Jinko Solar MM400-54HLD-MBV User manual

JinkoSolar
Photovoltaic Module
Installation Manual

Contents
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Edition 01/2022
18
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Appendix2：Electrical Specifications 23
1 General Information
2. Installation
1.1 Overview
1.2 Warnings
2.1 Installation Safety
2.2 Installation Condition
2.3 Mechanical Installation Introduction
2.2.1 Climate Condition
2.2.2 Site Selection
2.3.1 Mounting with Bolts
2.2.3 Tilt Angle Selection
4 Maintenance and Care
5 Electrical Specification
4.1 Visual Inspection
4.3 Inspection of Connector and Cable
6 Disclaimer of Liability
4.2 Cleaning
2.3.2 Mounting with Clamps
Appendix1：Applicable Products
3 Wiringand Connections
IEC 2016

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1. General Information
1.1 Overview
Thanks for choosing Jinko Solar PV modules. In order to ensure the PV modules are installed correctly,
please read the following installation instructions carefully before modules are installed and used.
Please remember that these products generate electricity and certain safety measures need to be taken
to avoid danger.
Make sure the module array is designed in such a way not to exceed the maximum system voltage of
any system component such as connectors or inverters.
The assembly is to be mounted over a fire resistant roof covering rated for the application. Before
mounting the module, please consult your local building department to determine approved roofing
materials.
The modules are qualified for application class A: Hazardous voltage (IEC 61730: higher than 50V DC;
EN 61730: higher than 120V), hazardous power applications (higher than 240W) where general contact
access is anticipated. Modules qualified for safety through EN IEC 61730 -1 and - 2 within this application
class are considered to meet the requirements for Safety Class II.
1.2 Warnings
PV modules generate DC electrical energy when exposed to sunlight or other light sources. Active
parts of module such as terminals can result in burns, sparks, and lethal shock.
Artificially concentrated sunlight shall not be directed on
the module or panel.
Front protective glass is utilized on the module. Broken
solar module glass is an electrical safety hazard (may
cause electric shock or fire). These modules cannot be
repaired and should be replaced immediately.
To reduce the risk of electrical shocks or burns, modules
may be covered with an opaque material during installation to avoid injury.
The installation work of the PV array can only be done under the protection of sun-sheltering covers
or sunshades and only qualified person can install or perform maintenance work on this module.
Follow the battery manufacture’s recommendations if batteries are used with modules.
Do not use this module to replace or partly replace roofs and walls of living buildings.
Do not install modules where flammable gas may be present.
Do not remove any part installed by Jinko Solar or disassemble the module.

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All instructions should be read and understood before attempting to install, wire, operate and
maintain the module.
Don’t lift up PV modules using the attached cables or the junction box.
Do not touch live terminals with bare hands. Use insulated tools for electrical connections.
All PV systems must be grounded to earth. If thereis no special regulation, please follow the National
Electrical Code or other national code.
Under normal conditions, a photovoltaic module is likely to experience conditions that produce more
current and/or voltage than reported at standard test conditions. Accordingly, the value of Isc and
Voc marked on the module should be multiplied by 1.25 when determining PV system component
voltage ratings, conductor current ratings, fusesizes, and size of controls connected tothePV output.
Once the PV module has been shipped to the installation site, all of the parts should be unpacked
properly with care.
Do not stand or step on the PV module like below pictures show. This is prohibited and there is a
risk of damage to the module and cause injury for you.
Only PV modules with the same cell size should be connected in series.
During transporting modules, please attempt to minimize shock or vibration to the module, as this
may damage the module or lead to cell micro cracks.
During all transportation situations, never drop the module from a vehicle, house or hands. This will
damage module.
Do not clean the glass with chemicals. Only use tap water. Make sure the module surface
temperature is cool to the touch. Cleaning modules with cool water when module surface temp is
high may result in glass breakage.

