GE LPS-O, Instruction Manual

Page: 35 / 308

GE Power Management LPS-O Line Protection System 1-
21
1 PRODUCT DESCRIPTION 1.8 PROTECTION SCHEME DESCRIPTIONS
1
Figure 1–8: STEP DISTANCE LOGIC DIAGRAM
F A U L T D E T E C T O R
L I N E P I C K U P
8
1 0
( Z O N E 2 )
B
0
B = 0 . 2 - 3 . 0 S E C
T L 2 P
P H A S E
D I S T A N C E
R E M O T E
O P E N
P H A S E
D I S T A N C E
G R O U N D
B A C K U P
5 0 G
5 1 G
O V E R -
C U R R E N T
S U P E R V I S I O N
IT
I B
P H A S E
D I S T A N C E
P H A S E
D I S T A N C E
P H A S E
B A C K U P
5 0 P
O S B A L L
C
0
D
0
T L 4 P
T L 3 P
1 3
2 8
1 1
O S B
4
1 1
C = 0 . 4 - 6 S E C
D = 0 . 4 - 6 S E C
( Z O N E 4 )
O S B
O S B
( Z O N E 3 )
ZONE 4
ZONE 3
ZONE 1
ZONE 2
1 3
O S B
STP_DST3.VSD
O U T O F S T E P
B L O C K I N G L O G I C
O S B
S E T T #
1 6 0 1 - 1 6 0 7
( C N F T R P )
C O N F I G U R A B L E
T R I P B U S
(TRIP)
T R I P
B U S
4 4
7
7
6
S U P E R V I S E
Z O N E 4
F F B
S E T T # 7 0 5