Maysun Solar MS M-72 Series User manual
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Table of Content
1. Scope ................................................................................................................... - 3 -
2. The Introduction of Installation Manual ............................................................................. - 3 -
3. Safety Precautions............................................................................................ - 3 -
4. Product Information........................................................................................... - 5 -
4 . 1 Unpacking and storage ............................................................................................................ - 5 -
4.2 Module tag information .................................................................................................................... -6-
4.3 Module electrical performance parameters .................................................................................... -6-
5. Environmental Considerations........................................................................... - 6 -
5. 1 Climate conditions............................................................................................................................-6-
5.2 Working environment....................................................................................................................-6-
6. Site Selection ....................................................................................................... - 7 -
7. Mounting Instructions ...................................................................................... - 7 -
7. 1 Mounting methods .......................................................................................................................... - 7-
A. Mounting with Bolts .................................................................................................... - 7 -
B. Mounting with Clamps ................................................................................................ - 9 -
C. Mounting with Single-axis Tracking System ................................................................... - 10-
7.2 Grounding .................................................................................................................................. - 10 -
7.3 Module wiring ............................................................................................................................. - 13 -
8. Electrical Configuration................................................................................... - 14 -
8. 1 Fusing ........................................................................................................................................... - 14 -
8.2 Inverter seletion and compatibility ............................................................................................. - 14 -
9. Maintenance And Care ..................................................................................... - 15 -
10. Disclaimer Of Liability .................................................................................. - 16 -
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1. Scope
This installation manual specifies the installation and maintenance requirements for crystalline silicon PV
modules ( hereinafter referred to as " monofacial modules" ) manufactured by Maysun Solar Corporation ( hereinafter
referred to as "Maysun").
This installation manual is intended for the installation and maintenance of monofacial modules ( hereinafter
referred to as " monofacial modules" ) , and helps customers to correctly install the photovoltaic power generation
system, so that the design system can realize its potential. This installation manual does not apply to the installation
of the Maysun double glass bifacial modules and shingled modules.
2. The Introduction Of Installation Manual
Thanks for choosing the crystalline silicon PV module of Maysun Solar. This manual contains important
electrical and mechanical installation information. For correct installation and stable power output, please install and
maintain the modules Carefully read and understand all installation instructions in the manual, and Keep this manual
in a safe place for future reference (care and maintenance) and in case of sale or disposal of the modules.
This manual does not constitute a warranty, expressed or implied. Maysun does not assume responsibility and
expressly disclaims liability for loss, damage, or expense arising out of or in anyway connected with installation,
operation, use or maintenance of modules.
The PV modules should be installed in accordance with all safety precautions and local laws and regulations
of this manual and should be installed and serviced by qualified personnel with knowledge of the mechanical and
electrical requirements of the system.
The mechanical and electrical installation of the PV modules shall be made in accordance with applicable laws
and regulations, including electrical, construction and electrical connection requirements. These regulations vary
depending on the installation site, such as building roofs, surface mounts, in- vehicle applications, and soon.The
requirements may vary depending on the installation system voltage, the use of DC or AC. Please refer to the
relevant local laws and regulations.
Any questions, please contact with the salesman or customer service personnel of Maysun Solar for further
explanations.
3. Safety Precautions
Potentially lethal DC voltages can be generated whenever PV Modules are exposed to a light source,
therefore, avoid contact with electrically active parts and be sure to isolate live circuits before attempting to make
or break any connections.
When working on electrical connections, remove all metallic jewellery, use properly insulated tools
and wear appropriate personal protective equipment to reduce the risk of electric shock.
DO NOT stand or step on, damage or scratch the front or back side surfaces of the module .
Broken modules cannot be repaired and contact with any module surface or frame can lead to electrical
shock.
DO NOT use a module with broken glass or torn substrate.
DO NOT disassemble the modules or remove any part of the module .
Protect the electrical plug contacts against corrosion and soiling. Make sure that all connectors are
corrosion free and clean before making the connection .
DO NOT install or handle modules when they are wet or during periods of high wind .
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Ensure that all connections are securely made with no gap between the contacts. Any gap can
result in electrical arcing that can cause a fire hazard and/ or an electric shock.
Make sure that the polarity of each module or a string is not reversed considering the rest ofthe
modules or strings.
