小型變壓器計(jì)算方法

1、小型變壓器計(jì)算方法原公式：N4.5×100000/Bg×S(N每伏匝數(shù)，S鐵心截面，Bg鐵芯導(dǎo)磁率，一般在600012000高斯)現(xiàn)今科學(xué)技術(shù)發(fā)達(dá)，鐵芯在9000高斯以下的應(yīng)是早期產(chǎn)品，現(xiàn)在一般都在10000高斯附近或以上，按10000高斯計(jì)：N4.5×100000/10000×S45/S1、先計(jì)算有效截面積S=長(zhǎng)*寬*有效系數(shù)（0.94）2、求初級(jí)繞組匝數(shù)：N1=U1/4.44fBSU1-額定初級(jí)電壓f-頻率B-磁感應(yīng)強(qiáng)度，一般鐵氧體的飽和磁感應(yīng)強(qiáng)度Bm=0.5T。3、求次級(jí)繞組匝數(shù)N2=N1*U2/U1U2-額定次級(jí)電壓4、求導(dǎo)線直徑I2=Sn/U2

2、Sn-額定容量I1=Sn/U1導(dǎo)線直徑d=（4*I/pi*J）J-電流密度，取J=2.5A/mm2 以下頁(yè)面為您提供了1000KVA以下小功率變壓器繞制數(shù)據(jù)，使您在自制小型變壓器過(guò)程中基本不用進(jìn)行復(fù)雜的計(jì)算，供您方便、快捷地查找您所需的各種功率的變壓器的資料。對(duì)于小型變壓器的電流密度一般選用J=2-3平方毫米，變壓器短時(shí)工作時(shí)可以取J=4 -5A平方毫米。變壓器一次繞組繞制情況如下：變壓器鐵芯中柱外面套上由青殼紙做的繞組框架或彈性紙框架，包上電纜紙與兩層黃蠟布，厚度為B0.。在框架外面每繞一層繞組后就得包上層間絕緣，其厚度為。對(duì)于較細(xì)的導(dǎo)線，如0.2毫米以下的導(dǎo)線一般采用厚度為0.02-0.0

3、4毫米透明紙（白玻璃紙）；對(duì)于較粗的導(dǎo)線如0.2毫米以上的導(dǎo)線，則采用厚度為0.05-0.07毫米的電纜紙（或牛皮紙）；對(duì)再粗的導(dǎo)線則可用厚度為0.12毫米的青殼紙（或牛皮紙）。當(dāng)整個(gè)一次側(cè)繞組繞完后，還需要在它的最外面裹上厚度為 的繞組之間的絕緣紙，可用厚度為0.12毫米的青殼紙或2-3層電纜紙夾2層黃蠟布等。然后再繞次級(jí)。量VA一次側(cè)電壓 U1=220V鐵芯截面積S(平方厘米）每伏需繞匝數(shù)（匝/伏）參考鐵芯尺寸（毫米）電流（A）裸導(dǎo)線直徑（毫米）7000850010000中心柱寬X疊厚AHChJ=2 (安/m)J=2.5 (安/m)J=3 (安/m)高斯高斯高斯axb(毫米）30.0136

4、0.090.080.082.1831252212x21443882240.01820.110.090.092.4727221912x24443882250.02270.120.110.102.824201714x22504392560.2730.130.120.1083.05221815.516x225648102880.03630.150.1360.1253.5518.515.51316x2456481028100.04540.170.150.143.9517141216x2856481028120.05460.190.170.154.351512.71119x266757.51233.51

5、50.06820.210.180.174.851411.59.619x3556481028160.07280.210.190.18513119.419x306757.51233.5200.09100.240.210.25.612108.419x346757.51233.5220.100.250.230.215.8511.39.3822x3078671439250.11350.270.240.226.1510.58.77.419x376757.51233.5300.13650.290.260.246.859.586.822x3678671439330.150.310.270.257.159.27

6、.66.519x436757.51233.5380.17250.330.300.277.658.676.022x4078671439400.1810.340.300.287.88.46.95.922x4178671439420.1910.350.310.2888.26.75.726x3594811747450.2640.360.320.298.37.86.55.522x4378671439500.2270.380.340.318.87.46.25.222x4678671439550.250.400.360.339.2575.9526x4194811747600.2730.410.380.359

7、.656.75.64.726x4394811747700.3180.450.400.3610.036.35.24.430x39106911953760.3450.470.420.3810.08654.226x4894811747900.4090.510.460.4111.85.54.53.830x451069119531000.4540.530.480.4412.45.34.43.730x481069119531200.5460.590.530.4813.64.83.93.430x501069119531400.6360.630.570.5214.74.53.73.135x48123105.5

8、2261.51600.7280.680.610.5615.54.13.42.935x50123105.52261.51850.8410.730.660.6016.73.83.22.735x35123105.52261.52000.910.760.680.6217.73.73.12.635x58123105.52261.52301.0450.830.730.67193.42.92.440x5514412426722501.1350.860.770.6919.73.32.752.340x5714412426722801.2730.900.80.7320.83.12.62.240x601441242

9、6723201.4540.960.860.822.32.92.42.140x6414412426723801.7251.040.940.8624.52.72.21.945x63161138.52980.54201.911.100.980.9025.52.62.11.840x7314412426724502.0451.141.020.9326.52.52.051.7545x68161138.52980.55182.351.231.101.0028.52.31.91.645x73161138.52980.55752.611.291.161.0429.82.21.81.5545x76161138.52980.56002.721.331.181.0830.52.151.751.550x7017815332897003.181.431.301.1632.82.01.631.450x7517815332897813.551.501.351.2234.51.851.5