Safety and Installation Manual
Contents
1. TIT rr 4 45 she om ONTARIO SILFAB ONTARIO INC SAFETY and INSTALLATION MANUAL Photovoltaic Modules SLAXXXM3A SLAXXXM SLAXXXP3A SLAXXXP SLGXXXM3G SLGXXXM SLGXXXP3G SLGXXXP 44 BEA SAFETY AND INSTALLATION MANUAL FOR EER QQ PHOTOVOLTAIC MODULES DES SS _ Silfab ONTARIO CONTENTS TE OBI depu oque qum dM quU M NIME E 3 AED uc HdBRiluP 4 3 Underwriters Laboratories UL Listing Information ens 4 4 Limited Warranty e teen ee eens eet eee eet emen nnne renean nan 4 5 Module Specification 0 cece ccc cee tree rene HH emn eaae naa EE EEE EES 4 uie o 5 7 7 Use and MaINCCNANCC E TP P ETUTUPUTUTUTTTTT 13 9 Packaging Handling and Storage of mns 15 10 Appendix 1 Electrical 4 4 Sune oa teen ores PHEVIEU Gcr 18 SAFETY NOTICE This Safety and Installation Manual provides important safety information relating to the installation maintenance and handling of Silfab SLA and SLG modules Professional installers operation amp maintenance technicians and system users owners should read this manual careful2. 30 C e Using the calculations above it is possible when measuring with a multi meter to verify Voc meets the standard shown in the module datasheet e n a case that the V to the connectors 15 decidedly lower than the standard values 75 or less this could represent a condition of anomaly which should be investigated more thoroughly To measure the short circuit current l e A PV module exposed to the south inclined perpendicularly to the rays of the sun in the middle of the day about 12 00 to 1 00 PM and in conditions of good weather presents a value of l similar to the rated values at STC as measurable with amp meter in continuous current e By measuring the solar radiation E effective at the moment with a solarmeter pyranometer in W m the short circuit current of the TELT 5 45 ONTARIO module at the moment lI lt mog should be very close to the following value Where e Is the short measured at STC 1000 W m2 is the radiation at STC circuit current e The measurement of the Isc is executable with precision only when using a solarmeter pyranometer which gives exact information on the conditions of solar radiation at the moment otherwise it is not reliable e n the case of the unavailability of a solarmeter pyranometer it will only possible to have an estimate of the functionality of the module by comparing the value of l amp mog measu
3. SAFETY AND INSTALLATION MANUAL FOR PHOTOVOLTAIC MODULES Use the 4 mounting holes slots see Fig 3a 3b on the PV module frame to bolt the module with M6 1 4 stainless steel screws and nuts to the mounting framework The distance of the mounting holes has been designed in order to result in a uniform wind and snow load without damaging the module Do not drill additional holes in the module frame doing so will void the Warranty Mounting using clamping method 7 2011 2013 Silfab Ontario Inc Specifications in this manual are subject to revisions without notice Silfab recommends the use of clamps with a design as shown in Fig 4a or equivalent The use of improper clamps will void the Warranty When using clamps it is possible to mount the modules in horizontal the shorter side of one module facing the shorter side of the neighboring module or in vertical the longer sides facing each other configuration Refer to Fig 4b c d for an example of attaching the modules to a support structure using mounting clamps It is recommended to always use stainless steel screws and bolts The modules can be mounted on continuous base structures inclined or horizontal such as rails or similar Both base structures must be mounted at the same distance from the symmetrical axis vertical or horizontal of the module Fig 5a 5b In vertical configuration it is strongly recommended to place the supportin
4. 9 PACKAGING HANDLING AND STORAGE OF MODULES 9a Silfab s Packaging SILFAB Ontario provides the SLA SLG modules in the most appropriate packaging designed to guarantee that the transportation and storage will be in conditions of maximum safety and protection until the time of installation Each package contains up to 35 modules arranged in a horizontal position with the glass facing downwards as shown in Fig 6 Transport the module in its original packaging until installation If transporting outside of the Original packaging is necessary contact Silfab for written approval advance Protect all parts of the module during transport and installation from mechanical stresses 22 3 Fig 6 Module Packaging The packaging consists of e A maximum number of 35 SLA modules or 30 SLG modules 1 wooden pallet Fig 7 e 4 plastic protective corner angles per module Max 140 Fig 8 e Containment straps e 1 waterproof cover e Transparent film for containment 2011 2013 Silfab Ontario Inc Specifications in this manual are subj ect to revisions without notice 15 SAFETY AND INSTALLATION MANUAL FOR PHOTOVOLTAIC MODULES Fig 7 Wooden pallet Fig 8 Protective corner 9b How to Manage the Packaging Each package has been designed to allow the shipment and storage of modules in order to maintain their integrity unchanged over time provided that the information and indications su
