REC Alpha 72 Series User manual
rec Alphα72 SERIES
INSTALLATION MANUAL
FOR ALL REC ALPHA SOLAR PANELS CERTIFIED
ACCORDING TO IEC & IEC STANDARDS
RECInstallationManual-RECAlphaSeries -IEC/
Rev A . Ref: NE
CONTENTS
CONTENTS
List of figures
INTRODUCTION
How to use this manual
Your responsibility as an installer
Support
Liability disclaimer
Limited warranty
SAFETY MEASURES
Safety in the working area
PANEL HANDLING
CHOOSING AN INSTALLATION LOCATION
ELECTRICAL INSTALLATION
Electrical requirements
MECHANICAL INSTALLATION
Fire guidelines
Orientation
PANEL INSTALLATION
Rail specifications
Mounting methods: Clamping with rails parallel to the short side
Mounting methods: Slide in systems
Mounting methods: Mounting holes
Drainage holes
CONNECTIONS AND CONNECTORS
CABLE MANAGEMENT
PANEL MAINTENANCE
RECYCLING
DISPOSAL OF OLD ELECTRICAL AND ELECTRONIC EQUIPMENT
PANEL CHARACTERISTICS
Technical Properties: REC Alpha Series
ANNEX : INSTALLATIONS ON WATER PLATFORMS
ANNEX : INSTALLATIONS USING MODULE LEVEL POWER ELECTRONICS
EC DECLARATION OF CONFORMITY
DOCUMENT HISTORY
LIST OF FIGURES
Fig. : Clamp specifications: Mid-clamps
Fig. : Clamping of panels with rails parallel to short side
Fig. : Clamping zones for panels with rails parallel to short side
Fig. : Mounting holes: REC Alpha Series
Fig. : Device specifications for mounting holes: REC Alpha Series
Fig. Mounting hole installation example: REC Alpha Series
Fig. : Drainage and grounding holes
Fig. : Connector mating matrix
Fig. : Minimum cable bend radius
Fig. : WEEE symbol
Fig. : Panel dimensions: REC Alpha Series
Fig. : MLPE device installation zones
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INTRODUCTION
Thank you for choosing REC photovoltaic panels for your installation. REC Alpha Series solar panels are ideal for delivering long-lasting and
reliable power output.They have been created through intelligent design and are manufactured to the highest quality and environmental standards.
With correct installation and maintenance, REC panels will provide decades of clean and renewable energy.
Please read this entire manual carefully. It contains critical information on safety, as well as detailed instructions for the installation, operation and
maintenance of the panels. Failure to follow these procedures will invalidate the warranty (www.recgroup.com/warranty). Review all instructions
and safety notes in this manual before working on the system. Failure to do so may lead to injury or damage to property.
HOW TO USE THIS MANUAL
This manual describes the procedures for the terrestrial installation of all REC Alpha Series solar panels of a ‘-cell size’ certified according to
IEC & IEC standards. This includes all product variants (indicated by the appropriate suffix in the panel name) e.g., a white or black
backsheet. The installed panel is considered to be in compliance with IEC & IEC only when mounted in the manner specified by this
installation manual. Note that any panel without a frame (laminate) is not considered to comply with the requirements of IEC & IEC
unless mechanically installed with hardware that has been tested and evaluated with the panel under this standard or by a field inspection certifying
that the installed panel complies with the requirements of IEC & IEC .
Except where specifically stated, the information and drawings in this manual refer to all frame, backsheet, and cell types; the illustrations are
only a generic representation of the instructions regardless of color or exact design. Throughout the manual, you will see sections which highlight
important information or notes:
YOUR RESPONSIBILITY AS AN INSTALLER
Installers are responsible for the safe and effective installation and operation of the system and for adhering to all applicable local standards
and regulations. Prior to installation installers must check all current regulations and permits concerning solar installations and ensure all local
directives are observed. Furthermore, installers are responsible for the following:
• Only qualified personnel must perform work on photovoltaic systems such as installation, commissioning, maintenance and repairs
• Be sure to follow the safety instructions for all system components
• Ensuring the REC panels are in a suitable condition for use and appropriate for the particular installation and environment
• Using only parts that comply with the specifications set out in this manual
• Ensuring a safe installation of all aspects of the electrical array
• All tools and equipment should be properly maintained and inspected prior to use
As this manual may contain instructions for different product variants, ensure you follow the instructions for the correct product where specified.
SUPPORT
Do not aempt to install REC solar panels if you are unsure of the procedure or suitability. For further support, questions or guidance with your
installation, please call your distributor or contact your REC sales office, which can be found at: www.recgroup.com/contacts.
LIABILITY DISCLAIMER
REC SOLAR PTE. LTD. accepts no liability for the usability and functionality of its photovoltaic panels if the instructions in this guide are not
observed. Since compliance with this guide and the conditions and methods of installation, operation, use and maintenance of the panels are
not checked or monitored by REC SOLAR PTE. LTD., REC SOLAR PTE. LTD. accepts no liability for damage arising from improper application or
incorrect installation, operation or maintenance.This does not apply to damages due to a panel fault, in cases of loss of life, bodily injury or damage
to health or in the event of a grossly negligent breach of obligations on the part of REC SOLAR PTE. LTD. and/or in the event of an intentional or
grossly negligent breach of obligations by a legal representative or vicarious agent. REC reserves the right to make changes or amendments to this
manual at any time, without prior notice.
This document may be produced in different languages. If there is any conflict, the English language version shall be definitive.
