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small size most toroids are smaller than their e-i transformer counter- parts. electrical and mechanical designers appreciate a toroids compact dimensions. they are particularly well suited where low height is a consideration. low stray magnetic field toroids have no airgaps: primaries and secondaries are wound uniformly around the entire core. as a result, toroids emit very low radiated magnetic fields. this makes the toroid ideal for applications involving high sensitivity circuitry. low mechanical hum the core of a toroid is formed from a single strip of grain-ori- ented electrical grade silicon steel tightly wound in the form of a clock spring with the ends spot-welded in place. the copper wire is wound over polyester film, forming a silent, stable unit without the use of environmentally unfriendly glues or varnishes. flexible dimensions compounding the benefits of low weight and small size is the flexibility to vary dimensions. because amveco is not tied down to core caps or lamination sizes, the height and diameter of our toroids may be economically varied to accommodate equipment design requirements. the advantages and benefits of using amveco toroidal transformers on this page you can learn about the advantages and benefits of using our toroidal transformers. first we would like to list four features that are unique to amveco and its line of toroidal transformers. four features that you will surely benefit from. ? amveco is an iso 9001 registered company ? amvecos transformers use only flameretardent material (ul 94-v2) ? amveco offers lifetime warranty for its products ? amvecos transformers are recognized to several ul standards and certified by csa as well as tuv for medical applications. low weight because they are more efficient, toroids can be up to 50% lighter, (depending on power rating), than conventional lami- nated transformers. low weight simplifies end product design by reduc- ing mounting hardware and supporting enclosure requirements. low no-load losses compared to conventional e-i transformers, toroids exhibit extremely low no-load losses. in applications where a circuit is in a stand-by mode for long periods, the potential cost reduction for power can be significant, sometimes 80-90% lower. high efficiency due to its unique construction, toroids are typically between 15 and 30% more efficient than the conventional type. as a rule; the larger the transformer - the more efficient it becomes. low operating temperature since most of the losses in a toroid are in the copperwire, the toroid cools off quicker than the conventional e-i type with more iron. at half the load, the toroids temperature rise is only about 30% of what it is at full load. easy to mount a single center screw easily and quickly mounts the toroid, avoiding costly mechanical design and practical problems associ- ated with conventional e-i-laminated transformers..., and three screws are eliminated at assembly! high performance products for your high performance applications. amveco magnetics, inc. ? 10401 westoffice dr. ? houston, tx 77042 ? (800) 527-7042 ? (713) 977-2500 ? fax: (713) 977-5031 ? email: sales@amveco.com ? www.amveco.com 1
features, advantages and benefits of toroidal power transformers 1 serving a broad range of industries 3 value added assembly service 3 engineering support 4 interactive website design service 4 documented reliability (iso 9001 and safety standards) 5-6 amveco construction data 6 technical data and application notes 7-14 reference guide for size and losses 11 customer specification sheet 12 toroidal mounting methods 13-14 considerations when using toroidal power transformers 15 standard design transformers for 117v/60hz applications 16 standard design transformers for 2x117v/50-60hz applications 17 standard design medical grade high isolation transformers 18 custom designed auto-transformers and three-phase transformers 19 current sensing transformers 20 low profile pc mount transformers 21 low profile miniature transformers 23 amveco standard series inductors 25 copy of amvecos iso 9001 certificate 26 table of contents amveco magnetics, inc. ? 10401 westoffice dr. ? houston, tx 77042 ? (800) 527-7042 ? (713) 977-2500 ? fax: (713) 977-5031 ? email: sales@amveco.com ? www.amveco.com 2
higher level assembly amvecos higher level assembly services deliver products one step closer to production. this approach can save you time and money while amvecos in-house tooling and testing capabilities ensure prompt deliv- ery of high quality products ready for your final assembly. complimentary products amveco also designs and produces standard and custom inductors, current transformers and auto transformers. all custom components are designed and manufactured to meet customer specifications and are also subjected to the same demanding manufacturing standards used in the production of our toroidal transformers. these complimentary products have been developed, and will continue to be developed, in response to your needs. the superior/cost-effective toroid amvecos state-of-the-art manufacturing processes have made the use of toroids cost-effective across a broad spectrum of applications. toroids are routinely replacing laminated frame types in the most demanding industry applications, including: medical, telecommunica- tions, instrumentation, test equipment, lighting and signs, process control, office and computer peripherals, audio and broadcast, as well as many others. 3 amveco magnetics, inc. ? 10401 westoffice dr. ? houston, tx 77042 ? (800) 527-7042 ? (713) 977-2500 ? fax: (713) 977-5031 ? email: sales@amveco.com ? www.amveco.com serving a broad range of industries
we are here to serve you our engineers want to be part of your power supply design group. well show you how you can optimize your products appearance and perfor- mance and reduce total cost. since most of our products are custom designed, our work begins with a customer inquiry. together with a customers engineers, we determine the ac line, ac or dc load requirements and other user-specific condi- tions. with state-of-the-art proprietary cad programs, our engineers quickly generate preliminary designs. often in a matter of hours, if needed. our tested and proven in-house software programs enable us to simulate optimum performance characteristics from your data. all of our design proposals are accompanied by a price quotation. you can then order a prototype for your evaluation, or select from our extensive inventory of standard toroids. you incur no expense until you place an order. amveco can respond quickly and effectively to meet your needs because we have experienced people to assist you at every step, from the factory to the field. expert application and product engineers can work with you from initial development through final delivery. our knowledgeable cus- tomer service personnel utilize fully computerized processing systems for prompt, reliable service. our representative organizations are strategically located to meet your needs nationwide. web site design service to evaluate the feasibility of toroidal power transformers for specific appli- cations, amveco has established an interactive web site. you need only type in user-specific transformer modeling data. the interactive program will respond with specific toroid possibilities and prompt you on how to obtain your amveco transformer. our engineers will be glad to validate your design. 4 amveco magnetics, inc. ? 10401 westoffice dr. ? houston, tx 77042 ? (800) 527-7042 ? (713) 977-2500 ? fax: (713) 977-5031 ? email: sales@amveco.com ? www.amveco.com dedicated engineering support
expert certification guidance amveco can also provide test data and construction documentation required by regulatory agencies. the major agencies throughout the world have already tested our standard lines and certification for most toroid applications is on hand, including ul, csa, tuv and ce marking is an available option. iso 9001 certified qualit y system with iso 9001 certification as a cornerstone, since 1992, amvecos quality policy represents a never-ending process that involves the commitment of every employee. this commitment is proven every day, at every step in the manufacturing process through delivery of our products to you. safet y standards amveco proudly holds certificates from both north american and international safety standard testing laboratories in addition to having its factory certified to iso 9001. family approvals (recognitions) which eliminate the need to send new designs for destructive testing. ? ul 506 general purpose transformers (file # e 122978) ? ul 1411, audio, radio and television products (file # e 115143) ? ul 1950 information technology equipment, electrical business equipment (file # e 138299) ? ul 544/ul 2601 medical and dental equipment (file # e 138299) ? ul 1446, class b, class f and class h insulation systems (file # e 123069) ? csa 22.2 no. 66-1988 specialty transformers (file # lr 86989) ? csa 22.2 no. 601.1 m90 medical standard for canada (file # e 138299) ? iec 601.1 (medical standard for international installations) ? en 60601 medical standard for european installations ? en 60742/en 61558 european safety standard for general purpose transformers amveco maintains an active policy to invest in family approvals of different domestic and international safety standards in direct response to market needs and to better serve its customer base. 5 amveco magnetics, inc. ? 10401 westoffice dr. ? houston, tx 77042 ? (800) 527-7042 ? (713) 977-2500 ? fax: (713) 977-5031 ? email: sales@amveco.com ? www.amveco.com documented reliabilit y
electrostatic shield (customer specified) ? reduces capacitive coupling between primary and secondary windings ? copper foil (2 mil) laminated between polyester film and tape ? tightly wound over primary insulation primary to secondary insulation ? polyester film-class b (130?c) ? four layers minimum between windings ? meets test requirement of 4000v rms for 1 minute between primary and secondary windings ? base coat of polyester. heavy topcoat of amide imide (200?c) ? wound uniformly over entire core ? better heat dissipation ? windings configured for minimum flux leakage ? low voltage maintained between adjacent turns thermal protection (customer specified) ? usually in primary circuit ? normally closed-auto reset opens at high temperature ? one-shot fuse also available ? ul, csa, vde listed components core insulation ? all cores: 100% surface coverage of four layers of 2 mil polyester film class b (130?c) ? protects, insulates and cushions the core from windings and reduces vibration core ? cores are manufactured and annealed in-house, under controlled conditions ? continuous tightly wound grain oriented silicon steel... no airgaps, no mechanical noise ? lathed radial corners... compact design, most efficient use of materials ? no core caps necessary magnetic shield (customer specified) ? multiple layers of grain oriented silicon steel tightly wound around the toroids circumference ? fixed in place by outer insulation outer insulation ? tape wound type: standard two layers polyester film class b (130?c) ? magnetic enclosures optional center hole potting (customer specified) ? thermoplastic material ? high mounting precision ? threaded insert or press fitted stud is optional ? thermally conductive compound available wire leads ? choice of two types of leads connected to windings: *self leads: the magnet wire is extended through sleeving for connection to circuit. standard: class a (105?c) *stranded wire leads: class a (105?c) - class h (180?c) ? each lead anchored to toroid body with high tensile strength tape to withstand severe pull test ? primary leads covered with second layer of sleeving - double insulation... standard on all units ? color, length, stripping and terminations can be customer specified unmatched qualit y/unparalleled service power system design engineers have come to recognize amveco as the leading manufacturer of custom toroidal power transformers and inductors. over the years since 1982, we have built a reputation for excellence by focusing on design engineering state-of-the-art production capabilities and customer support services. our quality management system has been iso 9001 certified since 1992. when you select amveco for your power transformer needs you acquire a team of experienced professionals that offer assistance from design to delivery and beyond. one simple fact verifies our quality claims: our customers stay with us year after year and continue to trust us with their new product needs. in addition to class a insulation system, amveco offers class b (130?c), class e (120?c), class f (155?c) and class h (180?c). amvecos unique method to protect the wire from the sharp corners of the core during the winding operation permits unlimited choice of core size to best meet the customers available space. other methods include use of plastic end caps or dipping the core in epoxy. amveco can offer these methods too, if preferred by the customer. qualit y to the core
the first toroid patent dates back to 1884. however, its only during the past thirty years, as amveco and its pre- deccesors developed practical manufacturing techniques, that large numbers of toroids have been applied in wide varieties of electrical and electronic products. the usage of toroids has grown rapidly because of the many features that permit new and innovative product designs. the following is a discussion of various aspects of toroidal transformer technology that will be useful to design engi- neers contemplating their application in new or existing equipment. custom designs for oem applications unlike their e-i counterparts, toroids lend themselves to custom applications because toroidal designs dont require the use of special costly tools, such as stamping dies (required for special lamination forms). upwards of 95% of amvecos volume is consumed by custom products. small size through reduced core and copper losses from faradays equation for induced voltage in a transformer winding, we derive the following practical equation: e rms = 4.44 x f x n x b x a x 10 -8 e rms = induced voltage in winding f = f requency (hz) n = winding turns b = flux density a = core cross section (cm 2 ) increasing the working flux density will permit a lower number of turns and/or a smaller cross sectional core area. experience has shown that working flux densities of 16k to 18k gauss can be used in toroids. working flux densities of 12k to 14k gauss are the practical limits for typical laminated cores with airgaps. thus, selecting a toroid may directly reduce core material (weight) or winding turns (copper losses). flexible dimensions as long as the cross sectional area of the toroidal core is held constant, the height and diameter may be varied to meet the designers requirement. the functional optimum diameter-to-height ratio is 2:1. for modern equip- ment design emphasizing a low profile, a 3:1 ratio, wider diameter and lower height may be more suitable. in cases where a smaller footprint is desired, a 1.5:1 ratio should be considered (narrower diameter, higher profile). the only restrictions are those of the mechanical considerations of insulation and winding machinery. a minimum center hole must be maintained in order to permit the insertion of the winding machine shuttle into the center hole of the core. reduced size reduction through dut y cycle a significant reduction in transformer size and weight may be realized in many cases where the transformer is loaded intermittently. in such cases, the load is energized for a small portion of the period. if the loaded period is much shorter than the overall thermal time constant of the transformer, the following equation applies: 7 amveco magnetics, inc. ? 10401 westoffice dr. ? houston, tx 77042 ? (800) 527-7042 ? (713) 977-2500 ? fax: (713) 977-5031 ? email: sales@amveco.com ? www.amveco.com technical and application notes dutu cycle information example: 750 va load that is only utilized 15 seconds each minute. pnom = 750 15/60 pnom = 750 .25 pnom = 750 x .5 pnom = 375va
8 amveco magnetics, inc. ? 10401 westoffice dr. ? houston, tx 77042 ? (800) 527-7042 ? (713) 977-2500 ? fax: (713) 977-5031 ? email: sales@amveco.com ? www.amveco.com technical and application notes (continued) regulation the load regulation of toroidal power transformers is expressed by the following equation: %reg = [(e oc - e fl ) / e oc ] x 100 e fl = f ull load voltage e oc = no-load regulation may be improved by using larger diameter wire in the wind- ings or a larger core. this technique is accompanied by a slight increase in size and cost. voltage drop (%) toroid efficiency the following graph illustrates the effect of increasing load on the effi- ciency of a toroid for various power ratings. temperature rise considerations total losses for the transformer, including winding losses and core loss at a given flux level, may be calculated from design data and data furnished by steel suppliers. at amveco, our toroids are ordinarily designed to render a 60?c to 65?c temperature rise. the graph below illustrates the rise in transformer temperature as the actual power approaches and then exceeds the transformers nominal power rating. careful consideration must be given to the expected load conditions. stray field data
line frequency our standard transformers are designed to operate in 50 or 60hz circuits. upon request, we furnish toroids with thinner laminations for operation at frequencies to 2khz. for even higher frequencies, cores are chosen from such composite materials as ferrite or powdered metal. applying toroids to rectifier power supplies when used in rectifier circuits, the advantages of toroids may be opti- mized if consideration is given to how they are applied. ac current in the transformers secondary is not only influenced by the dc load current, but, just as important, by the circuit configuration. common circuit configurations are shown as follows: full wave bridge (fwb) full wave center tap (fwct) full wave center tap (fwct) with choke input full wave bridge tap (fwct) with dual outputs 9 amveco magnetics, inc. ? 10401 westoffice dr. ? houston, tx 77042 ? (800) 527-7042 ? (713) 977-2500 ? fax: (713) 977-5031 ? email: sales@amveco.com ? www.amveco.com technical and application notes (continued) form factor (k) i l(dc) = dc current load i s(ac) = rms current in secondary = kxi l(dc) k = form factor associated with circuit type the form factor (k) is related to the rectifier circuit configuration and the wave form of the current in the secondary. i ac = k x i dc typical form factor (k) values at capacitor input filter: rectifier type form factor (k) fwb 1.8 fwct 1.3 fwct with choke input 0.7 fwct with dual outputs 1.8 amveco employs computer aided design techniques to optimize the toroidal transformer parameters. our computer program takes into account the influence of the circuit form factor (k) as shown above. when preparing specifications for toroids, it is important that the capaci- tor value and the voltage drop across the regulator (if any) is furnished. in some high current applications, a choke input filter will compound savings because inductors yield a lower form factor (k). in these circuits, the size of the transformer and the total capacitance are both reduced.
