LGXXXN3K-V6 PV Solar Module Installation Guide

LGXXXN3K-V6 PV Solar Module

SAFETY

The instructions related to the safety indicated in the following are for preventing unexpected danger or
damage in advance by safely and exactly using the product.

DANGER Non-compliance of the instructions may immediately cause serious injury or death.
WARNING Non-compliance of the instructions may cause death or serious injury to the user.
CAUTION Non-compliance of the instructions may cause injury or property damage to the user.

DANGER
Do not contact electrically active parts of the panel, such as terminals, without appropriate safety gear. Contact may result in lethal spark or electric shock.
Do not use or install if the module is broken or torn. Failure to comply may result in electric shock.

WARNING

• Perform all work in dry conditions and use only dry tools. Do not handle wet panels without appropriate protection equipment. Failure to comply may result in accident or death.
• Damaged modules must be treated with safety protection equipment. Failure to comply may result in serious bodily injury or death.
• Do not approach the damaged or broken module unless you are an authorized or qualified expert. Failure to comply may result in serious bodily injury or death.
• No electrical parts like cables are located after installation between laminate and mounting structure.
• Do Not reconnect or repair junction box cable. It may occur spar k or electric shock.
• Do not bending junction box’s cable. While under stress, it may occur module damage. Cable bending radius should be more than 4 times the cable diameter, at least.

CAUTION

• Packaged modules should be stored in a cool and dry place. The module packaging is not water-weatherproof.

• If stored for a long time in an uncontrolled environment, it can cause discoloration problems of solar module.

• Use proper equipment, connectors, wires and buttresses for the installation of the module. Failure to comply may result in product damage, product failure or bodily injury.

• Installation during rain, heavy wind or snowy day may result in bodily injury or death.

• Holes in the frame or glass of the module may decrease the strength of the frame or break the glass.

• Do not touch the glass surface or frame of the solar module after installation of the module. It may result in injury or death.

• Heavy objects must be kept off of the solar module.

• Do not stand on or step on the module. Do not drop the module. Failure to comply may result in product damage, product failure or bodily injury.

• Do not scratch the coating surface of the frame.
  Scratches may decrease the total solar output due to corrosion of the frame.

• Do not artificially concentrate unlight on the solar module surface. Failure to comply may result in product damage or failure.

• Do not apply a shock to the junction box of the module or pull the cable. Do not remove the labels attached to the module.
  Failure to comply may result in damage of the product.

If the installing modules on curved surface, (e. g. arch type), as shown in the below picture, do not forcefully modify the module in the installation when connecting it with the structure. Only install the module in the place where the structure for the panels has been properly set up. An improper structure may cause deformation of the panels. Panels may also be damaged by unapproved installation methods such as the use of a crane.

Partial shadow must be removed from solar module because it can cause severe problems of solar module.
The dark colors of the solar modules can vary depending on the manufacturing processes vary and have no influence on the quality and performance of the solar module.

BEFORE & AFTER INSTALLATION

Before Installation
Please carefully read this manual before installation.

• Solar module installation and maintenance must be performed by qualified and authorized installer.

• All installation instructions should be read and understood before performing any installation.

• Do not touch the solar module with bare hands.
  It may result in a burn or injury.

• Do not disassemble the solar module.

• After installation or repair, check that the solar module are operating properly.

• In the event that the currently used solar module or parts have been replaced the newly replaced module and parts must have the same model name and parts as the previously installed solar module.

• In the case of a different model name replacement, it is possible to replace an equivalent or higher electrical characteristic model with in 80% of the maximum voltage of the system.

• Do not let anyone approach the solar module who has lit tle knowledge of solar modules or on the measures to take when solar modules are damaged in order to avoid the risk of injury or electrical shock.

• Secure all necessary permits and licenses to install the solar modules.

• Do not locate the solar module horizontally, as this may cause dirt or white efflorescence(glass deformation).

• Panels are not intended for use indoors or on moving vehicles of any kind.