DO NOT artificially concentrate sunlight on these solar modules .
DO NOT use water to extinguish fires of an electrical origin .
DO NOT walk on the modules .
DO NOT disconnect the modules under load to avoid arcs and electrical shocks. If needed cover the
module surface with an opaque cover.
Any module or panel mounting system has limitations on specific inclination required to maintain a specific
System Fire Class Rating.
Where common grounding hardware ( nuts, bolts, star washers, spilt- ring lock washers, flat washers and the
like) is used to attach a listed grounding/ bonding device, the attachment must be made in conformance with the
grounding device manufacturer' s instructions.
Common hardware items such as nuts, bolts, star washers, lock washers and the like have not been evaluated for
electrical conductivity or for use as grounding devices and should be used only for maintaining mechanical connections
and holding electrical grounding devices in the proper position for electrical conductivity. Such devices, which were
supplied with the module and evaluated through the requirements in IEC61730 61215, may be used for grounding
connections in accordance with the instructions provided with the module.
Rated electrical characteristics are within ± 10 percent ofmeasured values at Standard Test Conditions of 10 0 0
W/m², 25 °C cell temperature and AM 1.5 solar spectral irradiance.
The fire rating of Maysun Solar PV module is valid only when mounted in the manner specified
in the mechanical mounting instructions ofthis installation manual.
The module is considered to be in compliance with IEC61730 61215 only when the module is mounted in the
manner specified by the mounting instructions below.
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Module model
Specific construction
Marking
MSXXXM-72
MSXXXP-72
MSXXXMB-7 2 H
Please check the related IEC description files when
checking the fire protection rank of the BOM
concerned
Module Fire Performance:
Type 1/ Type 2
MSXXXM-60
MSXXXP-60
MSXXXMB-6 0 H
Please check the related IEC description files when
checking the fire protection rank of the BOM
concerned
Module Fire Performance:
Type 1/ Type 2
MSXXXM- 36
MSXXXP-36
Please check the related IEC description
files when checking the fire protection rank
of the BOM concerned
Module Fire Performance:
Type 1/ Type 2
MSXXXMB-6 6 H
MSXXXMB-5 7 H
Please check the related IEC description files when
checking the fire protection rank of the BOM
concerned
Module Fire Performance:
Type 1/ Type 2
MSXXXMB-5 5H
MSXXXMB-5 4 H
Please check the related IEC description files when
checking the fire protection rank of the BOM
concerned
Module Fire Performance:
Type 1/ Type 2
MSXXXMB-5 0 H
MSXXXMB-4 0H
Please check the related IEC description files when
checking the fire protection rank of the BOM
concerned
Module Fire Performance:
Type 1/ Type 2
All series in this
description
All construction in this description
Fire resistance rating: Class C
The Type 1 and/or Type 2 modules with the specified constructions in the table below, when installed
with an IEC listed mounting system that has been rated as a Class A System, is suitable to maintain the
System Class A Fire Rating.
The fire rating of the module is valid only when mounted in the manner specified in the mechanical
mounting instructions .
4. Product Information
4.1 Unpacking and storage
At time of receipt, verify that the product delivered is in fact the product ordered. Carefully check the product
name and subname. Leave the product in its original packing box until you are ready to install.
Store packing boxes in a clean, dry area with relative humidity below 85% and ambient temperatures between -
20°C and 50°C.
Do NOT stack more than the maximum amount of allowable pallets on top of each other.
At the installation site, take care to keep modules and particular their electrical contacts clean and dry
before installation. If connector cables are left in damp conditions then the contacts may corrode. Any module
with corroded contacts should not be used.
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If pallets are stored temporarily outside then place a protective covering over the pallet to protect it from
direct weathering and do not stack more than 1 pallet high.
Two people are required to unpack the modules from the packing box, when handling modules always use
both hands.
Protect the module edges for temporary storage outside the pallet .
DO NOT use a knife to cut the zip- ties, but use wire cutting pliers.
DO NOT place modules directly on top of each other, and serial number of each laminate are clearly marked on
the outside of each packing box.
4.2 Module tag information
Each PV module is affixed with two kinds of labels, providing the following information:
Label: Describes the product name, PV module model, nominal power, rated voltage, rated current, open circuit
voltage, short circuit current, maximum system voltage, PV module size and weight under standard test conditions.
