Goodwe PVBM User manual

INSTALL ATION
MANUAL
GOODWE PVBM
UP TO A SUSTAINABLE FUTURE
GOODWE TECHNOLOGIES CO., LTD. [email protected]m
GALAXY ULTRA WITH TPO SQUARE TUBE
BMT-G3/088A
GoodWe PV Building Material Installation Manual – 20230906 Information presented is subjected to change. GoodWe reserve the final right for explanation on any of the information presented hereby.

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CONTENT
1
2
5
8
9
4
7
3
6
DESCRIPTION OF THE
MAIN STRUCTURE OF
GALAXY LIGHTWEIGHT
PRODUCTS
INSTALLATION
MATERIALS LIST
INSTALLATION
WORK OF GALAXY
LIGHTWEIGHT
PRODUCTS
OPERATION AND
MAINTENANCE CAUTIONS
PRE-INSTALLATION
INSPECTION WORK OF
GALAXY LIGHTWEIGHT
PRODUCTS
ELECTRICAL
CONSTRUCTION
PROCESS
INSTALLATION TOOLS
LIST
ELECTRICAL
INSTALLATION
P3 P4
P7
P24 P25
P5
P21
P4
P17

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1
DESCRIPTION OF THE MAIN STRUCTURE OF
GALAXY LIGHTWEIGHT PRODUCTS
Front side of Galaxy lightweight product
Installation Altitude <2000m
Fire Protection Level: CLASS C （According to the corresponding ceication standard IEC
61730-2-MST23）
Protection Level:Level II
Maximum Static Load: Front 5400Pa; Back 2400pa
TPO membrane
Junction box

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2.1 GALAXY ULTRA INSTALLATION PACKAGE <IIG0000-05-T0P>
3.1 CONSTRUCTI ON TOOLS LIST
PS：This list only indicates the main tools required for the installation of Galaxy Lightweight
Product structural system, excluding the tools used for the installation of the roof suppo
section and the electrical section. For the tools of release and installation of roof brackets, you
can refer to the preparation of building works.
Suppo Tube
Tape Measure
Adhesive gun
Tape
Chalk Line
Roller
Utility Knife Hot Air Gun
2
INSTALLATION ACCESSORIES LIST
3
INSTALLATION TOOLS LIST

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3.2 ELECTRICAL TOOLS LIST
Needle Nose Plier
Joint Wrench
Wire Cutter Wire Stripping Plier Photovoltaic special crimping pliers
● Please use insulated tools to reduce the risk of electric shock.
● Please adopt appropriate protective measures (non-slip gloves, work clothes, etc.) to
avoid direct contact with 30V DC or higher, and avoid direct contact with sharp edges during
installation
● Please do not wear metal ornaments during installation to avoid poking through the Galaxy
lightweight products and causing electric shock hazards.
● DO NOT install the product in rainy weather or strong wind.
● DO NOT allow children or unauthorized personnel to approach the installation area or the
storage area of Galaxy Lightweight products.
● During installation or wiring of Galaxy Lightweight products, if the circuit breaker and
overcurrent protection circuit breaker cannot be turned on or the inveer cannot be turned o,
then use an opaque material to cover the array Galaxy Lightweight products to stop the power
output.
● DO NOT use or install Galaxy Lightweight products that have been damaged.
● If the suace material is damaged or worn, direct contact with the suace of Galaxy
lightweight products may result in electric shock.
● DO NOT attempt to repair any pa of the Galaxy Lightweight product.
● The lid of the junction box should be kept closed at all times.
● DO NOT disassemble, modify, or move any pa of the Galaxy Lightweight product.
4
PRE-INSTALLATION INSPECTION WORK OF GALAXY
LIGHTWEIGHT PRODUCTS
WARNING

