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一台单相变压器,SN=1000kVA,U1N/U2N=60/6.3kV,fN=50Hz空载试验(低压侧):U0=6300kV,I0=19.1A,p0=5000W;短路
一台单相变压器,SN=1000kVA,U1N/U2N=60/6.3kV,fN=50Hz空载试验(低压侧):U0=6300kV,I0=10.1A,p0=5000W;短路试验(高压侧):Uk=3240kV,Ik=15.15A,pk=14000W。试计算:
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一台单相变压器,SN=1000kVA,U1N/U2N=60/6.3kV,fN=50Hz空载试验(低压侧):U0=6300kV,I0=10.1A,p0=5000W;短路试验(高压侧):Uk=3240kV,Ik=15.15A,pk=14000W。试计算:
有一台单相变压器,额定容量SN=100kVA.额定电压U1N/U2N=6000/230V,f=50H。一,二次侧绕组的电阻和漏电抗的数值为:试求:
(1)折算到高压侧的短路电阻RK、短路电抗XK及短路阻抗ZK
(2)折算到低压侧的短路电阻RK'、短路电抗XK'及短路阻抗ZK'
(3)将上面的参数用标么值表示
(4)计算变压器的阻抗电压及各分量
(5)求满载及cosϕ1=1、cosϕ2=0.8 (滞后)及cosϕ2=0.8 (超前)等三种情况下的ΔU,并对结果进行讨论
A.1000kVA
B.1100kVA
C.1050kVA
D.以上都不对
A.40000
B.80000
C.120000
D.160000