Series number: Each module has a unique bar code number, each bar code number has 20 letters and numbers.
The bar code is permanently encapsulated inside the module, as can be seen clearly from the top right corner of the
module. The bar code number allows you to trace information about the module production process.
4 . 3 Module electrical performance parameters
The electrical performance parameters of the module were measured under standard test conditions( irradiance of
1 0 00 W/m², AM1.5 spectra,ambient temperature of 25°C) with a test uncertainty of±3%. The maximum system
module voltage is 1 5 0 0 V. Refer to the following table for electrical performance parameters.
5. Environmental Considerations
5.1 Climate conditions
Maysun Solar Crystalline series modules may be installed in the following conditions for more than 20 years.
In addition to the required IEC certification, Maysun Solar products have also been tested to verify resistance to
ammonia fumes that may be present around barns sheltering cattle, as well as suitability for installation in humid
( coastal) areas and areas ofhigh sand storms.
5. 2 Working environment
Maysun Solar’ s PV module should operate in the following environmental conditions:
5.2. 1 Ambient temperature: -20℃ to+45℃
5.2.2 Operating temperature of the module: -40℃ to +85℃
5.2.3 Humidity:85%RH
5 . 2 . 4 Mechanical load bearing capacity: the modules have passed the mechanical load test of wind pressure of
2 4 0 0 Pa and snow pressure of 5 4 0 0 Pa; at the same time, they have passed the mechanical load test of wind pressure of
3600Pa and snow pressure of 3600 Pa. (Only limited to the PV module models mentioned in this manual).
Note: The module mechanical load is based on the installation method and installation site, in the calculation of
mechanical load by the professional installer according to the system design requirements to calculate.
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6. Site Selection
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Maysun Solar Modules can be mounted in landscape or portrait orientation however the impact of dirt
shading the solar cells can be minimized by orienting the product in landscape.
Solar module is recommended to be installed at an optimized tilt angle to maximize the energy output.
It is roughly equal to the latitude of the project site as a rule of thumb, facing to equator. But always to design
based on local situations to find out the optimum one.
When installing solar modules on a roof always leave a safe working area between the edge ofthe roof
and the external edge ofthe solar array.
In case ofresidential installations on the ground, modules shall be installed following local regulations,
e.g. using fence.
Position the modules to minimize the chances of shading at any time of the day.
Do not install PV modules in a location where they will be immersed in water or continually exposed to
water from a sprinkler or fountain, etc.
Avoid using a mounting method that will block the drainage holes in the module frame .
When all solar modules ( except for smart module) are mounted in the same plane and orientation then all
can be expected to have similar performance throughout the day and can be connected together to the same
inverter channel.
If solar modules ( except for smart module) on the same installation are mounted at different angles or
orientations then energy production can normally be optimized by connecting the different orientations to
different inverters (or different MPPT if the inverter has more than one MPPT). Refer to inverter
manufacturers for further guidelines.
According to Intertek-conducted IEC 61701:2011, salt mist corrosion testing of photovoltaic (PV),
Maysun Solar modules can be safely installed in corrosive salt areas within proximity ofthe ocean or
sulfurous areas.
7. Mounting Instructions
7.1 Mounting methods
PV modules can be mounted to the substructure using either corrosion- proofM8 bolts placed
through the mounting holes on the rear ofthe module or specially designed module clamps.
Regardless of the fixing method the final installation of the modules must ensure that: The minimum distance
between two modules is 10mm(0.4in).
The mounting method does not block the module drainage holes.
Panels are not subjected to wind or snow loads exceeding the maximum permissible loads, and are not
subject to excessive forces due to the thermal expansion ofthe support structures.
Note: The drain holes cannot be blocked in any situation during installation or use.
A. Mounting with Bolts
The frame of each module has 4 - φ 9 * 1 2 mm mounting holes, ideally placed to optimize
the load handling capability, to secure the modules to supporting structure.
To maximize mounting longevity, Maysun Solar strongly recommends the use of corrosion proof
( stainless steel) fixings
Secure the module in each fixing location with an M8 bolt and a flat washer, spring washer and nut as shown
in Figure 1 and tighten to a torque of 16~20 N.m( 140- 180lbf.in.).