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Do not disconnect any of the modules when under load.
When looking at PV modules with anti-reflection (AR) coating technology, it will be normal to see
some cells with a slight color difference at different angles. Modules with LRF(light reflective film)
and without LRF should not be built in the same array or roof.
Connector of junction box can not be contacted with oily substances, for example, lubricant, rust
inhibitor etc.
The maximum altitude the PV module is designed for ≤ 2000m.
The maximum irradiance is 1300W/m2for module with transparent rear.
Meaning of crossed –out wheeled dustbin:
Do not dispose of electrical appliances as unsorted municipal waste,
use separate collection facilities.
Contact your local government for information regarding the collection
systems available.
If electrical appliances are disposed of in landfills or dumps, hazardous
substances can leak into the groundwater and get into the food chain,
damaging your health and well-being.
When replacing old appliances with new ones, the retailer is legally
obligated to take back your old appliance for disposals at least free of
charge.
2. Installation
2.1 Installation Safety
Always wear protective head gear, insulating gloves and safety shoes (with rubber soles).
Keep the PV module packed in the carton until installation.
Do not touch the PV module unnecessarily during installation. The glass surface and the frame may
be hot. There is a risk of burns and electric shock.
Do not work in rain, snow or windy conditions.
Due to the risk of electrical shock, do not perform any work if the terminals of the PV module are wet.
Use insulated tools and do not use wet tools.
When installing PV modules, do not drop any objects (e.g., PV modules or tools).
Make sure flammable gasses are not generated or present near the installation site.
Insert module connectors fully and correctly. An audible "click" sound should be heard. This sounds
confirms the connectors are fully seated. Check all connections.
The module leads should be securely fastened to the module frame, Wire Management should be

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done in a way to avoid the connector from scratching or impacting the back sheet of the module.
Do not touch the junction box and the end of the interconnect cables (connectors) with bare hands
during installation or under sunlight, regardless if the PV module is connected to or disconnected
from the system.
Do not expose the PV module to excessive loads on the surface of the PV module or twist the frame.
Do not hit or put excessive load on the glass or back sheet, this may break the cells or cause micro
cracks.
During the installation or operation, don’t use sharp tools to wipe the back sheet and glass. Scratches
can appear on the module.
Do not drill holes in the frame. It may cause corrosion of the frame.
When installing modules on roof mounted structures, please try to follow the “from top to bottom”
and/or “from left to right” principle, and don’t step on the module. This will damage the module and
would be dangerous for personal safety.
2.2 Installation Condition
2.2.1 Climate Condition
Please install the modules in the following conditions:
a) Operating temperature: within –40°C(-40℉) to 85°C (185℉)
b) Humidity: < 85RH%
﹡Note: The mechanical load bearing (include wind and snow loads) of the module is based on the
approved mounting methods. The professional system installer must be responsible for mechanical load
calculation according to the system design.
2.2.2 Site Selection
In most applications, Jinko solar PV modules should be installed in a location where they will receive
maximum sunlight throughout the year. In the Northern Hemisphere, the module should typically face
south, and in the Southern Hemisphere, the modules should typically face north. Modules facing 30
degrees away from true South (or North) will lose approximately10 to 15 percent of their power output. If
the module faces 60 degrees away from true South (or North), the power loss will be 20 to 30 percent.
When choosing a site, avoid trees, buildings or obstructions, which could cast shadows on the solar
photovoltaic modules especially during the winter months when the arc of the sun is lowest over the
horizon. Shading causes loss of output, even though the factory fitted bypass diodes of the PV module
will minimize any such loss.
Do not install the PV module near open flame or flammable materials.
When solar modules are used to charge batteries, the battery must be installed in a manner, which will
protect the performance of the system and the safety of its users. Follow the battery manufacturer’s

