Solar Energy Systems
RELAYSSolar EnergySystemsFUJITSU COMPONENTSCONTENTSFujitsu relays for solar applicationsDC voltage versions - AC voltage versions - Latching versionsRELAY PRODUCT LINE UP - SOLAR ENERGY SYSTEMSFujitsu solar relays for a sunny futurePage 1PRODUCT LINE-UPFTR-J2 Page 2FTR-K2W Page 3FTR-F4G Page 4FTR-K2G Page 5FTR-K3-WGFTR-K3-PVPage 6Page 7FTR-K3 latching relaysPage 8Specification overviewPage 9New developmentsPage 13Specification - new developmentsPage 14Solar energy system - relay integrationPage 15Contact detailsPage 16
RELAY LINE-UPDC POWER RELAYS - FTR-J2RELAY LINE-UPSOLAR ENERGY SYSTEMSFTR-J2Solar energy systemsUltra small high voltage DC relayRelaysFujitsu Components recognizes the value and importance of protecting the global environment andstrives to contribute to the creation of a sustainable environment for future generations.Not only does Fujitsu endeavours to reduce the environmental impact of the products throughout theproduct lifecycle, but also designs its products for integration in environment improving appliances.Fujitsu Components’ product range contains power relays that are highly recommended to be used insolar energy systems.With its current relay product range Fujitsu Components Europe has the opportunity to providemultiple solutions for solar energy systems. Fujitsu’s solar relays have two target functions withinthe solar converter. The DC relays, to switch the DC voltage generated by the solar panel, and the ACrelays with big contact gap, to switch the generated electricity to the power grid to provide thenecessary safety “circuit-break-function”.This guide gives an overview of Fujitsu’s relay product line up applicable for solar energy systems andits key features.Fujitsu solar relays for a sunny futurePage 1 of 16The FTR-J2 is one of Fujitsu’s DC relays suitable to be integrated in the solar converter to switch theDC voltage and current generated by the solar panel.Despite the fact that the FTR-J2 relay dimensions are relativelysmall, (the relay measures just 24mm (L) x 23.5mm (W) x27mm (H)), the FTR-J2 relay is capable of switching 450VDC/10A.To be able to switch high DC voltages in these small dimensions,Fujitsu has designed two strong permanent magnets in the relay.This magnetic provision is installed to safely extinguish the severebreaking arc occuring when breaking high DC currents. The FTR-J2is the powerful, compact and reliable solution for solar appliancesthat need to switch high DC voltage and current.The FTR-J2 is a 2 Form A relay that can be used in two differentconfigurations. It can be used in a circuit configurationswitching 2x200VDC and in a configuration switching 1x450VDC.The FTR-J2 can handle an inrush current of 150A (capacitive load). It offers high insulation betweencontacts and coil with an insulation distance of clearance/creepage 6mm, a dielectric strength of4,000VAC and 10,000V surge strength.Application examples Solar systems UPS Fuel CellsFujitsu Components Relay Product Line-upSolar Energy SystemsPage 2 of 16 Battery powered equipment Wireless base stationsFujitsu Components Relay Product Line-upSolar Energy Systems
RELAY LINE-UPRELAY LINE-UPDC POWER RELAYS - FTR-K2WAC POWER RELAYS - FTR-F4GFTR-K2WFTR-F4GThe special feature of the FTR-K2W DC relay is its big contact gap. This double contact relay isdesigned with a total contact gap of 6mm.After introducing Fujitsu’s DC power relay line-up focused on solar energy systems, the coming fivepages will highlight the AC relays. These AC relays within Fujitsu’s product line-up are recommendedto be integrated in the solar converter as a switch to safely disconnect the inverter from the powergrid. Fujitsu offers single side stable and latching type versions.DC relay with 2x3.2 mm contact gapThe FTR-K2W enables remote switching and emergencycut-off of the solar panel.The relay is capable of switching 60V DC, 30A. The highinsulation that the FTR-K2W offers, is shown in the relay’sinsulation clearance 8.0mm/creepage 9.5mm, the5,000VAC dielectric strength and the surge strengthof 5,000VAC.First in line is the FTR-F4G, its main special feature is thecontact gap of 1.5mm. According to the DIN safety standardVDE 0126-1-1 the circuit break function between the solarconverter and the power grid must have a contact gap 1.5mmat each pole. For systems that provide full galvanic isolation;two relay contacts are needed.Like the FTR-J2, the FTR-K2W can be integratedin the solar converter to cut off/pass the DC current.The very big contact gap and powerful switchingcapabilities classify this relay among the safestDC power relays.Application examples Solar converters/panels Base stations (Wimax)Page 3 of 16Relay with 1.5mm contact gapThe FTR-F4G has a 2 form A contact configuration. Itsswitching capability of 250VAC, 5A makes the relay mostsuitable for the solar energy system type with low powerrequirements. The relay contact has TV3 inrush capability. Battery powered equipment UPSApplication examples Solar power system/inverters UPS Office equipmentFujitsu Components Relay Product Line-upSolar Energy SystemsPage 4 of 16 Power generation systems Home appliancesFujitsu Components Relay Product Line-upSolar Energy Systems
RELAY LINE-UPRELAY LINE-UPAC POWER RELAYS - K2GAC POWER RELAYS - K3-WGFTR-K2GFTR-K3-WGFujitsu present the FTR-K2G. The relay has a contact separation of more than 3mm which provides asafe power switching between the main power lines and the equipment providing fulldisconnection.Fujitsu FTR-K3-WG features a wide contact gap of 1.5mm. With this contact gap the relay complieswith the DIN standard VDE 0126-1-1 for integration in solar energy appliances.Power relay with wide contact gapThe FTR-K3-WG is highly recommended to be part of the inverterfunction as a switch between the converter and the power grid.Compared to the early mentioned FTR-F4G relay, the FTR-K3-WG has ahigher contact rating; 25A, 250VAC. Because of its high power therelay is recommended for the larger solar inverter systems.The insulation distance between coil and contacts with a creepageof 8mm offers reinforced insulation. The FTR-K2G features a1 form A contact and is capable of switching 5000VA with a maxswitching voltage of 440VAC. The relay has a high contact capacityof 20A. This powerful relay is recommended for the larger solarpanel systems. Further more the FTR-K2G has a contact with TV8inrush capability. The coil voltage ranges from 5 to 100VDC with adissipation of 1W. The FTR-K2G relay has been designed based onthe need of protection against hazards such as electrical, mechanical,thermal and fire of appliances when operated (complies withIEC 60335-1).The FTR-K3-WG can handle a carry current of 25A. It offers highinsulation between contacts and coil with an insulation distance ofclearance 6.5mm / creepage 9.5mm, a dielectric strength of5,000VAC and 8,500V surge strength.Application examples Solar energy systems Copy machines Power supplyApplication examples Photovoltaic inverters Washing machines Tumble dryers Home entertainment systems Saunas Industrial power supplies Copiers (inter lock circuit)Page 5 of 16FTR-K3 relay with wide contact gapFujitsu Components Relay Product Line-upSolar Energy SystemsPage 6 of 16 Printers OA machines Inter-lock functions(IEC60950-1 .1.0mm contact gap)Fujitsu Components Relay Product Line-upSolar Energy Systems