LIMITED WARRANTY
The REC Limited Warranty is available to download from www.recgroup.com/warranty. Ignoring any of the instructions in this manual may be
classed as improper installation or use and invalidate the Warranty Terms and Conditions. If you have any questions about installation and the
Warranty validity, please contact REC.
NOTE
Indicates important notes to help with the installation.
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CAUTION
Indicates potential for damage to the array or property.
DANGER
Indicates potential for damage to personal safety.
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SAFETY MEASURES
Installers are responsible for the safe and effective installation and operation of the system and for adhering to all applicable local and national
standards and regulations. All relevant local codes and regulations should be referred to and observed.
SAFETY IN THE WORKING AREA
Installation of REC solar panels may involve working on rooops or raised platforms. Ensure all local regulations regarding working at heights and
fall protection are followed. Before beginning work on an installation, ensure all working surfaces are structurally sound and capable of bearing the
weight of employees and required equipment.
Preventing current generation
To prevent the panels automatically generating current (electricity) when exposed to light, shield the system with a non-transparent cover during
installation, maintenance or repair work.
Specific hazards of DC electricity
The voltage produced by a single panel, and panels connected in series (voltages added together), or in parallel (currents added together) can be
dangerous. Although the fully insulated plug contacts on the panel’s output cables provide touch-safe protection, the following points must be
observed during handling to avoid the risk of sparking, fire hazards, burns and lethal electric shocks:
• Exercise extreme caution when wiring panels and look out for damaged or dirty cables etc,
• Never insert metallic or other conductive objects into plugs or sockets,
• Ensure that all electrical connections are completely dry before assembly,
• Keep all materials, tools, and working conditions dry and tidy,
• Use appropriate safety equipment e.g., non-slip footwear, insulated gloves and insulated tools,
• Solar panels produce current when exposed to sunlight. Do not connect the system to the inverter during solar exposure
DANGER Electrical shock
Solar panels generate direct current (DC). Once current is flowing, breaking a connection (e.g., disconnecting two panels) can cause an electrical
arc.Unlike lowvoltage ACwiring,DC arcsarenotself-extinguishing;they arepotentiallylethalburn and firehazards,capable ofhightemperatures
that can destroy contacts and connectors:
• Isolate the system and remove/open the inverter AC fuse/circuit breaker from the grid before carrying out any maintenance or repair work.
• Follow inverter manufacturer’s installation, handling and operating instructions.
• High-voltage components need sufficient time to discharge.Wait for the time specified by the manufacturer before commencing work.
• Do not use a panel which is broken or damaged. If the panel front glass is broken or laminate back sheet is damaged, it can expose personnel
to hazardous voltages.
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PANEL HANDLING
In order to avoid damage, all REC solar panels should be handled with care and protected from damage at all times. All warnings and instructions on
the packaging should be observed. Follow these guidelines when unpacking, transporting, carrying, installing or storing panels:
• Record the serial numbers prior to installation and note the information in the system documentation,
• Carry the panels using both hands and do not use the junction box or cables as a grip,
• Do not allow the panels to sag or bow under their own weight when being carried,
• Do not subject panels to loads or stresses, e.g., leaning on them or through the placing of weight on them,
• Do not stand or walk on the panels,
• Avoid dropping the panels as any damage caused may be unseen,
• Keep all electrical contacts clean and dry,
• Do not apply force to the backsheet,
• Avoid using sharp or pointed objects if panels require marking,
• Never apply paints, adhesives or detergents to the front or rear of the panel,
• Do not use any solar panel that is damaged or has been tampered with,
• Never aempt to disassemble, modify, or adapt the panels or labels in any way as this will void the warranty.
The pallet packaging is not water- or weatherproof. Prior to installation, and to avoid damage or degradation to the packaging or panel components,
pallets and panels must be stored in a controlled environment, ideally internal, where it is protected from the elements, e.g., rain, dust, and direct
sunlight. If overnight storage in an uncontrolled environment is unavoidable, the panels and the pallet packaging must be protected from direct
exposure to the elements and from contact with the ground, including earth, mud etc.
CHOOSING AN INSTALLATION LOCATION
REC solar panels are designed to provide decades of durable and stable output in installations up to m above sea level. Ambient operating
temperatures must be between -° and +°C.
The panels are not suitable for installation in potentially hazardous locations nor should they be installed in the following locations:
• Near sources of flammable gas or vapor e.g., gas stations, gas containers or spray paint facilities,
• Near open flames,
• Near salt water/spray,
• Under water or in water features,
• Where exposed to sulfur e.g., near sulfur springs or volcanoes,
• Where exposed to artificially concentrated sunlight,
• Where the panels may be exposed to harmful chemicals.
NOTE
Use clean and protective gloves when handling the panel as this will avoid the transfer of any fingerprints or soiling to the highly-sensitive and
anti-reflective glass surface, ensuring improved light transmission and avoiding any contamination.
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NOTE
For further information regarding installations on water platforms, e.g., floating pontoons, see Annex at the rear of this manual.
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ELECTRICAL INSTALLATION
ELECTRICAL REQUIREMENTS
Application Class
REC solar panels are rated for use in electrical Application Class A, Protection Safety Class II; at hazardous levels of voltage (>V), current(>A)
and power (>W) where general contact access is anticipated (panels qualified for safety through IEC - and -).
System Requirements
REC solar panels are only for use where they meet the specific technical requirements of the complete system. Ensure other components will not
cause mechanical or electrical damage to the panels. Only panels of the same type and power class should be connected.