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guidelines concerning installation, operation and maintenance recommendations. In general, the battery
(or battery bank) should be away from the main flow of people and animal traffic. Select a battery site
that is protected from sunlight, rain, snow, debris, and is well ventilated. Most batteries generate hydrogen
gas when charging, which can be explosive. Do not light matches or create sparks near the battery bank.
When a battery is installed outdoors, it should be placed in an insulated and ventilated battery case
specifically designed for the purpose.
Do not install the PV module in a location where it would be immersed in water or continually exposed to
water from a sprinkler or fountain etc.
The PV module can be installed at a distance of 50 m to 500m from the seashore. However, when
installing module within the distance, protect the connectors or add dust plugs. After removing the dust
plugs, connect the connectors immediately and take other anti-rust measures to prevent rust.
When the modules are installed on the roof, they must be separated from the roof by more than 10cm to
facilitate air circulation and heat dissipation.
2.2.3 Tilt Angle Selection
The tilt angle of the PV module is measured between the surface of the PV module and a horizontal
ground surface (Figure 1). The PV module generates maximum output power when it faces the sun
directly.
For standalone systems with batteries where the PV modules are attached to a permanent structure, the
tilt angle of the PV modules should be selected to optimize
the performance based on seasonal load and sunlight. In
general, if the PV output is adequate when irradiance is
low (e.g., winter), then the angle chosen should be
adequate during the rest of the year. For grid-connected
installations where the PV modules are attached to a
permanent structure, PV modules should be tilted so that
the energy production from the PV modules will be
maximized on an annual basis.
Figure1: PV module tilt angle
2.3 Mechanical Installation Introduction
Solar PV modules usually can be mounted by using the following methods: bolts and clamps.
﹡Note:
1) All installation methods herein are only for reference, andJinko solar will not providerelated mounting
components, the system installer or trained professional personnel must be responsible for the PV
system’s design, installation, and mechanical load calculation and security of the system.

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2) Before installation, the following items should be addressed:
a) Visually check the module for any damage. Clean the module if any dirt or residue remains from
shipping .
b) Check if module serial number stickers match.
3) Jinko modules are designed to meet a maximum positive (or downward) pressure of 3600Pa (Only
refer to the mentioned module type in this manual) and negative (or upward) pressure of 1600Pa.
This design load was then tested with a safety factor of 1.5 times. So Jinko modules are tested under
a maximum downward pressure of 5400Pa and upward pressure of 2400Pa. When mounting
modules in snow-prone or high-wind environments, special care should be taken to mount the
modules in a manner that provides sufficient design strength while meeting local code requirements.
2.3.1 Mounting with Bolts
For mounting with bolts, the following modules in tables 1 are applicable.
The frame of each module has 8 mounting holes (Length* Width: 14mm*9mm) used to secure the
modules to support structure. Always use all the eight mounting holes to secure the modules. The module
frame must be attached to a mounting rail using M8 corrosion-proof bolts together with spring washers
and flat washers in eight symmetrical locations on the PV module. The applied torque value should be
big enough to fix themodules steadily. Thereference value forM8 bolt is16~20N*m. Asto special support
system or special installation requirement, please reconfirm with the support’s supplier for the torque
value. Please find detailed mounting information in the below illustration as Figure 2&3&4.

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2.3.1.1 Mounting with Bolts（eight mounting holes）
Figure 2: PV module installed with bolt fitting method（eight mounting holes）
Module type
Max. Design Pressure: 3600Pa
(positive ) &1600Pa (negative)
mechanical load
Max. Design Pressure: 3600Pa
(positive ) &1600Pa (negative)
mechanical load
Module dimensions(mm)
A*B
54P
Height of the frame（mm）
35
30
Group 21
/
1722*1134
60P
Height of the frame（mm）
35
30
Group 1
1650*992 & 1665*1002
/
Group 2
1665*992 & 1684*1002
/
Group 3
1650*992 & 1665*1002
/
Group 4
1665*992 & 1684*1002
/
Group 5
1665*992 & 1684*1002
1672*992 & 1704*1008
/
Group 17
/
1904*1134
Group 20
/
1756*1039
72P
Height of the frame（mm）
40
30
Group 6
1956*992 & 1979*1002
/
Group 7
1987*992 & 2008*1002
/
Group 8
1956*992 & 1979*1002
/
Group 9
1987*992 & 2008*1002
/
Group 10
1987*992 & 2008*1002 &
2031*1008
/
Height of the frame（mm）
35
Group 18
2274*1134
Group 19
2090*1039 & 2090*1038
/
66P
Height of the frame（mm）
35
30
Group 12
1840*998 & 1841*1002
Group 14
1868*1008 & 1865*1005

-8-
Group 16
1840*998 & 1841*1002
78P
Height of the frame（mm）
40
35
Group 11
2163*995 & 2167*997 & 2167*998
& 2166*1002
Group 13
2194*1008 & 2190*1005
Group 15
2163*995 & 2167*997 & 2167*998
& 2166*1002
Table 1: Mechanical dimensions for bolt fitting method（eight mounting holes）
Note：Group 1~20 refer to appendix 1 for details.
The load described in this manual is the design load. When calculating the maximum test load, 1.5 times of
safety factor should be considered.
2.3.1.2 Mounting with Bolts（four mounting holes）
Figure 3: PV module installed with bolt fitting method（four mounting holes）
Module type
Max. Design Pressure: 3600Pa (positive ) &1600Pa
(negative) mechanical load
Module dimensions(mm)
A*B
60P
Height of the frame（mm）
30
Group 1
1650*992 & 1665*1002
Group 2
1665*992 & 1684*1002
Group 3
1650*992 & 1665*1002
Group 4
1665*992 & 1684*1002
Group 5
1665*992 & 1684*1002
1672*992 & 1704*1008
72P
Height of the frame（mm）
30
Group 6
1956*992 & 1979*1002
Group 7
1987*992 & 2008*1002
Group 8
1956*992 & 1979*1002
Group 9
1987*992 & 2008*1002
Group 10
1987*992 & 2008*1002 & 2031*1008
Height of the frame（mm）
35

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Group 18
2274*1134
66P
Height of the frame（mm）
30
Group 12
1840*998 & 1841*1002
Group 14
1868*1008 & 1865*1005
Group 16
1840*998 & 1841*1002
78P
Height of the frame（mm）
35
Group 11
2163*995 & 2167*997 & 2167*998 & 2166*1002
Group 13
2194*1008 & 2190*1005
Group 15
2163*995 & 2167*997 & 2167*998 & 2166*1002
Table 2: Mechanical dimensions for bolt fitting method（four mounting holes）
Note：The installation method of bolt fitting（four mounting holes）is based on the internal results in Jinko.
The load described in this manual is the design load. When calculating the maximum test load, 1.5 times of
safety factor should be considered.
2.3.1.3 Mounting with Bolts（Nextracker four mounting holes）
Figure 4: PV module installed with bolt fitting method (NEX)
Module type
Max. Design Pressure: 1067Pa (positive ) &1067Pa
(negative) mechanical load
Module dimensions(mm)
A*B
72P
Height of the frame（mm）
40
30
Group 6
1956*992 & 1979*1002
Group 7
1987*992 & 2008*1002
Group 8
1956*992 & 1979*1002
Group 9
1987*992 & 2008*1002
Group 10
1987*992 & 2008*1002 & 2031*1008
78P
Height of the frame（mm）
40
35
Group 11
2163*995 & 2167*997 & 2167*998 & 2166*1002
Group 13
2194*1008 & 2190*1005
Group 15
2163*995 & 2167*997 & 2167*998 & 2166*1002

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Table 3: Mechanical dimensions for bolt fitting method (NEX)
Note：The installation method of bolt fitting (NEX) is based on the experimental results in Jinko.
The design of the Nextracker tracking bracket, the selection of accessories and the installation of modules
should be completed by a professional system installer, which can refer to Jinko's mechanical load.
The load described in this manual is the design load. When calculating the maximum test load, 1.5 times of
safety factor should be considered.
2.3.2 Mounting with clamps
The module 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, please be sure to use at least
four clamps on each module, two clamps should be attached on each long sides of the module.
Depending on the local wind and snow loads, if excessive pressure load is expected, additional clamps
or support would be required to ensurethe modulecan bear the load.
The applied torque value should be big enough to fix the modules
steadily (Please consult with the clamp or support’s supplier for the
specific torque value). Please find detailed mounting information in
the below illustration, the mounting place distance is suggested
bigger than J and less than K. The installation diagram of clamp is
shown in figure 5.
Note: The Movement of the mounting rail and the clamps center line
are recommended to be within the black arrow area.

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As shown in the figure on the right, the minimum length L of the clamps is 50mm.
Figure 5: PV module installed at the side with Clamp fitting method
Clamp type
Dimension(mm)
Composition material
End Clamp
(40 mm thickness)
39 x 50 x 42
39 x 60 x 42(For 1.5mm thickness frame)
Aluminum-alloy
End Clamp
(35 mm thickness)
41.5 x 50 x 40
End Clamp
(30 mm thickness)
41.5 x 50 x 35
Middle Clamp
(40 mm & 35 mm
thickness)
42 x 50 x 28
42 x 60 x 28(For 1.5mm thickness frame)
Q
R
P
13.5
15
2.5
Middle Clamp
(30 mm thickness)
42 x 50 x 29.5
Q
R
P
14
14
3
Table 4: Mechanical dimensions, specification and material when modules installed with mid Clamp
When installing modules using clamps on the long side of the frame, the applicable product types and
installation locations are shown in figure 6 and table 5.
When installing modules using clamps on the short side of the frame, the applicable product types and
Middle modules installation
Fringe modules installation

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installation locations are shown in figure 7 and table 6.
When installing modules using clamps on the long side & short side of the frame, the applicable product
types and installation locations are shown in figure 8 and table 7.
When installing modules using clamps on the long side of the frame, the applicable product types and
installation locations (The without C transparent backsheet series module) are shown in figure 9 and
table 8.
2.3.2.1 Clamp Mounting on Long Sides of the Frames
Figure 6: Installation of clamps on long side of frames
Module type
Max. Design Pressure:
3600Pa (positive )
&1600Pa (negative)
mechanical load
3600Pa (positive )
&1600Pa (negative)
mechanical load
Module dimensions(mm)
A*B
J
K
J
K
54P
Height of the frame（mm）
35
30
Group 21
1722*1134
/
/
L/4±50mm( L is the
length of the long side
of the module)
60P
Height of the frame（mm）
35
30
Group 1
1650*992 & 1665*1002
280
420
L/4±50mm( L is the
length of the long side
of the module)
Group 2
1665*992 & 1684*1002
280
420
Group 3
1650*992 & 1665*1002
280
420
Group 4
1665*992 & 1684*1002
280
420
Group 5
1665*992 & 1684*1002
1672*992 & 1704*1008
280
420
Group 17
1904*1134
/
/
Group 20
1756*1039
/
/

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72P
Height of the frame（mm）
40
30
Group 6
1956*992 & 1979*1002
280
420
L/4±50mm( L is the
length of the long side
of the module)
Group 7
1987*992 & 2008*1002
280
420
Group 8
1956*992 & 1979*1002
280
420
Group 9
1987*992 & 2008*1002
280
420
Group 10
1987*992 & 2008*1002 & 2031*1008
280
420
Height of the frame（mm）
35
/
Group 18
2274*1134
400
580
/
Group 19
2090*1039 & 2090*1038
L/4±50mm
66P
Height of the frame（mm）
35
30
Group 12
1840*998 & 1841*1002
280
420
L/4±50mm( L is the
length of the long side
of the module)
Group 14
1868*1008 & 1865*1005
280
420
Group 16
1840*998 & 1841*1002
280
420
78P
Height of the frame（mm）
40
35
Group 11
2163*995 & 2167*997
2167*998 & 2166*1002
380
520
L/4±50mm( L is the
length of the long side
of the module)
Group 13
2194*1008 & 2190*1005
380
520
Group 15
2163*995 & 2167*997
2167*998 & 2166*1002
380
520
Table 5: Mechanical dimensions of modules installed with clamps on long side of frame
Note：The load described in this manual is the design load. When calculating the maximum test load, 1.5
times of safety factor should be considered.
2.3.2.2 Clamp Mounting on Short Sides of the Frames
Figure 7: Installation of clamps on short side of frames
Module type
Max. Design Pressure:
1067Pa (positive )
&1067Pa (negative)
mechanical load
1067Pa (positive )
&1067Pa (negative)
mechanical load
Module dimensions(mm)
A*B
J
K
J
K
54P
Height of the frame（mm）
35
30

