16
0
14
-u
fTI
::0
�
z
12
(j)
-i
� 10
z
F
r
I
� 6
()
0
z
g
4
2
G E K-49861
---
SEC O N D
ZONE RELAY
AVERAGE TIME
I NCLUD I NG
OUTPUT
RELAY
REACH = 1 7 5 °/o
OF L I NE
100
M I LE L I N E
2 5
M I LE S O URGE
6 0 H ERTZ
R E LAY
0o
10
20 30
40
50
60
70
80
FAULT LOCATION AS
PERCE NT O F
L I
N E
L
E
N
GT
H
90
1 0 0
F i g u r e l OA
( 0 2 7 3A9 0 9 5 - 3 Sh . l ) Ave rage Ope r a t i ng T ime f o r Second
Zone Relay - 60 Her t z
0
-u
fTI
:u
1 6
14
� 1 2
z
Q
:::itO
�
fTI
Z B
�
r
r
(i) G
fTI
n
0
6
4
(f)
2
SECO N D ZONE R E LAY
AVERAGE T I M E I N CLUDING
OUTPUT R E L AY
REACH = 1 7 5 °/o OF L I NE
100
M I LE L I N E
2 5 M I L E S O U R C E
5 0 H E R T Z RELAY
10
20
30 40
60
70
80
90
100
FAU LT L OCAT I O N AS A PERCENT OF L I NE LENGTH
F i g u r e l O B
( 0 2 7 3A9 0 9 5 Sh . 2 ) Ave r ag e Ope r a t i ng T ime for Second
Zone r e l ay - 50 He r t z
43
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