GE EX2100 - Page 68

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Chapter 4 Terminal Board I/O and Equipment Connections GEH-6632 EX2100 User’s Guide
EXTB G1 - Contactor Mode
5
2
J505
Control Cabinet
M1
Status
J8
J6
M2
Status
KDEP
J12M1
J12M2
P70VM1
P70VM2
P70Vdc
J515
J508
21
N125
P125
P70V
Status
Feedback
70V Ret
3
6
4
1
3
2
4
7
5
8
6
1
9
P125
N125
41 Trip Relays
not present on
G1 and G2 boards
41 Close
J9
Bkr
Ct
Bkr
Ct
Bkr.
Ct.
To EPBP
J17M2
To EPBP
J17M1
M1 De-Excit.
Status
M2 De-Excit.
Status
Self Firing
5
2
J8
M2 Firing
Command
M1 Firing
Command
3
1
6
4
DEPL
HS-
HS+
Auxiliary Cabinet
2
1
FDI
Generator
Field +
Generator
Field -
De-Excitation
EDEX
Converter Cabinet
7
8
7
8
1
2
1
2
4
3
3
4
A
B
A
B
P24V
P24V
N24
N24
N125
1
3
2
To
M1
To
M2
To
C
P24
COM
N24
P24
COM
N24
1
3
2
(Simplex version is G2)
Conduction
Sense Circuit
41A 41B
M1 M2
M2 C
CM1
Figure 4-7. DC Contactor Control and Wiring to De-Excitation Board