• Industry standard rated specifications are made at conditions of 1000W/m2 irradiance and 25°C (77°F) solar cell temperature. Colder temperatures may substantially increase voltage and power.

• Keep the solar module and system away from children at all times.

• Keep the module packed in the carton until the time of installation.

• Keep flammable gasses away from the installation site.

• Do not work alone. Please work as part of a team of two or more people.

• Safety harness use is strongly recommended for installation.

• Be careful not to damage the cable when using a tool such as a knife to remove the cable tie that fixes the junction box cable.

• Partial shadowing may substantially reduce panel and system output and maybe the reason for the damage of solar module.

• Care must be taken to avoid low tilt angles which may cause dirt to build up on the glass against the frame edge.

• Dirt build-up on the surface of the panel may cause active solar cells to be shaded and electrical performance to be impaired.

After Installation

• Plug in the connector tightly and ensure that the wiring properly works.
• Conduct periodic inspection of the panels for damage to front glass, back sheet, frame, junction box, or external electrical connections.
• Check electrical connections for loose connections and corrosion.
• PV panels can operate effectively without ever being washed, although removal of dirt from the front glass can increase output.
• Water, ethanol or a conventional glass cleaner with a micro-fiber cloth can be used for regular washing or rinsing of the front glass to remove dust, dirt or other deposits.
• Do not use groundwater containing calcium carbonate components when cleaning glass.
• Aggressive and abrasive cleaners or chemicals such as alkali chemicals including ammonia-based solution should not be used on cleaning the module.
• Always keep the back surface of the panel free from a ny foreign objects or structural elements which could come into contact with the panel, especially when the panel is under mechanical load.
• Deposits of foreign material on the frame surface can be cleaned by using a wet sponge or cloth and dried in air or by using a clean chamois.
• Perform the wiring work by connecting the connector and wires to the stand away from the roof or ground.
• Do not use any kind of oil or lubricant on the module’s any parts, It can defect the PV Module.

ELECTRICAL INSTALLATION

Caution

• Avoid all electrical hazards when installing, wiring, operating and maintainingall panels.

• Do not connect panels that have different electrical properties or physical configurations in the samesy stem.

• Match the polarities of cables and terminals when ma king the connections; failure to do so may result in da mage to the panel.

• When reverse currents can exceed the value marked on the name plate, a properly rated and certified over
  – current device(fuse or circuit breaker) must be connected in series with each panel or string of panels.1

• The rating of the over-current device shall not exceed the maximum series fuse rating marked on the name plate.

• The panel contains factory installed bypass diodes located inside the junction box.

• When installing the system, it is recommended to install a lightning rod to protect the system.

• The induced overvoltage by lightning can cause the system damage, you should design conductor loop connection as minimum as possible.

• The junctionbox should not be opened. Opening the junction box will void the warranty.

• Panels with a suspected electrical problem should be returned to LG Electronics for inspection and possible repair or replacement as per the warranty conditions provided by LG Electronics.

Electrical Connections

• Shock hazard may occur near the solar modules electrical connections.
• Modules may be connected in series and/or parallel to achieve the desired electrical output as long as it is within the guidelines on the product specification sheet.
• Please use only the same type of modules in a combined source circuit.
• Do not disconnect the module under when it is operating. Shock hazard may occur near the solar modules connection means.
• When the module installing in series or in parallel (e.g. using for extension cables, etc.), the connector of each module should be the same products. (mated with its original female or male connector of the same supplier)

Diodes
All LG modules are equipped with factory installed bypass diodes. The factory-installed diodes provide p roper circuit protection for the module from unexpected shadows.

Series Connection

• The solar modules may be wired in series to produce the desired voltage output.
• The current of each module connected in series should be the same.
• The maximum number of series connected modules can be determined by basis of maximum system voltage, the 125% safety factor, and the module Voc whi ch can be checked in “Product Specifications” in this document.
• The maximum solar module configuration can be found in “Product Specifications”.

Parallel Connection

• The solar modules may be combined in parallel to produce the desired current output.

