/HBW/HBB/HBT/HST
DMXXXM2-72HSW/HBW/HBB
DMXXXM2-G/B60SW/BW/BB/BT
This manual suits for next models
29
Table of contents
