10 2 3 4 5 7 100 2 3 4 5 7 1000 2 3 4 5 7 10000 2 3 4 5 7

10 2 3 4 5 7 100 2 3 4 5 7 1000 2 3 4 5 7 10000 2 3 4 5 7CURRENT (A)

SECONDS

2

3457

10

20

30405070100

200

3004005007001000

2

345710

20

30405070100

200

3004005007001000

.01

.02

.03

.04

.05

.07.1

.2

.3

.4

.5

.71

.01

.02

.03

.04

.05

.07

.1

.2

.3

.4

.5

.71

TIME-CURRENT CURVES @ Voltage ByFor No.Comment Date

1

1. 2 CO-9 TD=0.500CTR=80 Pickup=5.A No inst. TP@5=0.1102sIa= 6931.3A (86.6 sec A) T= 0.05s

2

2. 1 CO-9 TD=4.000CTR=120 Pickup=4.A No inst. TP@5=0.9956sIa= 6930.6A (57.8 sec A) T= 0.46sFAULT DESCRIPTION:Close-In Fault on: 2 BUS2 41.6kV - 3 BUS3 41.6kV 1L 3LG