(6)short circuit calculation (14.1.14)

8/18/2019 (6)Short Circuit Calculation (14.1.14)

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N.B Calculation is made on Infinitue Bus Method

Fault Current Calculation (Infinitue Bus Method)

Fault Current at Transformer Primary Side (Enter This Value if You no! other!ise lea"e #lan$

Fault Current At Transformer

Transformer %"a &Secondary Volta'e of Transformer (ine)ine$ *&&

Secondary Volta'e of Transformer (ine)Neutral$ +,-

Transformer Imedance (/t$ 0

Transformer Secondary Full oad Current I (ine)ine$ *

Transformer Secondary Full oad Current I (ine)Neutral$ 0

%V1 Short Circuit 1t Primary Side

Source Imedance (/u$ -.----

Total Imedance (/ 2/u3/t$ -.-0--

Short Circuit Current 4MS Symmetrical 05

Fault Current 1t Transformer Secondary ( Isc()$2I ()$6Total Imedance$ 67

Fault Current 1t Transformer Secondary ( Isc()N$2I ()N$6Total Imedance$ 100

Fault Current At Main PanelCa#le en'th from Transformer to Main Panel ,-

Tye of Ca#le Cu

No of Conductor6Phase 7

Si8e of Phase Conductor 7+- mm+

Si8e of Neutral Conductor 7+- mm+

Tye of 4ace 9ay Non)Metalic

Phase Conductor Constant (C7$ 75*:&

Neutral Conductor Constant (C+$ 75*:&

F7()$ ;F()$2(7.5&+ < en'th < Isc$6(C7 < No of Conductor < Volt$= -.--7

F+()N$ ;F()$2(7.5&+ < en'th < Isc$6(C+ < No of Conductor < Volt$= -.--+

M7()$ ;M2(76(73F7$= -.>>>

M+()N$ ;M2(76(73F+$= -.>>:

Fault Current at Main Panel ?isconnection ()$ ;Isc < M7= 67

Fault Current at Main Panel ?isconnection ()N$ ;Isc < M+= 100

Fault Current At Sub PanelCa#le en'th from Main Panel to Su# Panel +-Tye of Ca#le Cu


Si8e of Phase Conductor &- mm+

Si8e of Neutral Conductor 7+5 mm+


Phase Conductor Constant (C7$ *:&&

Neutral Conductor Constant (C+$ 7>55>


F+()N$ ;F()$2(7.5&+ < en'th < Isc$6(C+ < No of Conductor < Volt$= -.---

M7()$ ;M2(76(73F7$= -.>>>

M+()N$ ;M2(76(73F+$= 7.---

Fault Current at Su# Panel ?isconnection ()$ ;Isc < M7= 67

Fault Current at Su# Panel ?isconnection ()N$ ;Isc < M+= 100

Fault Current At Distribution BoardCa#le en'th from Su# Panel to ?istri#ution Board ,-

Tye of Ca#le Cu


Si8e of Phase Conductor 7+5 mm+

Si8e of Neutral Conductor 7+5 mm+


Phase Conductor Constant (C7$ 7:,>*

Neutral Conductor Constant (C+$ 7:,>*

Jignesh.Parmar, jigup

http://www.electricalnotes.wordpress.com/http://www.electricalnotes.wordpress.com/


2/48


F+()N$ ;F()$2(7.5&+ < en'th < Isc$6(C+ < No of Conductor < Volt$= -.--7

M7()$ ;M2(76(73F7$= -.>>>

M+()N$ ;M2(76(73F+$= -.>>>

Fault Current at ?istri#ution Board ?isconnection ()$ ;Isc < M7= 66

Fault Current at ?istri#ution Board ?isconnection ()N$ ;Isc < M+= 100


3/48

1m 1lu 7 Core Ca#le Non)Metalic

Cu & Core Ca#le Metalic

Yes

%"a NoVolt

Volt

@

1m

1m

1m

1m

1m

Meter

& Core Ca#le

1m

1m

Meter

& Core Ca#le

1m

1m

Meter

7 Core Ca#le

[email protected], w

Fault Current Calculationase !"# $ethod



4/48

1m

1m


5/48

Fault Current Calculation (Base KVA Method)