5. East Fig 2 Orientation Vs Azimuth The tilt angle of ideal average throughout Ontario Canada 15 30 however even the inclination typical the roof of a dwelling B 15 20 being already an inclined plane could make the angle acceptable if not ideal for the installation of coplanar modules on it using a special standard structure for support Depending on the variation of the tilt angle of the modules with respect to the ground or of their orientation in relation to facing south Azimuth there will be changes in the annual average amount of energy produced by the modules themselves and therefore of the plant connected to the network to which they are linked 2011 2013 Silfab Ontario Inc Specifications in this manual are subject to revisions without notice SAFETY AND INSTALLATION MANUAL FOR PHOTOVOLTAIC MODULES 2 Disclaimer of Liability Since the methods of system design installation techniques handling and use of this product are beyond company control SILFAB does not assume responsibility and expressly disclaims liability for loss damage or expense resulting from improper installation handling or use 3 Underwriters Laboratories UL Listing Information This product meets or exceeds the requirements set forth by UL 1703 for PV Modules This UL Standard covers flat plate PV modules and panels intended for installation on buildings or those intended to be freestanding To satisfy the listin
6. modules are robust but in particular the glass front cover and cells may be subject to damage if the modules is improperly handled or installed Wear protective gloves when handling and installing the modules in order to be protected against cutting by sharp edges and against skin burns 1070 A Handle the module in a way that avoids breakage or scratching of the front cover glass and mechanical damage to any other part of the module A Do not carry the module by its connector wires in order to avoid the risk of electric shock and prevent damage to the module During the wiring and installation of the modules use caution Fig 5b allowed positions for fixing SLG modules using Do not trample on or scratch the modules mounting clamps j Do not drop sharp or heavy objects on either surfaces of the module ATTENTION in the case of installation with Do not subject the modules to any impact in modules in the vertical position it is particular in the vicinity of the edges of the preferable to maintain the J unction Box frames and do not flex them mechanically The modules are made of a single laminate located in the upper part of the module This therefore once damaged they are not practice will help reduce as much as repairable possible contact between any standing water and the J unction Box and avoid AN n the event of any damage to either the front possible water infiltration
7. modules can be grounded using third party grounding devices as long as they are certified for grounding modules and the devices are installed according to the manufacturer s specified instructions Examples of acceptable grounding methods include the following must be verified with local codes and regulations o Attach a separate approved ground wire to one of the holes marked with a ground label on the module frame with a UL approved ring terminal or UL listed grounding lug o Schletter Rapid Clamps are acceptable when using the proper size to match Silfab s 38 mm frame o WEEB clips compatible with the chosen racking mounting clip are also acceptable when properly installed ensuring an electrical bond between the module frame and the grounded racking Ensure that the grounding area for the connection is clean and free from oxides or 12 SAFETY AND INSTALLATION MANUAL FOR PHOTOVOLTAIC MODULES any debris that could impede the electrical grounding Always follow safety procedures when installing any grounding mounting system 7e Environmental Considerations SLA SLG modules should be installed in a location where there is no shading throughout the year A module is considered shadow free if it is unobstructed across its entire surface for the whole year Even on the shortest day of the year unobstructed sunlight can reach the module Ensure there are no obstacles to block light near the installati