String configuration
Whenconnecting panelsin astring,planandexecuteaccordingtotheinverter manufacturer’sinstructions.Thenumberofpanelsconnectedtoaninverter
must notexceedthe voltagelimits and operating rangepermied bythe manufacturer,nor under any circumstanceexceed the maximum systemvoltage
as stated in the technical specifications for the product at the rear of this manual.The maximum system fuse rating (overcurrent protection rating) and
the maximum reverse current for each panel can be found in the technical specifications for the product at the rear of this manual.
The maximum number of panels in a string can be calculated by dividing the maximum system voltage of the panel by its VOC accounting for the lowest
ambient temperature at site, e.g.: for a V system, if the lowest ambient temperature is °C, the panel has a VOC of . V and a temperature
coefficient of VOC of -./°C, the maximum panels per string is (∆T°C = ° - ° = °; ° x . = .; . + . = .; V/ . = ., so a
total of panels or V). Qualified system designers can make exact calculations that account for specific project requirements and site conditions.
String connection
Panels connected in series must have the same ampere rating. The maximum number of panels that can be connected in series or parallel depends upon
system design, inverter type and environmental conditions. String configuration must correspond to the specifications of other system components e.g.,
inverter. Refer to the reverse current rating of the panel indicated in the technical characteristics at the rear of this manual or on the panel datasheet.
Wiring layout
To minimize voltage surges (e.g., indirect lightning strikes), cables of the same string must be bundled together so loops are as small as possible.
String configurations must be checked before commissioning. If open circuit voltage (Voc) and short circuit current (Isc) deviate from specification,
this may indicate a configuration fault. Correct DC polarity must be observed at all times.
Electrical Ratings
Electrical ratings are within a specific tolerance of measured values at StandardTest Conditions (STC) as given in the technical characteristics for each
panel at the rear of this manual. Allow for increased panel output as a result of conditions different to STC by multiplying the ISC and VOC values by a
factor of . (or according to local regulations) when determining component voltage ratings, conductor ampacities, overcurrent device ratings and
size of controls connected to the PV output.
MECHANICAL INSTALLATION
FIRE GUIDELINES
REC solar panels have a Class C fire classification. Utilize the following fire safety guidelines when installing REC solar panels:
• Check with all relevant local authorities for fire safety requirements for any building or structure on to which the panels will be installed,
• The system design must ensure that it can be easily accessed in the event of a building fire,
• Check with relevant authorities for applicable regulations concerning setbacks or other placement restrictions that may apply for roof-
mounted arrays,
• The use of DC ground fault interrupters is recommended.This may also be required by local and national codes,
• All electrical appliances are a fire risk.The panel must be mounted over a fire retardant roof covering rated for the application and a distance
of at least mm between the panel and the mounting surface, to allow the free circulation of air beneath the panels at all times.
ORIENTATION
Theoptimalmountingpositionof a panel resultsinthesun’sraysfallingperpendicular(i.e.,at°) to the surface.To maximize system output, panels
should be installed at the optimum orientation and tilt angle. The specifics of this depend on location and can be calculated by a qualified system
designer. All panels in a string should, wherever possible, have the same orientation and tilt to ensure the system does not underperform due to
mismatched outputs. Dependent on local conditions, a lower angle of installation will potentially increase the requirement for regular cleaning.
DANGER Electrical shock
Safetyis paramount whenworking on theelectrical installation. Alwaysfollow the electrical requirements to avoid the risk of sparking, fire hazards,
burns and lethal electric shocks.
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PANEL INSTALLATION
REC solar panels are designed for capturing solar radiation and are not suitable for use as overhead or vertical glazing. The IP rating of the junction
box provides a level of protection that allows panels to be mounted in any orientation. There are different options for securing REC solar panels
depending on the design of the array. Mounting hardware is not supplied by REC. Ensure the mounting structure can withstand anticipated wind and
snow loads. Follow the mounting hardware manufacturer’s instructions and recommendations at all times.
Installing the REC Alpha Series solar panels with clamps and rails has been found to comply with IEC & IEC requirements for
downward pressure,e.g., snow, of up to Pa ( Pa design load*) and upward pressure,e.g., wind, of up to Pa ( Pa design load*)
according to the following instructions (*design loads apply a safety factor of . to the stated test load, e.g., test load Pa / . = Pa
design load). Site-specific factors such as high wind or snow levels must be taken into consideration to ensure this limit is not exceeded.
RAIL SPECIFICATIONS
When installing on mounting rails, ensure they run underneath the panel and provide support to the frame.The positioning of the rail must ensure
that the minimum clamp grip length and the central point of the fixation, e.g., the bolt, is fully within the required clamping zone as indicated on the
following pages.
CLAMP SPECIFICATIONS
Clamp installation must be carried out according to the manufacturer’s instructions, including specific hardware and torque requirements.
Ensure the clamps used are suitable for the planned installation and expected system design loads.
• The grip area must not extend onto the panel glass and/or cause cell shading,
• Avoid the application of excessive pressure to prevent frame deformation.
Fig. : Clamp specifications: Mid-clamps
Min. grip length: mm
Grip depth: - mm
NOTE
• In areas of snow build-up, panels can be subjected to forces in excess of the stated limit even when snow depth does not appear extreme,
causing damage to the framework. If the installation may be affected by this, further panel support is recommended, especially on the lower
row of panels.
• In the case of any questions regarding mounting systems, or if the mounting system to be used does not match any of the instructions shown
in this installation manual, please contact REC for further support.
