GE ZTS Series - R;T Box Wiring Schematics

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Relay/Transformer (R/T Box) (cont’d)
Standard Transition R/T Box Schematic
30 31 32
20
21 22
XN1 - SOURCE 1 CONTROL TRANSFORMER
XN2 - SOURCE 1 3 PHASE SENSING TRANSFORMER
XE1 - SOURCE 2 CONTROL TRANSFORMER
XE2 - SOURCE 2 3 PHASE SENSING TRANSFORMER
SOURCE 2 24V OUTPUT
SOURCE 1 24V OUTPUT
3 PHASE SOURCE 2 SENSING
(BLANK)
(BLANK)
GROUND
CCE - COIL CONTROL RELAY (SOURCE 2)
CCN - COIL CONTROL RELAY (SOURCE 1)
COMMON
GND
903
902
801
901
807
804
803
904
905
906
805
806
J5
24V
10V
11 V
XE1
24V
10V
11 V
10V
XN1
XN2
CCN
CCE
800
900
(18)
(1)
10V
XE2
907
SINGLE PHASE SOURCE 2 SENSING
3-PHASE SOURCE 1 SENSING
SOURCE 1 CONTROL POWER
SOURCE 2 CONTROL POWER
Figure 15
Delayed Transition R/T Box Schematic
20
21
22
30
31
32
GND
903
902
801
901
807
804
803
904
905
906
805
806
J5
24V
10V
11 V
XE1
24V
10V
11 V
10V
XN1
XN2
CCN
CCE
800
900
(18)
(1)
CCEO
CCNO
908
808
10V
XE2
907
XN1 - SOURCE1 CONTROL TRANSFORMER
XN2 - SOURCE1 3 PHASE SENSING TRANSFORMER
XE1 - SOURCE 2 CONTROL TRANSFORMER
XE2 - SOURCE 2 3 PHASE SENSING TRANSFORMER
SOURCE 2 24V OUTPUT
SOURCE 1 24V OUTPUT
3 PHASE SOURCE 2 SENSING
CCEO - COIL CONTROL RELAY (OPEN SOURCE 2)
CCNO - COIL CONTROL RELAY (OPEN SOURCE 1)
GROUND
CCE - COIL CONTROL RELAY (SOURCE 2)
CCN - COIL CONTROL RELAY (SOURCE 1)
COMMON
SINGLE PHASE SOURCE 2 SENSING
3-PHASE SOURCE 1 SENSING
SOURCE 1 CONTROL POWER
SOURCE 2 CONTROL POWER
Figure 16
GE Zenith Controls
ZTS / ZTSD Operation and Maintenance Manual (71R-3000)
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