• When modules are combined in parallel, the total current is equal to the sum of currents from each module.

• The voltage of each module connected in parallel should be the same.

• When connecting plural strings of modules in parallel every series string or solar module must be fused prior to combining with other strings.

• Abide with all applicable federal, state, and local codes for additional fusing requirements and limitations on the maximum number of solar modules in parallel.

• Maximum series fuse rating is refer to “Product Specifications; page 11”.

• Parallel configuration is not limited if proper measures are taken to block the reverse current flow, e.g. fuses f or the protection of the module and cables from over-current for prevention of unbalanced string voltage.

• LG Electronics recommends to take blocking diode for prevention of unbalanced string voltage.

• The reverse current flow in the string may be caused by a module short circuit, incorrect wiring, shadow, etc.

• Blocking diodes must have :

  1. VRRM(Repetitive Peak Reverse Voltage) : 1.5times of maximum system voltage
  2. IF (Average Forward Current) :
     2 times of Isc (PV module short circuit current)
     It is selected in consideration of the thermal characteristics of the diode, and it is recommended to use a component of 30mAor less for IRRM
     (Repetitive Peak Reverse Current, max).

• A multiplying factor is required for increased output of the PV modules. Under normal conditions, a PV module is likely to experience conditions that produce more current and/or voltage than reported at standard test conditions. The requirements of the national electrical Code (NEC) in Article 690 shall be followed to address these increased outputs.
  The values of Isc and Voc marked on this PV module should be multiplied by a factor of 125% when determining component voltage ratings, conductor ampacities, fuse sizes, and size of controls to the PV output.

• Depending on national directives, additional safety factors might be applicable for overcurrent protection.

General Wiring

• LG Electronics recommends that all wiring be double insulated with a minimum rating of 90°C (194°F).
• All wiring should use a flexible copper (Cu) conductor.
• The minimum size should be determined by the applicable codes.
• LG Electronics recommend sa size no smaller than 4mm2.

Earth Grounding

• All work must be conducted in conformance with all Federal, State, and local codes and standards.
• Grounding works should be performed by an authorized installer for the safety and maintenance of the system in accordance with all national, state and local electrical codes and regulations and standards.
• Specific information on the solar module dimensions and location of grounding holes is provided in “Product Specifications”.
• One M4 stainless steel bolt, one nut, one spring washer, two flat washers, one cup washer, one star washer and 12 AWGCu wires are recommended per mounting hole.
• Where common grounding hardware (nut, bolts, washers) is used to attach a listed grounding device, the attachment must be made in conformance with the grounding device manufacturer’s instructions.
• All hardware should be consist of corrosion-resistant material such as stainless steel.
• There is an earth hole on the edge of the module frame. Using this hole, an earth conductor and the solar module frame may be recommended to be connected and earthed as the below drawing.
• All screws and nuts shall be tightened to a torque of 4~5 N∙m.
• To prevent electric shock and fire, a protective ground must be done on the frames of solar modules and arrays although the solar modules from LG meet the conditions of safety class II. The national directives must be respected.
• Bonding points to ground should be tight, secure and free from corrosion. (Maintenance is especially important in areas with high levels of salt in the atmosphere, such as coastal areas and the surrounding seas.)

MECHANICAL INSTALLATION

Module Mounting

• The LG Electronics’ (LGE) Limited Warranty for solar modules is contingent upon modules being mounted in accordance with the requirements described in this section.
• The solar modules are in Application Class A and have Safety Class II. Therefore they can be operated in systems with 120V DC and higher. General access is not restricted.
• We recommend to use mounting device(bolt, nut, washer) made by corrosion resistant material like stainless steel.

Site Consideration

LGE solar modules should be mounted in a location that meets the following requirements.

Module Operating Temperature

• Temperature range : -40°C ~ 85°C (-40°F ~ 185°F)
• The operating ambient temperature of these devices may exceed 40℃at full load for all wire sizes if is determined suitable in the field use application.