10 amveco magnetics, inc. ? 10401 westoffice dr. ? houston, tx 77042 ? (800) 527-7042 ? (713) 977-2500 ? fax: (713) 977-5031 ? email: sales@amveco.com ? www.amveco.com height 4.7" (119 mm) 2.2" (56 mm) width 3.9" (99 mm) 4.5" (114 mm) depth 4.3" (109 mm) 4.5" (114 mm) volume 78.8 sq. in. (508.4 cm 2 ) 35.0 sq. in. (225.8 cm 2 ) dimensional limited by all dimensions can adaptability available dies be adjusted weight 10 lb. (4.5 kg) 5 lb. (2.3 kg) mounting four corner bolts single bolt requirements through center magnetizing 10.0 w 1.5 w current no-load loss 20.5 mw 0.6 mw continuity of 50% of grain 100% parallel magnetic path perpendicular grain orientation air gaps approximately 180 none (60 laminating x 3) magnetic affected by clamping optimized prior to properties welding, banding, etc. winding and remain of core stable coupling factor limited by bobbin maximized by even width and layers winding distribution of windings & close proximity to core long-term thermal cycling and lifetime warranty reliability vibration steadily degrade performance feature e-i core transformer amveco overall comparison of 250 va e/i-core amveco isolation transformer vs. 250 va e-i core isolation transformer comparison data weight comparison: toroid vs. e-i transformer
? quick response to requests for quotations ? rapid delivery of prototypes ? pre-certified by electrical safety agencies: ul and csa ? variety of mounting arrangements ? lifetime warranty nominal copper core a b weight a b weight power losses (2) losses inch inch lb inch inch lb ( va) ( w) ( w) (mm) (mm) (kg ) (mm) (mm) (kg ) 50-60 hz 60hz 15 18 3.0 0.20 2.5 (64) 1.3 (33) 0.7 (0.3) 30 36 5.8 0.25 3.0 (76) 1.5 (38) 1.1 (0.5) n/a n/a n/a 50 60 8.6 0.45 3.2 (81) 1.4 (36) 1.6 (0.7) 80 95 12.0 0.60 3.9 (99) 1.5 (38) 2.2 (1.0) 120 145 16.0 0.90 3.9 (99) 1.9 (48) 3.0 (1.4) 160 190 19.0 1.20 4.5 (114) 1.7 (43) 3.8 (1.7) n/a n/a n/a 225 270 20.0 1.40 4.5 (114) 2.0 (51) 4.9 (2.2) 300 360 22.0 1.70 4.6 (117) 2.6 (66) 5.7 (2.6) 400 480 27.0 2.00 5.4 (137) 2.0 (51) 6.5 (3.0) 5.7 (145) 3.3 (84) 8.1 (3.7) 500 600 31.0 2.40 5.4 (137) 2.4 (61) 8.0 (3.6) 5.7 (145) 3.7 (94) 9.6 (4.4) 625 750 36.0 3.10 5.5 (140) 3.2 (81) 9.5 (4.3) 5.7 (145) 4.2 (107) 11.1 (5.0) 800 960 45.0 3.80 6.4 (163) 2.7 (69) 12.3 (5.6) 6.9 (175) 3.9 (99) 14.6 (6.6) 990 1200 45.0 4.70 6.4 (163) 3.0 (76) 16.0 (7.3) 6.9 (175) 4.3 (109) 18.3 (8.3) 1100 1320 45.0 6.50 6.4 (163) 3.3 (84) 17.0 (7.7) 6.9 (175) 4.6 (117) 19.3 (8.8) 1300 1560 60.0 5.70 8.0 (203) 2.6 (66) 20.0 (9.1) 8.3 (211) 3.9 (99) 23.0 (10.4) 1600 1920 62.0 7.10 8.0 (203) 3.0 (76) 23.0 (10.4) 8.3 (211) 4.3 (109) 26.0 (11.8) 1900 2280 65.0 8.50 8.0 (203) 3.4 (86) 26.0 (11.8) 8.3 (211) 4.7 (119) 29.0 (13.2) 2200 2640 73.0 8.10 8.9 (226) 3.3 (84) 29.0 (13.2) 9.3 (236) 5.1 (130) 33.5 (15.2) 2500 3000 79.0 9.70 8.9 (226) 3.5 (89) 33.0 (15.0) 9.3 (236) 5.3 (135) 37.5 (17.0) 2800 3360 89.0 11.00 9.8 (249) 3.1 (79) 35.0 (15.9) 10.2 (259) 4.9 (124) 41.0 (18.6) 3200 3840 91.0 11.00 9.8 (249) 3.5 (89) 42.0 (19.1) 10.2 (259) 5.3 (135) 48.0 (21.8) 3700 4440 93.0 15.00 9.8 (249) 3.9 (99) 46.0 (20.9) 10.2 (259) 5.7 (145) 52.0 (23.6) 4400 5280 112.0 17.00 11.2 (284) 4.3 (109) 53.0 (24.0) 11.6 (295) 6.1 (155) 60.0 (27.2) 5000 6000 112.0 20.00 11.2 (284) 4.7 (119) 62.0 (28.1) 11.6 (295) 6.5 (165) 69.0 (31.3) 6300 7560 130.0 27.00 12.4 (315) 4.7 (119) 76.0 (34.5) 13.8 (351) 6.5 (165) 89.0 (40.4) 8000 9600 140.0 28.00 13.4 (340) 4.7 (119) 88.0 (39.9) 13.8 (351) 6.5 (165) 101.0 (45.8) 10000 12000 140.0 39.00 13.4 (340) 5.9 (150) 120.0 (54.4) 13.8 (351) 7.7 (196) 133.0 (60.3) over 95% of our sales are custom designs. because they require no elab- orate production tools and are individually wound, toroidal transformers are particularly well suited to custom designs. take advantage of our custom design service at no obligation. our interactive computer design capabilities enable us to optimize designs for either ac or dc loads. dimensions dimensions the values given are typical values. (2) copper losses at 25?c ambient temperature and full load. a b 10" disk mounting 1 - 2.5" b a flange mounting 10" 11 amveco magnetics, inc. ? 10401 westoffice dr. ? houston, tx 77042 ? (800) 527-7042 ? (713) 977-2500 ? fax: (713) 977-5031 ? email: sales@amveco.com ? www.amveco.com reference guide for physical size and loss data of custom designed toroidal transformers up to 12 kva
12 amveco magnetics, inc. ? 10401 westoffice dr. ? houston, tx 77042 ? (800) 527-7042 ? (713) 977-2500 ? fax: (713) 977-5031 ? email: sales@amveco.com ? www.amveco.com length length color color company: date: contact name: address: telephone: city: state: zip: fax: application: customer p/n: new program existing program quote prices on: 1 10 25 50 100 250 500 1000 2500 5000 10000 25000 electrical d a t a ?total power rating ( va): duty cycle % ?input voltages: 100v 120v 208v 230v 240v 277v other: v ?line frequency: 60hz 50/60hz other: hz ?thermal protection: a uto resettable non-resettable ?trip temperature: ?c ? maximum temperature rise over ambient: ?c ?ambient temperature: ?c physical d a t a ?maximum diameter: maximum height: not critical ?mounting method: standard steel washer/insulating pads l-bracket for vertical mounting potted center drilled hole or threaded insert enclosure clamping bracket flanges other ?safety agency requirements: ul csa iec en ce me dical ?specify which safety standard: length length color color volts p1 volts p2 length length color color volts amps ac or dc rect cap s1 visit our website for interactive design service. length length color color volts p3 length length color color volts p4 electrostatic screen (2 mil) length length color color ac or dc rect cap s2 length length color color ac or dc rect cap s3 length length color color ac or dc rect cap s4 magnetic shield if dc values are listed, please tell us the type of rectifier circuitry and capacitance values. volts amps volts amps volts amps amveco customer specification sheet for toroidal transformers