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Group 21
1722*1134
/
/
100
240
60P
Height of the frame（mm）
35
30
Group 1
1650*992 & 1665*1002
50
240
100
240
Group 2
1665*992 & 1684*1002
50
240
100
240
Group 3
1650*992 & 1665*1002
50
240
100
240
Group 4
1665*992 & 1684*1002
50
240
100
240
Group 5
1665*992 & 1684*1002
1672*992 & 1704*1008
50
240
100
240
72P
Height of the frame（mm）
40
30
Group 6
1956*992 & 1979*1002
50
240
100
240
Group 7
1987*992 & 2008*1002
50
240
100
240
Group 8
1956*992 & 1979*1002
50
240
100
240
Group 9
1987*992 & 2008*1002
50
240
100
240
Group 10
1987*992 & 2008*1002 &
2031*1008
50
240
100
240
66P
Height of the frame（mm）
35
30
Group 12
1840*998 & 1841*1002
130
240
130
240
Group 14
1868*1008 & 1865*1005
130
240
130
240
Group 16
1840*998 & 1841*1002
130
240
130
240
Table 6: Mechanical dimensions of modules installed with clamps on short side of frame
Note：The installation method of clamps on short sides is based on the internal results in Jinko.
The load described in this manual is the design load. When calculating the maximum test load, 1.5 times of
safety factor should be considered.
2.3.2.3 Clamp Mounting on Long & Short Sides
Figure 8: Installation methods of clamps on long and short sides
Module type
Max. Design
Pressure:
1600Pa (positive ) &1600Pa
(negative) mechanical load
1600Pa (positive ) &1600Pa (negative)
mechanical load

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Module
dimensions(mm)
A*B
J
K
M
N
J
K
M
N
54P
Height of the frame（mm）
35
30
Group 21
1722*1134
/
/
/
/
100
240
L/4±50mm( L is
the length of the
long side of the
module)
60P
Height of the frame（mm）
35
30
Group 1
1650*992 &
1665*1002
50
240
280
420
100
240
L/4±50mm( L is
the length of the
long side of the
module)
Group 2
1665*992 &
1684*1002
50
240
280
420
100
240
Group 3
1650*992 &
1665*1002
50
240
280
420
100
240
Group 4
1665*992 &
1684*1002
50
240
280
420
100
240
Group 5
1665*992 &
1684*1002
1672*992 &
1704*1008
50
240
280
420
100
240
Group 17
1903*1134
/
/
/
/
100
240
Group 20
1756*1039
/
/
/
/
100
240
72P
Height of the frame（mm）
40
30
Group 6
1956*992 &
1979*1002
50
240
280
480
100
240
L/4±50mm( L is
the length of the
long side of the
module)
Group 7
1987*992 &
2008*1002
50
240
280
480
100
240
Group 8
1956*992 &
1979*1002
50
240
280
480
100
240
Group 9
1987*992 &
2008*1002
50
240
280
480
100
240
Group 10
1987*992 &
2008*1002 &
2031*1008
50
240
280
480
100
240
66P
Height of the frame（mm）
35
30
Group 12
1840*998 &
1841*1002
130
240
280
420
130
240
L/4±50mm( L is
the length of the
long side of the
module)
Group 14
1868*1008 &
1865*1005
130
240
280
420
130
240
Group 16
1840*998 &
1841*1002
130
240
280
420
130
240
78P
Height of the frame（mm）
40
35
Group 11
2163*995 &
2167*997
2167*998 &
2166*1002
130
240
380
520
130
240
L/4±50mm( L is
the length of the
long side of the
module)
Group 13
2194*1008 &
2190*1005
130
240
380
520
130
240
Group 15
2163*995 &
2167*997
2167*998 &
2166*1002
130
240
380
520
130
240

