LONGI LR6-60-M Series User manual

Installation Manual for
LONGi Solar PV Modules
V15

Safety Note
01
• This manual elaborates on installation and safety use information for PV power gener-
ating modules (hereinafter referred to as module) of LONGi Solar Technology Co., Ltd.
(hereinafter referred to as LONGi). Please abide by all safety precautions in this guide
and local regulations.
• Installation of modules requires professional skills and knowledge and is to be carried
out by qualified personnel. Please read this manual carefully before installing and using
this module. Installation personnel shall get familiar with mechanical and electrical
requirements of this system. Please keep this manual properly as reference for future
maintenance or upkeep or for sales and treatment of modules.
• If you have any doubts, please contact LONGi customer service personnel for further
interpretation.
Applicable Module Type Status
Module
Structure
Monofacial
Module
LR6-60-***M LR6-72-***M IEC、UL single glass
LR6-60BK-***M LR6-72BK-***M IEC、UL single glass
LR6-60HV-***M LR6-72HV-***M IEC、UL single glass
LR6-60PB-***M LR6-72PB-***M IEC、UL single glass
LR6-60PE-***M LR6-72PE-***M IEC、UL single glass
LR6-60PH-***M LR6-72PH-***M IEC、UL single glass
LR6-60MP-***M LR6-72MP-***M IEC single glass
LR6-60MPH-***M LR6-72MPH-***M IEC single glass
LR6-60HPH-***M LR6-72HPH-***M IEC、UL single glass
LR6-60HPH-***MC LR6-72HPH-***MC IEC、UL single glass
LR6-60HPB-***M / IEC、UL single glass
LR6-60OPH-***M LR6-72OPH-***M IEC single glass
LR6-60DG-***M LR6-72DG-***M IEC、UL double glass
LR6-60PD-***M LR6-72PD-***M IEC、UL double glass
LR6-60HPD-***M LR6-72HPD-***M IEC、UL double glass
LR6-60HIH-***M LR6-72HIH-***M IEC、UL single glass
LR6-60HIB-***M / IEC、UL single glass
LR4-50HPH-***M / IEC、UL single glass
LR4-60HPH-***M LR4-72HPH-***M IEC、UL single glass
LR4-60HPB-***M / IEC、UL single glass
LR4-60HIH-***M LR4-72HIH-***M IEC、UL single glass
LR4-60HIB-***M / IEC、UL single glass
LR4-66HPH-***M / IEC、UL single glass
LR4-66HP-***M / IEC、UL single glass
LR4-66HIH-***M / IEC、UL single glass
LR5-54HPH-***M / IEC、UL single glass
LR5-54HPB-***M / IEC、UL single glass
LR5-54HIH-***M / IEC、UL single glass
LR5-54HIB-***M / IEC、UL single glass
LR5-54HNB-***M / IEC、UL single glass
LR5-54HTH-***M /IEC、UL single glass
LR5-54HTB-***M /IEC、UL single glass
LR5-66HPH-***M LR5-72HPH-***M IEC、UL single glass
LR5-66HIH-***M LR5-72HIH-***M IEC、UL single glass
/ LR5-72HTH-***M IEC、UL single glass
Bifacial
Module
LR6-60BP-***M LR6-72BP-***M IEC、UL double glass
LR6-60HBD-***M LR6-72HBD-***M IEC、UL double glass
LR6-60HBD-***MC LR6-72HBD-***MC IEC、UL double glass
/ LR6-78HBD-***M IEC、UL double glass
LR6-60OPD-***M LR6-72OPD-***M IEC double glass
LR6-60HIBD-***M LR6-72HIBD-***M IEC、UL double glass
LR4-60HBD-***M LR4-72HBD-***M IEC、UL double glass
LR4-60HIBD-***M LR4-72HIBD-***M IEC、UL double glass
LR5-66HBD-***M LR5-72HBD-***M IEC、UL double glass
LR5-66HIBD-***M LR5-72HIBD-***M IEC、UL double glass
/ LR5-72HND-***M IEC、UL double glass
/ LR5-72HTD-***M IEC、UL double glass