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Specifications Length
Grip length mm - mm
Grip depth mm
Torque See manufacturer’s
instructions
NOTE
Panels must be installed so that the cells are not shaded as this will drastically reduce electrical output. If partial shading is inevitable at certain
times of the day or year, it must be kept to an absolute minimum. Remove any labels or stickers that may be on the front of the panels and ensure
no residue is le on the glass.
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MOUNTING METHODS: CLAMPING WITH RAILS PARALLEL TO THE SHORT SIDE
The rails must run underneath the panel to provide support to the frame. Where the rails are positioned parallel to the short side of the panel as in
fig. , the clamping zones shown in fig. are to be followed:
• Each panel must be clamped in a minimum of four separate zones, with one clamping point in each quarter of the panel (fig. ).
• The distance between the end clamp and the end of the rail must be a minimum of mm.
• Follow the clamp manufacturer’s instructions to install the clamps, including the recommended applied torque.
• The position of the rails must ensure that the minimum grip length of the clamp and the central point of the fixation, e.g., the bolt, is fully within
the required clamping zone.
Fig. : Clamping of panels with rails parallel to short side
Fig. : Clamping zones for panels with rails parallel to short side
CAUTION
The minimum grip length of each clamp and its center point must be fully located in the same color zone to be rated to that load value (fig. ). If
the panel is secured in two different zones, it is rated to the lower load value only.
NOTE
If required, any further clamps, i.e., ≥, may be clamped elsewhere on the panel, including in the red zone without affecting the warranty.
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a) Long side mounting b) Short side mounting
Rail positioning
Rail positioning
0
350 mm [13.8 in] 350 mm [13.8 in]
350 mm [13.8 in] 350 mm [13.8 in]
200 mm [7.9 in] 200 mm [7.9 in]
200 mm [7.9 in] 200 mm [7.9 in]
780 mm [30.7 in] 780 mm [30.7 in]
780 mm [30.7 in] 780 mm [30.7 in]
655 mm [25.8 in] 655 mm [25.8 in]
655 mm [25.8 in]
655 mm [25.8 in]
0
0
0
GR
GR
GR
GR
0 0
00
Legend: Test Load Design Load (= Test load / 1.5)
Panel quarter division Max. downward load Max. upward load Max. downward load Max. upward load
- mm Pa Pa Pa Pa
- mm; - mm Pa Pa Pa Pa
Not permied (in cases where only four () clamping points are used, additional clamps, i.e., ≥ may be freely located on panel frame)
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MOUNTING METHODS: SLIDE IN SYSTEMS
When installing using slide in systems the mounting system must meet the same specifications including grip lengths, depths and spacing as
specified for clamping and the mounting system must be able to withstand the correct load pressures.
When installing solar panels using a slide-in system, the drainage holes found in the underside of the panel frame (see fig. ) must not be covered.
For any questions regarding installation on such systems, please contact REC directly.
MOUNTING METHODS: MOUNTING HOLES
REC Alpha Series panels can be installed utilizing the four mounting holes ( x . mm) on the underside of the panel at a distance of mm from the
corner (fig. ) in conjunction with a device, e.g., screws, lockbolts or structural blind fasteners, with specifications suitable for the installation (fig. ).
Wheninstallingusingmountingholes,theframeandpaneledgeofeachpanelmustbesupportedbytworails(figs.a&b)ofaluminiumorgalvanized
steel suitable for the application and appropriate for the local environment. Observe the following procedures when using mounting holes:
• The mounting construction must be of a corrosion resistant material, e.g., aluminum or galvanized steel, and appropriate for the local
environment,
• All four mounting holes in the frame must be used (fig. ),
• Additional electrical bonding to Ground is required for the support structure,
• Refer to the fixing device manufacturer’s installation instructions for preload or torque values.
Part Name Material
Rail - T aluminum extrusion
Bolt M x drop in T-stud kit
Nut M flanged hex locking nut
Fig. : Mounting holes: REC Alpha Series Fig. : Device specifications for mounting holes: REC Alpha Series
Fig. Mounting hole installation example: REC Alpha Series
CAUTION
The product warranty will be voided if additional holes are made in the frame. All fixing and fastening materials must be corrosion resistant.
GR GR
GR
Scale: 1:1.57
11 mm ±0.2
[0.43 in ±0.8]
6.6 mm ±0.2
[0.26 in ±0.08]
20.5 mm ±0.5
[0.78 in ±0.08]
22.55 mm [0.9 in]
502.5 mm [19.8 in]
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DRAINAGE HOLES
In each corner of the REC frame small drainage holes are spaced mm from the corner on long and short sides (fig. ). These allow humidity
caused by rain, condensation, snow melt, cleaning or any other process to exit the frame easily and minimize damage.These holes must not be used
for mounting the panel, and they must not be covered by any part of the mounting structure. To enable effective drainage and ensure there is no
damage to the panel, the drainage holes must remain fully open and enable water egress during and aer installation. The shape and dimensions of
the drainage holes may vary depending on product and/or frame design.
GROUNDING
Local regulations may require grounding of the panels. Grounding must be done using an electrical connection from the panel frame. REC solar
panels have a small round grounding hole positioned near each corner of the panel on both the long side and the short side, as shown in fig. and
can be further identified by the grounding symbol stamped in the frame next to it. Check all applicable requirements before beginning installation:
• Suitable grounding clips, lugs or other constructions must be used,
• Aach grounds to the grounding holes in the panel frames,
• Follow the grounding device manufacturer’s installation instructions to ensure a safe and conductive connection, including any
supplementary hardware, e.g., star washer, and tighten according to recommended torque,
• Wherecommongroundinghardware (nuts,bolts,starwashers, split-ringlockwashers,flat washersandthelike)areusedto aachagrounding
device, the aachment must be made in conformance with the grounding device manufacturer’s instructions.
