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Amorphous Transformer Features ► Amorphous Transformer The Amorphous transformer is a power conversion equipment and a High Efficiency Energy and Power Saving Transformer which reduced the rate of no-load loss more than 75% comparing to the existing transformer due to the adoption of amorphous metal in steel core instead of the existing grain oriented silicon steel. ► Amorphous Metal The Amorphous metal is an amorphous magnetic material created from molten metal which is mixed with Fe, B, Si and others through a rapid cooling process(106 /sec) - The array of atom is irregularly arranged into amorphous state like liquid state (Random structure) - Due to the advantage that atom’s rotation is easy to cope with the variation of magnetic field, amorphous metal reduced the hysteresis loss more than a silicon steel with crystal structure - Amorphous metal have the high natural resistance (3 times higher than silicon steel) and the thin thickness of material (about one tenth of silicon steel) enable amorphous metal to reduce the eddy loss • Hysteresis loss: When a magnetic flux passed through a steel core, friction loss occurred between Magnetic particles • Eddy loss: When a magnetic flux passed through a steel core, a loss occurred from an eddy current • No load loss: Energy loss resulting from the primary side of transformer is powered regardless of load existence. This loss always occurs in steel core in energizing condition • Load loss: Variable loss with load ratio in the transformer winding. This loss is propotioned to square of load ratio. This load loss is zero in case of no load A Hysteresis curve decides the main characteristics of a magnetic material and the cross section of a looped curve shows a hysteresis loss. Because the coercivity of amorphous metal is less than a silicon steel and due to the high permeability of amorphous metal comparing to a silicon steel, decrease hysteresis loss in natural. ► Advantage of Amorphous Transformer • Miniaturization : Reduced overall dimension by a special winding structure • Low Heat Generation - Require the smallest space for installation - Decrease secular variation of the winding & insulating materials causing by passing years - Enable minimization of rising temperature in winding to increase capability for overload • According to loss reduction, get the operation & maintenance cost of the transformer reduced and make transformer life more extended • The excellent magnetic characteristic in the high frequency and harmonics band provide high efficiency and miniaturization • Environmental improvement effects - Reduce heat emission by power consumption, prevent global warming - Environmental Conservation due to the construction reduction of power plant - Reduce emission of harmful gases • Transformer certificated by high efficiency energy appliance ► Supporting Programs to promote High Efficiency Energy Certified Transformer • Grant for the encouragement of Installation (KEPCO www.kepco.co.kr/dsm) Capacity(kVA) 100 150 200 300 400 500 600 750 1000 1250 1500 2000 2500 3000 Incentive(\1,000) 400 600 700 950 1250 1250 1550 1900 2550 3850 3850 4050 5150 5300 The potential cost-down by power saving between high efficiency & normal transformer is about 430,000 won/KW Characteristic Amorphous Metal Grain Oriented Silicon Steel Reference Magnetic Property Iron core loss(W/kg) 0.23 1.72 Amorphous Metal: Excitation(VA/kg) 0.37 5.2 1.36 Tesla Magnetization of saturation, Tesla(25℃) 1.55 1.86 Silicon Steel: Resistivity(Ω-㎝) 1.0 45 1.74 Tesla Physical Property Thickness(mm) 25 270~300 Specific gravity(g/cc) 7.19 7.65 Hardness(Hv) 900 210 • Benefit of tax credit: Deduct 10% of tax amount (the corporation tax and an income tax) from total investment amount of a year • Support budget to build facilities : Redemption by installment in five years with a three-year grace period at 2% annual interest rate (quarterly variable interest rate) • In accordance with the Prime Minister instruction NO.2005-5, a public institution must use the high efficiency energy appliance in compulsory Amorphous Cast Resin Transformer ◎ Standard Spec of Amorphous Molded Type Transformer Standard Spec Frequency 60Hz Classification of insulator High Voltage : B class, Low voltage: F class Temperature rising of winding High