All parts in contact with the frame should use flat stainless steel washers ofminimum o f 1.8mm thickness with
an outer diameter of 20-24mm(0.79-0.94in).
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B. Mounting with Clamps
Maysun Solar has tested its modules with a number of clamps from different manufacturers and recommends the use of
clamps that have an EPDM or similar insulating washer, fixing bolt ofat least M6.
The clamp must overlap the module frame by at least 7mm(0.28 in) but no more than
10mm(0.39in). Use at minimum 4 clamps to fix modules on the mounting rails.
Modules clamps should not come into contact with the front glass and must not deform the frame.
Be sure to avoid shadowing effects from the module clamps.
The module frame is not to be modified under any circumstances.
When choosing this type of clamp- mounting method, use at least four clamps on each module, two clamps should
be attached on each long side ofthe module ( for portrait orientation) or each short sides ofthe module ( for landscape
orientation) . Depending on local wind and snow loads, additional clamps may be required to ensure that modules can
bear the load.
End Clamp installation Middle Clamp installation
±2400Pa Load +5400Pa/-2400Pa Load
Mounting rail
4- φ9*12 installation hole
Figure 2. PV module installed with clamp fitting method
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C. Mounting with Single-axis Tracking System:
This installation is only for 7 2 cells polycrystalline modules.
It is a Single- axis Tracking System, the module is fixed on the axis by bolting long frame.
The frame of each module has 4- φ7*10mm(0.28*0.39in) mounting holes with specific location shown in
Figure 3.
Secure the module in each fixing location with an M6 bolt, two flat washers, a spring washer and nut
All parts in contact with the frame should use flat stainless steel washers ofminimum 1.5 mm thickness with an
outer diameter of 16-20mm(0.63-0.79in.).
The bolt should be made of stainless steel or other anti- corrosion material.
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778m m
(30.6in)
Φ7*10 mm(0.28*0.39 n)
INSTALLING HOLES
1 956mm
(77.0in)
Figure 3 . PV module installed with Single- axis Tracing System
1 ) M6 Stainless Bolt
3)Spring Stainless Washer
7.2 Grounding
2) Flat Stainless Washer
4)HEX Stainless Nut
All module frames and mounting racks must be properly grounded in accordance with the appropriate
respective National Electrical Code.
Proper grounding is achieved by bonding the module frame( s) and all metallic structural members
together continuously using a suitable grounding conductor. The grounding conductor or strap may be copper,
copper alloy, or any other material acceptable for use as an electrical conductor per respective National
Electrical Codes. The grounding conductor must then make a connection to the earth using a suitable earth ground
electrode.
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2
3
1
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Maysun Solar modules can be installed with the use ofthird party listed grounding devices for grounding the
metallic frames of PV modules. The devices have to be installed in accordance with the grounding device
manufacturer’ s specified instructions.
Maysun Solar modules can be installed with the use ofthird party listed grounding devices for grounding the
metallic frames of PV modules. The devices have to be installed in accordance with the grounding device
manufacturer’ s specified instructions.
Please refer to the “Product Catalogue” link for detailed grounding hole location and size at
www. maysunsolar. com.
Method 1: Tyco grounding bolt # 2058729-1:
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Figure 4 . Tyco grounding bolt # 205872 9- 1
1)Wire bolt and slot
3 ) Aluminum frame
5) Hex Nut
2 ) Mounting wash hex nut
4)0.006 to 0.025in2cable
Tyco grounding hardware comes in a package that includes the grounding bolt, mounting and grounding
hex nut.
Electrical contact is made by penetrating the anodized coating ofthe aluminum frame, and tightening
the mounting hex nut (come with the star washer) to the proper torque of 25 lb f. in.
Grounding wire size (6 to 12 AWG solid bare copper) should be selected and installed underneath the
wire binding bolt.
The wire binding bolt should be tightened to the proper torque of4 5 lbf. in.
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• Tyco grounding hardware comes in a package that includes the grounding bolt, mounting and grounding hex
• Electrical contact is made by penetrating the anodized coating of the aluminum frame, and tightening the
mounting hex nut ( come with the star washer) to the proper torque of 25 lbf. in.
• Grounding wire size (6 to 1 2 AWG solid bare copper) should be selected and installed underneath the wire
binding bolt.