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Table 7: Mechanical dimensions of modules installed with clamps on short side of frame
Note：The installation method of clamps on long and short sides is based on the internal results in Jinko.
The load described in this manual is the design load. When calculating the maximum test load, 1.5 times of
safety factor should be considered.
2.3.2.4 Clamp Mounting on Long Sides of the Frames (The without C transparent
backsheet series module)
Figure 9: Installation methods of clamps on long sides
Module type
Max. Design Pressure:
3600Pa (positive )
&1600Pa (negative)
mechanical load
Module dimensions(mm)
A*B
J
K
78P
Height of the frame（mm）
40
Group 13
2194*1008 & 2190*1005
300
480
Table 8: Mechanical dimensions when modules installed at long side with Clamp fitting method
Note：The load described in this manual is the design load. When calculating the maximum test load, 1.5
times of safety factor should be considered.
3. Wiring and Connection
a) Before this procedure, please read the operation instructions of the PV system carefully. Make wiring
by Multi-connecting cables between the PV modules in series or parallel connection, which is
determined by user’s configuration requirement for system power, current and voltage.
b) PV modules connected in series should have similar current, and modules must not be connected

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together to create a voltage higher than the permitted system voltage. The maximum number of
modules in series depends on system design, the type of inverter used and environmental conditions.
c) The maximum fuse rating value in an array string can be found on the product label or in the product
datasheet. The fuse rating value is also corresponding to the maximum reverse current that a module
can withstand, i.e. when one string is in shade then the otherparallel strings of modules will be loaded
by the shaded string and the current will pass through to create a current circuit. Based on the
maximum series fuse rating of module and local electrical codes and standards, make sure the
modules strings in parallel are protected with the appropriate in-line string fusing.
d) Open the combiner box of the control system and connect the conductor from the PV arrays to the
combiner box in accordance with the design and local codes and standards. The cross-sectional area
and cable connector capacity must satisfy the maximum short-circuit of the PV system (for a single
component, we recommended that the cross-sectional area of cables be 4mm2and the rated current
of connectors be more than 10A), otherwise cables and connectors will become overheating for large
current. Please pay attention to the temperature limit of cables is 85℃.
e) All module frames and mounting racks must be properly grounded in accordance with local and
national electrical codes. Attach the equipment grounding conductor to the module frame using the
hole and hardware provided. Note that a stainless steel star washer is used between the ground wire
and module frame (see Figure 10 below).This washer is used to avoid corrosion due to dissimilar
metals. Tighten the screw securely.
Figure 10：Ground installation of PV modules
f) Follow the requirements of applicable local and national electrical codes.
g) These modules contain factory installed by pass diode .If these modules are incorrectly connected to
each other, the bypass diodes, cable or junction box may be damaged.
h) The cable of the junction box is defined as L, as showed below in Figure 11. For Jinko standard full
module L is 900/1200mm, the half–cut module L is 145/290mm, and the SWAN bifacial module L is
150/250mm. For customized module, L can be based on your condition. Please take the cable length
into consideration before designing the wiring layout.

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Figure 11 (1): The full module junction box
Figure 11 (2): The half–cut module/SWAN bifacial module junction box
i) It is recommend to use negatively grounded inverters to avoid the PID effect for non-PID free
modules.
j) If modules are connected in series, the total voltage is equal to the sum of individual voltages. The
recommended as below,
System voltage≥N*Voc[1+TCVoc* (Tmin-25)]
Where
N module numbers in series
Voc Open circuit voltage (refer to product label or data sheet)
TCVoc Temperature coefficient of open circuit voltage (refer to product label or data sheet)
Tmin Minimum ambient temperature
4. Maintenance and Care
It is required to perform regular inspection and maintenance of the modules, especially during the
warranty period. To ensure optimum module performance, Jinko recommends the following maintenance
measures:
4.1 Visual Inspection