Fig. : Drainage and grounding holes
25.6- 0 [650 - 0 mm]
GR
GR
GR
GR
0-25.6 in [0 - 650 mm]
9.8 - 4 in
[250 - 100 mm]
4 - 9.8 in
[100 - 250 mm]
9.8 - 4 in
[250 - 100 mm]
4 - 9.8 in
[100 - 250 mm]
25.6- 0 [650 - 0 mm]0-25.6 in [0 - 650 mm]
NOTE
• To avoid galvanic corrosion, galvanized or hot dipped zinc plated fasteners are preferred, however stainless steel fastening materials are
equally suitable.
• The support bars across the rear of REC Alpha Series panels are connected to the frame via specially designed grounding clips and do not
need to be individually grounded.
• Negative grounding of the panels is not required by REC.
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Grounding holes
Drainage holes
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CONNECTIONS AND CONNECTORS
The connector type(s) used on REC panels are indicated in the product specifications at the rear of this manual.The connector IP rating is only valid
when correctly connected. All connectors and cables must be secure and tight as well as electrically and mechanically sound. UV-resistant cables
and connectors approved for outdoor use must be used. Conductor gauge must be chosen to ensure DC power losses (voltage drop) are kept to a
minimum (<).
Observe all local regulations when selecting cables.
• For string connections, use minimum mm2or copper wires insulated for a maximum operating temperature of °C,
• Avoid exposing cables to direct sunlight and permanent tension.
Inordertoensuredurableandsafe connections betweenpanelsand BOS equipment, thefollowinginstructionsmust be followed in order toprotect
the electrical connections from the elements.
CONNECTORS
To ensure connector compatibility and reduce the potential for damage to the panels and the wider installation, the connectors used on the REC
Alpha Series are detailed in the Panel Characteristics at the rear of this manual. REC only permits the mating of factory-installed connectors to
connectors of the same manufacturer, type, and system rating as shown in the table below (fig. ):
Fig. : Connector mating matrix
Connector 1 +Connector 2 Permied?
REC Factory-Installed + Stäubli MC Evo- On V Systems
REC Factory-Installed + Stäubli MC On V Systems
only
REC Factory-Installed + REC Factory-Installed
REC Factory-Installed + Any other connector
CUTTING THE CABLES
The cuing of cables is only permied in order to replace a factory-installed connector with another brand of connector to ensure ‘like-for-like’
mating when connected to a non-REC external device. All other changes are prohibited and will invalidate the REC warranty.
• The connector replacement procedure must be carried out correctly and according to the replacement connector manufacturer’s instructions.
• The selected replacement connector must also fulfil all relevant technical specifications and be certified according to applicable standards
(e.g., IEC or UL ) to ensure they are fit for purpose and safety.
• Use of any chemicals or lubricants on the connectors or contacts may only be carried out in line with the connector manufacturer’s instructions.
The REC warranty does not extend to cover any fault traceable to the replaced connectors. Any other modification to the panel is prohibited,
including the opening of the junction box, unless explicitly authorized by REC. Doing so will invalidate the warranty.
CABLE MANAGEMENT
To ensure a long life span of the cables and reduce the potential for damage to the cables, follow the instructions below:
• To prevent stress on the junction box casing, ensure the cable exits the junction box in a straight line before any bend in the cable,
• The cables must have a minimum bending radius of mm to avoid damage to the insulation (fig. ),
• Ensure cables do not hang loose where they may be damaged through friction or stress, e.g., caused by mechanical abrasion or grazing animals,
• Protect connectors from falling or dropping water by locating them directly beneath a panel,
• Cables must be firmly secured to the structure, without over-tightening, as this can deform the cable insulation using UV-resistant cables,
• When securing the connector, place it so that it has with sufficient air circulation all around. This allows the connector to dry effectively and
avoids the risk of damage or degradation of the connection,
• Secure the cable either side of the connectors to ensure no stress is exerted on the connector casing or cable entry,
• To enable correct cooling and drying of the connectors, do not add extra protection to the connector, e.g., heat shrink, grease or tape.
More detailed information is given in the
Guide to Best Practice - Connections and Connectors
which can be found via the REC online Download
Center (www.recgroup.com/downloads)
NOTE
Some countriesand/or regions have specificregulationsregarding the matingof connectors.Installersareresponsiblefor ensuringthe compliancy ofthe
system with such local regulations.
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DANGER Electrical shock
Safety is paramount when working with electrical connectors.
• Ensure that any installation work is not carried out on live or load-carrying parts.
• Connections must not be disconnected under load and the system must be isolated from the grid before carrying out any maintenance or
repair work.
< 60 mm >
< 30 mm >
Fig. : Minimum cable bend radius
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PANEL MAINTENANCE
CLEANING INSTRUCTIONS
REC solar panels have been designed for easy maintenance. However cleaning solar panels can assist in optimizing electricity output. The need for
cleaning will vary dependent on location, rainfall, pollution levels and the angle of installation – the lower the angle of installation, the more cleaning
will be required. ‘Normal’ rainfall will naturally clean the panels if installed at a sufficient angle to ensure water runs off the surface. To optimize
electrical output it is recommended to clean the panels when dirt can clearly be seen on the glass surface.