Contents
1 / Introduction
2 / Laws and Regulation
3 / General Information
4 / Installation Conditions
4.1 Installation Site and Working Environment
4.2 Selection of Tilt Angles
5 / Mechanical Installation
6 / Electrical installation
7 / Grounding
8 / Operation and maintenance
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02
3.1 Modules Identification
3.2 Junction box style and wiring method
3.3 Regular Safety
3.4 Electrical Performance Safety
3.5 Operation Safety
3.6 Fire Safety
5.1 Regular Requirements
5.2 Monofacial assembly mechanical installation
5.2.1 Bolts Mounting
5.2.2 Clamp Mounting
5.2.3 Installation and Mechanical Load of Monofacial Module
5.3 Bifacial module Mechanical Installation
5.3.1 Bolts Mounting
5.3.2 Clamps Installation
5.3.3 Installation and Mechanical Load of Bifacial Module
6.1 Electrical Performance
6.2 Cables and Wiring
6.3 Connector
6.4 Bypass diode
6.5 PID Protection and Inverter Compatibility
8.1 Cleaning
8.2 Module Appearance Inspection
8.3 Inspection of Connectors and Cables
9 Release and execution

1
Electrical and mechanical installation information will be introduced in this installation manual, so please read and under-
stand the information before installing LONGi modules. In addition, this manual also contains some safety information that
you shall be familiar with. All contents in this manual are intellectual properties of LONGi which originates from long term of
technical exploration and experience accumulation of LONGi.
This installation manual does not entail any explicit or implicit quality warranty and does not stipulate on compensation
schemes for losses, module damages or other costs caused by or related to module installation, operation, utilization and
maintenance process. LONGi will not take any responsibility if patent rights or the third party rights are infringed by use of
modules. LONGi reserves the rights for modifying product manual or installation manual without noticing in advance. It is
recommended to visit our website regularly at www.longi.com for the latest version of this installation manual.
If customers fail to install modules as per requirements set forth in this manual, the limited warranty provided for customers
will be invalid. In addition, suggestions in this manual are to improve safety of module installation, which are tested and
proved by practices. Please provide this manual to PV system users for reference and inform the advises on operation,
maintenance requirements etc.
2
Introduction
Laws and Regulation
The mechanical and electrical installation of photovoltaic modules shall be in accordance with applicable regula-
tions, including electrical law, construction law and electrical connection requirements. These regulations vary
from sites to sites, for example, building roof installation, vehicle applications, etc. Requirements may also vary
depending on the installed system voltage, DC or AC. Please contact local authorities for specific terms.
03

3General Information
3.1 Modules identification
Three labels on the module contain the information below:
1. Nameplate: product type, rated power, rated current, rated voltage, open circuit voltage, short circuit current under testing
conditions, certification indicator, maximum system voltage, etc.
2. Current classification label: Rated working current.(H indicates High, M indicates Medium, L indicates Low)
3. Serial Number label: A unique serial number which is laminated inside the module permanently which can be found in the
front of the module. There is another same serial number beside the module nameplate.
6
1234
5
04
Figure 1 Typical Mechanical Drawing of Mono-facial Modules
(Please refer to section 3.2 for the location of the junction box. The specific version is subject to the corresponding specification.)
1 Frame 2 Glass 3 EVA 4 Solar Cell
5 Backsheet 6 Silica Gel 7 Junction Box 8 Name Plate
9 Cable 10 Connector 11 Mounting Hole 12 Grounding Hole
13 Drain Hole 14 Bar Code
12
7
10 10
8
99
14
13
11

Bifacial Modules (With Frame)
Bifacial Modules (Frameless)
2
34
3
5
12
3
4
5
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Figure 2 Typical Modules Mechanical Drawing
（Please refer to section 3.2 for the location of the junction box. The specific version is subject to the corresponding specification.）
10
9
7
8
12
11
1 Frame 2 Front Glass 3 EVA / POE 4 Solar Cell
5 Back Glass 6 Sealant 7 Junction Box 8 Name Plate
9 Mounting Holes 10 Grounding Holes 11 Drain Holes 12 Bar Code