Calculatin' Fault Current

Fault e"el at Incomin' Site &0- MV1

Base MV1 (For A.T #eaer and Transformer Primary side$ & MV1

Base %V (For A.T #eaer and Transformer Primary side$ 77 %V

Base %V (For Transformer SecondaryT Panel?.B$ -.*&& %V

Fault %e&el at '( )u* )tation )ide

P. 4eactance at Incomin' of A.T Breaer ;/ .u(1$ = -.--: Ω

Fault e!el at Diesel " #as #enerator

Si8e of Ca#le from Denerator To A.T Su# Station AT


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Fault e!el at T Sub Panel Side

Si8e of Ca#le from Main T Panel To T Su# Panel T ,-

< (?istri#ution Board$ -.---

4 (?istri#ution Board$ -.*>, Ω

< (?istri#ution Board$ -.--- Ω

4 (?istri#ution Board$ -.*>, Ω

/ .u (F$ &.>0- Ω

Total / .u (F$ ( to ?istri#ution Board$ *.7++ Ω

Fault e"el at ?istri#ution Board 0./6 MV1

Fault Current at ?istri#ution Board 0.- %am

Ω6%m

Ω6%m

Ω6%m

Ω6%m


7/48


8/48

Calculation $esults

Fault e"el at Incomin' Site &0- MV1

Fault e"el at A.T Side ?iesel 6 Das Denerator +,.7> MV1

Fault e"el at Transformer Primary Side +,.7+ MV1

Fault e"el at Transformer Secondary Side :.7& MV1

Fault Current at Transformer Secondary 7-.:* %am

Fault e"el at Main T Panel *.07 MV1

Fault Current at Main T Panel 0.7* %am

Fault e"el at T Su# Panel &.5, MV1

Fault Current at T Su# Panel ,.-- %am

Fault e"el at ?istri#ution Board -.&0 MV1

7 4uns Fault Current at ?istri#ution Board -.*> %am

3.4 Calculation is *ased on ase !"# $ethod

7 4uns

7 4uns

Jignesh.Parmar,[email protected], www.electricalnotes

Ω6%m

Ω6%m

Ω6%m

Ω6%m

initue $ethod



9/48

7 4uns

7 4uns

Ω6%m

Ω6%m

Ω6%m

Ω6%m


10/48


11/48


12/48


13/48


14/48

.

T PVC ( to 7.7 %V$ 7c, 7c


15/48

&c< 7:,

&c< +*-

&c< &--

&c< *--

&c< ,--

&c< 0&-

&.,


16/48


17/48

mm+ 19D6%cmill

C For Coer conductor.

& Sin'le Conductor & Conductor Ca#le

0--V 0--V

Steel Nonma'netic Steel Nonma'netic

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* mm+ 7+ 19D 075 075 075 0750 mm+ 7- 19D >:7 >:+ >:+ >:+

7- mm+ : 19D 7,,5 7,,> 7,,> 7,0-

70 mm+ 0 19D +*+, +*&- +*&7 +*&&

+, mm+ * 19D &:-0 &:+0 &:&- &:&:

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&,, mm+ 5,- cmil +*7&5 +>5&, &7-,7 &*0-,

,-5 mm+ 7--- cmil +,+5: &7*>7 &&:0* &57>5

Cu

Non)Metalic 7+- mm+ 7,-:+ 7005& 70&>+ 75*:&

& Core Ca#le 7+- mm+ 7,-:+ 7005& 70&>+ 75*:&

0 0 0 17/

0 0 0 17/

Cu

Non)Metalic &- mm+ *55* *:77 *:+- *:&&

& Core Ca#le 7+5 mm+ 70*:& 7:,>* 7:&77 7>55>

0 0 0 //

0 0 0 1-77-

Cu

Non)Metalic 7+5 mm+ 70*:& 7:,>* 7:&77 7>55>

7 Core Ca#le 7+5 mm+ 70*:& 7:,>* 7:&77 7>55>

0 1- 0 0

0 1- 0 0


18/48

mm+ 19D6%cmill

C For 1llu conductor.