8. safety hazards consequently contact with a damaged module can cause electric shock The total voltage of modules connected in series corresponds to the sum of the voltages of the single modules whereas connecting the modules in parallel results in adding up the currents Consequently strings of inter connected modules can produce high voltages and high currents and constitute an increased risk of electric shock and may cause injury or death For installation maintenance or before making electrical connection disconnection ensure all modules in the PV array are exposed to a light intensity that is less than 400 W m Follow the Isc measurement instructions in section 8b to determine the value of the solar irradiance E e Methods to ensure a low solar irradiance when making electrical connections or disconnections include o Covering the modules with an opaque cloth or other material in order to shield them from exposure to light BE SAFETY AND INSTALLATION MANUAL FOR SIC PHOTOVOLTAIC MODULES intensity greater than 400 W m Opaque material can be supplied by Silfab upon request o Making the connections during hours of low intensity of solar irradiance such as early morning or late afternoon o Making the connections with the modules tilted perpendicular to the sun to increase shading between the strings thus decreasing solar irradiance 6 2011 2013 Silfab Ontario Inc Specific
9. storage of the modules use maximum care to ensure the full integrity of the modules 9c How to Handle the Pallet During the handling of the pallet make sure to pay the utmost attention The packaging must be raised moved exclusively with fork lift trucks or hand pallet trucks fitted with forks of length appropriate to its size and weight The pallet which supports the packaging is a 4 ways type able to be lifted from any of the short or long sides with dimensions of 1750 x 1080 mm For the safe handling of the pallet the forks length should be e Aminimum of 1800 mm for lifting from the shorter side e Able to support the total weight of the packaging of approximately 700 kg T ut 1 lb m s LU e c ITE e recs Fig 9 How to handle the packaging Pay attention during the stages of handling and unpacking Verify that the package is positioned on a surface that is either flat or not excessively deformed to a point that would impart an 45 Silfab ONTARIO inclination to the pallets which could damage the PV modules SILFAB DOES NOT ASSUME RESPONSIBILITY IN THE EVENT OF DAMAGE TO THE MODULES ARISING FROM MANAGEMENT OF THE PACKAGING THAT IS IMPROPER OR DIFFERENT FROM WHAT WAS STATED IN THIS DOCUMENT 9d Unpackaging Observe the following procedures for the unpacking of modules e Place the packaging on a stable and flat surface e U
10. M 1 5 Temperature 25 C Measurement uncertainty lt 3 Sun simulator calibration with modules calibrated by Fraunhofer Institute Power Tolerance Positive Sorting 0 5W Maximum System Voltage 600V or 1000V on request Series fuse rating 15A Electrical characteristics may vary by 5 power by 0 45W Document Number MAN SFO 02 Revision Date April 2 2013 ty TBA SAFETY AND INSTALLATION MANUAL FOR 3 SN PHOTOVOLTAIC MODULES ONTARIO Please conserve a copy of this manual at the location of the PV System and inform the system owner of all relevant aspects of safety operation and maintenance To download a copy of this installation manual scan the QR Code on the back of a Silfab module or go to www silfab ca media center download area html Silfab Ontario 240 Courtneypark Drive East Mississauga Ontario Canada L5T 2Y3 SN Tel 1 905 255 2501 FER Fax 1 905 696 0267 Se Email info silfab ca Web www silfab ca S ONTARIO a Company of Silfab Group Via Trieste 33 35121 Padova Italy Tel 39 0 49 9431374 Fax 39 0 49 9439735 E malil info silfab eu Web www silfab eu Document Number MAN SFO 02 Revision Date April 2 2013
11. ations in this manual are subject to revisions without notice 4484 5 5 ONTARIO 7 Installation 7a Module Mounting The module is class C fire rated When installing Silfab modules local building code requirements and regulations must be adhered to at all times In particular in case of roof mounting fire protection must be compatible with the class C fire rating ie fire resistant roofing materials Class C rating is to be maintained when mounting the modules at any inclination angle Sufficient ventilation of the module backside is required for maintain the Class C fires rating and therefore the mounting configuration e g sufficient clearance should be adapted accordingly The recommended clearance distance is a minimum 10 cm Do not drill any additional holes into the module frames and do not cover the drainage holes Pre assembled mounting systems will need written approval by Silfab in advance The modules can be mounted in every angle from horizontal to vertical avoiding configurations with the junction box up side down at all times e g trackers with sleep mode In order to maximize module exposure to direct sunlight the modules should be oriented to the south in the northern hemisphere and to the north in the southern hemisphere Mounting Methods Mounting using mounting holes e Each module must be securely fastened at a minimum of 4 points