Excluded Operating Environments

• The solar modules from LG Electronics can not be operated in a location where they could come in direct contact with salt water or ammonia.
• Do not use module to replace (or partly replace) roofs and walls of living places.

• Ym is a safety factor of 1.5

• Detail of mounting distanceis below.

• This mounting method is by using frame bolt holes.

• The mounting rails must run perpendicularly to the module long side.

Shadow

• LGE solar module should be installed in a proper site that there is no shadowing affected by building, chimney, tree, and neighboring module, etc.
• Use corrosion resistant material mounting rails and hardware.
• Use appropriate bolted connections as per manufacturer’s instructions.
• No electrical parts like cables are located after installation between laminate and mounting structure.
• LGE solar module is qualified up to a altitude of 4000m.

Mounting Methods

General Information

• Select the appropriate orientation to maximize sunlight exposure.
  The module generates maximum output power when it faces the sun directly. The tilt angle of the modules should be selected to optimize seasonal and sunlight

  • based performance in the installation place.

• Module should not be mounted or stored in a way that the front/top glass faces downward in order to prevent water from entering the junction box, which could cause a safety hazard.

• Clearance between the solar module frames and structures such as roofs or ground is required to prevent wiring damage and to allow air to circulate behind the solar module. The recommended standoff height is a minimum of 100mm.

• When installed on a roof, the solar module must be mounted over a fire-resistant roof covering rated for the application. The fire resistance of the solar module is class C after ANSI/UL790 Edition 2004.

• The solar module is only IEC listed for use when its factory frame is fully intact.

• Removal or alteration must be done by an authorized and qualified individual.

• Creating additional mounting holes may damage the solar module and reduce the strength of the frame.

• We recommend a 6mm gap between module frames to avoid tension from thermal expansion.

• The solar module may be mounted by using the following methods: (*Torque:8~12N∙m)

• When installing modules in heavy snow areas, it is recommended to be taken an appropriate countermeasure to prevent possible damages to the lower side frame by slipping snow.

• We recommend to use corrosion-resistant material for these supporting part. (A snow guard should be installed in accordance with the manufacturer’s instructions.)

Mounting by using frame bolts holes

• Secure the solar module to the structure by using the factory mounting holes.
• Four M8 stainless steel bolts, four nuts, four spring washers, and eight flat washers are recommended per solar module.
• The module may be fastened to support by using both the outer and inner bolt holes of the frame.
• Each module should be securely fastened at a minimum 4 points on two opposite sides.
• Specific information and location of mounting holes is provided in ‘Product Specifications.
• Tighten the bolt securely by using the combination. Place the spring washer between the Flat washer and Nut.

Mounting by using clamps

• The module may be fastened to a support by using clamps on both the long edge and the short edge of the modules.
• Specific information on location of clamping is provided in ‘Mechanical Installation Scene’. (Refer to Appendix.)
  • If you use a special clamp, it needs to test for compatibility by LGE.
• If the installation is likely to be affected by heavy(extreme) snow, further suitable panel support is recommended on the lower row of panels.

DISPOSAL

Disposal of your old appliance

1. This crossed-out wheeled bin symbol indicates that waste electrical and electronic products (WEEE) should be disposed of separately from the municipal waste stream. Please dispose of old devices separately from other waste and take them to a designated collection point for electrical and electronic waste. In case the devices contain batteries or lamps that can be readily removable by end-user without damage, please separate them from the main devices before disposing them unless you want the old devices reused (waste batteries and lamps are collected separately).
   Please also note that you are personally responsible for clearing personal information on the device before disposing of your devices.

2. Old electrical products can contain hazardous substances so correct disposal of your old appliance will help prevent potential negative consequences for the environment and human health. Your old appliance may contain reusable parts that could be used to repair other products, and other valuable materials that can be recycled to conserve limited resources.

