Photovoltaic Junction Box1Affixing thebase partThe particularly easy, fast and safe installation is the main feature ofWeidmüller’s new photovoltaic junction box – for manual as well as for fullyautomated production processes.Only three small work steps are necessary to mount the two-piece housingat the rear side of the solar panel and to connect the solder ribbons. PhotovoltaicJunction BoxThe first step is to affix the ribbon carrier near the solder ribbons.This is done by means of a prefixed adhesive pad that furthermore onlyneeds removal of the protective sheet. The fact that the Weidmüller systemdoes not require exact positioning may be extra helpful.+3212Positioning thesolder ribbonsThe second step is to position the solder ribbons of the PV module ontothe contact blades of the ribbon carrier.Once again, manual mounting is made easy:Separating webs between the solder ribbons allow a clear positioning,although it is not necessary to be meticulous.In case of fully automatic assembly these easy process steps only involveminor programming work and thus obviously less costs for the equipmentof automation machinery than other systems.PhotovoltaicJunction Box+3213Installingthe junctionhousingThe last work step is to fix the upper part of the housing onto the ribboncarrier. The certified housing is completely equipped with all necessaryoutgoing feeders.Affixing the junction box and connecting the solder ribbons in asingle operation.Silicone material in a specific flute is intended for fixing and sealing(a double-sided adhesive pad, however, would do as well).Pilot skids allow the reliable allocation of the tulip contacts in the upperpart of the housing onto the positioned solder ribbons.No extra work step for the connection of the solder ribbons and outgoingfeeders – no extra soldering.• Optimised for manual as well as automated mounting• Huge time savings because, in comparison to other systems, it is notnecessary to await the curing process of the silicone between affixingthe carrier and connecting the solder ribbons.• Simple and reliable mounting with a perfect align fixture• It is not necessary to open the box (not even to grout the electronics)• Compact design• Plugs and cables are available according to customer specifications PhotovoltaicJunction Box+321cl ic k+Easy and reliablemaintenanceThe necessary maintenance (e.g. in case of a defect cable due to damage done by rodents) can be provided easily, quickly and reliably:After having released the safety latch (screwdriver), the upper part of the box, including the connection cable and the electronic components, can completely be removed and replaced by a new unit. It is not necessary to release and re-fasten the contacts neither to the photovoltaic module nor to the outgoing feeders. Just put on the new unit that has already been tested according to all necessary functions and – you are done.In case of failure the installer only needs one spare part – of course already equipped with a new sealing.Time saving – easy – faultlessAs there is no intervention regarding the contacts or the cable connection, and as improper opening of the junction box is impossible you can always be sure to achieve optimum results (which is important when granting guarantees).Photovoltaic Junction Box+321+acbedPhotovoltaic Junction BoxRight down to the smallest detailWeidmüller has developed an excellent connection system for solar panels not only with regard to mounting and service. Each single detail of the junction box was subject to the quest for an optimum solution.Better safe than sorry!The innovative, patented cable entry with its self- locking strain relief provides secure hold even in case of extreme tensile forces.• No unintentional manipulation in the field• Extremely cold-resistant (the sealing remains flexible up to -40°C)• No problems with cable seals due to improper fixing of the strain reliefThe junction box is ready for the fixation of a cable reel – this is important for applications in fully automated production processes.The housing of the TÜV Rheinland certifiedphotovoltaic junction box is made of UV-resistant, non-halogen plastic material. It has been developed according to all relevant and valid norms and standards:DIN V VDE V 0126-5/05.2008, prEN50548 (Dec. 2009)UL (1703), CE conformity declaraionThe sophisticated design of the housing allows optimum heat conduction.At the same time the air volume inside the junction box was reduced to a minimum in order to prevent the collecting of condensate from the beginning. A breathable, high-performance membrane addi-tionally provides ventilation and dehumidification.The ribbon carrier of the junction box has a flexible design.The flexible design prevents friction at the contact surfaces of the individual components due todifferent thermal expansion coefficients – no fretting corrosion. Micro-fretting causes higher contact resistance.+321d b caf +hk g i100% qualityAll electrical functions and characteristics aresubject to permanent control during theproduction process. Aside from high-qualitymaterials and latest technologies, this securesthe high quality of each single photovoltaicjunction box by Weidmüller.Tulip contacts with 4 contact points each for theoptimum connection of the solder ribbons.• Low contact resistance – thus low heat loss• Independent spring contacts (stainless steel)– separation of force and electricity• No solderingA radial seal made of high-temperature resistingsilicone with low-temperature flexibility – ensuringIP65 protection during the complete product life.O-ring concept – no pressure on the seal whenclosing the box (like with head seals) which mightentail a lower protection level in case of materialfatigue.Application of low-loss, high-performance diodeswith little heat production (about 40% less thanwith radial diodes) – thus extending the lifespan.The low heat development also increases theefficiency of the wavers lying above (less powerloss) – thus effectively increasing the energy yield.Weidmüller’s tested and proven tension clampconnection technology for the connection of theoutgoing feeders.• Longevity• Low contact resistance• Absolutely vibration-proof• No solderingThe complete switching of the solder ribbons iseffected via a printed circuit board. This guaranteeshigh flexibility and the most easy realisation of avariety of connections.• Continuous reflow technology• SMD design diodes• High heat conduction – no hot spots PhotovoltaicJunction Box+321f g hikfiFor moreinformation… about Weidmüller’s photovoltaic junction box please refer to:/pv-junction-box• Technical information• Data sheets for different variants• Presentations/videos related to handling and mounting• Pdf-version of the leafletWeidmüller Schweiz AG Telephone +41 52 674 07 07www.weidmueller.chWeidmüller GmbH & Co. KGTelephone +49 5231 1428-0www.weidmueller.de Weidmüller GmbH Telephone +43 2263 6708-0www.weidmueller.at Order number:1203470000/04/2010/SMMW。