potted in a metal can up to 1000va dimensions of metal mounting disk and insulating pad power od hole thickness recom. range inch inch inch hardware va (mm) (mm) (mm) 20 1.7 (45) 0.18 (4.5) 0.04 (1) #8 40-60 2.4 (60) 0.20 (5.2) 0.04 (1) #10 100-150 2.8 (70) 0.26 (6.6) 0.04 (1) 1/4" 200-350 3.5 (90) 0.26 (6.6) 0.05 (1.3) 1/4" 425-800 4.4 (110) 0.26 (6.6) 0.06 (1.5) 1/4" 800-1200 5.2 (130) 0.33 (8.4) 0.07 (1.7) 5/16" 1200-1500 5.6 (145) 0.41 (10.3) 0.07 (1.7) 3/8" 13 amveco magnetics, inc. ? 10401 westoffice dr. ? houston, tx 77042 ? (800) 527-7042 ? (713) 977-2500 ? fax: (713) 977-5031 ? email: sales@amveco.com ? www.amveco.com epoxy potted inside enclosure with threaded insert metal disk with insulating pads up to 1500va potted centerhole all sizes toroidal mounting methods
(side view) 400va and up up to 1000va l-bracket 45va - 4000va clamping bracket (top view) amvecos custom designed enclosure 14 amveco magnetics, inc. ? 10401 westoffice dr. ? houston, tx 77042 ? (800) 527-7042 ? (713) 977-2500 ? fax: (713) 977-5031 ? email: sales@amveco.com ? www.amveco.com flange mounts toroidal mounting methods (continued)
15 amveco magnetics, inc. ? 10401 westoffice dr. ? houston, tx 77042 ? (800) 527-7042 ? (713) 977-2500 ? fax: (713) 977-5031 ? email: sales@amveco.com ? www.amveco.com substantial benefits may be derived from the use of toroids as long as thought is given to their application. the following two considerations are important. a) shorted turn condition a completed path by any conductor passing through the center hole of the toroid around the outside constitutes a short circuited turn. as with any short circuit, this condition will result in high circulating currents and, more importantly, high heat. b) inrush currents the excellent magnetic properties of the toroidal transformer and the high remanence of the grain-oriented silicon steel, under certain circum- stances, occasionally leads to high inrush current at turn-on. to prevent nuisance interruptions due to blown fuses or supply breakers, some simple precautions should be considered. as the power rating of the transformer increases, the potential effect of the inrush current becomes greater. the following table suggests different types of circuit protection according to the toroids power rating. our standard mounting options utilize either a single bolt and large washer (disk mount) with no outside structure to act as a conductor, completing the circuit; or two metal flanges (flange mount) which clamp the toroidal like a sandwich with four bolts at the outer periphery, but nothing through the center. the l-bracket and clamping bracket described are both designed to avoid a shorted turn condition. in addition, in those applications where an even lower in-rush current is desired, amveco has developed several proprietary construction techniques. without added circuitry, both the peak value and the duration of the in-rush current can be reduced. as a matter of fact, amveco has manufactured toroidal transformers without any in- rush current at all. in these cases, amveco works closely with the cus- tomer to meet the specific requirements of the application. a slight increase in the overall size of the transformer is sometimes necessary to facilitate the lower in-rush current. transformer rating suggested protection ? 15 to 300va none ? 300va to 1.0kva slow-blow fuse in primary circuit ? 1.0 to 2.0kva small value resistor in series with primary circuit ? 2.0kva and up relay momentarily inserts resistor in primary circuit at start- up, or ntc thermistors considerations when using toroidal power transformers
north american 120v/60hz ? lifetime warranty ? 120v, 60hz ? many popular secondary voltage options ? 18 to 1000va ratings available ? listed as recognized/certified components (ul and csa) ? class a (105?c) ? disk mounting hardware included ? 10" color coded self leads winding configurations with color codes figure 1 single 120v/60hz primary w/ dual secondaries figure 2 single 120v/60hz primary w/ single secondary 16 amveco magnetics, inc. ? 