Encapsulated Styles 1VA - 500VA • Special Mounting ...

1 Toroidal Transformers for Universal ApplicationSECTION 1 Encapsulated PC Transformers 1VA - 160VA Power Transformers 1VA - Encapsulated Styles 1VA - 500VA Special Mounting ConfigurationsIn Standard Configurations and to Customer SpecificationsntmagneticsnuvotemApplicat ionTALEMA Toroidal Transformers meetmodern day requirements for a smallsize, low magnetic interference fieldtransformer. Featuring a nearly idealphysical construction, the designengineer can expect excellentperformance. Small size and weight(approximately 50% of conventionaltransformers), extremely low noise andlow magnetic interference field make thetoroidal transformer ideal for compactpower supplies.

2 Modern productiontechniques make it possible to producetoroidal transformers at practically thesame prices as conventionaltransformers making them ideal for awide range of applications including: professional audio equipment computers and peripherals video monitors motor controls compact power supplies medical equipment instrumentation office machines industrial control equipment low voltage lightingVolume and weightThe toroidal core has the optimal shapefor producing a transformer with theminimum of material. Because thequality of the core is such a vitalconsideration for sensitive applications,TALEMA has invested heavily to provideextensive core manufacturing, annealingand testing windings are symmetrically spreadover the entire core which makes the wirelength very short.

3 A higher flux densityis possible as the magnetic flux is in thesame direction as the rolling direction ofthe grain orientated core allowingsignificant savings of volume and weight. A higher current density can flowthrough the wire as the whole surface ofthe toroidal core allows efficient coolingof the copper iron losses of the toroidal core arevery small, typically at and 50Hz, giving very smallmagnetizing current, which contributesto the excellent temperature rating of thetoroidal programStandard Distribution:Open wound, Standard and Mini; Encap-sulated; Print & DIN Rail Transformers -230V primary, with ENEC KEMA-KEUR marking (see page 8);Customer standards:Open wound, Encapsulated , Print, DINRail, a wide range of secondary volt-ages and Mounting Styles (see page 6);Specials:per customer specification (see page 5) Power: - per phase Special sizes.

4 Extremely flat or smalldiameter, , up to 250VA with96mm for European formats Electrostatic copper shielding Operating frequencies up to 20kHz Assembled 3 phase sets magnetic shielding Potting in Special housings for sizesup to Secondary voltages available up to1kVTALEMA PROFILEThe TALEMA International Group ofcompanies began in 1975 with theformation of Talema ElektronikGmbH in Munich, Germany. Fiveyears later, in 1980 Nuvotem Teostarted manufacturing in 1988 Talema began productionin India and expanded into theCzech Republic with the formationof TALEMA spol in the TALEMA InternationalGroup, with three manufacturingfacilities and over 1000 employeesin Europe and the Far East, is aworld leader in the manufacture oftoroidal transformers and relatedmagnetic components.

5 The vastmajority of the output, around 85%,is of custom built products althougha comprehensive range of standarddevices is also humBecause there are no air gaps, there areno loose sheets which can vibrate. Inaddition, the high quality of the grainorientated silicone alloyed electric steelmakes the magnetostriction very low,thus allowing the disturbing hum foundin most common types of transformersto be almost completely TALEMA GROUP Toroidal Transformers for Universal Application2 Mounting detailsFor sizes up to 1000VA, a low costassembly can be made with a center-ing washer and a center screw or in the range of 15 VAthrough 500VA can also be potted instandard Polyamid housings. Alltransformers can also be center potted- either with a center hole or with athreaded : All products manufactured bythe Talema Group are RoHS TALEMA Stock Transformers from15VA to 1kVA are delivered with ENECKEMA marking according to EN61558(VDE 0570, EN61558) protection classII, tested with 4500 VAC between primaryand secondary windings.