& Sin'le Conductor & Conductor Ca#le

0--V 0--V

Steel Nonma'netic Steel Nonma'netic

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* mm+ 7+ 19D &50 &50 &50 &500 mm+ 7- 19D ,>> ,>> ,>> ,>>

7- mm+ : 19D >,7 >,+ >,+ >,+

70 mm+ 0 19D 7*:7 7*:+ 7*:+ 7*:+

+, mm+ * 19D +&*0 +&,- +&,7 +&,&

&- mm+ & 19D +>,+ +>07 +>0& +>00

&, mm+ + 19D &57& &5&- &5&* &5*-

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7+5 mm+ +,- cmil 7+7++ 7+:0+ 7+5>5 7&+&07,+ mm+ &-- cmil 7&>7- 7*>+& 7*>75 7,*>,

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19/48

PVC Flei#le

7c - * * -.-,5

7c


20/48

AT


21/48

PVC Flei#le ( to 7.7 %V$

T PVC ( to 7.7 %V$

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7c< ,-- -.-5+0 -.-:5 -.-*0 -.-:5 &*, +>,

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(SH.mm$


22/48

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&c< &-- -.7+ -.-:0 -.-5&> -.-:0 &-, +0-

&c< *-- -.-> -.-:0 -.-,>+ -.-:0 &&, +>-

&c< ,-- -.-> -.-:0 -.-,>+ -.-:0 &5- &+-

&c< 0&- -.-> -.-:0 -.-,>+ -.-:0 *-, &,-

&.,5 -.5& -.->5 5- 0,

&.,* -.&:5 .-.->* 50 0&

&., -.+0: -.-> >+ 55

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&.,> -.-:5 70, 7*-

&.,5 7.&: -.->5 0- ,-

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*c5 -.0+ -.->5 >+ 55

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*c -.&+ -.-> 7&, 77,

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23/48

7c 7.7 -.7+> 7+- 7-,

7c& -.:++ -.7+>& 7*- 7+,

7c, -.,0: -.77>, 75, 7,,

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7c, -.-,7& -.-:>, -.50 0+-

7c, :+

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&c< +*- -.707 -.7-*7 -.707 -.7-*7 &7, +5,

&c< &-- -.7& -.7--+ -.7& -.7--+ &,, &7-

&c< *-- -.7-+ -.->0: -.7-+ -.->0: *-- &,-

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&c< 7+- -.&+, -.77+: -.&+, -.77+: ++- 7>-

&c< 7,- -.+0, -.7->0 -.+0, -.7->0 +*, +7-

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&c< +*- -.707 -.7-*7 -.707 -.7-*7 &7, +5,

&c< &-- -.7& -.7--+ -.7& -.7--+ &,, &7-

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24/48

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&c< 7+- -.&+, -.77+: -.&+, -.77+: ++- 7>-

&c< 7,- -.+0, -.7->0 -.+0, -.7->0 +*, +7-

&c< 7:, -.+77 -.7-5& -.+77 -.7-5& +5, +*-

&c< +*- -.707 -.7-*7 -.707 -.7-*7 &7, +5,

&c< &-- -.7& -.7--+ -.7& -.7--+ &,, &7-

&c< *-- -.7-+ -.->0: -.7-+ -.->0: *-- &,-

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25/48


T PVC ( to 7.7 %V$

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26/48

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T PVC ( to 7.7 %V$

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27/48

#% C= ).C

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7-, 7&- 7+, 7&- +.00- *.-& 7.77 -.->5

7&- 7,, 7,- 70, &.:-- ,.5, -.:+ -.->+

7,, 7>- 75, +-, ,.&+- :.-, -.,0 -.-::

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.