10401 westoffice dr. ? houston, tx 77042 ? (800) 527-7042 ? (713) 977-2500 ? fax: (713) 977-5031 ? email: sales@amveco.com ? www.amveco.com nominal secondary secondary axb 1 in axb 1 mm part no. power voltage current weight lb weight kg va vac aac mounting hardware* 18 2x9 1.0 2.5x1.3 64x33 aa5018-2009 2x12 0.7 0.7 0.3 aa5018-2012 2x15 0.6 #8 aa5018-2015 2x18 0.5 aa5018-2018 36 2x9 2.0 2.9x1.5 74x38 aa5036-2009 2x12 1.5 1.1 0.5 aa5036-2012 2x15 1.2 #10 aa5036-2015 2x18 1.0 aa5036-2018 60 2x9 3.3 3.3x1.4 84x36 aa5060-2009 2x12 2.5 1.6 0.7 aa5060-2012 2x15 2.0 #10 aa5060-2015 2x18 1.7 aa5060-2018 90 2x12 3.8 3.7x1.5 94x38 aa5090-2012 2x15 3.0 1.9 0.9 aa5090-2015 2x18 2.5 #10 aa5090-2018 2x22 2.0 aa5090-2022 115 2x12 4.8 3.9x1.5 99x38 aa5115-2012 2x15 3.8 2.2 1.0 aa5115-2015 2x18 3.2 1/4" aa5115-2018 2x22 2.6 aa5115-2022 170 2x12 7.1 3.9x1.9 99x48 aa5170-2012 2x15 5.7 3.1 1.4 aa5170-2015 2x18 4.7 1/4" aa5170-2018 2x22 3.9 aa5170-2022 220 220 1.0 4.5x1.8 114x46 aa5220-1220 2x18 6.1 4.0 1.8 aa5220-2018 2x22 5.0 1/4" aa5220-2022 2x24 4.6 aa5220-2024 360 220 1.6 4.5x2.4 114x61 aa5360-1220 2x24 7.5 5.4 2.5 aa5360-2024 2x30 6.0 1/4" aa5360-2030 2x33 5.5 aa5360-2033 2x38 4.7 aa5360-2038 450 220 2.1 5.4x2.0 137x51 aa5450-1220 2x30 7.5 6.5 3.0 aa5450-2030 2x33 6.8 1/4" aa5450-2033 2x38 5.9 aa5450-2038 550 220 2.5 5.4x2.6 137x66 aa5550-1220 2x30 9.2 8.5 3.7 aa5550-2030 2x33 8.3 1/4" aa5550-2033 2x38 7.2 aa5550-2038 650 120 5.4 5.4x2.8 137x71 aa5650-1120 2x24 13.5 9.5 4.3 aa5650-2024 2x30 10.8 5/16" aa5650-2030 2x42 7.7 aa5650-2042 790 120 6.6 5.8x2.8 147x71 aa5790-1120 2x24 16.5 11.5 5.2 aa5790-2024 2x30 13.2 5/16" aa5790-2030 2x42 9.4 aa5790-2042 1000 120 8.3 6.5x2.6 165x66 aa5000-1120 2x24 20.8 12.4 5.6 aa5000-2024 2x30 16.7 5/16" aa5000-2030 2x42 11.9 aa5000-2042 the values given are typical values. *recommended sizes 1 see picture on pages 11 and 13(disk mounting). for information about core and copper losses, see page 11. technical data subject to change without prior notice. standard design toroidal transformers
interna tional primaries 2x117v , 50/60hz ? lifetime warranty ? 2x117v, 50/60hz primaries ? many popular secondary voltage options ? 15 to 990va ratings available ? listed as recognized/certified components (ul and csa) ? class a (105?c) ? disk mounting hardware included ? 10" color coded self leads winding configurations with color codes dual 117v 50/60hz primaries w/ dual secondaries multiple primaries must be connected in series or parallel. the values given are typical values. *recommended sizes 1 see picture on pages 11 and 13(disk mounting). for information about core and copper losses, see page 11. technical data subject to change without prior notice. nominal secondary secondary axb 1 in axb 1 mm part no. power voltage current weight lb weight kg va vac aac mounting hardware* 15 2x6 1.25 2.5x1.3 64x33 aa50152-006 2x9 0.83 0.7 0.3 aa50152-009 2x12 0.62 #8 aa50152-012 2x15 0.50 aa50152-015 2x18 0.42 aa50152-018 2x22 0.34 aa50152-022 30 2x6 2.50 3.0x1.5 76x38 aa50302-006 2x9 1.67 1.1 0.5 aa50302-009 2x12 1.25 #10 aa50302-012 2x15 1.00 aa50302-015 2x18 .88 aa50302-018 2x22 0.68 aa50302-022 50 2x6 4.2 3.2x1.4 81x36 aa50502-006 2x9 2.8 1.6 0.7 aa50502-009 2x12 2.1 #10 aa50502-012 2x15 1.7 aa50502-015 2x18 1.4 aa50502-018 2x22 1.1 aa50502-022 2x24 1.0 aa50502-024 95 2x9 5.3 3.9x1.5 99x38 aa50952-009 2x12 3.9 2.2 1.0 aa50952-012 2x15 3.2 1/4" aa50952-015 2x18 2.6 aa50952-018 2x22 2.2 aa50952-022 2x24 2.0 aa50952-024 2x28 1.7 aa50952-028 2x30 1.6 aa50952-030 140 2x12 5.8 3.9x1.9 99x48 aa51402-012 2x15 4.7 3.0 1.4 aa51402-015 2x18 3.9 1/4" aa51402-018 2x22 3.2 aa51402-022 2x24 2.9 aa51402-024 2x28 2.5 aa51402-028 2x30 2.3 aa51402-030 2x117 0.6 aa51402-117 185 2x12 7.7 4.5x1.9 114x48 aa51852-012 2x15 6.2 4.0 1.8 aa51852-015 2x18 5.1 1/4" aa51852-018 2x22 4.2 aa51852-022 2x24 3.9 aa51852-024 2x28 3.3 aa51852-028 2x30 3.1 aa51852-030 2x117 0.8 aa51852-117 240 2x15 8.0 4.5x2.1 114x53 aa52402-015 2x18 6.7 4.8 2.2 aa52402-018 2x24 5.0 1/4" aa52402-024 2x30 4.0 aa52402-030 2x38 3.2 aa52402-038 2x117 1.0 aa52402-117 300 2x15 10.0 4.6x2.6 117x66 aa53002-015 2x18 8.3 5.7 2.6 aa53002-018 2x24 6.2 1/4" aa53002-024 2x30 5.0 aa53002-030 2x38 3.9 aa53002-038 2x117 1.3 aa53002-117 375 2x18 10.4 5.4x2.0 137x51 aa53752-018 2x24 7.8 6.7 3.0 aa53752-024 2x30 6.3 1/4" aa53752-030 2x38 4.9 aa53752-038 2x117 1.6 aa53752-117 460 2x24 9.6 5.4x2.6 137x66 aa54602-024 2x30 7.7 7.9 3.6 aa54602-030 2x38 6.0 1/4" aa54602-038 2x117 2.0 aa54602-117 625 2x24 13.0 5.5x3.2 140x81 aa56252-024 2x30 10.4 9.5 4.3 aa56252-030 2x33 9.5 1/4" aa56252-033 2x38 8.2 aa56252-038 2x117 2.7 aa56252-117 800 2x24 16.7 6.4x2.7 163x69 aa58002-024 2x30 13.3 12.3 5.6 aa58002-030 2x38 10.5 5/16" aa58002-038 2x48 8.2 aa58002-048 2x117 3.4 aa58002-117 990 2x24 20.6 6.5x3.0 165x76 aa59902-024 2x42 11.8 15.2 6.9 aa59902-042 2x55 9.0 5/16" aa59902-055 2x117 4.2 aa59902-117 17 amveco magnetics, inc. ? 10401 westoffice dr. ? houston, tx 77042 ? (800) 527-7042 ? (713) 977-2500 ? fax: (713) 977-5031 ? email: sales@amveco.com ? www.amveco.com standard design toroidal transformers
