GE Power Management
ALPS Advanced Line Protection System
1-15
1 PRODUCT DESCRIPTION
1.4 AUXILIARY PROTECTION FUNCTIONS
1
Figure 1–7: OSB R-X DIAGRAM
Figure 1–8: OSB LOGIC DIAGRAMS
MT (ZONE 2 / 3 / 4)
MOB
SWING IMPEDANCE
LOCUS
X
R
OSBRXDiag.CDR
*
50
* 30 ms. INITIAL PICKUP TIME
A D A P T I V E A F T E R F I R S T S L I P C Y C L E
TL1
O S B
202
202
A N Y C O O R D I N A T I N G Z O N E
( P H A S E O R G R O U N D )
A N Y M O B
O S B 3 P . V S D
*
50
M T
A - B
M O B
A - B
201
* 30 ms. INITIAL PICKUP TIME
A D A P T I V E A F T E R F I R S T S L I P C Y C L E
TL1
O S B
P H A S E A
O P E N
201
204
M T
B - C
M O B
B - C
202
P H A S E B
O P E N
202
205
M T
C - A
M O B
C - A
203
P H A S E C
O P E N
203
206
207
O S B 1 P . V S D
ALPS WITH SINGLE-PHASE TRIPPING:
ALPS WITH THREE-PHASE TRIPPING: