EDR-5000
IM02602007E
The following table shows how breaker positions are validated based on 52a and 52b:
States of the Digital Inputs
Validated Breaker Positions
CinBkr52a-I
CinBkr52b-I
Pos CLOSE
Pos OPEN Pos Indeterm Pos Disturb
Breaker
State
0
0
0
0
1
(while a Moving
timer is running)
0
(while a Moving
timer is running)
0
Intermediate
1
1
0
0
1
(while a Moving
timer is running)
0
(while a Moving
timer is running)
0
Intermediate
0
1
0
1
0
0
1
OPEN
1
0
1
0
0
0
2
CLOSE
0
0
0
0
0
(Moving timer
elapsed)
1
(Moving timer
elapsed)
3
Disturbed
1
1
0
0
0
(Moving timer
elapsed)
1
(Moving timer
elapsed)
3
Disturbed
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