Beijing Yeke Electronic Materials Co., Ltd.

Application areas: Measuring-level current transformer used in power system, transformer used on precision measuring instruments (such as watt-hour meter). According to the requirements of different measurement accuracy of the transformer, different soft magnetic materials can be chosen as iron core materials. The higher the permeability of the iron core is, the smaller the measurement error of the transformer is, hence the accuracy is higher. At present, the most common iron core material is cold-rolled silicon steel sheet, followed by Permalloy and nano-crystalline glass alloy. In recent years, demands for transformers with high-precision level (such as class 0.2, class 0.2Sand class0.5S) increased rapidly. When small ratio, low ampere turns are required or the iron core is restricted because of the small volume, the cold-rolled silicon steel often fails to meet the accuracy requirements. Although the Permalloy iron cores with high permeability can meet the required precision, its price is very high. However use of nano-crystalline alloy iron cores can both meet the accuracy requirements and be produced at lower cost than the Permalloy. Therefore, the demand of measuring level current transformer iron core made of nano-crystalline alloy rapidly increased domestically. The typical parameters comparison of the common soft magnetic materials used for current transformer iron cores: Basic parameters Nano-crystalline iron core Permalloy (1J85) iron core Silicon steel iron core Saturation magnetic flux density (Bs) 1.25T 0.75T 2.03T Initial permeability (¦Ì0) 8¡«12, 104 5¡«8, 104 103 Maximum permeability (¦Ìm) 60, 104 60, 104 4, 104 Curie Temperature (¡æ) 570 400 740 Density (g/cm3) 7.25 8.75 7.65 Lamination factor 0.7 0.9 0.95 Thickness (mm) 0.03 0.15 0.3 Features: It is made of the iron-based nano-crystalline strips with a moderate saturation magnetic induction, high permeability and low loss, which can effectively reduce ratio difference angle difference of the transformer. The saturation magnetic induction Bs of nano-crystalline alloy is between the silicon steel and Permalloy. The lower the Bs value is, the lower the security coefficient of the instrument is. When the system failure occurs and large current through the current transformer results therefore, the iron core is more easily filled, and the secondary current no longer increases in proportion, as can assure that the secondary instruments are well protected and not to be damaged. Permeability of nano-crystalline alloy is close to Permalloy and a magnitude higher than silicon steel, so it is suitable to be made as high-precision transformer iron core. The density and lamination coefficient of nano-crystalline is lower than that of Permalloy, under the condition of the same size and similar performance of the two. In this case the nano-crystalline iron core is 1/4 lighter in weight, and 1/3 lower in the manufacturing cost. In addition, the linear range of nano-crystalline alloy is wider than that of Permalloy .It can work for a long time at temperature of -55 ~ 130 ¡æ ,with a good temperature stability. Specifications a. Rectangular core: (mm) Iron Core Size(mm) (mm) The case size(mm) Weight of the iron Core (kg per piece) Turns Ratio N1: N2 Excitation current(mA) Excitation voltage(mV) 55*97/77*119, 25 50*92/82*114, 30 0.53 1:1 25 0.45 95 2.2 1500 53 70*90/100*120, 30 65*85/105*125, 36 0.81 1:1 200 15 1:1 500 50 75*95/105*125, 25 70*90/110*130, 30 0.7 1:1 70 2 1:1 175 8 80*95/120*135, 25 75*90/125*140, 30 1.09 1:1 80 1.7 1:1 600 41 90*90/160*160, 30 85*85/165*165, 36 2.4 1:1 100 6 1:1 500 100 1:1 1000 140 135*135/260*260, 10 130*130/265*265, 16 2.3 1:1 100 1.5 1:1 500 32 82*602/138*658, 45 75*595/145*665, 55 8.8 1:1 100 1.2 1:1 1000 45 1:1 2000 120 b. Ring core: No. The iron Core Size Case size(mm) The weight of the iron core (kg per piece) Turns ratio N1: N2 is 1:1; Input current (mA), 50Hz; Output voltage (mV) 1 1105/1165, 15 1095/1175, 25 8.35 Excitation current 450 1200 2000 Excitation voltage 0.59 2.36 5.28 2 415/520, 15 409/526, 23 6.08 Excitation current 50 250 700 Excitation voltage 0.4 3 11 3 305/490, 15 299/496, 23 9.1 Excitation current 350 900 ¡¡ Excitation voltage 5 20 ¡¡ 4 315/395, 35 309/401, 43 8.2 Excitation current 120 400 ¡¡ Excitation voltage 3 11 ¡¡ 5 198/248, 30 192/254, 37 2.76 Excitation current 100 200 500 1000 Excitation voltage 2 6 35 90 6 198/248, 20 192/254, 27 1.84 Excitation current 100 200 500 1000 Excitation voltage 1.5 3.5 25 60 7 155/200, 30 150/205, 36 2 Excitation current 100 190 1000 Excitation voltage 2.5 9.5 80 8 140/180, 30 135/185, 36 1.58 Excitation current 40 80 240 Excitation voltage 1 2.9 15 9 130/190, 30 125/195, 36 2.38 Excitation current 40 80 240 Excitation voltage 1.2 3.8 17 10 100/140, 30 95/145, 36 1.19 Excitation current 30 120 500 Excitation voltage 0.85 6.8 68 11 90/130, 30 85/135, 36 1.09 Excitation current 30 120 500 Excitation voltage 0.7 6 55 12 90/125, 25 85/130, 31 0.78 Excitation current 30 120 500 Excitation voltage 0.9 7 70 13 80/120, 30 75/125, 36 0.99 Excitation current 200 500 ¡¡ Excitation voltage 20 65 ¡¡ 14 85/115, 30 80/120, 36 0.74 Excitation current 30 120 500 Excitation voltage 0.7 6.5 55 15 85/125, 20 80/130, 26 0.7 Excitation current 30 120 500 Excitation voltage 0.62 5.5 50. wooden case+carton box.

It has the advantages of low loss and high saturation magnetic flux density and is widely used in power transformers, high frequency inductors, reactors and other components. Performance features: Convenient for coil assembling Excellence in anti-DC bias With high permeability and low coercivity, it can improve efficiency of the device, reduce the size; With low-loss, it can reduce temperature rise. Good temperature stability enables it work for a long time at temperature of -50 ~ 130oC . Product specifications and typical properties: No. Code a b c d e f Le Ae M VOL Wa WaAe (mm) (mm) (mm) (mm) (mm) (mm) (cm) (cm2) (g) (cm3) (cm2) (cm4) 1 YK01CC-6.3 10¡À0.5 11 33 20+0.5 31+1 53+2 13.1 1.59 150 20.9 3.6 5.8 2 YK01CC-8 11¡À0.8 13 30 20+0.5 35+1 52+2 13.2 1.79 170 23.7 3.9 7 3 YK01CC-10 11¡À0.8 13 40 20+0.5 35+1 62+2 15.4 1.81 200 27.9 5.2 9.4 4 YK01CC-16A 11¡À0.8 13 40 25+0.5 35+1 62+2 15.1 2.31 250 34.8 5.2 12 5 YK01CC-16B 11¡À0.8 13 50 25+0.5 35+1 72+2 16.9 2.31 280 38 6.5 15 6 YK01CC-20 11¡À0.8 13 50 30+0.5 35+1 72+2 17.5 2.71 340 47.4 6.5 17.6 7 YK01CC-25 13¡À0.8 15 56 25+0.5 41+1 82+2 19.6 2.7 380 52.9 8.4 22.7 8 YK01CC-32 13¡À0.8 15 56 30+0.5 41+1 82+2 20 3.2 460 64.1 8.4 26.9 9 YK01CC-40 13¡À0.8 15 56 35+0.5 41+1 82+2 19.9 3.71 530 73.8 8.4 31.2 10 YK01CC-50 16¡À1 20 70 25+0.5 52+1 102+3 24.9 3.3 590 82.2 14 46.2 11 YK01CC-63 16¡À1 20 70 30+0.5 52+1 102+3 25.3 3.91 710 98.9 14 54.7 12 YK01CC-80 16¡À1 20 70 40+1 52+1 102+3 25.4 5.21 950 132 14 72.9 13 YK01CC-100 16¡À1 20 70 45+1 52+1 102+3 25 5.91 1060 148 14 82.7 14 YK01CC-125 19¡À1 25 83 35+1 63+1 121+3 30.2 5.4 1170 163 20.8 112 15 YK01CC-160 19¡À1 25 83 40+1 63+1 121+3 28.5 6.5 1330 185 20.8 135 16 YK01CC-200 19¡À1 25 83 50+1 63+1 121+3 29.8 7.81 1670 233 20.8 162 17 YK01CC-250 19¡À1 25 90 60+1 63+1 128+3 31.4 9.31 2100 292 22.5 210 18 YK01CC-320 22¡À1 35 85 50+1 79+1 129+4 32.5 9.3 2170 302 29.8 277 19 YK01CC-400 22¡À1 35 85 65+1 79+1 129+4 33.6 11.7 2820 393 29.8 348 20 YK01CC-500 25¡À1 40 85 55+1 90+1 135+4 35.6 11.3 2900 404 34 386 21 YK01CC-630 25¡À1 40 85 70+1 90+1 135+4 35.6 14.4 3670 511 34 488 22 YK01CC-800A 25¡À1 40 85 85¡À1.5 90+1 135+4 35.6 17.4 4450 620 34 592 23 YK01CC-800B 30¡À1 40 95 85¡À1.5 100+1 155+4 39.3 21 5930 826 38 799 24 YK01CC-1000 33¡À1 40 105 85¡À1.5 106+1 171+5 42.7 23 7060 983 42 967 25 YK02CC-1 22¡À1 36 80 20¡À0.5 80+1 124+3 32 3.6 780 115 28.8 103.7 26 YK02CC-2 26¡À1 36 85 25¡À0.5 88+1 137+4 34.6 5.33 1230 184 30.6 163 27 YK02CC-3 33¡À1 49 113 40¡À0.5 115+1 179+5 45.6 10.8 3307 492.5 55.4 598 wooden case+carton box.