quad primaries - 100v, 120v, 220v, 240v - 50/60hz medical power & isolation transformers 50/60hz multiple primaries must be connected in series or parallel. note: (suffix) ss=(single secondary) secondary 1 only (suffix) ds=(dual secondary) secondary 1 & 2 ? units rated below 1000va come with metal disk and insulating pads. ? units rated 1000va and larger are center potted. our part numbers - mt100 through mt5000 carry full tuv bauartmark 18 amveco magnetics, inc. ? 10401 westoffice dr. ? houston, tx 77042 ? (800) 527-7042 ? (713) 977-2500 ? fax: (713) 977-5031 ? email: sales@amveco.com ? www.amveco.com (ul 544, ul 2601, iec 601, csa 22.2 no. 601.1) recognized medical power/isolation transformers nominal secondary secondary axb 1 in axb 1 mm part no. power current current weight lb weight kg va at 120 v at 240 v 100 .83a 4.0x2.0 102x51 mt0100ss 2.7 1.2 100 .83a .42a 4.0x2.0 102x51 mt0100ds 2.7 1.2 230 1.92a 4.6x2.4 117x61 mt0230ss 5.2 2.4 230 1.92a .96a 4.6x2.4 117x61 mt0230ds 5.2 2.4 400 3.33a 5.5x2.5 140x64 mt0400ss 8.0 3.6 400 3.33a 1.67a 5.5x2.5 140x64 mt0400ds 8.0 3.6 600 5.00a 6.2x3.1 157x79 mt0600ss 13.0 5.9 600 5.00a 2.5a 6.2x3.1 157x79 mt0600ds 13.0 5.9 750 6.25a 6.6x3.0 168x79 mt0750ss 14.0 6.4 750 6.25a 3.12a 6.6x3.1 168x76 mt0750ds 14.0 6.4 1000 8.33a 4.16a 6.9x3.5 175x89 mt1000ds 20.0 9.1 1500 12.5a 6.25a 8.2x4.0 208x102 mt1500ds 28 12.7 2000 16.6a 8.33a 9.1x4.4 231x112 mt2000ds 35 15.9 2500 20.8a 10.4a 9.4x4.5 239x114 mt2500ds 39 17.7 3000 25.0a 12.5a 10.0x4.3 254x109 mt3000ds 47 21.3 3750 31.2a 15.6a 10.5x4.9 267x124 mt3750ds 65 29.5 5000 41.6a 20.8a 11.6x5.4 295x137 mt5000ds 78 35.4 6250 52.0a 26.0a 12.0x5.6 305x143 mt6250ds 90 40.8 7500 62.5a 31.2a 12.0x5.5 305x140 mt7500ds 100 45.4 8750 72.9a 36.4a 12.5x5.5 318x140 mt8750ds 110 49.9 10000 83.3a 41.6a 13.0x5.2 330x132 mt10000ds 120 54.4 the values given are typical values. technical data subject to change without prior notice. medical grade high isolation toroidal transformers for mounting information see diagrams on page 13.
three-phase transformers 3-phase toroidal transformers are simply three separate single phase units. when convenient, they may be mounted as individual units, adding flexibility to the design of the housing or, in many cases, stacked together side by side or stacked on top of each other. for higher powered units, the relative assembly labor is less using toroids where each phase may be handled separately (usually by one person). compare this to e-i trans- former installations where a large single unit must be moved (requiring several workers and a hoist). autotransformers yield reduced size and costs frequently, in applications calling for simple voltage step-up or step-down, and where there is no requirement for electrical isolation, applying an auto- transformer will result in significant size and weight reductions as well as cost. the power rating of an autotransformer is given by the expression: p rated = p out x ( v hi - v low )/v hi v low = voltage from lower voltage tap (input or output) v hi = voltage across higher voltage tap (output or input) step up autotransformer step down autotransformer a rule of thumb to apply when considering an autotransformer is that the voltage across the entire winding should be less than or equal to two times (2x) the value of the lowest voltage tap ( v hi < 2v low ). 1500va isolation transformer and 1500va autotransformer 19 amveco magnetics, inc. ? 10401 westoffice dr. ? houston, tx 77042 ? (800) 527-7042 ? (713) 977-2500 ? fax: (713) 977-5031 ? email: sales@amveco.com ? www.amveco.com complimentary products
current sensing transformers for low voltage (up to 1.1kv) and medium voltage (up to 25kv) applications in response to the increasing demand for current sensing transformers, amveco has entered into cooperative relationships with well established far east manufacturers to offer high quality custom designed current transformers at very competitive prices. in addition to existing product line of standard designs as shown in our separate product brochure, we will gladly help you with designs to your exact specifications. t ypical applications ? control panels, relay panels, metering panels ? energy meters and power monitors ? switch gear, control gears, switch boards ? circuit breakers, electricity protection systems ? electronics and instrumentation measurements ? power (mega va) transformer protections ? trivactor meter, watt/var meter ? current recorders, sensors ? laboratory standards product range ? miniature cts for use inside energy meter, instrumentation ? metering, measuring cts ? relay class, protection cts ? interposing cts ? summation cts technical specifications ? primary current range: 5 amp. to 5000 amp. ? secondary current: 0.1 a, 0.5 a, 1 a, 5 a or customer specified ? primary style options: window type (bushing type) wound type with primary terminals primary projection with copper bus bar ? burden value: b 0.1 to b 1.8, b1 to b8 or 2.5va to 200va ? cont. rating factor (rf): 1.33 times rated primary current at 30?c or as customer specified ? short time thermal current: 50ka, for 1 sec. or as customer specified ? rated dynamic peak current: 2.5 times rated short time thermal current ? accuracy class: as per customer specification and relevant standards construction options ? encapsulation: resin casting, resin dipping, plastic casting, tape insulated ? window shape: round, rectangle, composite ? secondary termination: flexible lead wire with crimped on terminals pc board terminal pins (small cts), male terminals, female terminal bush 20 amveco magnetics, inc. ? 10401 westoffice dr. ? houston, tx 77042 ? (800) 527-7042 ? (713) 977-2500 ? fax: (713) 977-5031 ? email: sales@amveco.com ? www.amveco.com standard product testing ? all products are manufactured and tested in compliance with iec 185, ul 1244, bs 3938, ansi 57.13 ? type tests performed at certified testing laboratories ? all test data caries traceability current transformers for more information on our cts, request our full line ct brochure.
21 amveco magnetics, inc. ? 10401 westoffice dr. ? houston, tx 77042 ? (800) 527-7042 ? (713) 977-2500 ? fax: (713) 977-5031 ? email: sales@amveco.com ? www.amveco.com low profile pc mount transformers
22 amveco magnetics, inc. ? 10401 westoffice dr. ? houston, tx 77042 ? (800) 527-7042 ? (713) 977-2500 ? fax: (713) 977-5031 ? email: sales@amveco.com ? www.amveco.com low profile pc mount transformers the attractive 70000-series pc mount toroidal step-down transformers offers the design engineer the same features as our non-encapsulated toroidal power transformers, namely, very low emr (magnetic stray- fields), quiet operation, low temperature rise, low profile, low no-load current and very low no-load losses. standard features ? primary voltage of 115v or 230v at 50 / 60hz. ? safety standard certifications (ul 506, ul 1950 (ul file #e145880), vde 0805, iec 950, en 60950. ? ul file #122978 recognized for insulation class a (105c). meets all requirements of class e (125c) ? ul and vde certifications to +40c (1.6va-25va) ? hipot testing at 4000v between primary and secondary. ( vde0550) ? maximum ambient temperature of +60c for 1.6va- 25va, +40c for 35va and 50va models custom design options with minimum order of 1000 pieces custom specified primary and secondary voltages are available. please contact the houston factory or your local amveco sales representative for details. wire diagram and terminal pin layout notes for 230 volt operation, connect primaries in series by connecting pins 5 & 4 together and apply 230 volts across pins 6 & 3. for 115 volt operation, connect primaries in parallel by connecting pins 6 & 4 together and pins 5 & 3 together; apply 115 volts across pins 6 & 5. to parallel the secondaries, connect pins 14 to 12 and 13 to 11; take the out- put across pins 14 and 13. to place the secondaries in series, connect pins 13 to 12 and take the output across pins 14 and 11. minimum order quantity is 500 pieces per part number. for less than 500 pieces, please contact our distributor digi-key corporation at 800-344-4539 or order on line at www.digikey.com. i ` dim. pin layout power part sec-full current no load no- reg. ?t eff lxwxh xy pin size va number load v ma voltage load % c % mm mm mm 70000 2x7 114 2x8.9 70001 2x9 89 2x11.6 1.6 70002 2x12 67 2x15.4 1.0 29 10 77 35.56 1.0x0.5 70003 2x15 53 2x19.3 (ma) 70004 2x18 44 2x23.4 70005 2x22 36 2x28.2 70010 2x7 229 2x10.2 70011 2x9 178 2x13.0 70012 2x12 133 2x17.3 1.5 3.2 70013 2x15 107 2x21.4 (ma) 43 20 70 40.64 1.0x0.5 70014 2x18 89 2x25.7 70015 2x22 73 2x31.3 70020 2x7 357 2x9.7 70021 2x9 278 2x12.4 5.0 70022 2x12 208 2x17.0 2.0 40 29 68 45.72 1.0x0.5 70023 2x15 167 2x21.3 (ma) 70024 2x18 139 2x25.5 70025 2x22 114 2x30.5 70030 2x7 500 2x9.5 70031 2x9 389 2x12.2 7.0 70032 2x12 292 2x16.2 3.0 34 25 74 45.72 1.0x0.5 70033 2x15 233 2x20.3 (ma) 70034 2x18 194 2x24.3 70035 2x22 159 2x29.7 70040 2x7 714 2x8.3 70041 2x9 556 12x10.8 70042 2x12 417 2x14.4 3.0 10.0 70043 2x15 333 2x18.0 (ma) 20 24 82 50.80 1.0x0.5 70044 2x18 278 2x21.7 70045 2x22 227 2x26.3 70050 2x7 1071 2x8.9 70051 2x9 833 2x11.1 70052 2x12 625 2x14.8 4.0 23 27 80 55.88 1.0x0.5 15.0 70053 2x15 500 2x18.5 (ma) 70054 2x18 417 2x22.2 70055 2x22 341 2x27.2 70060 2x7 1785 2x8.3 70061 2x9 1377 2x10.7 70062 2x12 1041 2x14.3 5.0 25.0 70063 2x15 832 2x17.8 (ma) 19 28 83 55.88 1.0x0.5 70064 2x18 694 2x21.4 70065 2x22 568 2x26.2 70070 2x7 2500 2x8.0 70071 2x9 1944 2x10.6 70072 2x12 1458 2x14.0 7.0 17.7 31 81 66.04 1.0x1.0 35.0 70073 2x15 1167 2x17.6 (ma) 70074 2x18 972 2x20.9 70075 2x22 795 2x25.7 70080 2x7 3571 2x8.1 70081 2x9 2777 2x10.4 70082 2x12 2083 2x13.9 8.0 15.5 30 86 76.20 1.0x1.0 50.0 70083 2x15 1666 2x17.3 (ma) 70084 2x18 1388 2x20.8 70085 2x22 1136 2x25.4 82.4x82.4x37.5 685 grams 72.0x72.0x37.5 525 grams 60.0x60.0x37.5 435 grams 60.0x60.0x26.3 304 grams 55.0x55.0x26.0 252 grams 49.7x49.7x23.1 174 grams 49.7x49.7x19.5 144 grams 44.7x44.7x19.5 110 grams 39.6x39.6x18.5 82 grams dimensions in mm. electrical measurements @ 20c ambient temperature. all data subject to change without prior notice.
