11kV CT Final

7/24/2019 11kV CT Final

1/22

1

TOP SHEET

7/24/2019 11kV CT Final

2/22

2

ADWEA Contract WED/TI/J/58/97 (Lot 1)

33 / 11k S!"STATIO#S I# AL AI# A$EA

A) %E#E$AL DATA & LEAD $ESISTA#CE CALC!LATIO#

1) GENERAL DATA

1) System Voltage, KV = 11kV

2) System Fault Level = 25.0 kA, 3 Sec.

2) LEAD $ESISTA#CE CALC!LATIO# (11')

The Lea !"om #T to "elay = 15 $ete"s

%&th a s&'e o! ( Smm. #a*le the Lea "es&sta+ce = (.1 -hmsKm

At 20o #

Fo" 15 mete"s o! ( s.mm ca*le at 20o # = 0.0/2 ohms

Teme"atu"e coe!!&c&e+t o! "es&sta+ce at 20 # 20) = 0.003/3

4es&sta+ce value at 5 # = 4 617 T2T1)8

= 0.09(2 -hms

3) "!$DE# O CA"LE LOOP

:&sta+ce !"om 11KV #T to co+t"ol a+el = 15$t".

#a*le &mea+ce to ; !"o) = 2 < 15 < (.11000 = 0.1393 -hm

e+ce, >u"e+ o! ca*le loo = ? 2< 4 = 12

7/24/2019 11kV CT Final

3/22

3

TPICAL SLD *or 11' Ca+,-/OHL D.tr.+0t.on---r

7/24/2019 11kV CT Final

4/22

A 11k OHL/Ca+,- *---r

Al&cat&o+ @ -ve"cu""e+t a+ a"th Fault B"otect&o+

4elay Tye $ake @ @ :#: (1(>, :#:12(A

$s Vatech 4ey"olle, CK

#T 4at&o @ (00001A

Ca,c0,at.on o* "0r-n at $at- C0rr-nt

1. :#: (1(> = 0.2 VA )

) #o+t"ol4elay Ba+el

2. :#: 12(A = 0.05 VA )

3. #a*l&+g Loo = 0.1( VA

Total = 0.3/ VA

Total Burden Required = 0.39 VA

DETAILS O CT PA$A4ETE$ O$ CO$E1

Details Required Recoended

#T 4at&o = (00001A (00001A

#lass o! Accu"acy = #L 5B20 #L 5B20

4ate >u"e+ = 0.3/ VA 10 VA

4ate sho"t t&me the"mal

#u""e+t ? th = 25 kA !o" 3 sec. 25 kA !o" 3 sec.

4ate co+t&+uous the"mal

#u""e+t = 120D 120D

Cor- 6 2

Al&cat&o+ @ ?+st"ume+tat&o+

4at&o @ (00001A

7/24/2019 11kV CT Final

5/22

5

#alculat&o+ o! >u"e+ at 4ate #u""e+t

1. Ammete"s = 2.0 VA

2. #u""e+t T"a+suce" = 0. VA

3. #a*l&+g loo = 0.1( VA

2.( VA

Total Burden Required !."# VA



#T 4at&o = (00001A (00001A

#lass o! Accu"acy = #L 1 #L 1

4ate >u"e+ = 2.( VA 10 VA




#u""e+t = 120D 120D

7/24/2019 11kV CT Final

6/22

TPICAL SLD *or A0Tran*or-r ---r

7/24/2019 11kV CT Final

7/22

7

" 11k A0.,.ar: tran*or-r *---r

#o"e ?


4elay Tye $ake @ @ :#: (1(>,


#T 4at&o @ 301A


1. :#: (1(> = 0.2 VA )) #o+t"ol4elay Ba+el

2. #a*l&+g Loo = 0.1( VA

Total = 0.3( VA

Total Burden Required = 0.3# VA



#T 4at&o = 301A 301A


4ate >u"e+ = 0.3( VA 5 VA

4ate sho"t t&me the"mal#u""e+t ? th = 25 kA !o" 3 sec. 25 kA !o" 3 sec.