RELAY LINE-UPRELAY LINE-UPAC POWER RELAYS - FTR-K3-PVAC POWER LATCHING RELAYSFTR-K3-PVFTR-K3 LATCHING RELAYSEco-friendly & energy saving relaysThe FTR-K3-PV can classify itself among the Fujitsu relays that are suitable for integration in solarenergy systems. This AC power relay stands out through its high contact current of 32A.In an answer to the market demand for latching relays, Fujitsu released several new types.The FTR-K3 series have been expanded with two latching versions suitable for solar energy systems,in order to save energy.32A high contact current relaySame as the FTR-K3-WG “solar relay” the -PV version of this serieshas a contact gap of 1.5mm (complying with the DIN standardVDE 0126-1-1 for integration in solar energy systems).The surge strength between coil and contacts of this relay is 6,000V.The dielectric strength between open contacts is 2,500V/1 min. and4,000V/1 min. between coil and contacts. FTR-K3L-PV: The earlier mentioned FTR-K3-PV relay is now availableas a dual coil latching version. The relay offers a 32A high contactcurrent and has a contact gap of 1.5mm. FTR-K3L-WG: Also the FTR-K3-WG is now available in a dual coillatching version. This 1.5mm contact gap relay has a contact ratingof 25A/250VAC and can handle a carry current up to 30A.The relay has a coil power consumption of 1,200mW. The coilholding voltage of the FTR-K3-PV can be reduced to 45% of thenominal coil voltage (ambient temp. 85 C, contact current 32A).The coil holding voltage contributes to energy saving of theapplication when using PWM coil drive.Application examples Solar energy systems Smart meters Copy machinesPage 7 of 16Both relays feature a big contact gap which qualify them to besuitable for solar energy applications according the DIN safetystandard VDE 0126-1-1.Latching relays offer low power consumption and low heat generation. An energy saving latchingrelay is cost efficient and at the same time eco-friendly. Printers Power supplyApplication examples Solar power system/inverters UPS Office equipmentFujitsu Components Relay Product Line-upSolar Energy SystemsPage 8 of 16 Power generation systems Home appliancesFujitsu Components Relay Product Line-upSolar Energy Systems
RELAY LINE-UPSPECIFICATIONRELAY pRating (NO)Rating (NC)Continuous current1 form A2.0mm10A / 450VDC12AMax. switching voltage 450VDCMax. switching power 4,500WCoilNominal power1.06WNominal voltage5 . 110VOperate voltage70% of nominalAmbient temperature -40 - 85 CLifeMechanical2,000,000 ops.Electrical (at rating) 10,000 ops.Insulation (at 500Vdc)1,000MohmDielectric Open contacts1,000VACstrength Adjacent contactsCoil - contacts4,000VACPC board layoutDimensions mm (WxLxH)Page 9 of 16Series nameDC2 form A1.0mm10A / 200VDC12A200VDC2,000W0.53W5 . 110V70% of nominal-40 - 85 C2,000,000 ops.10,000 0FTR-K2W1 form A6.0mm30A / 60VDC30A72VDC1,800W2.00W5 . 48V65% of nominal-40 - 70 C1,000,000 ops.10,000 ops.1,000Mohm2,000VAC5,000VAC34.9x36.5x30.2Fujitsu Components Relay Product Line-upSolar Energy SystemsSeries nameACItemContactArrangementGapRating (NO)Rating (NC)Continuous currentMax. switching voltageMax. switching powerNominal powerNominal voltageOperate voltageAmbient temperatureLifeMechanicalElectrical (at rating)Insulation (at 500Vdc)Dielectric Open contactsstrength Adjacent contactsCoil - contactsPC board layoutCoilDimensions mm (WxLxH)Page 10 of 16FTR-F4GFTR-K2G2 form A1.5mm5A / 250VAC5A400VAC1,250VA0.80W5 . 48V75% of nominal-40 - 70 C500,000 ops.100,000 ops.1,000Mohm1,000VAC3,000VAC5,000VAC1 form A3.0mm20A / 250VAC25A400VAC5,000VAC1.10W5 . 110V65% of nominal-40 - 70 C1,000,000 ops.100,000 .0x28.0Fujitsu Components Relay Product Line-upSolar Energy Systems
RELAY LINE-UPRELAY es nameACFTR-K3-PVItemFTR-K3L-WGSeries nameACFTR-K3L-PVLatching relaysContactArrangementGapRating (NO)Rating (NC)Continuous currentMax. switching voltageCoilMax. switching powerNominal powerNominal voltageOperate voltageAmbient temperatureLifeMechanicalElectrical (at rating)Insulation (at 500Vdc)Dielectric Open contactsstrength Adjacent contactsCoil - contactsPC board layoutDimensions mm (WxLxH)1 form A1.5mm25A / 250VAC25A250VAC6,250VAC0.78W5 . 48V70% of nominal-40 - 85 C * 12,000,000 ops.100,000 ops.1,000Mohm2,500VAC5,000VAC1 form A1.5mm32A / 250VAC32A250VAC8,000VA1.20W5 . 48V70% of nominal-40 - 85 C * 21,000,000 ops.30,000 .7x23.3ContactArrangementGapRating (NO)Rating (NC)Continuous currentMax. switching voltageCoilMax. switching powerNominal powerNominal voltageOperate voltageAmbient temperatureLifeMechanicalElectrical (at rating)Insulation (at 500Vdc)Dielectric Open contactsstrength Adjacent contactsCoil - contactsPC board layoutDimensions mm (WxLxH)1 form A1.5mm25A / 250VAC25A250VAC6,250VA0.9W5 . 