Installation Manual for LONGi Solar Modules 1000V Photovoltaic Modules Safety Notes This manual elaborates on installation and safety use information for Solar power generating modules (hereinafter referred to as module) of LONGi Green Energy Technology Co., Ltd.. (hereinafter referred to as LONGi Solar). 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.
Contents 1 Introduction ................................................................................................................................................ 3 2 Laws and regulations ................................................................................................................................... 3 3 General Information .................................................................................................................................... 4 3.1 3.2 3.3 3.4 3.
1 Introduction Thank You for Choosing LONGi Solar PV Modules! This installation manual includes important electric and mechanical installation instructions. Please understand these instructions before installing LONGi modules. In addition, this manual also contains some safety instructions that you have to know. All contents in this manual are intellectual properties of LONGi Solar which originates from the long‐term technical exploration and accumulated experience.
the local authorities for specific clauses. 3 General Information 3.1 Module Identification Each module is pasted with 3 labels providing information as follows: 1. Nameplate: It describes product type, standard rated power, rated current, rated voltage, open circuit voltage, short circuit current under testing conditions, certification indicator, maximum system voltage, etc. 2. Current Level Label: Divide modules as per the maximum current into 3 levels: H, M or L (H is the highest current level).
1. Aluminum Frame 2. PV Tempered Glass 3. EVA 4. Solar Cell 5. Back Sheet 6. Silica Gel 7. Junction Box 8. Nameplate 9. Cables 10. Connector 11. Mounting Hole 12. Grounding Hole 13. Drainage Hole 14. Solar Cell Figure 1. Module Section Structure and Components 3.2 Regular Safety The design of LONGi Solar modules conforms to the IEC 61215 and IEC 61730 standards and its application level is rated as Class A.
but not limited to strong wind or gust, damp or sandy rooftops. 3.3 Electric Performance Safety Solar modules produce DC electricity in the sunlight, so there will cause hazards such as electric shock or burning when the module cables or metals are touched by human or animals. 30V DC voltage or higher voltage can be fatal to human or animals. In case that no load or external circuit is connected, the modules will also produce voltage.
Do not exceed the tier limitation indicated on the packaging cartons when stacking up modules. Put packaging cartons in the ventilated, rain‐proof and dry places before unpacking modules. Open LONGi’s packaging carton as per unpacking instructions provided by LONGi Solar. Do not hold the junction box or cables to lift the entire module in any case. Standing or walking on modules is strictly prohibited. Do not drop one module onto another module.
connectors as per local laws or regulations. Please do not use modules if there are exposed inflammable gases nearby. 4 Installation conditions 4.1 Installation site and working environments The modules can only be used on earth but not in outer space. Do not focalize the sunlight with mirrors or magnifying glass onto modules.
LONGi Solar modules have passed IEC61701 salty mist corrosion test, but the corrosion may occur at the joints connecting the module frame and the mounting system or grounding joints. LONGi modules can be installed less than 500mm but more than 50m from the seaside but stainless steel or aluminum shall be applied to contact solar PV Modules. And anti‐corrosion protection shall be furnished for installation joints. See the installation requirements in Seaside Installation Instructions by LONGi Solar. 4.
materials. Modules shall be fixed on the mounting system firmly. Use the elevated mounting systems in places with heavy snow so the lowest point of modules shall not be covered by snow for a long time. In addition, make the lowest point high enough so as to avoid shading of plants and plants or damage by blowing sands and stones.
5.2.1 Install Modules through Mounting Holes Make use of bolts to fix modules on the mounting system through mounting holes on the back of the frame. See details in Figure 2. PV module Bolt Flat Washer Flat Washer Spring washer Nut Figure 2 Installation Method Accessories recommended as follows: 1. Bolt 2. Washer Material: stainless steel Material: stainless steel Dimension and length: M6*16mm, M8*16mm Dimension: M6,M8 3. Spring washer 4.
surface of the clamp contacting the front side the frame shall be even and smooth. Otherwise, the frame and module may be damaged. Make sure that the clamp will not produce any shading effect. Drain holes shall not be blocked by the clamp.
5.2.3 Positions of Fixing Points Low/normal loading conditions apply to most environments: the maximum static pressure on the backside of the module is 2400pa (equal to wind load) and the maximum static pressure on the front side is 2400pa (equal to wind load and snow load).
Low/normal loading conditions apply to most environments: High loading conditions apply to severe environments (such as wind storm, heavy snow): Mounting hole Mounting hole Mounting by bolts through mounting holes Use 4 Mounting holes Use 4 Mounting holes Clamping on long side Clamping on short sides Embedded mounting of frame Figure 4 Position of Fixing Points en.longi-solar.com LONGi Solar Technology Co., Ltd.
6 Electric installation 6.1 Electric performance The electric performance parameters of the module, such as Isc, Voc and Pmax (nominal values) have ±3% tolerance with those under the standard testing conditions: irradiance of 1000 W/m2, cell temperature of 25℃ and AM (air mass) 1.5; In normal conditions, the current and voltage values produced by the module are a little bit higher than those under standard testing conditions.
Diode Overcurrent protector Connector Figure 5: Series Connected and Parallel Connected Circuit Diagrams The number of modules in series connection in each string shall be calculated as per the relevant regulations. The Voc value at the lowest estimated temperature shall not exceed the maximum system voltage stipulated for modules (LONGi Solar module’s maximum system voltage is DC1000V according to IEC61730 safety test) and the values required by other DC electric parts.
The module connecting cables shall withstand the maximum short circuit current of the module. The special sunlight resistant cables for solar PV systems shall be used. The minimum standards of module connecting cables are as: Testing Standards Cable Diameter Temperature Range TÜV 2 PfG 11694 4mm2 ‐40ºC to +90ºC When cables are fixed on the mounting system, it shall avoid mechanical damage to cables or modules. Do not press cables with force.
7 Grounding In design of modules, the anodized corrosion resistant aluminum frame is used for rigid support. For safety and protecting modules from damage by lightning and static electricity, the module frame shall be grounded. The grounding device shall be in full contact with inner side of the aluminum frame and penetrate the oxidized coating on the frame surface. Do not drill additional grounding holes on the module frame.
Grounding Clamp Grounding Wire Frame Mounting Push in the direction Wire Slot Grounding Wire Frame Fasten the bolt on the base Keep the base and frame in parallel Grounding wire is at the slot’s bottom. Cover the base and clamp the grounding wire firmly. Figure 6 Installation of Grounding Clamp Note: TYCO. 1954381‐1 (recommended) is used in the above figures 7.
Locking nut Tooth washer Frame Fixing end of grounding clamp Grounding wire Grounding bolt Securing bolt for the grounding wire Figure 7 Installation Method 7.3 Other Third Party Grounding Devices The third party grounding devices can be used for grounding of LONGi Solar modules but such a grounding installation shall be proved to be reliable. The grounding devices shall be operated as per instructions of the manufacturer.
use wet sponge or soft dust cloth containing water to wipe the glass surface. Do not use cleanser containing acid and alkaline to clean modules. 8.2 Inspection of Module Appearance Check module appearance defects visually, especially: 1. Cracks on the module glass. 2. Corrosion at welding joints of the solar cells’ bus bar: it is caused by water vapor ingress into the module due to damage of encapsulating materials during transportation or installation. 3.