12. b Ontario Inc Specifications in this manual are subject to revisions without notice 3 SAFETY AND INSTALLATION MANUAL FOR PHOTOVOLTAIC MODULES The general performance of the modules is heavily dependent on the intensity of the incident solar radiation as illustrated in Fig l Acheiving maximum performance requires proper installation with the modules oriented towards the South and their surface exposed as perpendicularly possible to the incident rays of the sun e Irradiance 1000W m 10065 Irradiance 800W m P 7996 irradiance 600W m P 5856 Irradiance 400W m 38 Irradiance 200W m P 1896 Current 0 5 10 15 20 25 30 35 l Voltage V Fig 1 IV curve at different irradiance Avoid any shading caused by obstacles in and around the area of installation as shading can cause loss of output A high ambient temperature and therefore an increased operational temperature of the modules also contribute to a proportional reduction in electrical performance In order to optimize the production of electical energy of the modules and therefore of the system connected to an electrical grid it is the responsibility of the installer to make sure the modules are positioned as much as possible facing south with the tilt angle B inclination of the surface of the modules in respect to the ground as shown in Fig 2 optimal for the type of desired application South
13. ctor can be used as default value for correction of Vo e n order to obtain the required electrical current and or voltage the modules can be connected in series in parallel or in a combination of both o In the case of series connection do not exceed the maximum system voltage of 600V even at low temperatures Always use the same type and rating of module in one installation o In the case of parallel connection of modules or series strings of modules fusing may be required Information about the fuse rating can be found on the module s nameplate and in the datasheet see also NEC 690 for additional fusing requirements o The voltage of the strings of modules in series when measured at their poles is the sum of all the individual voltages of 543335 eeeen S22 S Ifa b AN ONTARIO each module This total voltage should be compatible with the range of input voltages admissible for the inverter to which the modules are connected 7d Grounding 2011 2013 Silfab Ontario Inc Specifications in this manual are subject to revisions without notice The module frame or array must be grounded before wiring For grounding use material that is certified according to UL 1703 in particular the grounding should be performed by a qualified electrician using grounding methods in accordance with article 250 of NEC and relevant local codes and regulations SLA SLG
14. e module Causing damage DO NOT OVERTURN THE PACKAGING the packaging is only designed to be handled and stored with the modules maintaining the position of the arrow printed on the packaging with the arrow always facing upwards Not following these indicated directions may create forms of mechanical stress on the modules that could cause damage or breakage RECYCLABLE most of the photovoltaic modules are recyclable They should not be thrown into landfill without a proper method for recycling Although they are not yet regulated by current rules of refutes RAEE many institutions and public structures are organising to collect the modules that are damaged or are no longer usable for materials FRAGILE the photovoltaic modules manufactured using a glass front which makes up approximately 70 of the total materials used to construct them Although the modules are stiffened by an aluminium frame any direct impact to the glass or on the corners of the modules should be avoided Avoid flexing the laminates or applying non distributed loads and stresses Avoid scratching the surface of the 2011 2013 Silfab Ontario Inc Specifications in this manual are subject to revisions without notice 16 SAFETY AND INSTALLATION MANUAL FOR PHOTOVOLTAIC MODULES exterior glass or backsheet Do not apply any forces to the backsheets Y Handle with care HANDLE WITH CARE during the operation of shipping and
15. ers that are recovered will be reused by SILFAB on new packages minimizing the amount of material ending up in landfills The customer must collect the protective corners in nylon bags or something of similar texture see Fig 11 and stack the pallets max 15 units see Fig 12 in order to facilitate the loading operations SILFAB will periodically when the amount justifies the cost of the transportation recover these materials returning them for reuse at the manufacturing plant Fig 11 amp 12 How to package the pallets and plastic corners respectively after unloading ready to deliver back to Silfab for reuse TITAN SAFETY AND INSTALLATION MANUAL FOR SEQ PHOTOVOLTAIC MODULES ONTARIO 10 APPENDIX 1 Electrical Specifications __ SLA250M SLA255M SLA260M SLA265M SLA270M SLA275M SLA280M SLA285M_ Pmax 250 255 260 265 270 275 280 285 Imp 827 838 849 86 871 88 886 891 isc 88 892 904 916 928 936 943 947 Pmax 240 245 250 255 260 8 01 813 824 835 846 8 53 864 876 887 899 Pmax 300 305 310 315 320 325 340 345 Imp 8 26 835 844 853 862 87 875 88 4489 451 453 455 456 4581 461 464 Isc 879 888 899 909 919 929 934 938 Pmax 290 295 300 305 310 8 03 812 821 83 839 449 451 85 862 872 882 89 Standard Test Conditions Measurement conditions STC 1000 W m A