#u""e+t = 120D 120D

7/24/2019 11kV CT Final

8/22

8

Cor- 6 2


4at&o @ 301A



2. #u""e+t T"a+suce" = 0. VA

3. #a*l&+g loo = 0.1( VA

2.( VA




#T 4at&o = 301A 301A


4ate >u"e+ = 2.( VA 10 VA



#u""e+t = 120D 120D

7/24/2019 11kV CT Final

9/22

9

TPICAL SLD *or 11' Ca;ac.tor "ank---r

7/24/2019 11kV CT Final

10/22

1u"e+ at 4ate #u""e+t


2. #u""e+t T"a+suce" = 3.0 VA

3. $VA" mete"= 2.0 VA

3. #a*l&+g loo = 0.1( VA

.1( VA

Total Burden Required #.$0! VA



#T 4at&o = 001A 001A


4ate >u"e+ = .1( VA 10 VA




#u""e+t = 120D 120D

7/24/2019 11kV CT Final

12/22

12

TPICAL SLD *or 11' "0 S-ct.on

7/24/2019 11kV CT Final

13/22

13

D 11k "0 S-ct.on

#o"e ?


4elay Tye $ake @ @ :#: (1(>,


#T 4at&o @ 1001A


1. :#: (1(> = 0.2 VA )

) #o+t"ol4elay Ba+el2. #a*l&+g Loo = 0.1( VA

Total = 0.3( VA




#T 4at&o = 1001A 1001A


4ate >u"e+ = 0.3( VA 10 VA



4ate co+t&+uous the"mal#u""e+t = 120D 120D

7/24/2019 11kV CT Final

14/22

1

Cor- 6 2


4at&o @ 1001A



2. #u""e+t T"a+suce" = 0. VA

3. #a*l&+g loo = 0.1( VA

2.( VA




#T 4at&o = 1001A 1001A


4ate >u"e+ = 2.( VA 10 VA




#u""e+t = 120D 120D

7/24/2019 11kV CT Final

15/22

15

TPICAL SLD *or 11' "0 Int-rconn-ctor

7/24/2019 11kV CT Final

16/22

1

E 11k "0 Int-rconn-ctor Pan-,

#o"e ?


4elay Tye $ake @ @ :#: (1(>,


#T 4at&o @ 1001A


1. :#: (1(> = 0.2 VA )

) #o+t"ol4elay Ba+el

2. #a*l&+g Loo = 0.1( VA

Total = 0.3( VA




#T 4at&o = 1001A 1001A


4ate >u"e+ = 0.3( VA 10 VA




#u""e+t = 120D 120D

7/24/2019 11kV CT Final

17/22

17

Cor- 6 2


4at&o @ 1001A



2. #u""e+t T"a+suce" = 0. VA

3. #a*l&+g loo = 0.1( VA

2.( VA




#T 4at&o = 1001A 1001A


4ate >u"e+ = 2.( VA 10 VA



#u""e+t = 120D 120D

Al&cat&o+ @ &gh ?mea+ce c&"culat&+g cu""e+t

:A:3, VAT# E 4ey"olle, +gla+

4at&o @ 1001A

#lass o! Accu"acy = #lass

7/24/2019 11kV CT Final

18/22

18

%alculation o& 'nee (oint Voltae V*

The "eu&"eme+t o! kee+ o&+t voltage shoul *e as e" S? (93

Vk = 2 ?!T 4#T7 2 4L)

%he"e,

?! = B"&ma"y Fault cu""e+t = 25 kA

T = 1100

4#T = Seco+a"y G&+&+g "es&sta+ce o! #T

at 5 #

= 12 -hms !o" 100A Assume)

4L = Lea >u"e+ = 0.0.9(2

Vk = 2 H 25000 H 1100 612 7 2 H 0.09(28

= 390.23 V

Vk "eu&"e = 390.23 V

.

DETAILS O CT PA$A4ETE$ O$ CO$E


#T 4at&o = 1001A 1001A

#lass o! Accu"acy = #L #L

#T Sec.4es&sta+ce at = 12 -hms. 12 -hms.

5 #4#T

K+ee Bo&+t VoltageVk) 390.23 V 00 V

$ag+et&s&+g #u""e+t ?mag)

At Vk2 10 mA 10 mA




#u""e+t = 120D 120D

7/24/2019 11kV CT Final

19/22

19

TPICAL SLD *or 11' "!S T

7/24/2019 11kV CT Final

20/22

2u"e+@ 100VA 50VA

Al&cat&o+@ $ete"&+g

2) 33k "0 PT

4at&o @ 33kV 110 V 110 V 3 3 3

#lass@ 13B 3B

>u"e+@ 100VA 50VA

Al&cat&o+@ :&". >acku a+ $ete"&+g

7/24/2019 11kV CT Final

21/22

21

Bage 21 to sheet !o" Summa"y

Bage 22 to 2( eHcel summa"y sheets.

7/24/2019 11kV CT Final

22/22

22

Pa=- 25 to 3 Cata,o=0- r-*-r-nc-

DCD r-,a:

DAD r-,a:A-t-r

Ca+,-

Documents

11kV CT Final