23 amveco magnetics, inc. ? 10401 westoffice dr. ? houston, tx 77042 ? (800) 527-7042 ? (713) 977-2500 ? fax: (713) 977-5031 ? email: sales@amveco.com ? www.amveco.com low profile miniature transformers
24 amveco magnetics, inc. ? 10401 westoffice dr. ? houston, tx 77042 ? (800) 527-7042 ? (713) 977-2500 ? fax: (713) 977-5031 ? email: sales@amveco.com ? www.amveco.com low profile miniature transformers (electrical measurements @ 20c ambient temperature) all data subject to change without prior notice. the 62000-series miniature toroidal step-down transformers offers the design engineer the same features as our larger toroidal power transform- ers, namely, very low emr (magnetic strayfields), quiet operation, low tem- perature rise, low profile, low no-load current and very low no-load losses. standard features ? primary voltage of 115v or 230v at 50 / 60hz. ? safety standard certification (ul 506), design construction meet ul 1950, vde 0805, iec 950, en 60950. ? ul recognized for insulation class a (105c). meets all requirements of class e (125c) ? ul certifications to +40?c (1.6va-25va) ? hipot testing at 4000v between primary and secondary. ( vde0550) ? maximum ambient temperature of +60?c ? epoxy potted center with through hole for m4 bolt custom design options with minimum order of 1000 pieces custom specified primary and sec- ondary voltages are available. please contact the houston factory or your local amveco sales representative for details. wire diagram and schematics for 230v operation, connect primaries in series by connecting black and red lead wires together and apply 230v across yellow and violet leads wires. for 115v operation, connect primaries in parallel by connecting yellow and red lead wires together and black and violet leads wires. to parallel the secondaries, connect green and brown wires and red and blue together. to connect the secondaries in series, the red and brown wires are connected together. take the output across the green and blue wires. minimum order quantity is 500 pieces per part number. for less than 500 pieces of part number 62060 through 62085, please contact our distributor digikey corporation at 800-344-4539 or order on line at www.digikey.com i ` dim. power part sec-full current no load no- reg. ?t eff odxidxht va number load v ma voltage load % c % mm 62000 2x7 114 2x8.94 62001 2x9 89 2x11.63 1.6 62002 2x12 67 2x15.43 1.0 29 10 77 62003 2x15 53 2x19.30 (ma) 62004 2x18 44 2x23.41 62005 2x22 36 2x28.19 62010 2x7 229 2x10.2 62011 2x9 178 2x13.0 62012 2x12 133 2x17.3 1.5 3.2 62013 2x15 107 2x21.4 (ma) 41 20 70 62014 2x18 89 2x25.7 62015 2x22 73 2x31.3 62020 2x7 357 2x9.7 62021 2x9 278 2x12.4 5.0 62022 2x12 208 2x17.0 2.0 45 29 70 62023 2x15 167 2x21.3 (ma) 62024 2x18 139 2x25.5 62025 2x22 114 2x30.5 62030 2x7 500 2x9.5 62031 2x9 389 2x12.2 7.0 62032 2x12 292 2x16.2 3.0 34 25 74 62033 2x15 233 2x20.3 (ma) 62034 2x18 194 2x24.3 62035 2x22 159 2x29.7 62040 2x7 714 2x8.3 62041 2x9 556 12x10.8 62042 2x12 417 2x14.4 3.0 10.0 62043 2x15 333 2x18.0 (ma) 20 24 82 62044 2x18 278 2x21.7 62045 2x22 227 2x26.3 62050 2x7 1071 2x8.9 62051 2x9 833 2x11.1 62052 2x12 625 2x14.8 4.0 23 27 81 15.0 62053 2x15 500 2x18.5 (ma) 62054 2x18 417 2x22.2 62055 2x22 341 2x27.2 62060 2x7 1785 2x8.3 62061 2x9 1377 2x10.7 62062 2x12 1041 2x14.2 5.0 25.0 62063 2x15 832 2x17.8 (ma) 19 28 84 62064 2x18 694 2x21.4 62065 2x22 568 2x26.2 62070 2x7 2500 2x8.4 62071 2x9 1944 2x10.6 62072 2x12 1458 2x14.0 7.0 17.7 31 85 35.0 62073 2x15 1166 2x17.6 (ma) 62074 2x18 972 2x20.9 62075 2x22 795 2x25.7 62080 2x7 3571 2x8.1 62081 2x9 2777 2x10.4 62082 2x12 2083 2x13.8 8.0 15.5 30 86 50.0 62083 2x15 1666 2x17.3 (ma) 62084 2x18 1388 2x20.7 62085 2x22 1136 2x25.4 78.0x22.5x35.0 670 (grams) 72.0x17.0x33.5 453 (grams) 58.0x13.8x34.5 388 (grams) 57.5x7.0x24.0 262 (grams) 53.5x6.8x23.5 216 (grams) 47.0x6.0x21.5 145 (grams) 47.0x6.0x18.0 115 (grams) 42.0x7.0x17.5 89 (grams) 37.5x7.0x17.0 71 (grams)
part current current l power losses od x ht od x ht wt wt number i dc (a) rms (mh) ( ws) core-copper (inches) (mm) (lbs.) (kg ) l0540 5 3.5 40 0.5 1.5 - 12.8 3.8 x 1.9 97 x 48 2.5 1.1 l0560 5 3.5 60 0.75 3 - 13.8 4.6 x 2.0 117 x 51 4 1.8 l1020 10 7 20 1 4 - 16.7 5.5 x 2.0 140 x 51 6 2.7 l1040 10 7 40 2 5 - 23.4 5.5 x 2.4 140 x 61 8 3.6 l1060 10 7 60 3 7 - 28.6 5.9 x 2.8 150 x 71 11.5 5.2 l1510 15 10.6 10 1.13 4 - 18.7 5.5 x 2.0 140 x 51 6 2.7 l1515 15 10.6 15 1.69 5 - 22.7 5.5 x 2.4 140 x 61 7.5 3.4 l1520 15 10.6 20 2.25 5 - 26.3 5.5 x 2.4 140 x 61 8 3.6 l1540 15 10.6 40 4.5 8 - 37.8 6.5 x 2.8 165 x 71 15 6.8 l2010 20 14.1 10 2 5 - 23.2 5.5 x 2.4 140 x 61 8 3.6 l2015 20 14.1 15 3 7 - 28.4 5.9 x 2.8 150 x 71 11.5 5.2 l2020 20 14.1 20 4 8 - 32.8 6.5 x 2.8 165 x 71 14 6.4 l2040 20 14.1 40 8 12 - 42.8 8.0 x 3.5 203 x 89 27 12.3 l3005 30 21.2 5 2.25 5 - 26.1 5.5 x 2.4 140 x 61 8.5 3.9 l3010 30 21.2 10 4.5 8 - 37.8 6.5 x 2.8 165 x 71 15 6.8 l3015 30 21.2 15 6.75 11 - 45.9 8.0 x 3.0 203 x 76 22 10.0 l3020 30 21.2 20 9 13 - 43.2 8.0 x 3.5 203 x 89 28 12.7 l4005 40 28.3 5 4 8 - 32 6.5 x 2.8 165 x 71 14 6.4 l4010 40 28.3 10 8 13 - 43.2 8.0 x 3.5 203 x 89 27 12.3 l4015 40 28.3 15 12 20 - 56 10 x 3.4 254 x 86 39 17.7 l5005 50 35.3 5 6.25 11 - 35 8.0 x 3.0 203 x 76 23 10.4 l5010 50 35.3 10 12.5 20 - 57.5 10.0 x 3.4 254 x 86 39 17.7 l6005 60 42.4 5 9 12 - 43.2 8.0 x 3.5 203 x 89 29 13.2 in addition to toroidal transformers, amveco designs and manufactures toroidal chokes for dc-filtering and ac-circuits. as wit h transformers, toroidal chokes also offer significant savings in both size and weight compared to a laminated core. presently, we manufacture chokes f rom 0.2 ws to 25 ws. amveco has developed its own design software which allows us to design and manufacture to your specific needs. with in-house capabilities for both core-making and core-cutting, we can offer fast turn-around for both prototypes and production units. 25 amveco magnetics, inc. ? 10401 westoffice dr. ? houston, tx 77042 ? (800) 527-7042 ? (713) 977-2500 ? fax: (713) 977-5031 ? email: sales@amveco.com ? www.amveco.com amveco standard series inductors
26 amveco magnetics, inc. ? 10401 westoffice dr. ? houston, tx 77042 ? (800) 527-7042 ? (713) 977-2500 ? fax: (713) 977-5031 ? email: sales@amveco.com ? www.amveco.com iso 9001 registry
amveco magnetics, inc. ? 10401 westoffice dr. ? houston, tx 77042 ? (800) 527-7042 ? (713) 977-2500 fax: (713) 977-5031 ? email: sales@amveco.com ? www.amveco.com corporate headquarters and main plant, houston, tx

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