Voltage : 80℃, Low Voltage: 100℃ Standard insulation level(kV) Systematic Voltage 24 7.2 3.6 Under 0.6 Withstanding Voltage of commercial cycle 50 20 10 3 Withstanding Voltage of Impulse 95 60 40 - Primary of rated voltage(kV) 22.9 6.6 3.3 - Primary of tapped voltage(kV) F23.9-R22.9- 21.9-20.9-19.9 F6.9-R6.6-6.3-6.0- 5.7 F3.45-R3.3-3.15- 3.0-2.85 - Secondary of rated 6.6, 3.3, 0.48, 0.44, 0.38, 0.22 voltage(kV) Rated capacity(kVA) 100/ 200 / 300 / 400 / 500 / 600 / 750 / 1,000 / 1,250 / 1,500 / 2,000/3,000 ◎ Overall Dimension and Characteristic ▶ 3Φ 22.9kV / 380-220V ▶ 3Φ 6.6kV or 3.3kV / 380-220V Capacity (kVA) Impedence (%) No- load Load losses Efficiency(%) Dimension(mm) Weight (kg) 20% load ratio 50% load ratio 100% load ratio W D H 100 4.0 100 1,850 99.14 98.89 98.09 900 640 1,130 610 200 4.0 196 3,050 99.21 99.05 98.40 920 705 1,215 940 300 4.0 231 4,160 99.34 99.16 98.56 990 750 1,395 1,200 400 5.0 228 5,140 99.46 99.25 98.68 990 825 1,360 1,460 500 5.0 256 6,050 99.50 99.30 98.75 1,040 830 1,370 1,510 600 6.0 293 6,720 99.53 99.35 98.84 1,140 850 1,420 1,920 750 6.0 344 8,400 99.55 99.35 98.85 1,160 850 1,590 2,050 1,000 6.0 458 8,970 99.59 99.46 99.07 1,310 870 1,730 2,740 1,250 6.0 556 9,810 99.62 99.52 99.18 1,390 950 1,770 3,220 1,500 7.0 690 12,169 99.61 99.50 99.15 1,520 1,050 1,780 4,200 2,000 7.5 1,200 15,500 99.55 99.50 99.17 1,900 1,070 2,020 5,300 Capacity (kVA) Impedence (%) No- load Load Losses Efficiency(%) Dimension(mm) Weight (kg) 20% load ratio 50% load ratio 100% load ratio W D H 100 6.0 126 1,960 98.99 98.78 97.96 1,090 760 1,200 730 200 6.0 209 3,300 99.15 98.98 98.28 1,120 835 1,365 1,130 300 6.0 263 4,280 99.28 99.12 98.51 1,200 845 1,445 1,390 400 6.0 304 5,340 99.36 99.19 98.61 1,200 915 1,430 1,610 500 6.0 350 5,970 99.41 99.27 98.75 1,210 910 1,565 1,830 600 6.0 389 7,170 99.44 99.28 98.76 1,290 940 1,640 2,110 750 6.0 459 8,410 99.47 99.32 98.83 1,360 955 1,720 2,520 1,000 6.0 585 9,890 99.51 99.39 98.96 1,440 1,000 1,800 3,050 1,250 6.0 774 10,570 99.52 99.46 99.10 1,500 1,050 1,810 3,480 1,500 6.5 1,020 12,200 99.50 99.46 99.13 1,720 1,160 1,930 4,650 2,000 7.0 1,200 16,000 99.54 99.48 99.15 1,900 1,200 1,900 5,600 200 1.2 117 99.40 99.11 98.40 1,120 850 1,360 290 1,000 300 1.2 154 99.45 99.16 98.49 1,300 940 1,430 360 1,380 400 1.2 192 99.50 99.24 98.64 1,450 940 1,370 410 1,700 500 1.0 216 99.53 99.27 98.68 1,450 1,200 1,330 460 1,750 600 1.0 233 99.55 99.29 98.71 1,700 1,220 1,340 520 1,960 750 1.0 268 99.58 99.32 98.75 1,680 1,300 1,380 620 2,410 1,000 1.0 400 99.56 99.33 98.78 1,950 1,400 1,410 700 3,010 1,500 1.0 560 99.59 99.36 98.84 2,300 1,800 1,570 1,000 4,400 2,000 1.0 690 99.61 99.38 98.86 2,400 2,050 1,680 1,150 5,100 ► 3Ø22.9kV / 6,600 or 3,300V Capacity (kVA) Characteristic of No- Load Efficiency (%) Dimension(mm) No-load current(%) No-load losses(%) 20%load factor 50%load factor 100%load factor L D H 2,500 0.8 800 99.63 99.40 98.90 2,000 2,950 2,450 1,800 7,000 3,000 0.8 950 99.65 99.45 99.00 2,200 3,100 2,530 2,000 7,700 3,500 0.8 1,100 99.65 99.45 99.00 2,300 3,000 2,550 2,180 8,700 4,000 0.8 1,150 99.68 99.51 99.10 2,300 3,050 2,580 2,250 9,300 5,000 0.8 1,350 99.71 99.56 99.20 2,580 2,550 2,650 2,530 10,600 Amorphous Cast Resin Transformer (3000kVA) Three Phase 3000kVA 22,900V/380-220V Certified "High Efficiency Energy using application" ♦ Overall Dimension and Characteristic - Frequency : 60Hz - No-load current : 0.15% - No-load losses : 1,478W - Efficiency : 99.41% - Voltage Regulation : 0.81% - Total Weight : 8,500kg - Dimension(mm) : 2300(L) X 1400(D) X 2470(H) ◎ Overall Dimension and Characteristic ▶ 13,200V / 22,900 GrdY-230V, 60Hz Capacity(kVA) No-load Current(%) Voltage Regulation(%) No-load Losses(W) Efficiency(%) Dimensions(mm) W D H 10 1.2 2.0 12 97.9 480 550 1,020 125 20 1.2 1.7 19 98.2 530 600 1,060 180 30 1.0 1.5 25 98.4 560 630 1,110 235 50 0.8 1.4 35 98.6 630 710 1,150 340 75 0.8 1.4 48 98.6 760 720 1,170 410 100 0.7 1.3 58 98.7 780 740 1,240 505 ※ 1. Data is subject to changes without notice. 2. Products to Customer-order are available besides above described standards. ◎ Reduction Comparison Table of Power Loss Capacity(kVA) No-load loss Amorphous Silicon Steel 10 12 35 23 201 22,646 20 19 60 41 359 40,370 30 25 80 55 482 54,154 50 35 120 85 745 83,693 75 48 170 122 1,069 120,124 100 58 209 151 1,323 148,678