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● Before installing Galaxy Lightweight products, the relevant authorities should be contacted
to obtain information about the installation site and construction permits, and the requirements
for installation and inspection should be obseed.
● Check the applicable building codes to ensure that the building and its structure (roof,
exterior façade, load bearing, etc.) in which Galaxy lightweight products are to be installed
have adequate load-bearing capacity.
● Ensure that Galaxy Lightweight products are installed on a reproof roof.
● Galaxy Lightweight products are compliant with Safety Class II. These Galaxy Lightweight
products can be used in systems where the public is likely to be exposed to voltages greater
than 50V or power greater than 240W.
● The installation suace should be at and free of pits or bumps.
● Galaxy lightweight products must not be installed near ames or combustible objects.
● Galaxy lightweight products must not be immersed in water (pure or salt water), installed in
environments that are permanently wet (pure or salt water) (e.g. fountains, waves, etc.) or in
locations where water is likely to accumulate (e.g. potholes, drainage inlets, etc.).
● There is a risk of corrosion if Galaxy lightweight products are placed in salt spray (i.e., marine
environments) or environments containing sulfur (i.e., sulfur-containing sources, volcanoes,
etc.).
● Ensure that Galaxy Lightweight products meet the overall technical requirements of the
system.
● Ensure that other system components do not cause damaging mechanical or electrical
peormance eects on Galaxy Lightweight products.
● It is allowed to connect Galaxy Lightweight products in series to increase the voltage or in
parallel to increase the current. When connected in series, the positive terminal of the Galaxy
Lightweight product is connected to the next negative terminal. When connected in parallel,
the positive terminal of the Galaxy Lightweight product is connected to the positive terminal of
the next Galaxy Lightweight product.
● To avoid (or minimize) the mismatch eect of the array, it is recommended to connect Galaxy
Lightweight products with similar electrical propeies on the same string.
● To reduce the risk of indirect lightning strikes, the system should be designed to avoid the
creation of loops.
● Galaxy lightweight products should be securely fastened so that they can withstand all
possible loads, including wind and snow loads.
● During the installation process of the Galaxy Lightweight products, it's advisable to minimize
repeated moving and handling.
● Please ensure that the installation location of Galaxy Lightweight products is free from
shading all year round, as shadows can cause a decrease in the power generation of Galaxy
Lightweight products. Hot spots and long-term heat generation from diodes caused by
BE CAREFUL
● DO NOT aicially concentrate light on Galaxy lightweight products.
● It is impoant to note that only one piece of product can be moved in a single operation
when installing the Galaxy products.

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5
INSTALLATION WORK OF THE GALAXY
LIGHTWEIGHT PRODUCT
5.1 UNPACKING AND STACKING (STORAGE AND UNPACKING)
● To ensure the safety of Galaxy Lightweight Products during transpoation, it is better to
open the packaging box of Galaxy Lightweight products after reaching the installation site.
● Check whether the box is damaged before unpacking.
● It is advised that unpackers wear non-slip gloves in advance.
● Galaxy Lightweight Products should be stored in a d and ventilated environment.
● Galaxy Lightweight Products must be shipped in the boxes provided by GoodWe and should
be stored in the original boxes before installation. Please protect the packaging from damage.
Follow the recommended unpacking procedure to open the Galaxy Lightweight product
packaging. Careful handling is required during unpacking, transpoation and storage.
● DO NOT apply excessive loads or twist the Galaxy Lightweight Product.
● DO NOT use wires or junction boxes to car Galaxy lightweight products.
● DO NOT stand, climb, walk or jump on the Galaxy Lightweight Product.
● DO NOT to allow the Galaxy Lightweight Product to come in contact with sharp objects;
scratches can directly aect the safety of the Galaxy Lightweight Product.
● DO NOT place the Galaxy Lightweight Product in an environment that is not reliably
suppoed or not xed.
● Changing the wiring of the bypass diode is prohibited.
● All electrical connectors need to be kept clean and d.
● Please avoid stacking Galaxy lightweight products atly. If stacking is necessa, buer
foams should be added between the products as a cushion. The junction box must not be in
direct contact with the glass suace.
5.2 CHECKING
● Please check whether the suace of the Galaxy Lightweight Product is damaged, if there is
damage or wear on the suace of the products, please do not use the product.
● Please check whether the junction box, connectors and cables are damaged. Please do not
use the product if there is damage.
● Do NOT apply adhesives, paint, label or any other product on the suace of Galaxy
Lightweight products.
5.3 ROOF SUBSTRATE REQUIREMENTS
frequent shading of Galaxy Lightweight products can aect the seice life of Galaxy
Lightweight products.