3. You can take your appliance either to the shop where you purchased the product, or contact your local government waste office for details of your nearest authorised WEEE collection point. Please note that some distributors are obliged: to take back old devices from end-users upon selling new equivalent equipment to them and provide free-of-charge collection for electrical and electronic equipment of very small dimensions(not exceeding 25 cm) without the obligation for end-users to purchase new equipment of an equivalent type. When distributors deliver new equipment to private households, they are obligated to collect old equipment directly from them or to propose a take-back solution in a reasonable distance.
   Therefore, we recommend you to contact your distributor for more information.

4. LG Electronic DeutschlandGmbHis duly registered as Producer in Germany.
   As such, LG contributes to the country-wide collection and recycling of WEEE that you bring to municipal separate collection facility. For the most up to date information please see www.lg.com/global/recycling or https://www.lg.com/de/support/altgeraete-rueckgabe

TRANSPORTING AND STORAGE

• Do not loosen the banding, when the module is transported by truck, ship and etc. In case of loose banding, the module will be shaken, which may cause damage.
• Do not stack on more than one pallet. Maximum height is two pallets. Severe stacking can cause stress to the module and may cause product damage.
• Do not transport only one side of the module when transporting the module. Damage to the frame or cable may occur.
• Packaged modules should be stored in a cool and dry plase. The module packaging is not water-weatherproof. If stored for a long time in an uncontrolled environment, it can cause discoloration problems of solar module.

REVISIONS TABLE

appliance]

This installation manual(Version 2.0) replaces all previous versions except electrical and mechanical characteristics. For electrical and Mechanical characteristics of each model, please refer to the Datasheet for each model.

PRODUCT SPECIFICATIONS

Rated electrical characteristic except power rating within -0/+3 percent are within 5 percent of measured. Values at StandardTest Condition(STC) : Irradiance1000W/m2, Cell temp. 25℃, 1.5AM

Electrical Properties|  |  |  |  |  |  |  | Mechanical Properties|
---|---|---|---|---|---|---|---|---|---

Module Series

|

Model Name

|

Pmax at STC

|

Pmax at  Bifi100

|

Pmax at  Bifi200

|

Power Tolerance

|

Voc at STC

|

Isc at STC

|

Vmpp at STC

|

Impp at STC

| Max. No of Module In series| Max. Series Fuse Rating|

Max. System Voltage

|

Connector

|

Length

|

Width

|

Height

|

Weight

 |  | W| W| W| %| V| A| V| A|  | A| V|  | mm| mm| mm| kg

LGXXXN3C(W)-V6

| LG395N3C(W)-V6| 395| 395.8| 396.6| 0~3%| 44.6| 11.30| 36.3| 10.89| 17| 20| 1000| MC4| 1880| 1042| 40| 19.7
LG400N3C(W)-V6| 400| 400.8| 401.6| 0~3%| 44.8| 11.35| 36.7| 10.90| 17| 20| 1000| MC4| 1880| 1042| 40| 19.7
LG405N3C(W)-V6| 405| 405.8| 406.6| 0~3%| 45.0| 11.40| 37.1| 10.92| 17| 20| 1000| MC4| 1880| 1042| 40| 19.7
LG410N3C(W)-V6| 410| 410.8| 411.6| 0~3%| 45.2| 11.44| 37.5| 10.94| 17| 20| 1000| MC4| 1880| 1042| 40| 19.7
LG415N3C(W)-V6| 415| 415.8| 416.7| 0~3%| 45.4| 11.49| 37.9| 10.95| 17| 20| 1000| MC4| 1880| 1042| 40| 19.7
 | LG390N3K-V6| 390| 391.6| 393.1| 0~3%| 45.0| 11.08| 36.4| 10.72| 17| 20| 1000| MC4| 1880| 1042| 40| 19.7