16. g elements nearby the mounting holes or in any case allow a spacing of 800 941 mm between them This is necessary in order to maintain a correct load distribution Fig sersan 48 4 gt Ste A Silfab ONTARIO 5a 5b and achieve the 5 4 kPa load rating e n horizontal configuration fixing the modules by blocking them at the 4 mounting holes will guarantee the characteristics regarding the static loads as certified e When clamping the modules in horizontal configuration on a support structure the following rules have to be applied in order to maintain the resistance against static loads as certified o If the bars or rails are in vertical direction they have to be placed nearby the corner holes or in any case a spacing of 800 941 mm between the bars has to be maintained in order to achieve the 5 4 kPa load rating Fig 5a 5b o If the bars or rails are in horizontal direction they have to be placed with a spacing of 500 750 mm in order to achieve the UL specified 2 4 kPa load rating Fig 5a 5b e modules can also be fixed by placing them with their frame on a structure that iS supporting the two sides of the frame over their whole length In this case the position of the mounting clamps must be in accordance with the above mentioned spacings 800 941 mm and 500 750 mm respectively refer also to Fig 5a 5b 2011 2013 Silfab Ontario Inc Specification
17. g for this product the modules must be mounted with a rack or standoff structure The UL listing does not include integration into a_ building surface because additional requirements may apply This product is not intended for use where artificially concentrated sunlight is applied to the module 4 Limited Warranty Please refer to SILFAB General Terms and Conditions of Sale for details of the modules limited warranty Failure to comply with this Safety and Installation Manual will invalidate SILFAB Warranty for the PV modules as stated in the General Terms and Conditions of Sale 5 Module Specification Please refer to the technical datasheet for the module SILFAB SLA or SLG respectively for electrical performance data These electrical data are measured under Standard Test Conditions STC of 1000 W m irradiance with Air Mass AM of 1 5 spectrum and a cell temperature of 25 C 543335 TEITH e B ONTARIO Safety Precautions Installation should be performed only by authorized personnel Module installation must be performed in compliance with the latest U S National Electrical Code NEC in the USA or with the latest Canadian Electrical Code and any applicable local codes Within the modules there are no user serviceable parts Do not attempt to repair any part of the modules Contact your module supplier if maintenance is necessary In order to reduce the risk of electric shock prior to insta
18. ing the sunlight s radiation reaching their surface when appropriately exposed into continuous direct current DC The SLA SLG modules are intended to be used only and exclusively in photovoltaic module systems connected to the electrical grid therefore it is not recommended to use them in battery powered photovoltaic module systems stand alone The rated currents at Standard Test Conditions STC of the SLA SLG modules are variable depending on the model and the relative power rating as indicated in the respective technical data sheets Most of the electrical parameters of the modules specified in the datasheets are determinable only by using special instrumentation in the laboratory therefore only some of them are measurable outside of a lab using common instrumentation voltmeter ammeter solarimeter pyranometer It is possible following very precise procedures to carry out electrical measurements of voltage and current as snapshots which enable you to monitor the operation of the modules and determine possible although rare anomalies The electrical output parameters for SLA SLG modules of technical importance during the operation installation and maintenance are the following e Voltage at open circuit Voc Current at short circuit l4 Voltage at point of maximum power VD max Current at point of maximum power IP max Solar radiation in W m at the time Temperature of the cells 2011 2013 Silfa