• The wire binding bolt should be tightened to the proper torque of 45 lbf. in.
• The Tyco grounding bolt is only listed for use with 6 to 12 AWG bare solid copper wire.
7.3 Module wiring
All wiring should be performed, by qualified installers, in accordance with the local codes and regulations.
Modules can be connected in series to increase the operating voltage by plugging the positive plug of one module
into the negative socket of the next. Before connecting modules always ensure that the contacts are corrosion free, clean
and dry.
The product can be irreparably damaged if an array string is connected in reverse polarity to another. Always verify
the voltage and polarity of each individual string before making a parallel connection. If you measure a reversed polarity
or a difference of more than 1 0 V between strings then check the string configuration before making the connection.
Maysun Solar modules are provided with stranded copper cables with a cross sectional area of 4mm²(0.006in²)
which are rated for 1000V DC, 90°C and are UV resistant.( For MS.**, 1500 V DC, 90°C and are UV resistant) All
other cables used to connect the DC system should have a similar ( or better) specification. Maysun Solar recommend that
all cables are run inappropriate conduits and sited away from areas prone to water collection.
The maximum voltage of the system must be less than the maximum certified voltage 1000 V typically (For TSM-
PE05A.**, PE14A.** , less than 1500V) and the maximum input voltage of the inverter and of the other electrical
devices installed in the system. To ensure that this is the case, the open circuit voltage of the array string needs to be
calculated at the lowest expected ambient temperature for the location. This can be done using the following formula.
System voltage=N*Voc*[ 1＋λvoc (Tmin -25℃)]
N— — number of modules in series
Voc— —open circuit voltage at STC (refer to product label or datasheet)
λ voc— — Thermal coefficient of Voc of each module ( refer to product datasheet)
Tmin— — minimum
Each module have two standards 90 ° C sunlight resistant output cables each terminated with plug &
play connectors. The wire type and gauge of the output cables are 1000V (For MS.**, ** which are 1500V
DC) rated PV Wire cable and are 12 AWG in size. This cable is suitable for applications where wiring is
exposed to the direct sunlight. We require that all wiring and electrical connections comply with the
appropriate National Electrical Code.
The minimum and maximum outer diameters of the cable are 5 to 7mm(0.038 to 0.076in2).
For field connections, use at least 4 mm2 copper wires insulated for a minimum of 90 °C and sunlight
resistance with insulation designated as PV Wire.
The minimum bending radius cables should be 43mm( 1.69in).
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Incorrect Routing of cable
8. Electrical Configuration
Photovoltaic (electric) systems operate automatically and require very little day-to- day supervision. The solar
array generates DC electricity whenever light falls on it similarly the inverter automatically turns ON as soon as
there is sufficient energy from the solar array to efficiently convert this into grid.
It is recommended to use a suitably rated isolator (DC switch) to interrupt the current flow before disconnecting
the connectors.
Caution:
The module is rated to operate at potentially lethal DC voltages which have the potential can cause severe electrical
shock, arcing and fire hazards. Whilst some solar modules, manufactured by Maysun Solar, are certified to operate up to
1 0 00 V DC (For MS.**, to 1500V DC) always check the module label to confirm the actual rating of your product before
making connections.
8.1 Fusing
When fuses are fitted they should be rated for the maximum DC voltage and connected in each, non- grounded
pole of the array ( i. e. if the system is not grounded then fuses should be connected in both the positive and
negative poles) .
The maximum rating of a fuse connected in series with an array string is typically 15A but the actual module
specific rating can be found on the product label and in the product datasheet.
This fuse rating value also corresponds to the maximum reverse current that a module can withstand ( when one
string is shaded then the other parallel strings of modules will be loaded by the shaded string and current will flow)
and therefore impacts the number of strings in parallel.
8.2 Inverter seletion and compatibility
When installed in systems governed by IEC regulations, Maysun Solar modules normally do not need to be
electronically connected to earth and therefore can be operated together with either galvanically isolated ( with
transformer) and transformerless inverters.
Potential Induced Degradation (PID) is sometimes observed in PV modules due to a combination of high
humidity, high temperature and high voltage. PID is most likely to cause degradation under the following
conditions:
a) Installations in the warm and humid climates
b) Installation close to a source of continual moisture, such as bodies of water
To reduce the risk of PID, we strongly suggest that modules feature Maysun Solar’ s Anti- PID technology,
which can be applied to any Maysun product. Alternatively, we recommend the use of an inverter that includes a
transformer as well as proper grounding ofthe negative DC leg ofthe PV array.
