GE Zenith Controls ZBTS Operation And Maintenance Manual page 28

Controls Power Supply (CPS)
Standard Transition CPS Schematic
20
XN1
24V 10V 11V
JC
C.V.
SCR-N
801
JC
Delayed Transition CPS Schematic
20
XN1
24V 10V 11V
JC
JC
C.V.
C.V.
SCR-N
SCR-EO
JC
801
JC
808
26
ZBTS / ZBTSD Operation and Maintenance Manual (71R-4000A)
21 22
XN2
10V 24V
JC
C.V.
SCR-E
JC
21 22
XN2
10V 24V
JC
JC
C.V.
C.V.
SCR-E
SCR-NO
JC
JC
908
30 31 32
XN1 -
XN2 -
XE1 XE2 XE1 -
XE2 - SOURCE 2 3 PHASE SENSING TRANSFORMER
10V 11V
900
(18)
800
907
808
908
GND
901
801
902
903
904
803
804
807
806
805
906
905
30 31 32
XE1 XE2
10V 11V 10V
908
GND
901
(cont'd)
SOURCE 1 CONTROL TRANSFORMER
SOURCE 1 3 PHASE SENSING
TRANSFORMER
SOURCE 2 CONTROL TRANSFORMER
SOURCE 2 24V OUTPUT
SOURCE 1 24V OUTPUT
3 PHASE SOURCE 2
(BLANK)
(BLANK)
GROUND
C.V. SCR-E CONTROL VOLTAGE (SOURCE 2)
C.V. SCR-N CONTROL VOLTAGE (SOURCE 1)
COMMON
SINGLE PHASE SOURCE 2 SENSING
3-PHASE SOURCE 1 SENSING
SOURCE 1 CONTROL POWER
Figure 18
SOURCE 2 CONTROL POWER
(1)
J5
XN1 - SOURCE 1 CONTROL TRANSFORMER
XN2 - SOURCE 1 3 PHASE SENSING
TRANSFORMER
XE1 - SOURCE 2 CONTROL TRANSFORMER
XE2 - SOURCE 2 3 PHASE SENSING
TRANSFORMER
900
(18) SOURCE 2 24V OUTPUT
800
SOURCE 1 24V OUTPUT
907
3-PHASE SOURCE 2 SENSING
808
C.V. SCR-EO CONTROL VOLTAGE (OPEN SOURCE 2)
908
C.V. SCR-NO CONTROL VOLTAGE (OPEN SOURCE 1)
GROUND
901
C.V. SCR-E CONTROL VOLTAGE (SOURCE 2)
801
C.V. SCR-N CONTROL VOLTAGE (SOURCE 1)
902
COMMON
903
SINGLE PHASE SOURCE 2 SENSING
904
803
804
3-PHASE SOURCE 1 SENSING
807
806
SOURCE 1 CONTROL POWER
805
906
SOURCE 2 CONTROL POWER
905
(1)
J5
Figure 19
GE Zenith Controls
I