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● The application scenarios of the base layer include colour steel tile roof and at roof，and the
substrate needs to be laid with TPO membrane.
● The suace of the substrate should be uniform, at and without sharp bumps or burrs, etc.
● The substrate in direct contact with the TPO membrane must be compatible with the
membrane, clean, d and free of oil stain.
5.4 CONSTRUCTION REQUIREMENTS
● The recommended temperature for welding TPO membrane with a handheld welding gun
is 360-400℃ . Specic welding parameters should be determined based on on-site voltage,
temperature, weather conditions, etc., and peel tests should be peormed to verify the
bonding reliability.
● Operating ambient temperature: TPO membrane can only be applied in locations where the
average monthly temperature is ranging from -50℃ to +50℃
● Construction ambient temperature limits:
① -10° C to +60° C for ambient construction
② >5° C for contact adhesives/cleaners etc.
③ It may be mandato to take measures to ensure safety when working at ambient
temperatures below 5° C as required by relevant national codes.
5.5 CHALK LINE POSITIONING
● Measure the roof and determine the position of Galaxy lightweight products according to
the design drawings.
5.6 CARRYING
To avoid damaging the cells, two people are required to lift the four corners of the Galaxy
Lightweight product (avoiding touching the position of the cells) at the same time when
caring it.
● The downward bending distance of Galaxy lightweight products should not exceed 300mm.
Please carefully position Galaxy into predestined location.
● Galaxy lightweight products should be carried upright as much as possible when handled
manually. Do not twist the product during transpoation and avoid front-facing products.
● Care is required during the handling of Galaxy lightweight products to avoid them bumping
into the ground or other sharp, hard objects.
5.7 INSTALLATION
Installation on colour steel tile roong with TPO membrane:
● Apply adhesive on the colour steel tile roof with TPO membrane( excluding the welding
area), with a maximum spacing of 400mm between the adhesive ribs. The structural adhesive
should have a cross-section width of more than 8mm and a height of more than 6mm. The four
corners of the Galaxy lightweight products should be held by two workers. Lift it veically and

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then bond it to the colour steel tile roof with the front side facing up.( as Figure 1)
FIGURE 1
● Gently press the front side of the product with a exible tool so that the product can be
rmly bonded to the rib of colour steel tile.
● Lift the TPO side of the Galaxy lightweight product lightly and then use the hot air welding
gun to x the product on colour steel tile roof by spot welding.
TPO membrane Structural adhesive Color steel tile
Galaxy Lightweight Product
Hot air welding gun
Color Steel TileSpot welding
TPO membrane Galaxy Lightweight Product
● After xing the TPO membrane of the Galaxy lightweight products on both ends, use the
hot air welding gun along the TPO membrane for full welding. Use rollers to gently press the
TPO membrane（As Figure 3）to ensure that the TPO membrane is secured to at roong. The
eective welding width of TPO membrane on both ends of the product should be at least
25mm. If the welding area is covered on the valley of the colour steel tile, the valley needs to be
lled in to be ush with the rib of colour steel tile for full welding. (as Figure 4, 5)
FIGURE 2

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Hot air welding gun
Colour steel tile
TPO membrane Roller Galaxy Lightweight Product
FIGURE 3
Fill the valley
Fill the valley
Rib of colour steel tile
Rib of colour steel tile
TPO membrane Galaxy Lightweight Product
Galaxy Lightweight Product
Valley of colour steel tile
Valley of colour steel tile
slope of colour steel tile
Slope of colour steel tile
FIGURE 4
FIGURE 5
≥ 25mm
≥ 25mm

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● The distance between Galaxy Lightweight products is 30±10mm. For areas with junction
boxes, a 300mm inspection channel should be reseed between two rows of Galaxy
Lightweight products. For areas without junction boxes, a 170mm inspection channel should be
reseed between two rows of Galaxy Lightweight products. ( Figure 6)
FIGURE 6
300mm 170mm
30mm
TPO at roong installation method:
●First position 4 suppo tubes under each galaxy lightweight product. The center of the outer
suppo tube should be 425mm from the edge of the product glass, and the center of the inner
suppo tube should be 425mm from the center of the adjacent suppo tube with a tolerance
of ±5mm (Figure 7)
● 300mm construction access should be reseed between Galaxy lightweight product arrays
on the junction box side and 170mm construction access should be reseed between Galaxy
lightweight product arrays on the non-junction box side (Figure 7).

