GE DGP Series Instruction Manual page 26

1.3 PROTECTION FEATURES
1
Stator Ground
Zone 1
Stator Ground
Zone 2 (1)
VP3 > 0.5V
V 1 > 30V
D I 1
(+)
G e n .
S E L B K D I 1
Off-Line
≤ 27TN PICKUP
V
N 3
G E N . O F F - L I N E
(+)
D I 1
≥ 25V
V
1
P O W E R < F O R P W R - L
P O W E R > F O R P W R - H
Neutral Overcurrent
(1)
Overexcitation
(Alarm)
Overexcitation
(Trip)
NOTES:
(1) Indicates an optinal function (includes associated logic). Refer to
DGP nomenclature selection guide for available functions in a
specific model.
(2) Each of the available protection functions can be configured to
operate any combination of the 8 output relays (4-Trip and 4-Alarm).
Figure 1–5: SIMPLE LOGIC DIAGRAM – 64G1, 64G2, 51GN, AND 24
1-
14
T L 4
A N D
S E L B K D I 1
O R
T L 6
T i m e
O R
Inst
(+)
T L 7
DGP Digital Generator Protection System
6 4 G 1
T L 5
6 4 G 2
T L 2 0 2 7 T N
A N D
(1)
5 1 G N
2 4 A
2 4 T
A N D
(On-Line)
D I 1
G e n .
Off-Line 2 4 T
A N D
(Off-Line)
C O N F I G U R A B L E
1 PRODUCT DESCRIPTION
TRIP A
O R
9 4 G
TRIP B
O R
9 4 G 1
TRIP C
O R
9 4 G 2
TRIP D
O R
9 4 G 3
A L A R M
O R
7 4 A
A L A R M
O R
7 4 B
A L A R M
O R
7 4 C
A L A R M
O R
7 4 D
LOGIC (2)
GE Power Management