24V80% of nominal-40 - 85 C1,000,000 ops.100,000 ops.1,000Mohm2,500VAC5,000VAC1 form A1.5mm32A / 250VAC32A250VAC8,000VA1.20W5 . 24V80% of nominal-40 - 85 C1,000,000 ops.30,000 .7x23.3* 1 Coil holding voltage when 40 to 80% of nominal coil voltage is applied.* 2 Coil holding voltage when 45 to 80% of nominal coil voltage is applied.Page 11 of 16Fujitsu Components Relay Product Line-upSolar Energy SystemsPage 12 of 16Fujitsu Components Relay Product Line-upSolar Energy Systems
RELAY LINE-UPRELAY LINE-UPAC POWER RELAYS - NEW DEVELOPMENTSSPECIFICATIONSolar relaysItemNew developmentsFTR-K3-WSSeries nameACFTR-K3-PSThrough continued research and development Fujitsu keeps expanding its product range. Fujitsulistens to the needs and requirements of the market, together with its wealth of knowledge andexperience Fujitsu knows how to develop solutions accordingly to today’s solar market requirements.Fujitsu’s new developments suitable for solar energy systemsFujitsu developed two new versions of the FTR-K3 series; the FTR-K3-WS and the FTR-K3-PS.Contact FTR-K3-WSThis high capacity 25A relay has a special feature with a contact gap of 1.8mm (complies withIEC62109-2*). The relay provide a low coil power consumption of 1,200mW and offers a mechanicallife of min. 100k operations. FTR-K3-PSThis relay is also equipped with a contact gap of 1.8mm. Beside this wide contact that complies withthe IEC62109-2* for integration in solar energy systems provides the FTR-K3-PS a contact current of32A (coil power is 1,200mW).Page 14 of this booklet shows more specifications of the FTR-K3-WS and FTR-K3-PS.* IEC62109-2:Per the IEC62109-2 table 12 of part I, the impulse transient over voltage withstand rating for a relay switching theAC side of a 1000Vdc PV is 4464V. This means a clearance of 3.58mm air gap is necessary. For fail safe reasons, itis necessary to divide the air gap between 2 similar relays providing a total air gap of 3.58mm.ArrangementGapRating (NO)Rating (NC)Continuous currentMax. switching voltageCoilMax. switching powerNominal powerNominal voltageOperate voltageAmbient temperatureLifeMechanicalElectrical (at rating)Insulation (at 500Vdc)Dielectric Open contactsstrength Adjacent contactsCoil - contactsPC board layoutDimensions mm (WxLxH)Page 13 of 16Fujitsu Components Relay Product Line-upSolar Energy SystemsPage 14 of 161 form A1.8mm25A / 250VAC25A250VAC8,000VA1,200mW5 . 48V70% of nominal-40 - 85 C100,000 ops.30,000 ops.1,000Mohm2,500VAC5,000VAC1 form A1.8mm32A / 250VAC32A250VAC8,000VA1,400mW5 . 48V70% of nominal-40 - 85 C100,000 ops.30,000 .7x23.3Fujitsu Components Relay Product Line-upSolar Energy Systems
RELAY LINE-UPSOLAR SYSTEM RELAY APPLICATIONRELAY LINE-UPCONTACT DETAILSSOLAR ENERGY SYSTEMIntegration of Fujitsu relaysPhotovoltaic inverterMore informationContact detailsOver the years Fujitsu Components has made its name on the component and device market with acomplete product line-up adapted to the requirements of the market.Fujitsu Components’ product experts have built a wealth of knowledge through their years ofexperience. They are pleased to share their knowledge and offer technical support.Would you like to know more about Fujitsu relays suitable for solar energy systems?Contact Fujitsu via telephone at 31 (0)23 556 0910 or by email info@fceu.fujitsu.com.Visit emea.fujitsu.com/components to download relay datasheets.Micro-inverterPage 15 of 16Fujitsu Components Relay Product Line-upSolar Energy SystemsPage 16 of 16Fujitsu Components Relay Product Line-upSolar Energy Systems