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● 6 suppo tubes should be welded on the TPO roof base. The length of eve suppo tube is
3200mm and the size of welding area is 25x25mm with a distance of 640mm between welding
spots. （Figure 8）；
FIGURE 7
FIGURE 8
Edge of glass
Suppo tube central line
Product
Substrate
Welding area
640mm
170
425 425
300 425 425

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Tape
Substrate
Suppo tube
● Apply Tape to the central top area of the suppo tube. The length of the rubber is 767mm. The
lengthwise distance from the edge of the suppo tube is 5 mm and the spacing between the rubbers is
40 ± 10 mm which is consistent with the veical spacing between products. (Figure 10).
767mm
5mm
40±10mm
FIGURE 9
FIGURE 10

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● Two workers grab the four corners of the Galaxy Lightweight product, car them veically and then
bond the back of Galaxy Lightweight products on suppo tubes, with the center of the inner suppo tube
425mm away from the center of the outer suppo tube in the length direction, and the center of the outer
suppo tube 425mm away from the edge of the glass with a tolerance of ±5mm (as shown in Figure 11) ,
and the width of the product 5mm away from the edge of the tape on the same side (as shown in Figure
12). Use a exible tool to gently press the front of the product so that the tape is fully bonded to the back
of the product.
Edge of glass
Edge of product Tape
Galaxy lightweight product
425mm 425mm 425mm
FIGURE 11
FIGURE 12
5mm

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● Lift the Galaxy lightweight product slightly at both ends of the TPO membrane and use a hot air
welding gun to spot weld rst to x the product to the roof.（Figure 13）；
● After xing the TPO membrane on both ends of the Galaxy lightweight products, use the hot air
welding gun along the membrane for full welding. Use rollers gently on the membrane roll pressure when
welding (as Figure 14) to ensure that the TPO membrane is secured to at roong. The eective welding
width of the TPO membrane on both ends should be at least 25mm.(as Figure 15, 16)
Hot air welding gun
Hot air welding gun
TPO membrane
TPO membrane Roller
Spot welding Galaxy lightweight product
Galaxy lightweight product
FIGURE 13
FIGURE 14
FIGURE 15
FIGURE 16
≥ 25mm
≥ 25mm

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● Repeat the installation procedure for the rst product until all products have been installed in the rst
row. (Figure 17)
Galaxy lightweight product
Suppo tube Tape
FIGURE 17

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300mm 170mm
30mm
● Repeat the above steps for each row of products until all the products have been installed. (Figure 18)
6
ELECTRICAL INSTALLATION
6.1 ELECTRICAL PERFORMANCE
● The nominal values of electrical peormance parameters such as Isc, Voc and Pmax of
Galaxy Lightweight products have an error of ±3% from those under standard test conditions.
Standard test conditions for Galaxy Lightweight products: irradiance 1000 W/m2, cell
temperature 25° C, atmospheric mass AM 1.5.
● When Galaxy Lightweight products are connected in series, the total voltage is the sum of
voltage of eve single Galaxy Lightweight product in the string, and when Galaxy Lightweight
products are connected in parallel, the nal current is the sum of the current of eve string of
Galaxy Lightweight products, as shown in Figure 19. Galaxy Lightweight products of dierent
electrical peormance models should not be connected in one string.
FIGURE 18

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● The maximum number of single strings of Galaxy Plus products that can be connected in series must
be calculated in accordance with the requirements of local electrical requirements and regulations. and
the value of its open-circuit voltage at the lowest expected local temperature conditions must not exceed
the maximum system voltage value specied for Galaxy Plus products (maximum system voltage for the
products is DC1000V/DC1500V - the actual system voltage is designed according to the selection of the
product models and inveers) and other values required for DC electrical components.
● The open circuit voltage correction factor can be calculated with the following formula:
CVoc=1-βVoc×(25-T)
where T is the minimum ambient temperature expected at the system installation location and β(%/° C)
is the temperature coecient of the open circuit voltage of selected Galaxy Plus product (refer to the
corresponding Galaxy Plus product parameter table).
● If a reverse current exceeding the maximum fuse current of the Galaxy Plus product may pass through
the Galaxy Plus product, an overcurrent protection device of the same size must be used to protect
the product. If the number of parallel connections is more than or equal to 2 strings, there must be an
overcurrent protection device on each string of the products, as shown in Figure 19.
6.2 CABLE AND CONNECTING WIRES
● Galaxy Plus products shall be connected by using IP67-rated junction boxes, which shall
provide safe protection for the conductors and their corresponding connections, and accessible
protection for non-insulated live pas. The junction box consists of a connected cable and
IP67-rated connectors to facilitate a series connection between Galaxy Plus products. A single
product has two separate wires connected to two separate junction boxes, one positive and
one negative. Two Galaxy Plus products can be connected in series by inseing the positive
connector into the socket of the negative connector of the adjacent product.
● Use dedicated solar cables and appropriate connectors (wires should be encased in age-
resistant conduit or, if exposed to air, should be age-resistant themselves) and ensure that
the cables are electrically and mechanically sound, in accordance with local re, building and
electrical codes. Installers should only use single-core solar cables, 2.5-16mm2 (5-14 AWG),
90° C rated, with appropriate insulation to withstand the maximum possible system open
circuit voltage (as approved by EN 50618). Appropriate wire sizes need to be selected to
minimize voltage drop. All wiring and electrical connections comply with the requirements of
the appropriate National Electrical Code or standard. Avoid mechanical damage to the cable
or Galaxy Plus products when the cable is secured to the bracket. Do not press the cable with
FIGURE 19 SERIES-PARALLEL ELECTRICAL DIAGRAM