Correct Routing ofcable
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Choose inverters with isolation transformers in hot and wet areas ( such as shores, wetlands) , to ensure proper
module function under positive voltage .
9.Maintenance And Care
A well designed solar system requires minimal maintenance; however, system performance and
reliability can be improved by taking some simple steps.
Maintenance should be carried out at least once a year by trained personnel, always wearing rubber
gloves and boots with maximum working voltage not lower than 10 00 V DC (For MS.** , not lower than
1500V DC).
Maysun any vegetation which may shade the solar array thus impacting performance.
Check that mounting hardware is properly tightened.
Inspect all cables to verify that connections are tight; the cables are protected from direct sunlight and
sited away from areas of water collection.
Check that all string fuses in each non/ earthed pole are operating.
It is recommended to check the torque of terminal bolts and the general condition of wiring at least once
a year. Also, check that mounting hardware is properly torqued. Loose connections will result in damage to
the array.
Replacement modules must be of same type. Do not touch live parts of cables and connectors. Use
appropriate safety equipment (insulated tools, insulating gloves, etc. ) when handling modules.
The amount of electricity generated by a solar module is proportional to the amount of light falling on it.
A module with shaded cells will produce less energy and therefore it is important to keep modules clean.
Normally rain water is sufficient to keep the modules clean however it is particularly important to ensure
that the solar modules are clean before onset of summer. Products installed at a tilt angle below 10 ° or which
are located in particularly dusty areas, are installed in landscape orientation or in areas of high pollution or
close to large bird populations will require more regular cleaning.
When cleaning the module use a soft cloth together with a mild detergent and clean water. Take care to
avoid severe thermal shocks which might damage the module by cleaning modules with water which has a
similar temperature to the modules being cleaned.
When cleaning the back surface of the module, take care to avoid penetrating the substrate material.
Modules that are mounted flat (0 °tilt angle) should be cleaned more often, as they will not '' self-clean'' as
effectively as modules mounted at a 1 0 °tilt or greater.
The benefit of cleaning dirt and debris from the array is a trade-off between the cost of the cleaning,
increased energy production as a result of this cleaning, and the inevitable re-soiling of the laminates over
time once they have been cleaned.
In the event that the solar modules need to be cleaned then clean the module use a soft cloth together
with a mild detergent and clean water. Take care to avoid severe thermal shocks which might damage the
module by cleaning modules with water which has a similar temperature to the modules being cleaned.
On large systems, the benefit of cleaning dirt and debris from the array is a trade-off between the cost of
the cleaning, increased energy production as a result of this cleaning, and the time for the re- soiling of the
modules after cleaning.
If you are unsure whether the array or section thereof needs to be cleaned then first select an array string
that is particularly soiled then Measure & record the inverter feed in current from that string
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The above verification should only be carried out when the insolation is effectively constant ( clear sky,
strong sunshine, no clouds)
The back surface of the module normally does not need to be cleaned but, in the event this is deemed
necessary, avoid the use of any sharp projects that might damage the penetrating the substrate material.
Cover the front surface of modules by an opaque material when repairing. Modules when exposed to
sunlight generate high voltage and are dangerous.
Maysun Solar PV modules are equipped with bypass diodes in the junction box. This minimizes module
heating
Do not try to open the junction box to change the diodes even if they malfunction.
In a system using a battery, blocking diodes are typically placed between the battery and the PV module
output to prevent.
10. Disclaimer Of Liability
The installation, handling and use of Maysun Solar crystalline modules are beyond company control.
Maysun Solar does not assume any responsibility for loss, damage, injury or expense resulting from the
improper installation, handling, use or maintenance.
Maysun Solar assumes no responsibility for any infringement of patents or other rights of third parties
that may result from use of the module. No license is granted by implication or under any patent or patent
rights.
Specifications included in this manual are subject to change without prior notice.
Maysun Solar China Head Office
Add: Hangzhou City, Zhejiang Province, 310006, P.R. China
Tel.: +86571-85273827
Web: www. maysunsolar. com
This manual suits for next models
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