06
3.2 Junction box style and wiring method
Junction Box Location Icon Recommended Wiring Method
Vertical Installation: Standard Cable Length
(Note：One end of the single row needs to be extended.
Horizontal Installation: Standard Cable Length
Vertical Installation: Standard Cable Length
(Note: One end of the single row needs to be extended.)
Horizontal Installation：60 type PV module cable length ≥1.2m, 72 type PV
module cable length ≥1.4m

07
Junction Box Location Icon Recommended Wiring Method
Vertical Installation: Standard Cable length：
Note：The extra extended cable is required for connection at the turn-back
corner of wiring as shown below.
Horizontal Installation:
60 type PV module cable length ≥1.2m, 72 type PV module cable length
≥1.4m, 78 type PV module cable length ≥1.5m
Vertical Installation:
Method 1: Standard cable length Method 2: Single component cable
length ≥1.2m
Horizontal Installation：Standard cable length

08
The application level of LONGi Solar module is Class Ⅱ, which can be used in systems operating at > 50 V DC or >240
W, where general contact access is anticipated;
When the modules are for rooftop application, it is necessary to take the overall fire rating of the finished structure as well
as operation and maintenance into account. The roofing PV system shall be installed after being evaluated by construc-
tion experts or engineers and with official analysis results for the entire structure. It shall be proved capable of supporting
extra weight of system racking structures and PV modules.
For your safety, please do not work on the roof without PPE(Personal Protective Equipment) which include but not limited
3.3 Regular Safety
Figure 3 Junction Box Style and Wiring Method
to fall protection, ladder or stair and personal protective measures.
For your safety, please do not install or handle modules in unsafe conditions including but not limited to strong wind or
gust, damp or sandy roofs.
Junction Box Location Icon Recommended Wiring Method
Vertical installation:
Method 1: Standard cable length Method 2: Single component cable
length ≥1.2m
Horizontal Installation: Standard cable length

The application level of LONGi Solar module is Class Ⅱ, which can be used in systems operating at > 50 V DC or >240
W, where general contact access is anticipated;
When the modules are for rooftop application, it is necessary to take the overall fire rating of the finished structure as well
as operation and maintenance into account. The roofing PV system shall be installed after being evaluated by construc-
tion experts or engineers and with official analysis results for the entire structure. It shall be proved capable of supporting
extra weight of system racking structures and PV modules.
For your safety, please do not work on the roof without PPE(Personal Protective Equipment) which include but not limited
09
PV modules can produce DC current under sunlight. Any contact of exposed metal at module's wiring parts may result in
electrical shock or burn. Any contact of 30V or larger DC Voltage can be fatal.
In case of no connected load or external circuits, modules can still produce voltage. Please use insulation tools and wear
rubber gloves when operating modules in the sunlight.
No switch is on the PV modules. Operating of PV modules can only be stopped when they are kept from sunlight or covered by
hard board or UV-proof materials or when the angle of the modules facing sun are placed on smooth and flat surfaces.
To avoid electric arc or electric shock hazards, please do not break down electric connection in loaded conditions. Incorrect
connections will also lead to electric arc or shock. Keep connectors dry and clean and make sure that they are in good
operating condition. Do not insert other metals into the connectors or carry out electric connection by whatever means.
Snow, water or other reflective medium in surrounding environments that intensify light re-flection will increase output current
and power. And module voltage and power will increase under low temperature condition.
If module glass or other sealing materials are damaged, please wear PPE(personal protective equipment) and then isolate
modules from the circuit.
Do not operate when modules are wet unless you wear PPE(personal protective equipment). Please follow the cleaning
requirements in this manual when cleaning modules.
Do not contact connectors with the following chemicals: Gasoline, White Flower oil , woodlock oil, Mold temperature oil, Engine
oil （such as KV46）, Grease（such as Molykote EM-50L）, Lubricating oil, Rust-proof oil, Stamping oil, Diesel, Cooking oil,
Acetone, alcohol, essential balm, Bone-setting liquid, Banana oil, release agent（such as Pelicoat S-6）, adhesive and potting
materials capable of generating oxime gas（such as KE200、CX-200、chemlok）, TBP, cleaning agent etc.
3.4 Electrical Performance Safety
3.5 Operation Safety
to fall protection, ladder or stair and personal protective measures.
For your safety, please do not install or handle modules in unsafe conditions including but not limited to strong wind or
gust, damp or sandy roofs.