6 Special typescan be made as safety transformersaccording to EN61558. This EuropeanStandard replaces the generally knownVDE Standard 0570. Additionally. uponrequest we supply toroidals accordingto conventional standards, including UL,CSA and others, for office equipment,data processing, entertainmentelectronics and medical TALEMA GROUP Worldwide Toroidal Specialists3 EfficiencyThe toroidal shape gives a significantlyhigher efficiency compared toconventional transformers of the samesize. The advantage is either anincreased output power with the samesize or a lower weight and smaller sizeat the same output production facilities allow fastdelivery and ensure continuity of supplyto our RecognizedQuality Systems and ApprovalsFactory / Process ApprovalsISO-9001 approved quality systemsensure all internal processes runsmoothly and efficiently, from incomingpurchase orders through ResourcePlanning, Scheduling and Production, tothe delivery of the finished products.

7 NT Magnetics , ISO-9001:2000,Cert. No. 1210024333 Talema Electronic (India) Pvt. Ltd.;ISO-9001:2000, Cert. 9910001047TS 16949:2002, 1211127793/01 TMSISO-14001:2004, 1210427793 TMSP roduct ApprovalsTALEMA-NUVOTEM has numerousapprovals covering a wide variety ofinternational standards, including bothstandard and custom designed parts. Byworking closely with equipmentdesigners and international test houses,the TALEMA Groups engineering teamscan assist in ensuring swift and smoothapproval of equipment using itstransformers and RecognitionsThe TALEMA Group have investedconsiderable time and effort to obtain Family Approvals enabling automaticrecognition of custom transformerswithout having to send each new designto a certified test facility for approval,saving the customer both time Approvals UL506, General ApplicationTransformers - Family approval to3000VA for classes A & BUL File No.

8 E215495 UL544, Transformers for Medical andDental Equipment - Family approvalto 3000VA for classes A & BUL File No. E218027 Insulation Systems with TemperatureClasses B, B1 & F, applicable totransformers for both UL506 , UL544and UL60601- UL File No. 217412 UL1950, Information TechnologyEquipment, including ElectricalBusiness Equipment - 70000K series PCB transformersUL File No. E218027, Vol. 2 UL6500, Audio/Video and Musicalapparatus - 70000K series PCBtransformers - UL File No. E218027,Vol. 2 UL60601-1, Medical Equipment -Family approval to 3000VA forclasses A & B - (UL File No. E251176)EN ApprovalsTALEMA-NUVOTEM has the distinctionof being one of the very few toroidaltransformer manufacturers to have a General Approval of custom designedpower transformers to EN61558.

9 EN61588/VDE0570 - IsolationTransformers (Pri. 440V/Sec. 250V)Family approval and custom designsto 3000VA ( Non Short-circuit proof )Kema No. Safety Isolation Transformers( / Sec. 50V) Family approvaland custom designs to 3000VA ( NonShort-circuit proof )Kema No. Safety Isolation Transformers( / Sec. 50V) Familyapproval and custom designs to300VA ( Non Inherently Short-circuitproof ) Kema No. EN60950/VDE0805/IEC950/UL506/UL1950 - Family approvalfor 70000K PCB Transformers(VDEFile No. 5803/ UL File No. E218027)Talema toroidal transformers canalso be designed to meet thefollowing International Regulations VDE0750 (EN60601, IEC601)Medical and Dental Equipment VDE0805 (EN60950, IEC950)IT installations including officeequipment VDE0860 (EN60065, IEC65)Electrical equipment for domesticuseGermany: Int.

10 +4989-841 00-0 Ireland: Int.+35 374-954 8666 Czech Rep: Int.+420 377 - 338 351 India: Int.+91 427-244 1325 & CurrentDue to lack of air gaps, toroidaltransformers generally have a higherinrush current than normal mains fuses we recommend the useof slow blowing types, especially foroutput power rates in excess of RangeTALEMA Standard Transformers aredesigned for operating frequenciesbetween 48 Hz and 60Hz and operateup to 450 Hz maximum. Withincreasing frequency, the transformersize decreases accordingly. Corematerials for frequencies up to 100kHzare available in materials such as thintape wound nickel alloy, molded powderor sintered autotransformer allows smallerdimensions and a more economical overall design in cases where galvanicallyseparated windings are not required(graph 1)Duty CycleA smaller transformer can be used if theload is intermittent.