LGXXXN3K-V6

| LG395N3K-V6| 395| 396.6| 398.2| 0~3%| 45.1| 11.12| 36.8| 10.74| 17| 20| 1000| MC4| 1880| 1042| 40| 19.7
LG400N3K-V6| 400| 401.6| 403.2| 0~3%| 45.2| 11.16| 37.2| 10.76| 17| 20| 1000| MC4| 1880| 1042| 40| 19.7
LG405N3K-V6| 405| 406.6| 408.2| 0~3%| 45.3| 11.20| 37.6| 10.78| 17| 20| 1000| MC4| 1880| 1042| 40| 19.7
 | LG410N3K-V6| 410| 411.6| 413.3| 0~3%| 45.4| 11.24| 38.0| 10.79| 17| 20| 1000| MC4| 1880| 1042| 40| 19.7

Note)

Max.Bifacial Coefficient of Power: N3C(W)-V60.04 /N3K-V60.06
Max.Bifacial Coefficient of Current : N3C(W)-V60.05 /N3K-V60.07
Max.Bifacial Coefficient of Voltage: N3C(W)-V60.88 /N3K-V60.88

Note) For information about the electrical ratings for both front and back surfaces (Bifaciality Coefficient) and the expected contribution from ground reflected irradiance along with ground cover and installation height above ground that reflected irradiance, please refer to the sales talk material and datasheet.

Note) MC4 formal name : PV-KST4 / 6II-UR, PV-KBT4 / 6II-UR
→ Plus (+) Connector : Male MC4 coupler (PV-KST4/6II-UR)
→ Negative (-) Connector : Female MC4 coupler (PV-KBT4/6II-UR)
Note) The Typical change in module efficiency at 200W/m2 in relation to 1000W/m2 is -2.0% / ‘N3K-V6’ is -3.0%

Female and male cable couplers
Female cable coupler

*Electrical Properties(NMOT)**

 | LGXXXN3C(W)-V6|  |  |  |  | LGXXXN3K-V6|
---|---|---|---|---|---|---|---
Model|  |  |  |  |  |  |  |  |
 |  | 395| 400| 405| 410| 415| 390| 395| 400| 405| 410
Maximum Power (Pmax)| [W]| 298| 302| 305| 309| 313| 294| 298| 302| 306| 309
MPP Voltage (Vmpp)| [V]| 34.2| 34.5| 34.9| 35.3| 35.7| 34.3| 34.6| 35.0| 35.4| 35.8
MPP Current (Impp)| [A]| 8.72| 8.73| 8.75| 8.76| 8.77| 8.59| 8.60| 8.62| 8.64| 8.64
Open Circuit Voltage (Voc)| [V]| 42.0| 42.2| 42.4| 42.6| 42.8| 42.4| 42.5| 42.6| 42.7| 42.8
Short Circuit Current (Isc)| [A]| 9.10| 9.14| 9.18| 9.21| 9.25| 8.92| 8.96| 8.99| 9.02| 9.05

• NMOT (Nominal ModuleOperatingTemperature): Irradiance800W/m 2, ambienttemperature 20℃, wind speed1m/s

Temperature Characteristics

Dimensions of Modules

LGXXXN3C(W)-V6/ LGXXXN3K-V6

Frame Cross-section

APPENDIX

Mechanical Installation

Note) All mechanical installation methods and bolting method in this appendix were not tested by VDE.
It is evaluated by LG internal test.

Bolting Method

Clamp system requirements

• Clamp Wdth 2: 4Dm m (1 .57il).
• Clamp height compliant WIil a 40mm (1 .57in) trame height.
• Clamp depth 8–10mm (0 .ll-0.39in).
• The clamp should not be toud1ed with the module’s,-ass.
• Use corrosion-resistant material damps and hardware.
• Use appropriate bolted connections as per damp manufacturer’s instructions.
• Follow the clamp manufacture’s recommended appl ed torque to fasten the clamps.

References

• Suzhou UKT New Energy Technology Co., Ltd.
• 📧service-solar@lge.de
• 📧solar-svc@lge.com
• LG Electronics | LG Germany
• Solar | Business | LG Global
• Electrical connectors and contacts by Stäubli Electrical Connectors AG
• Altgeräterückgabe und Recycling – Support & Hilfe | LG DE

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