Applications: It can be used for EMI common mode filter of all kinds of power supply Features: High saturation magnetic induction (1.25T), high permeability, high inductance ( 10 times of the amount of ferrite inductors), low loss, small size, light weight, strong anti-electromagnetic interference capability, excellent frequency characteristics , and high temperature stability Performance: Iron Core Material 1K201 1K107 Saturation magnetic flux density (T) 0.6&0.8 1.25 Curie temperature (oC) >320 >570 Crystallization temperature (oC) >500 >500 Saturation magnetostriction coefficient (¡Á 10-6) < 1 < 2 Residual magnetic flux density (T) 0.3,0.5 0.5,0.8 Initial permeability >80,000 >80,000 Maximum permeability >600,000 >600,000 Coercivity (A / m) < 2 < 2 Iron loss (20kHz, 0.5T), w / kg < 25 < 25 Iron Loss (100kHz, 0.2T), w / kg < 60 < 70 Iron loss rate of change (-50 ~ 130oC) 15 Applications: It can be used for output filter inductors, smoothing inductors, energy storage inductors of all kinds of power supplies and energy-saving lamp electronic ballasts, and the differential-mode inductance in the EMC filters.The open iron core has a good constant inductors properties and anti-DC bias capability. With low-loss, it can be used as inductor iron core of a variety of power supply. Features: The open iron core has a good constant inductors properties and anti-DC bias capability. With low-loss, it can be used as inductor iron core of a variety of power supply. Specification and Performance of the Iron Core: Specification of the Iron Core Effective permeability Transverse Magnetic Range (Oe) The rate of change (%) 12/20, 8 180 0¡«50 15 12/20, 10 180 0¡«50 15 16/26, 10 1000 0¡«10 20 300 0¡«30 15 180 0¡«50 15 20/32, 10 1000 0¡«10 20 300 0¡«30 15 180 0¡«50 15 20/30, 15 1000 0¡«10 20 300 0¡«30 15 180 0¡«50 15 32/50, 10 1000 0¡«10 20 300 0¡«30 15 180 0¡«50 15 32/50, 15 1000 0¡«10 20 300 0¡«30 15 180 0¡«50 15 Note: Iron cores of other specifications can be provided upon request of users. Wooden case+carton box.

Anti-DC transformer cores as a combination of core components, used in electrical degree / watt-hour meter, power measuring systems. Features of the core: 1. Strong anti-DC-capacity; 2. Precision, the scope of application of 0.5-0.1 grade level, the scope of application of current 1.5-200A; 3. Excellent high and low temperature properties; 4. A high price. Wooden case+carton box.

Product Specifications: No. Magnetic Stripe Specifications No. Magnetic Stripe Specifications 1 10, 10, 200 4 10, 10, 180 2 15, 15, 200 5 15, 15, 180 3 20, 20, 250 6 20, 25, 100 Performance characteristics: With high saturation magnetic induction,high magnetic permeability,low coersive force,low core loss(equivalent to one-fifth~one-third of silicon steel),constant magnetic,low excitation current,good temperature stability and aging stability. Application: Mainly used to replace silicon as a variety of forms, different power-frequency distribution transformers, power factor correction inductors, small transformers, high power rectangular core, the output energy storage filter inductors, saturable reactor, interference filter inductor, IF transformer core, the working frequency from 50Hz to 10kHz; as a high-power switching power reactor core materials, the use of frequencies up to 50kHz. Specifications: Thickness 20 to 30 hairline,width 2.5mm to 120 mm.Can make according to clients requirements. Application: Transformer cores for high frequency switch mode power supplies Current transformer cores for electric industry Transformer cores for ground-fault-interrupters Cores for filters, storage inductors, and reactors EMC common mode chokes Sensor cores Cores for saturable reactors, magnetic amplifiers, beads, and pulse compressors Physical properties: Saturate Induction 1.25T Hardness Hv 880kg/mm2 Curie Temperature 560 degree C Density 7.2g/cm3 Crystallization Temperature 510 degree C Resistivity 130¦Ì¦¸-cm Saturate Magnetostriction 2, 10-6 Magnetic properties: Product type Transverse field annealed No field annealed Longitudinal field annealed Initial permeability >3, 104 >8, 104 >1, 104 Maximum permeability >5, 104 >45, 104 >50, 104 Remanence 0.85T Coercivity

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