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ABU NAKLAH SUPER D20

Line Parameter

Positive Sequence Z1= (2.016+j12.160) ohmZero Sequence Z0= (9.676+ j33.141) ohm

ine en!th = 39.0" #m

$% &'tio =1"001P% &'tio =220#v110*

Zone 1 Settin! =70

Zone 2 Settin! =130Zone 3 Settin! =200

,m- &'tio = $%P%=0.7"

Zone-1: ( ALL CALCULATION IN PRIMARY VALUES FOR RELAY SETTING

Positive Sequence &esist'nce in ohms = &1 Zone1 settin!

= 2.016 0.70

&1 = 1.4112

Positive Sequence &e'ct'nce in ohms = /1 Zone1 settin!

= 12.160 0.70/1 = ."12

Zero Sequence &esist'nce in ohms = &0 Zone1 settin!= 9.676 0.70

&0 = 6.773

Zero Sequence &e'ct'nce in ohms = /0 Zone1 settin!

= 33.141 0.70

/0 = 23.19

RFPP = 3X1 R1

&PP = 24.124ohms oo-

RFPE = 2 X1 + X0 [ ( 2 R1 + R0 ) / 3 ]

&P = 37.02ohms oo-

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NOTES : ( FOR TESTIN PURPOSE )

!) FOR TESTIN PURPOSE ALL THE "ALUES SHOULD BE IN SE#ONDAR$

"ALUES%

!) RFPP AND RFPE "ALUES SHOULD BE IN &' / *', AND SE#ONDAR$"ALUES %

!) PRI-AR$ "ALUE SHOUL BE -ULTIPL$ .ITH I-PEDAN#E RATIO FOR

ETTIN IN SE#ONDAR$ "ALUE%

I*,, 4& = 0%56 ( 787, #T/PT )

R1 PP = R1 P49 78, ! I* R4&

= 1.4112 0.7"

= 1.0"

X1 PP = X1 P49 78, ! I* R4&

= ."12 0.7"= 6.34

R0 PE = R0 P49 78, ! I* R4&

= 6.773 0.7"

R0 PE = 6%05;

X0 PE = X0 P49 78, ! I* R4&

= 23.19 0.7"

X0 PE = 15%3;