28/48

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: C93;,


29/48

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75- 7:, 70- ++- *.5- 5.7,

+7, ++, 7>, +5, 0.,: 7-.-7

+0- +0, +&, &*- :.>& 7&.,>

&-, &-- +0, &>- 77.+: 75.70

&*, &&, +>, **- 7*.7- +7.*,

&>, &:- &&- ,7- 75.&> +0.*0

*5- *&, &:- 0-- ++.,0 &*.&+

,*- *>- *+, 0:- +:.+- *+.>-&:- 0&- ,,- *:- 5>- &5.0-

*&- 5&- 07- ,&- >7- *5.--

*:- :*- 0:- ,:- 7-&- ,>.++

,&- >0- 5*- 0&- 77*- 5,.+-

,:- 7-5- 5>- 05- 7+,- >*.--

7-, 7+- 7-, 7&, +.&, &.,:

7+, 7*, 7+, 70, &.+> ,.-7

7,- 75- 7,- 7>, *.5- 5.7,

7>- +7- 7:- +*- 0.,: 7-.-7

+&- +,- +7, +>, :.>& 7&.,>

+0- +:- +*- &&, 77.+: 75.70

+>, &7- +5- &:- 7*.7- +7.*,

&&, &,- &-, *&- 75.&> +0.*0

&>, *-- &,- ,-- ++.,0 &*.&+

*,- **, &>- ,5- +:.+- *+.>-

,+- ,-- **- 0,- &5.0- ,5.+-

5C9PP: C93;, ,.--

75- 7:, 70- ++- *.5- 5.7,

+7, ++, 7>, +5, 0.,: 7-.-7

+0- +0, +&, &*- :.>& 7&.,>

&-, &-- +0, &>- 77.+: 75.70

&*, &&, +>, **- 7*.7- +7.*,

&>, &:- &&- ,7- 75.&> +0.*0

*5- *&, &:- 0-- ++.,0 &*.&+

,*- *>- *+, 0:- +:.+- *+.>-

0&- ,,- *:- 5>- &5.0- ,5.+-

5&- 07- ,&- >7- *5.-- 57.,-

:*- 0:- ,:- 7-&- ,>.++ >-.7-

>0- 5*- 0&- 77*- 5,.+- 77*.*-

7-5- 5>- 05- 7+,- >*.-- 7*&.--

7-, 7+- 7-, 7&, +.&, &.,:7+, 7*, 7+, 70, &.+> ,.-7

7,- 75- 7,- 7>, *.5- 5.7,

7>- +7- 7:- +*- 0.,: 7-.-7

+&- +,- +7, +>, :.>& 7&.,>

+0- +:- +*- &&, 77.+: 75.70

+>, &7- +5- &:- 7*.7- +7.*,

&&, &,- &-, *&- 75.&> +0.*0

&>, *-- &,- ,-- ++.,0 &*.&+

*,- **, &>- ,5- +:.+- *+.>-

,+- ,-- **- 0,- &5.0- ,5.+-

Short Circuit Current 4atin' for 7Sec.durationin %. 1ms


30/48

C93;, ,.--

75- 7:, 70- ++- *.5- 5.7,

+7, ++, 7>, +5, 0.,: 7-.-7+0- +0, +&, &*- :.>& 7&.,>

&-, &-- +0, &>- 77.+: 75.70

&*, &&, +>, **- 7*.7- +7.*,

&>, &:- &&- ,7- 75.&> +0.*0

*5- *&, &:- 0-- ++.,0 &*.&+

,*- *>- *+, 0:- +:.+- *+.>-

0&- ,,- *:- 5>- &5.0- ,5.+-

5&- 07- ,&- >7- *5.-- 57.,-

:*- 0:- ,:- 7-&- ,>.++ >-.7-

>0- 5*- 0&- 77*- 5,.+- 77*.*-

7-5- 5>- 05- 7+,- >*.-- 7*&.--

7-, 7+- 7-, 7&, +.&, &.,:

7+, 7*, 7+, 70, &.+> ,.-7

7,- 75- 7,- 7>, *.5- 5.7,

7>- +7- 7:- +*- 0.,: 7-.-7

+&- +,- +7, +>, :.>& 7&.,>

+0- +:- +*- &&, 77.+: 75.70

+>, &7- +5- &:- 7*.7- +7.*,

&&, &,- &-, *&- 75.&> +0.*0

&>, *-- &,- ,-- ++.,0 &*.&+

*,- **, &>- ,5- +:.+- *+.>-

,+- ,-- **- 0,- &5.0- ,5.+-

C93;, .:

+:- 7+.*

&&, 7,.,

&:- 7>.+

*,- +*.:

,7- &7.7

,>, *7.*

0>- ,7.:

:-- 0,.+

>7- :+.:

7-7- 7-*

Short Circuit Current 4atin' for 7Sec.durationin %. 1ms

Short Circuit Current 4atin' for 7Sec.duration

in %. 1ms


31/48

Corrrection FactorK%7 Dround Corrrection FactorK%+ Corrrection Factor4!/

Insulation Insulation Soil Thermal 4esisti"ityK +., .m69

PVC


32/48


33/48

70 75 7: 7> +- +7 ++ +&

1.1 !" ,5

7.,,& -.7-+ 0+ 0+ 07 :- 5: 55

7.,* -.7-+ :7 :- :& 7-* 7-+ 7-0

-.>& -.7-+ >> >- 77, 7&- 77, 7*,

-.057 -.->5 775 77- 7&, 7,, 7*- 75,

-.*>, -.->+ 7&: 7+, 75- 7:, 70, +7,

-.&*& -.-:: 70: 7,, +7- ++, +-- +5-

-.+*5 -.-:, +-* 7:, +,, +0, +&, &&-

-.7>0 -.-:+ +&- +7- &-- &-- +0, &:-

-.7,> -.-:+ +0, +&- &*+ &&, &-- *&-

-.7+5 -.-:+ +>, +0- &:, &:- &&, *>,-.->0, -.-5> &*- &-- *,- *&, &:, ,>-

-.-50> -.-5: &>- &&, ,7> *>- *&- 05-

-.-0-: -.-55 *,- &:- 0-, ,,- *:- 5:-

-.-*0: -.-50 ,-- *&- 5-- 07- ,&- >--

-.-&0+ -.-5, ,,, *:, :-> 0:- ,>- 7-+-

-.-+:& -.-5, 0+, ,&- >&, 5*- 0&- 77*-

-.-++, -.-0: 0>- ,5- 7-0, 5:- 00- 7+,-

J J J J J J J J

J J J J J J J J

7.,,, -.->5 &* +: &- ** &5 &>

7.,,& -.->5 *& &5 *- ,, *5 ,-

7.,,& -.-:, ,5 *: ,& 5* 07 05

7.,* -.-: 5: 07 5- >* 5: :,

-.>& -.-: >, :- >> 7+- 7-- 7+,

-.057 -.-: 770 >* 775 7*, 7+- 7,,

-.*>, -.-5: 7*- 77- 7*- 75- 7*, 7>-

-.&*& -.-55 75- 7*- 750 +7- 75, +&,

-.+*5 -.-5* +-- 70, ++7 +,- +7- +>-

-.7>0 -.-5+ ++, 7:, +,: +:, +*- &&-

-.7,> -.-5+ +,, +7- +>* &7, +5- &5,

-.7+5 -.-5+ +:, +&, &&> &,, &-- *&,

-.->0, -.-5+ &+, +5- *-+ *7- &,- ,7-

-.-50> -.-57 &5- &-, *07 *0- &>- ,>-

-.-0-+ -.-5 *&, &,- ,*+ ,+- **- 05-

-.-0-+ -.-5 *:7 *-, 0+* ,:- *:- 5,-


34/48

-.-0-+ -.-5 ,&5 *5- 5+& 0:- ,5, :5,