EUROPE, MIDDLE EAST AND AFRICAHeadquartersFUJITSU COMPONENTS EUROPE B.V.Diamantlaan 252132 WV HoofddorpThe NetherlandsPhone: 31-23-5560910Fax: 31-23-5560950Email: info@fceu.fujitsu.comWebsite: emea.fujitsu.com/components/THE AMERICASHeadquartersFUJITSU COMPONENTS AMERICA, INC.250 E. Caribbean DriveSunnyvale, CA 94089USAPhone: 408-745-4900 / 800-380-0059Fax: 408-745-4971Email: components@us.fujitsu.comWebsite: us.fujitsu.com/components/PRINCIPAL OFFICES OFFUJITSU COMPONENTSJAPANHeadquartersFUJITSU COMPONENT LIMITEDGotanda-Chuo Building3-5, Higashi-Gotanda 2-chomeShinagawa-kuTokyo 141-8630JapanPhone: 81-3-5449-7010Fax: 81-3-5449-2626Email: promothq@fcl.fujitsu.comWebsite: http://www.fcl. fujitsu.comASIA PACIFICHeadquartersFUJITSU COMPONENTS ASIA PTE LTD.102E Pasir Panjang Road#01-01, Citilink Warehouse ComplexSingapore 118529Phone: 65-6375-8560Fax: 65-6273-3021Email: fcal@fcal.fujitsu.comWebsite: sg.fujitsu.com/components/ChinaFUJITSU ELECTRONIC COMPONENTS(Shanghai) Co., LTD.Room 3106E, Bund Center,222 Yan An Road (East)Shanghai 200002 PRCChinaPhone: 86-21-63352560Fax: 86-21-63352080Hong KongFUJITSU COMPONENTSHONG KONG CO., LTD.Suite 913, Ocean Centre5 Canton Road, TSTKowloonHong KongPhone: 852-2881-8495Fax: 852-2894-9412Taiwan, Republic of ChinaFUJITSU COMPONENTS ASIA, LTD.13th EI, No. 178, Min Chuan E. Rd, Sec.3TaipeiTaiwanPhone: 886-2-2546-7587Fax: 886-2-2546-8587Published byFujitsu Components Europe b.v.Diamantlaan 25, 2132 WV Hoofddorp, The NetherlandsCopyright: Fujitsu Components Europe b.v. 2012Printed in The NetherlandsOrder No.:RL-SOLAR-MARCH 2012Contact: info@fceu.fujitsu.comAll rights reserved, including rights created by patent grantor registration of a utility model. All designations used in thisdocument may be trademarks, the use of which by third partiesfor their own purposes could violate the rights of their owners.We reserve the right to make modifications.emea.fujitsu.com/components
solar energy systems. With its current relay product range Fujitsu Components Europe has the opportunity to provide multiple solutions for solar energy systems. Fujitsu’s solar relays have two target functions within . the solar converter. The DC relays, to switc
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4. Solar panel energy rating (i.e. wattage, voltage and amperage). DESIGN OF SYSTEM COMPONENTS Solar Panels 1. Solar Insolation Solar panels receive solar radiation. Solar insolation is the measure of the amount of solar radiation received and is recorded in units of kilowatt-hours per square meter per day (kWh/m2/day). Solar insolation varies .
responding to the solar direction. The solar tracker can be used for several application such as solar cells, solar day-lighting system and solar thermal arrays. The solar tracker is very useful for device that needs more sunlight for higher efficiency such as solar cell. Many of the solar panels had been
There are three types of solar cookers, solar box cookers or oven solar cookers, indirect solar cookers, and Concentrating solar cookers [2-10]. Figure 1 shows different types of solar cookers namely. A common solar box cooker consists of an insulated box with a transparent glass or plastic cover that allows solar radiation to pass through.
The Solar Energy System Disclosure Document and Solar Contract: What You Need to Know Solar Energy System Disclosure Document The Solar Energy System Disclosure Document is a standardized document created by the Contractors State License Board (CSLB). By law, a solar provider must give you a Solar Energy System Disclosure
munity solar provides an alternative to residential solar for customers who cannot host solar installations 1 Solar Energy Industries Association. (2016). \U.S. Solar Market Insight". 2 U.S. Energy Information Administration (2016). \How much electricity is lost in transmission and distribution in the United States?" U.S. Department of Energy.
to liquid and store solar energy; during liquid to solid it will release absorbed solar energy. 1.1 Solar still operation A solar still used for converting brackish/saline water into potable water using solar energy is called solar still. It con-sists of a shallow blackened basin of saline water covered with a sloping transparent roof.