Using a so rubber squeegee, wipe the panel surface from the top downwards to remove any residual water from the panel glass. Take care not to
scratch the surface or introduce foreign elements that may cause damage to the panel. Always rinse the panel with plenty of water. Panels can be
le to dry in the air or wiped dry with a clean and so cloth or chamois.
For more information on cleaning REC solar panels, consult the
REC Cleaning Information Sheet
which is available to download from the online REC
Download Center www.recgroup.com/downloads. If in doubt at any time when cleaning the panels, stop and obtain professional advice.
SYSTEM INSPECTION
The system should be inspected regularly to ensure that:
• Fasteners are secure, tight and free from corrosion,
• Electrical connections are secure, tight, clean and free of corrosion,
• The mechanical integrity of the cables is intact,
• Bonding points to ground are tight, secure and free from corrosion (which could break the continuity between the panels and ground).
RECYCLING
REC makes every effort to ensure panel packaging is kept to a minimum. The paper and cardboard packaging can be recycled and the protective
wrapping and panel separating blocks are also recyclable in many areas. Recycle packaging and panels according to local guidelines and regulations.
DISPOSAL OF OLD ELECTRICAL AND ELECTRONIC EQUIPMENT
Panels should be recycled at the end of their useful life according to local guidelines and regulations. By ensuring REC solar panels are disposed
of correctly, you will help prevent potential negative impact on the environment and human health. The majority of the panel components can be
recycled.
For installations in the European Union, REC solar panels are subject to WEEE regulations. The symbol in fig. as found on the label on the rear
of the panel indicates that this product must not be treated as household waste and must be disposed of at an appropriate collection point for the
recycling of electrical and electronic equipment.The recycling of the different components and materials will help to conserve natural resources.
Fig. :WEEE symbol
The European WEEE (Waste Electrical and Electronic Equipment) Directive regulates the correct recycling of electronic and electrical waste in all
member states of the European Union (EU). For end-customers it is a free of charge disposal system, financed by the manufacturers and importers,
where panels can be brought to a local recycling depot, or in the case of larger numbers, be picked up from site, as is the case with other electrical
equipment, e.g., refrigerators or televisions. The extensive process steps for proper disposal are strictly regulated and place no further obligations
on the owner of the panels. For more information about the recycling of this product, please contact your local recycling authority or recycling
center.
CAUTION
• Panel cleaning must always be carried out when the panels are cool, e.g., early morning, to avoid breakage through thermal shock.
• Use of high pressure hoses or cleaners is not permied as these may damage the panels, laminate or cells.
NOTE
• Avoid puing pressure on the on the panel surface when cleaning or drying, e.g., leaning, standing or resting buckets on it.
• Use only deionized water free from grit and physical contaminants, at ambient temperature and use a sponge, microfiber cloth or a so
brush to wipe away the dirt (rainwater, tap water or diluted alcohol may also be used as a secondary solution).
• For further cleaning a mild, biological and biodegradable washing-up liquid may be used.
• If stains require more effort to be removed, Isopropyl alcohol of a concentration less than may be used. Acidic or alkaline detergent may
not be used.
i
RECInstallationManual-RECAlphaSeries -IEC/
Rev A . Ref: NE
PANEL CHARACTERISTICS
TECHNICAL PROPERTIES: REC ALPHA SERIES
Fig. :Panel dimensions: REC Alpha Series
Specifications subject to change without notice.
Ref: PM-DSRev- C .
Ref: PM-DSRev- A .
ELECTRICAL DATA Product Code*: RECxxxAA
Nominal Power - PMAX (Wp)
Wa Class Sorting - (W) /+/+/+/+/+
Nominal Power Voltage - VMPP (V) . . . . .
Nominal Power Current - IMPP (A) . . . . .
Open Circuit Voltage - VOC (V) . . . . .
Short Circuit Current - ISC (A) . . . . .
Power Density (W/m2). . . . .
Panel Efficiency () . . . . .
Nominal Power - PMAX (Wp)
Nominal Power Voltage - VMPP (V) . . . . .
Nominal Power Current - IMPP (A) . . . . .
Open Circuit Voltage - VOC (V) . . . . .
Short Circuit Current - ISC (A) . . . . .
Values at standard test conditions (STC: air mass AM ., irradiance W/m, temperature °C), based on a production spread with
a tolerance of PMAX, VOC & ISC ± within one wa class.
Nominal module operating temperature (NMOT: air massAM ., irradiance W/m, temperature °C, windspeed m/s).
* Where xxx indicates the nominal power class (PMAX) at STC above.
Specifications subject to change without notice.
Measurements in mm [in]
GENERAL DATA
Cell type:
half-cut cells with REC
heterojunction cell technology
strings of cells in series
Glass: . mm solar glass with
anti-reflection surface treatment
Backsheet: Highly resistant
polymeric construction
Frame: Anodized aluminum
Junction box: -part, bypass diodes, IP rated
in accordance with IEC
Connectors:
Stäubli MC Evo
PVKBTEVO/PVKSTEVO( mm)
in accordance with IEC
IPonly when connected
Cable: mmsolar cable, . m + . m
in accordance with EN
Dimensions: x x mm (. m)
Weight:. kg
Origin: Made in Singapore
CERTIFICATIONS
WARRANTY*
LOW LIGHT BEHAVIOUR
TEMPERATURE RATINGS*
MAXIMUM RATINGS
take-e-way WEEE-compliant
recycling scheme
Typical low irradiance performance of module at STC:
IEC :, IEC :, UL , UL
IEC PID
IEC Salt Mist
IEC Ammonia Resistance
ISO Ignitability (Class E)
IEC Dynamic Mechanical Load
IEC : Hailstone (mm)
AS. NCC Cyclic Wind Load
ISO :, ISO :, OHSAS :
Standard REC ProTrust
Installed by an REC Certified
Solar Professional No Yes Yes
System Size All ≤ kW kW
Product Warranty (yrs)
Power Warranty (yrs)
Labor Warranty (yrs)
Power in Year
Annual Degradation . . .
