Problema 6
2
Problema. 6. MOTOR 1(10HP, COS ∅=0.88) P=I N1 KVCos∅n I N1 = 10∗746 √ 3∗220∗0.88∗0.9 =24.72 A I D1 =I N 1 ∗1.25 I D 1 =24.72 ( 1.25) I D1 =30.9 A MOTOR 1(15HP, COS ∅=0.85) I N2 = 15 ∗746 √ 3∗220∗0.85∗0.92 =37.56 A I D2 =I N 2 ∗1.25 I D 2 =37.56 ( 1.25) I D2 =46.95 A I N2 >I N1 I D =1.25 I N 2 + I N 1 I D =1.25( 37.56 )+ 24.72 I D =71.67 A Por tabla de cables: TW-80 I D =88 A S= K v ∗L∗ ∑ I D ∗cos ∅ U∗U % S= 0.0309 ∗80∗[ 30.9∗0.88 +46.95∗0.85 ] 0.025∗220 S=30.16 mm 2 De tablas I DT = 88 AS=30.16 mm 2 S tablas <S cable
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Transcript of Problema 6
Problema. 6.
MOTOR 1(10HP, COS∅=0.88)
P=I N 1KVCos∅ n
IN 1=10∗746
√3∗220∗0.88∗0.9=24.72 A
ID1=I N 1∗1.25 ID1=24.72(1.25)
ID1=30.9 A
MOTOR 1(15HP, COS∅=0.85)
IN 2=15∗746
√3∗220∗0.85∗0.92=37.56 A
ID2=I N 2∗1.25 ID 2=37.56(1.25)
ID2=46.95 A
IN 2> IN 1
ID=1.25 I N 2+ IN 1
ID=1.25(37.56)+24.72
ID=71.67 A
Por tabla de cables: TW-80ID=88 A
S=K v∗L∗∑ I D∗cos∅
U∗U%
S=0.0309∗80∗[30.9∗0.88+46.95∗0.85 ]0.025∗220
S=30.16mm2
De tablas IDT=88 AS=30.16mm2
Stablas<Scable
16mm2<30.16mm2
De tabla concluimos:
IDT=110 AS=35mm2
I T=3∗110 A Sc=30.16mm2
