GE Entelli-Switch 250 - Relay;Transformer (R;T Box) Schematics; Standard Transition R;T Box Schematic; Delayed; Closed Transition R;T Box Schematic

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28 GE Zenith Controls
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Entelli-Switch 250 Operation and Maintenance Manual (71R-2000)
Relay/Transformer (R/T Box) (cont’d)
20
21 22
31
30
GND
903
902
801
901
807
804
803
904
905
906
805
806
(BLANK)
(BLANK)
GROUND
CCE - COIL CONTROL RELAY (SOURCE 2)
CCN - COIL CONTROL RELAY (SOURCE 1)
COMMON
J5
24V
10V
11 V
XE1
24V
10V
11 V
10V
XN1
XN2
CCN
CCE
XN1 - SOURCE 1 CONTROL TRANSFORMER
XN2 - SOURCE 1 3 PHASE SENSING TRANSFORMER
XE1 - SOURCE 2 CONTROL TRANSFORMER
XE2 - SOURCE 2 3 PHASE SENSING TRANSFORMER
SINGLE PHASE SOURCE 2 SENSING
3-PHASE SOURCE 1 SENSING
SOURCE 1 CONTROL POWER
SOURCE 2 CONTROL POWER
800
900
SOURCE 2 24V OUTPUT
SOURCE 1 24V OUTPUT
(18)
(1)
3 PHASE SOURCE 2 SENSING
10V
XE2
32
907
Standard Transition R/T Box Schematic
GND
903
902
801
901
807
804
803
904
905
906
805
806
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
J5
24V
10V
11 V
XE1
24V
10V
11 V
10V
XN1
XN2
CCN
CCE
XN1 - SOURCE1 CONTROL TRANSFORMER
XN2 - SOURCE1 3 PHASE SENSING TRANSFORMER
XE1 - SOURCE 2 CONTROL TRANSFORMER
XE2 - SOURCE 2 3 PHASE SENSING TRANSFORMER
3 PHASE SOURCE 2 SENSING
SINGLE PHASE SOURCE 2 SENSING
3-PHASE SOURCE 1 SENSING
SOURCE 1 CONTROL POWER
SOURCE 2 CONTROL POWER
800
900
SOURCE 2 24V OUTPUT
SOURCE 1 24V OUTPUT
(18)
(1)
CCEO
CCNO
908
808
20
21
22
31
30
10V
XE2
32
907
Delayed / Closed Transition R/T Box Schematic
Figure 15
Figure 16
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