J J J J J J J J

J J J J J J J J

7.,:7 -.->5 &* +: &- ** &5 &>

7.,5 -.->5 *& &5 *- ,, *5 ,-

7.,, -.-: ,5 *: ,& 5* 07 05

7.,,5 -.-: 5: 07 5- >* 5: :,

-.>& -.-: >, :- >> 7+- 7-- 7+,

-.057 -.-: 770 >* 775 7*, 7+- 7,,-.*>, -.-5: 7*- 77- 7*- 75- 7*, 7>-

-.&*& -.-55 75- 7*- 750 +7- 75, +&,

-.+*5 -.-5* +-- 70, ++7 +,- +7- +>-

-.7>0 -.-5+ ++, 7:, +,: +:, +*- &&-

-.7,> -.-5+ +,, +7- +>* &7, +5- &5,

-.7+5 -.-5+ +:, +&, &&> &,, &-- *&,

-.->0, -.-5+ &+, +5- *-+ *7- &,- ,7-

-.-50> -.-57 &5- &-, *07 *0- &>- ,>-

-.-0-+ -.-5 *&, &,- ,*+ ,+- **- 05-

-.-0-+ -.-5 *:7 *-, 0+* ,:- *:- 5,-

-.-0-+ -.-5 ,&5 *5- 5+& 0:- ,5, :5,

J J J J J J J J

-.>& -.-: >, :- >> 7+- 7-- 7+,

-.057 -.-: 770 >* 775 7*, 7+- 7,,

-.-*>, -.-5: 7*- 77- 7*- 75- 7*, 7>-

-.&*& -.-55 75- 7*- 750 +7- 75, +&,

-.+*5 -.-5* +-- 70, ++7 +,- +7- +>-

-.7>0 -.-5+ ++, 7:, +,: +:, +*- &&-

-.7,> -.-5+ +,, +7- +>* &7, +5- &5,

-.7+5 -.-5+ +:, +&, &&> &,, &-- *&,

-.->0, -.-5+ &+, +5- *-+ *7- &,- ,7-

-.-50> -.-57 &5- &-, *07 *0- &>- ,>-

-.-0-+ -.-5 *&, &,- ,*+ ,+- **- 05-

-.-0-+ -.-5 *:7 *-, 0+* ,:- *:- 5,-

-.-0-+ -.-5 ,&5 *5- 5+& 0:- ,5, :5,

J J J J J J J J

J J J J J J J J

&.0> -.77 &* +: &- ** &5 &>

+.7> -.7 *& &5 *- ,, *5 ,-

7.&: -.->5 ,5 *: ,& 5* 07 05

7.*5 -.-: 5: 07 5- >* 5: :,

-.>& -.-: >, :- >> 7+- 7-- 7+,

-.057 -.-: 770 >* 775 7*, 7+- 7,,

-.*>, -.-5: 7*- 77- 7*- 75- 7*, 7>-

-.&*& -.-55 75- 7*- 750 +7- 75, +&,

-.+*5 -.-5* +-- 70, ++7 +,- +7- +>-

-.7>0 -.-5+ ++, 7:, +,: +:, +*- &&-

-.7,> -.-5+ +,, +7- +>* &7, +5- &5,

-.7+5 -.-5+ +:, +&, &&> &,, &-- *&,

-.->0, -.-5+ &+, +5- *-+ *7- &,- ,7--.-50> -.-57 &5- &-, *07 *0- &>- ,>-

-.-0-+ -.-5 *&, &,- ,*+ ,+- **- 05-

-.-0-+ -.-5 *:7 *-, 0+* ,:- *:- 5,-

-.-0-+ -.-5 ,&5 *5- 5+& 0:- ,5, :5,


35/48


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37/48

Correction Factor!8?round Ca*le ;ist8 (Dro

No of Circuit Nill ca#le ?ia -.7+,m -.+,m -.,m 7 +

7 7 7 7 7 7 7 7 7

+ -.5, -.: -.:, -.> -.> + -.:* -.:

& -.0, -.5 -.5, -.: -.:, & -.: -.50

* -.0 -.0 -.5 -.5, -.: * -.5: -.5*

, -.,, -.,, -.0, -.5 -.: , -.55 -.5&

0 -., -.,, -.0 -.5 -.: 0 -.5, -.57

5 -.5* -.0> (emp. ;erating 2actor8 : -.5& -.0>

T PVC T 7.-7

, *, -.> -.>* -.>5, -.>, 7 7

0 ,- -.: -.:: -.:5: -.> 7.+ -.>:

5 ,, -.0> -.:+ -.50: -.:, 7., -.>0

: 0- -.0+-.5* -.0,: -.:

No ofCa#le6Tray

e e


38/48


39/48

+* +,

1luminium Coer

-.&50 -.,5+

-.,0* -.:,:

-.>*- 7.*&-

7.,-* +.+::

+.&,- &.,5,

&.+>- ,.--,

*.5-- 5.7,-

0.,:- 7-.-7

:.>&- 7&.,>

77.+: 75.70

7*.7- +7.*,

75.&> +0.*0++.,0 &*.&+

+:.+- *+.>-

&5.0- ,5.+-

*5.-- 57.,-

,>.++ >-.->

5,.+- 77*.*-

>*.-- 7*&.--

J J

J J

-.&50 -.,5+

-.,0* -.:,:

-.>*- 7.*&-

7.,- +.+>

+.&, &.,:

&.+> ,.-7

*.5- 5.7,

0.,: 7-.-7

:.>& 7&.,>

77.+: 75.70

7*.7- +7.*,

75.&> +0.*0

++.,0 &*.&+

+:.+- *+.>-

&5.0- ,5.+-

*5.-- 57.,-

for 7Sec.duration in %. 1ms


40/48

,>.++ >-.->

J J

J J

-.&50 -.,5+

-.,0* -.:,:

-.>*- 7.*&-

7.,- +.+>

+.&, &.,:

&.+> ,.-7*.5- 5.7,

0.,: 7-.-7

:.>& 7&.,>

77.+: 75.70

7*.7- +7.*,

75.&> +0.*0

++.,0 &*.&+

+:.+- *+.>-

&5.0- ,5.+-

*5.-- 57.,-

,>.++ >-.->

J J

+.&, &.,:

&.+> ,.-7

*.5- 5.7,

0.,: 7-.-7

:.>& 7&.,>

77.+: 75.70

7*.7- +7.*,

75.&> +0.*0

++.,0 &*.&+

+:.+- *+.>-

&5.0- ,5.+-

*5.-- 57.,-

,>.++ >-.->

J J

J J

-.&50 -.,5+

-.,0* -.:,:

-.>*- 7.*&-

7.,- +.+>

+.&, &.,:

&.+> ,.-7

*.5- 5.7,

0.,: 7-.-7

:.>& 7&.,>

77.+: 75.70

7*.7- +7.*,

75.&> +0.*0

++.,0 &*.&++:.+- *+.>-

&5.0- ,5.+-

*5.-- 57.,-

,>.++ >-.->


41/48


42/48


43/48

uin' factor$22No of Tray

/ * 0 :

7 7 7 7

-.5: -.55 -.50 -.5,

-.5* -.5& -.5+ -.57

-.5+ -.57 -.5 -.0>

-.5 -.0> -.0: -.05

-.5 -.0: 0.6 -.00

-.05, -.00 -.00 -.0*

-.0: -.05 -.00 -.0*


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(6)short circuit calculation (14.1.14)

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