19. lling the modules remove metallic jewelry and use insulated tools during installation Modules produce voltage even when not connected to an electrical circuit or load and have no on off switch Modules can be rendered inoperative only by removing them from sunlight or by fully covering their front surface with cloth cardboard or other completely opaque material or by working with them face down on a smooth flat surface Do not expose the modules to artificially concentrated sunlight Do not stand on drop scratch or allow objects to fall on the modules Do not lift the modules at the connectors or junction box Do not install or handle the modules when they are wet or during periods of high winds 2 2011 2013 Silfab Ontario Inc Specifications in this manual are subject to revisions without notice SAFETY AND INSTALLATION MANUAL FOR PHOTOVOLTAIC MODULES Do not use oil based lubricants on any part of the junction box as this can cause long term damage to the plastics Ensure that wire cable connections are routed in accordance with the junction box manufacturer s recommendations Incorrect routing of the wire cable can lead to stress damage to the junction box Do not leave cable connectors exposed in adverse climatic conditions Water and dust deposits inside the cable connectors can cause long term damage Broken module glass a torn backsheet a broken junction box or broken connectors are electrical
20. ly and strictly follow the instructions Failure to follow these instructions may result in death injury or property damage and possible void of warranty Warning All instructions should be read and understood before attempting to install wire operate and or maintain the module Module interconnects pass direct current DC when exposed to sunlight or other light sources Contact with electrically active parts of the module such as terminals can result in injury or death whether the module is connected or disconnected Avertissement Toutes les instructions devront tre lues et comprises avant de proc der a l installation le c blage l exploitation et ou l entretien des panneaux Les interconnexions des panneaux conduisent du courant continu CC lorsque le panneau est expos la lumiere du soleil ou d autres sources lumineuses Tout contact avec des l ments sous tension du panneau tels que ses bornes de sortie peut entrainer des blessures ou la mort que le panneau soit connect ou non 2 2011 2013 Silfab Ontario Inc Specifications in this manual are subj ect to revisions without notice 523335 SLAA eee ee SAAN SSS SN S Ifa b AN ONTARIO 1 General Information The photovoltaic PV modules SILFAB SLAXXXM3A SLAXXXM SLAXXXP3A SLAXXXP SLA and SLGXXXM3G SLGXXXM SLGXXXP3G SLGXXXP SLG are devices that produce electrical energy by convert
21. on site Lightning protection is recommended for PV systems that are to be installed in locations with high probability of lightning strikes Although Silfab modules are designed to be able to withstand high snow pressure in regions with heavy snowfall in winter select the height of the mounting system so that the lowest edge of the modules is not covered by snow for any length of time 33154 4484 5 5 ONTARIO 8 USE AND MAINTENANCE 8a Intended Use SLA SLG modules are designed for use in grid connected systems They are therefore linked in series parallel combinations to feed a dedicated inverter with a DC input and an AC output of 110V AC 60Hz to provide energy to the local electricity grid 8b Operational Measurements The only two electrical parameters of output from a PV module measurable with conventional instrumentation are the V and 1 When the PV modules are instead connected in series parallel configuration to an inverter from its display it is possible to read e Operational voltage at maximum power output max of the string e Operational current at maximum power output lPmax of the string From these above values it is possible to estimate the voltage at maximum power VPmax of a module in the string under review and any non uniformity in the voltages VPmax of multiple strings connected to the same inverter From the Ipaa for the string it is also p
22. or the back of the module the part exposed might be electrically active and therefore dangerous especially if the module is connected in series to a string 10 2011 2013 Silfab Ontario Inc Specifications in this manual are subject to revisions without notice CELT 4484 5 ONTARIO The junction box does not require any extra field wiring at the terminals Changing wires or modifying any piece of the junction box including the bypass diodes will void the module warranty 7c Electrical Connection Danger Risk of serious injury or death from electric shock or electric arc flash Do not connect or disconnect modules under load Even if the modules are protected against accidental contact under unfavorable conditions high hazardous voltage several hundreds of volts may occur during installation Consequently installation and maintenance of the modules as well as the connection to the main power supply may only be performed by authorized and qualified persons A Before connection of the system to the grid the PV system must be approved for correct installation by an electrician responsible to the operator and the local electricity company 4 The design of the PV system should be done by a qualified person familiar with PV system design The system design is the responsibility of the PV system designer Therefore SILFAB does not assume any liability for how