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FIGURE 20 MINIMUM BENDING RADIUS OF THE CABLE
6.3 CONNECTOR
● Please keep the connector d and clean, and make sure that the nut of the connector is
tightened before connecting. Do not connect the connector when it is wet, diy or in other
unfavorable conditions. If the connector is not connected properly to the other polarity, the
connector is not waterproof. It is necessa to connect or take appropriate measures to avoid
the inltration of water vapour and dust as soon as possible after the module is mechanically
installed on the roof. Avoid having connectors exposed to direct sunlight and immersed in
water. Avoid having connectors falling on the ground or the roof. Incorrect connections may
produce arcing and electric shock. Make sure all electrical connections are secure. Make sure
that all connectors with locking are fully connected.
● It is not recommended that connectors of dierent models be connected and used together.
6.4 BYPASS DIODE
● The cell strings within a solar module are protected by bypass diodes in parallel and
encapsulated in a junction box. When a hot spot phenomenon occurs locally in a module, the
diode will activate so that string current no longer ows from the hot spot cells, thus limiting
module heating and peormance loss. Note that the bypass diode is not an overcurrent
protection device. Contact the installer or system maintainer when a diode failure is detected
or suspected. Do not attempt to open the module's junction box by yourself.
6.5 ELECTRICAL REQUIREMENTS FOR THE INSTALLATION OF GALAXY LIGHTWEIGHT
PRODUCTS
Inspection before installation
● No visible defects.
● Models and specications should meet the requirements of the design drawings.
● Accessories and spare pas are available;
Preparation of main tools
● Multimeter: For measuring the open-circuit voltage of Galaxy lightweight products.
● Angle measuring instrument, level, etc.: measuring the installation angle of the Galaxy
lightweight product array.
force. The cable shall be secured to the bracket by specially designed aging-resistant cable ties
and wire clips. Although the cable is resistant to aging and water, it should be protected from
direct sunlight and rain. The minimum bending radius of the cable should be 43mm.

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● Installation tools and spare pas are covered in Section 3.
6.6 MATERIAL PREPARATION
Please check whether the type and quantity of the arriving material is correct against the
material list in the conguration sheet.
Galaxy Lightweight Products Electrical Wiring Requirements
● Wiring with clear, unambiguous and easily understood wire number identication.
● Jumper cable diameter must exceed the original Galaxy lightweight product cable diameter,
and ame retardant and insulation peormance should also be no less than that of the Galaxy
lightweight product cable.
● Galaxy lightweight products should be connected to each other in the shoest cable run
possible.
● When Galaxy lightweight products require long straddle connections, t to minimize the
dierence in the total length of each set of string-connected cables.
● The wiring terminals should be in good contact. When connecting each pa of the
Galaxy lightweight product in series, it is best to test once each section is completed with a
multimeter-to-string connectivity.
Electrical wiring method of Galaxy lightweight products
● Wiring in accordance with the wiring in the electrical schematic.
● For products connected in series, the "+" pole of one product is connected to the "-" pole of
another product.
● Extension cables are required if the connection of products between dierent rows is
needed. Please use extension cables that are for solar applications specically. (Figure 21)
FIGURE 21 PRODUCT JUMPER CONNECTION OPERATION INSTRUCTIONS (FRONT VIEW)
＋
-
Galaxy product
serial wireroof substrate
Extension cable