三相变压器的电流计算公式? 变压器的电流计算公式
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I=U/R
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r\uff1a\u7535\u6e90\u5185\u963b\uff0c\u03a9\uff1b
R\uff1a\u8d1f\u8f7d\u7535\u963b\uff0c\u03a9
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I=I1+I2+\u2026In
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I=I1=I2=I3=\u2026=In
5\u3001\u8d1f\u8f7d\u7684\u529f\u7387
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U\uff1a\u7535\u538b\uff0cV\uff1b
I\uff1a\u7535\u6d41\uff0cA\uff1b
P\uff1a\u6709\u529f\u529f\u7387\uff0cW\uff1b
R\uff1a\u7535\u963b
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Q\uff1a\u65e0\u529f\u529f\u7387\uff0cw\uff1b
Xl\uff1a\u7535\u611f\u611f\u6297\uff0c\u03a9
I\uff1a\u7535\u6d41\uff0cA
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Q\uff1a\u65e0\u529f\u529f\u7387\uff0cV\uff1b
Xc\uff1a\u7535\u5bb9\u5bb9\u6297\uff0c\u03a9
I\uff1a\u7535\u6d41\uff0cA
6\u3001\u7535\u529f\uff08\u7535\u80fd\uff09
W=UIt
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I\uff1a\u7535\u6d41\uff0cA\uff1b
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I=Imax\u00d7sin(\u03c9t+\u03a6)
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8\u3001\u4ea4\u6d41\u7535\u8def\u6700\u5927\u503c\u4e0e\u5728\u6548\u503c\u7684\u5173\u7cfb
Imax=2\u7684\u5f00\u5e73\u65b9\u00d7I
I\uff1a\u7535\u6d41\uff0cA\uff1b
Imax\uff1a\u6700\u5927\u7535\u6d41\uff0cA\uff1b
9\u3001\u53d1\u7535\u673a\u7ed5\u7ec4\u4e09\u89d2\u5f62\u8054\u63a5
I\u7ebf=3\u7684\u5f00\u5e73\u65b9\u00d7I\u76f8
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I\u76f8\uff1a\u76f8\u7535\u6d41\uff0cA\uff1b
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I\u7ebf=I\u76f8
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11\u3001\u4ea4\u6d41\u7535\u7684\u603b\u529f\u7387
P=3\u7684\u5f00\u5e73\u65b9\u00d7U\u7ebf\u00d7I\u7ebf\u00d7cos\u03a6
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U1/U2=N1/N2=I2/I1
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N1\u3001N2\uff1a\u4e00\u6b21\u3001\u4e8c\u6b21\u7ebf\u5708\u5708\u6570\uff1b
I2\u3001I1\uff1a\u4e8c\u6b21\u3001\u4e00\u6b21\u7535\u6d41\uff0cA\uff1b
13\u3001\u7535\u963b\u3001\u7535\u611f\u4e32\u8054\u7535\u8def
I=U/Z
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I\uff1a\u7535\u6d41\uff0cA\uff1b
R\uff1a\u7535\u963b\uff0c\u03a9\uff1b
XL\uff1a\u611f\u6297\uff0c\u03a9
14\u3001\u7535\u963b\u3001\u7535\u611f\u3001\u7535\u5bb9\u4e32\u8054\u7535\u8def
I=U/Z
Z=[R2+\uff08XL-Xc\uff092]\u548c\u7684\u5f00\u5e73\u65b9 \uff08\u5f0f\u4e2d2\u4e3a\u5e73\u65b9\uff09
Z\uff1a\u603b\u963b\u6297\uff0c\u03a9\uff1b
I\uff1a\u7535\u6d41\uff0cA\uff1b
R\uff1a\u7535\u963b\uff0c\u03a9\uff1b
XL\uff1a\u611f\u6297\uff0c\u03a9\uff1b
Xc\uff1a\u5bb9\u6297\uff0c\u03a9
变压器是变换交流电压、电流和阻抗的器件,当初级线圈中通有交流电流时,铁芯(或磁芯)中便产生交流磁通,使次级线圈中感应出电压(或电流)。随着变压器行业的不断发展,越来越多的行业和企业运用上变压器,越来越多的企业进入了变压器行业,变压器由铁芯(或磁芯)和线圈组成,线圈有两个或两个以上的绕组,其中接电源的绕组叫初级线圈,其余的绕组叫次级线圈。
你好:
——★1、三相变压器的电流计算公式为:三相变压器的电流=容量(VA)÷(电压×根号3)。
——★2、计算一次侧电流时,代入一次电压;计算二次侧的电流时,要带入二次侧电压。
三相变压器的电流计算公式为:Ie=Pe/Ue/√3。式中,Ie=变压器额定电流;Pe=额定功率;Ue=变压器额定输出电压;√3一般取1.732。
三相变压器广泛适用于交流50Hz至60Hz,电压660V以下的电路中,广泛用于进口重要设备、精密机床、机械电子设备、医疗设备、整流装置,照明等。产品的各种输入、输出电压的高低、联接组别、调节抽头的多少及位置(一般为±5%)、绕组容量的分配、次级单相绕组的配备、整流电路的运用、是否要求带外壳等,均可根据用户的要求进行精心的设计与制造。
三相变压器的额定电流计算公式:
I(额定电流)=S(视在功率KVA)/1.732*U(电压KV)
功率(P) 除以 电压 (U) 除以1.732
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