23. ossible to verify whether there are obvious differences between one string and another When a uniform condition is detected it can be assumed that all the modules are working properly The following measures serve to collect preliminary information on the operational status of the PV modules in a PV system If there is a need to perform direct measurements on individual modules using conventional instrumentation the following action should be taken To measure the open circuit voltage Vec Note even in the presence of an insolation average of 500 W a module exposed to the 2011 2013 Silfab Ontario Inc Specifications in this manual are subject to revisions without notice 13 SAFETY AND INSTALLATION MANUAL FOR PHOTOVOLTAIC MODULES rays of the sun presents at its poles and a Voc very close to the nominal value at STC as shown in Fig 3 e When taking the temperature at which the module is working at that moment into account the open circuit voltage module Vocmoa Will be approximately equal to Vocmod T moa 25 C x 0 125V Where Vocstc IS the open circuit voltage measured at STC e 0 125V C is the average variation of Of a module for a variation in temperature of 1 C e 25 C is the reference temperature of STC e n the case of good solar radiation and at the ambient temperature Tamb one can estimate the temperature of the module as follows
24. pplied by SILFAB Ontario are closely observed and followed These indications are summarised by a series of standard symbols posted in a visible manner on each pallet The list below illustrates the meaning of each symbol DO NOT STACK each pallet of modules is packaged according to the maximum number of modules stackable vertically in order to avoid or reduce mechanical stress or damage as a result of the pressure exerted by the stacked modules Therefore it is absolutely forbidden to stack a pallet on top of another both in the process of shipment and storage of modules DO NOT EXPOSE TO ATMOSPHERIC AGENTS each pallet of modules is suitably dressed in a cap of transparent plastic in order to avoid temporary contact with generic water spray or atmospheric agents The plastic casing does not ensure the protection of the modules in the case of prolonged exposure to atmospheric agents Similarly in the case of flooding the pallet does not ensure the maintenance of the mechanical properties of the weight of the modules For this reason it is recommended to store the pallet in a place that is sheltered and dry In addition as the the junction settee 5 4 box has IP65 degree of protection in the event of a flood the stagnant water inside of the frame could oxidise the metal contacts of the connectors degrading the characteristics and altering the electrical properties of the contacts of th
25. red in relation to those of the other modules of the PV system measured under the same conditions of irradiation The acknowledgment of any obvious discrepancies of 1 the modules thus serves to identify anomalies To avoid the phenomena of electric arcing both the connection and disconnection of the connectors of the modules being tested and the measurements of V and should be performed with the string of modules in conditions of open Circuit In addition the Isc should be measured for each individual module in conditions of open circuit and not to the extreme poles of the string which could be affected by voltages up to 600V NOTE an excess of intensity due to meteorological phenomena for example lightning or mistakes in the connection for example connecting the modules under full irradiance can cause damage or short circuit of the bypass diodes contained in the junction box Asa result the Voc of the module may 2011 2013 Silfab Ontario Inc Specifications in this manual are subject to revisions without notice 14 SAFETY AND INSTALLATION MANUAL FOR PHOTOVOLTAIC MODULES decline in proportion to the damaged diodes to 74NVoc Voc or OV In this case the bypass diodes must be substituted only by Silfab personnel onsite or offsite at Silfab s sole discretion 8c Maintenance Although PV modules do not require any routine maintenance periodic annual inspection for damage to glass and in
