Practica Corto

8/18/2019 Practica Corto

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P(kw) FD MD(kw) FP In ITM1-MATJA 300HP 8

POLOS

243,26 0.8 194.6 0.77

2-MATJA 500HP

4POLOS

405,47 0.8 324.37

6

0.87

7-MATJA 350HP2POLOS 283,8 0.8 227.04 0.90

5-S!". A#$I F.P%0.78 295 0.85 250.75 0.78

4-&O'DOMI'IO

MD%155 FP%0.83

182 0.85 155 0.83

8-&.&OMP#TO 30 1 30 0.96 TOTAL 1439.5

3

1181.76

F.A 1.15F.P 0.85P.T!AFO("A) 1598.85P.T!AFO("A)&OM!&I

AL

1600

SOLUCIONARIO DEL EXAMEN DE INSTALACIONESELÉCTRICAS I

TEMA: CORTO CIRCUITO

1)P.n*+ +/+%1439.53

F.&%0.65

P.&/n+/ %935.69w

&/ In, I, ITM, !T, !M

1-MATJA 300H, FP%0.77, F%0.92, k%7

In1%300 x 746

√ 3 x 460 x0.77 x 0.92=396.51 A n/ (-39.64)

I1%1.2In%475.8A

ITM%3$630A


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2-MATJA 500H, FP%0.87, F%0.92, k%7.4

In2%500 x 746

√ 3 x 460 x0.87 x 0.92=584.9 A

n/ (-29.54)

I1%1.2In%701.88A

ITM%3$800A

3-MATJA 350H, FP%0.9, F%0.92, k%7

In7%350 x 746

√ 3 x 460 x0.9 x0.92=395.78 A

n/ (-29.54)

I7%1.2In%474.9A

ITM%3$630A

4-S!". A#$ILIA!S

In5%295 X 10

3

√ 3 x 460 x0.78=474.68 A n/ (-38.73)

I5%1.2In%569.616A

ITM%3$630A

5-&O'DOMI'IO

In4%182.35

√ 3 x 460 x0.83=275.74 A

n/ (-33.9)

I4%1.2In%330.8A

ITM%3$400A

6-&. &OMP#TO

In4%30 X 10

3

√ 3 x 460 x0.96=39.22 A n/ (-16.26)

I4%1.2In%47.064A

ITM%3$50A


3/9

ITM%In1 In2 In7 In5 In4 In8%2155.95 n/ (-33.04)

I%1.2(2155.95) %2587.14

ITM%2500A

3) HACER EL CÁLCULO DE LA CORRIENTE DE CORTO CICUITO ENEL PUNTO A, B, C

IA%Scc

√ 3 x V n=

650 x106

√ 3 x 10 x103=37.52 kA

S% √ Icable2 x

t

k 2 %317.32::2

S%300 ::2

;


4/9

; T% (0.00580.045632)

; T% (0.00580.045632) (10

2

106 )

; T%0.36252.852=

;+/+% ;> ; T%0.48463.3=%3.335n/ (81.64)

!@= 460

;+/+%3.335(0.46

2

102 )%0.007056 n 460

I%

460

√ 3 x0.007056=37.639 kA

4. HACER EL CALCULO DE LA CORRIENTE DE CORTO CIRCUITO ENLOS PUNTOS D Y E.

HALLA'DO L IDB

ZD=ZC +Zcd

In% I(ITM7) I(ITM8) % 395.8C25.84 39.22C16.26 % 434.52C24.98

I* %1.25(434.52C24.98) % 543.15

S&&IO' 400:: → &APA&IDAD B 680 (MPL)

Vin=0.0309 x 434.52 x185 x 0.906 x 100

460 x 400=1.22≪2.5 (CUMPLE)

Vin=0.0309 x 434.52 x7 x 185 x 0.906 x100

460 x 400=8.56 ≪10 (CUMPLE)

CARACTERISTICAS N2XH TRIPLE

SECCIÓN

!SIST'&IA A&

(A)

!A&TA'&IA

(A)

AMPA&IDAD

D#&TO


5/9

NOMINAL

OME: OME:

400mm

0.0!!" 0.0#43 !$0

;% 0.185(0.06610.0943)%0.021C54.97

ZD=ZC +Zcd=0.028∨61.51

IccD= 0.46

√ 3 x0.021=12.65 KA

I&A>L ID (MPL)

HALLA'DO L IB

ZE=ZD+Zde

In % I(ITM7)% 395.8C25.84

I* %1.25(395.8C25.84) % 494.75

S&&IO' 240:: → &APA&IDAD B 525 (MPL)

Vin=0.0309 x395.8 x 45 x 0.9 x100460 x 240

=0.45≪2.5 (CUMPLE)

Vin=0.0309 x395.8 x7 x 45 x0.9 x100

460 x 240=3.14 ≪10 (CUMPLE)

CARACTERISTICAS N2XH TRIPLESECCIÓ

NNOMIN

AL

!SIST'&IA A&

(A)

!A&TA'&IA

(A)

AMPA&IDAD

D#&TOOME: OME:

240mm

0." 0.0#!% &2&


6/9

; % 0.045(0.10.0967)% 6.26 10−3∨44.04

ZE=0.034∨58.34

IccE= 0.46√ 3 x 0.034

=7.81 KA

I&A>L I (MPL)

$'C(m*+-(/ -*/1 */ * 5/( C

D+/*B

Pingre!=1439.53 G

O % 9,936

" % 460

SOL#&IO' B

"te!ric!= P ingre! ( tan#i−tan#$ ) KVAR

"te!ric!=1439,53 ( tan33,04 %−tan9.936% ) KVAR

"te!ric!=684.10 KVAR

"c!&ercial="te!ric!( V tablaV dat! )2 KVAR

"c!&ercial=684,10

(

480

460

)2 KVAR

"c!&ercial=744,88 KVAR

n+/n* /: *B


7/9

"c!&ercial=745 KVAR % 24 ' 30 "A! 1 ' 15"A! 1 ' 10 "A!

"real="c!&ercial( V dat!V tabla )2 KVAR

"real=745( 460480 )2 KVAR

"real=684,21 KVAR

I n= "real

√ 3'V =

684,21'1000

√ 3'460=858,75 A

I di I(M =1.3' I n=1,3'858,75=1116,375 A

ITM B3 ' 1250 A

I di CA)LE=1.4' I n=1,4'858,75=1202,25 A

2(3-1 ' 400::2 '2$H ) 1 ' 70::2 'H-80 2P"&-SAP O105::

P 30 "A!B


"real=30( 460480 )2 KVAR

"real=27,55 KVAR

I n= "real

√ 3'V =

27,55'1000

√ 3'460=34,57 A


8/9

I di I(M =1.3' I n=1,3'34,57=44,95 A

ITM B3 ' 50 A

I di CA)LE=1.4' I n=1,4'34,57=48,398 A

(3-1 ' 6::2 '2$H ) 1 ' 10::2 'H-80 2P"&-SAP O15::

P 15 "A! B


"real=15(460480 )2 KVAR

"real=13,77 KVAR

I n= "real

√ 3'V =

13,77'1000

√ 3'460=17,29 A

I di I(M =1.3' I n=1,3'17,29=22,47 A

ITM B3 ' 32 A

I di CA)LE=1.4' I n=1,4'17,29=24,206 A

(3-1 ' 6::2 '2$H ) 1 ' 10::2 'H-80 2P"&-SAP O15::

P 10 "A!B



9/9

"real=10( 460480 )2 KVAR

"real=9,184 KVAR

I n="real

√ 3'V =

9,184'1000

√ 3'460=11,526 A

I di I(M =1.3' I n=1,3'11,526=14,985 A

ITM B3 ' 16 A

I di CA)LE=1.4' I n=1,4'11,526=16,13 A

(3-1 ' 6::2 '2$H ) 1 ' 10::2 'H-80 2P"&-SAP O15::

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