Power in Year
See warranty documents for details. Conditions apply.
100 200 300 400 500 600 700 800 900 1000
85
90
95
100
105
Irradiance (W/m)
Rel. Efficiency ()
Nominal ModuleOperatingTemperature: °C (±°C)
Temperature coefficient of PMAX:. /°C
Temperature coefficient of VOC:. /°C
Temperature coefficient of ISC:. /°C
*The temperature coefficients stated are linear values
Operationaltemperature: ... +°C
Maximum system voltage: V
Design load (+): snow
Maximum test load (+):
Pa ( kg/m)+
Pa ( kg/m)*
Design load (-): wind
Maximum test load (-):
Pa ( kg/m)+
Pa ( kg/m)*
Max series fuse rating: A
Max reverse current: A
+Calculated using a safety factor of .
*See installationmanual for mountinginstructions
STCNMOT
2063± 2.5 [81.20±0.1]
1058 [41.7]
400 [15.75]
28 [1.1]
1026±2.5 [40.0±0.1]
985 [38.80]
45 [1.5]
17 [0.7]
502.5 [19.8]
11± 0.2
[0.43±0.8]
6.6± 0.2
[0.26±0.08] 20.5±0.5
[0.78±0.08]
761±3 [29.9±0.1]
30 [1.18]
GR
22.55 [0.9]
1300 [51]
1200 [47]
GR
GR
GR
RECInstallationManual-RECAlphaSeries -IEC/
Rev A . Ref: NE
ANNEX : INSTALLATIONS ON WATER PLATFORMS
This section is applicable to the following products only:
• REC Alpha Series
The above named REC solar panels may be installed on water platform-type mounting systems (note that the certification testing of solar panels
does not include testing on these types of systems). When installing any of the above named REC solar panels on fixed position (e.g., anchored) water
platforms, for example, floating pontoons, follow the instructions below specific to such applications. Failure to do so will invalidate the warranty.
INSTALLATION ENVIRONMENT
i) Installation site
• REC solar panels may only be installed on closed bodies of fresh water where water salinity does not exceed mS/cm at °C ( PSU). This
specifically excludes mounting on sea and ocean applications.
• The maximum permied wave height must not exceed m from the crest to the trough of the wave.
ii) Floating platforms
• When using a floating platform, follow the manufacturer’s instructions regarding installation, maintenance, inspection and cleaning at all times.
iii) Minimum installation height
• The minimum installation height of REC solar panels on floating platform systems is cm and is defined as the height between the water
surface and the lowest edge/part of the panel during normal operation.This will help to shield the panel from direct water spray.
INSTALLATION INSTRUCTIONS
i) System installation
• All cables used for the installation must have sufficient length and slack to prevent damage due to water level changes and wave motions.
ii) Mounting panels
• Installation of REC solar panels must be in accordance with the aforementioned standard mounting instructions.
• The junction box should be oriented as far as possible from the water surface according to system design and the junction box, cables and
connectors must be protected from direct water splash.
• The installation must allow for sufficient spacing between individual panels, in order to avoid all contact as caused by the natural movement
and flexing of the floating structure.
iii) Panel protection
• In areas with high avian activity, additional bird repelling devices may be installed as long as they do not adversely affect system performance, e.g.,
shading or to the local environment etc.
• If using lightning protection equipment on the floating installation, all relevant local regulations must be respected.
MAINTENANCE
• Regularly inspect the installation to ensure all panels are securely mounted.
SAFETY
• Immediately disconnect the system if the installation or the floating platform exhibits deviation from standard operating conditions.
• In the event of the floating platform being submerged, disconnect the DC connection at the inverter immediately. Do not aempt to salvage
panels when sunlight is present.
NOTE
For all installations on water platforms, first advise REC before the start of installation in case of any site specific instructions or constraints.
i
NOTE
Negative system grounding is required for REC solar panels installed on a floating platform.
i
NOTE
Forinstallationswithhighavianactivity,systemcleaningmayberequiredatmorefrequentintervalstoreduceshadingofpanelscausedbybirddefecation.
i
RECInstallationManual-RECAlphaSeries -IEC/
Rev A . Ref: NE
ANNEX : INSTALLATIONS USING MODULE LEVEL POWER ELECTRONICS
This section is applicable to all REC products referred to in this installation manual.
Module Level Power Electronics (MLPE) is the name given to the range of panel-level components that can be installed in PV system circuits
installed on or in buildings to reduce shock hazard for emergency responders. MLPE devices can be supplied pre-installed by panel manufacturers
or as a ‘retro-fit’ system made by third-party manufacturers.
MLPE devices may be used on REC solar panels where desirable or mandatory (note that the certification testing of solar panels does not include
testing with MLPE devices).When installing an MLPE device on an REC solar panel, follow the instructions provided by the device manufacturer and
the instructions specific for REC solar panels given below. Failure to follow the manufacturer and the REC instructions may invalidate the warranty.
INSTALLATION
i) Installation
• MLPE devices are suitable for use wherever solar panels are suitable for installation. Observe any limitations set by the MLPE manufacturer.
(e.g., minimum mounting gap between MLPE and rooop).