26. s in this manual are subject to revisions without notice 8 SAFETY AND INSTALLATION MANUAL FOR PHOTOVOLTAIC MODULES 1000 0 1650 0 850 0 ground connection hole width holes Fig 3a Mechanical drawing of an SLA module showing the mounting holes the drainage holes and the ground connection holes 990 0 25 115 0 1300 0 1970 0 1070 0 mounting holes 450 0 drainage hales 950 0 widrh between mounting holes Fig 3b Mechanical drawing of an SLG module showing the mounting holes the drainage holes and the ground connection holes SAFETY AND INSTALLATION MANUAL FOR PHOTOVOLTAIC MODULES Fig 4a cross section of a mounting clamp to be used for attaching the modules to support structure PPA Ae Fig 4b modules attached to supporting structure rail item 01 using a clamp item 02 fixed with a bolt item 03 and nut item 04 view between two modules Fig 5a allowed positions for fixing SLA modules using mounting clamps 01 04 Fig 4c modules attached to supporting structure side view 0 04 item 05 50mm x 30mm x 24mm 9 2011 2013 Silfab Ontario Inc Specifications in this manual are subject to revisions without notice 523335 BI SAFETY AND INSTALLATION MANUAL FOR ESN PHOTOVOLTAIC MODULES Silfab ONTARIO 7b Handling of Modules The Silfab
27. sing a cutter cut the plastic wrap surrounding the package Remove the plastic wrap Remove the upper cover Recover the flash list for record keeping Using a cutter cut the straps Remove the PV modules and their protective corners without damaging e Collect and store the protective corners and the wooden pallets awaiting recovery by the supplier as described in section 9f Note avoid storing partial packaging Once you have removed the strapping the packaging must no longer be moved 9e Pallet Sheet Each package has a sheet pallet sheet placed in a Visible position and containing some pertinent information such as serial number of each module part number of each module and pallet number All Numbers are readable with a standard bar code reader See Fig 10 below 2 llet sheet Fig 10 Pa 2011 2013 Silfab Ontario Inc Specifications in this manual are subject to revisions without notice SAFETY AND INSTALLATION MANUAL FOR PHOTOVOLTAIC MODULES 9f Recycling Packaging Materials SILFAB undertakes efforts to treat every aspect of production to minimize the environmental impact The packaging is made with materials that for the most part are reusable In particular the wooden pallets Fig 7 and protective corners Fig 8 are to be preserved and returned intact to the supplier SILFAB is a part of the recovery and organizes the return of these materials Pallets and protective corn
28. spection of the electrical connections and for corrosion as well as the mechanical connection is recommended Under normal conditions sufficient rainfall cleaning of the module is not required In extreme climatic conditions the electrical performance of the module may be affected by accumulation of dirt dust or debris on the glass front cover In this case the front cover can be washed using water or commercial glass cleaners alcohol ethanol methanol and a soft cloth Do not use abrasive brushes powders cleaners polishers sodium hydroxide benzene nitro thinners acid or alkali and other chemical substances Doing so may damage the anti reflective coating that is present on the glass of some Silfab modules Most municipal water used as cleaning water however it is not recommended to use water with high mineral content as it may deposit on the glass surface when the water is dry The pressure of the cleaning water should be less than 690Kpa Exercise extreme caution when applying water on any electrical device The module cleaning should be done in the early morning in the evening at night or on rainy days When cleaning in the morning or evening select the period when sunshine is not strong If you need to clear snow to improve output power use a soft brush to gently remove the snow But do not try to remove frozen snow or ice on the modules as it could lead to property damage 45
29. the modules are installed The junction boxes used with SLA SLG modules contain bypass diodes wired in parallel with the PV cell strings In the case of partial shading the diodes bypass the current generated by the non shaded cells thereby limiting the module s heating and performance losses Bypass diodes are not over current protection devices 11 2011 2013 Silfab Ontario Inc Specifications in this manual subject to revisions without notice SAFETY AND INSTALLATION MANUAL FOR PHOTOVOLTAIC MODULES AN n the event of a known or suspected diode failure installers or maintenance providers should contact Silfab Never attempt to open the junction box by yourself Under normal conditions a PV module is likely to experience conditions that produce more current and or voltage than reported at STC Accordingly the values of l and V marked on the module should be multiplied by a factor of 1 25 when determining component voltage ratings conductor current ratings fuse sizes and size of controls connected to the PV output Refer to NEC 690 8 B for an additional 1 25 multiplier that may be required for sizing fuses and conductors V should be increased by a factor according to the lowest ambient air temperatures expected for the installation site Refer to NEC 690 7 for the correct V correction factor according to the respective temperatures If this information is not available a 1 25 multiplying fa
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