• When aaching an MLPE device to a solar panel, it must be secured to the panel frame. Follow MLPE manufacturer instructions to ensure
optimum mounting of MLPE device and prevent any slippage during operation.
• MLPE devices may also be aached to the mounting construction. In such cases, refer to the instructions provided by the manufacturer.
• Wherever possible, the installation of the MLPE device should not cover the product label on the rear of the panel.
• MLPE devices may only be installed on REC solar panels in the areas shown in the diagram below (fig. ):
Fig. :MLPE device installation zones
Installation of MLPE device in the green zone is permied.
Installation of MLPE device in the red zone is not permied.
CAUTION
• To avoid damage to the panel and to allow for thermal expansion, there must be a minimum gap of . in (. mm) between the MLPE device
and the panel backsheet.
• The mounting holes in the panel frame must not be used for the installation of MLPE devices.
• The drilling of extra holes in the frame is not permied and will invalidate the panel warranty.
CONNECTION
• First ensure the installation of the MLPE device is secure and safe.
• Following the device manufacturer’s instructions to connect the cables from the MLPE device to the solar panel correctly (usually positive to
positive [+ to +] and negative to negative [- to -]).
• Connection to the next panel in the array should be done from the ‘free’ cables.
SAFETY
• Immediately disconnect the device if there is a problem during installation.
0 - 650 mm [0 - 25.6 in]
0 - 650 mm [0 - 25.6 in]
0 - 1026 mm [0 - 40.4 in]
0 - 650 mm [0 - 25.6 in]
0 - 650 mm [0 - 25.6 in]
0 - 1026 mm [0 - 40.4 in]
GR GR
GR
EC Declaration of Conformity
Issuer's name and address: REC SOLAR PTE. LTD.
20 Tuas South Avenue 14
SINGAPORE 637312
SINGAPORE
Product: Crystalline silicon terrestrial photovoltaic modules
Type designation:RECxxxPE* REC Peak Energy* Series;
RECxxxPE 72 REC Peak Energy 72* Series;
RECxxxPE Z-Link REC Peak Energy Z-Link Series;
RECxxxPE Z-Link-S REC Peak Energy Z-Link-S Series;
RECxxxPE2SM 50* REC Peak Energy 2S Mono 50* Series;
RECxxxTP* REC TwinPeak* Series;
RECxxxTP 72* REC TwinPeak 72* Series;
RECxxxTP2* REC TwinPeak 2* Series;
RECxxxTP2S 72* REC TwinPeak 2S 72* Series;
RECxxxNP* REC N-Peak* Series;
RECxxxAA* REC Alpha* Series;
*indicates type/name can include any of the suffixes: ECO, BLK, BLK2, Black, XV, Mono (M in product code), e.g., RECxxxTP2SM 72 XV; REC TwinPeak 2S Mono 72 XV.
The object of the declaration described above is in conformity with the relevant Union harmonisation legislation:
2014/35/EU
"Directive of the European Parliament and of the Council on the harmonisation of the laws of the Member States relating
to the making available on the market of electrical equipment designed for use within certain voltage limits".
The technical documentation and full compliance with the standards listed below proves the conformity of the product with the
requirements of the above-mentioned EC Directive and its conformity with the safety requirements of the EC Low-Voltage Directive
2014/35/EU.:
DIN EN 61215 (VDE 0126-31):2006-02; EN 61215:2005
DIN EN 61730-1 (VDE 0126 Teil 30-1):2007-10; EN 61730-1:2007-05
DIN EN 61730-1/A1 (VDE 0126-30-1/A1):2012-09; EN 61730-1:2007/A1:2012
DIN EN 61730-1/A2 (VDE 0126-30-1/A2):2014-01; EN 61730-1:2007/A2:2013
DIN EN 61730-1/A11 (VDE 0126-30-1/A11):2015-08; EN 61730-1:2007/A11:2014
DIN EN 61730-2 (VDE 0126-30-2):2012-09; EN 61730-2:2007 + A1:2012
IEC 61215-1:2016; EN 61215-1:2016
IEC 61215-1-1:2016;EN 61215-1-1:2016
IEC 61215-2:2016; EN 61215-2:2017
IEC 61215:2005
IEC 61730-1:2004
IEC 61730-1:2004/AMD1:2011
IEC 61730-1:2004/AMD2:2013
IEC 61730-1:2016
IEC 61730-2:2004
IEC 61730-2:2004/AMD1:2011
IEC 61730-2:2016
Remark: The VDE Testing and Certification Institute, Merianstr. 28, 63069 Offenbach (Germany), has tested and certified the
product(s) according to these standards.
Certificate No. 40046983
File Reference 5017538-3972-0001 / 253159
This declaration is issued under the sole responsibility of the manufacturer and loses its validity if the product is misused or modified
without proper authorization from REC.
Ter Soon Kim – Chief Operating Officer
Singapore, April 3,2019
www.recgroup.com
RECInstallationManual-RECAlphaSeries -IEC/
Rev A . Ref: NE
EC DECLARATION OF CONFORMITY
RECInstallationManual-RECAlphaSeries -IEC/
Rev A . Ref: NE
DOCUMENT HISTORY
Date Revision Reason
. A First release
REC SOLAR PTE. LTD.
20 TUAS SOUTH AVENUE 14
SINGAPORE 637312
SINGAPORE
Tel: +65 6495 9228
Mail: [email protected]
www.recgroup.com
RECInstallationManual-RECAlphaSeries -IEC/
Rev A . Ref: NE
This manual suits for next models
1
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