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L1
L2 L3
Fu se
Fu se
Fuse
CB
Fuse
Fuse
Fuse
B
A
C
N
G
Figure 12 - Voltage and Current Connection for Two (or Three) Transformer Delta
Bus and Four-wire Wye Generator System
Use of a third potential
transformer is optional. The
CGCM unit can be connected
in either open or closed delta.
Customer Supplied CT
Shorting Switch or Test
Block
Rockwell Automation Publication 1407-UM002B-EN-P - February 2019
Optional
Ground
VB us A
VBus B
VB us C
VB us N
TB 6
V Gen A
VGe n B
V Gen C
V Gen N
TB 5
To optional cross-current
reactive compensation loop.
ID (+) 1A
ID (+) 5A
ID (- )
I3 (+) 1 A
I3 (+) 5 A
I3 (- )
I2 (+) 1 A
I2 (+) 5 A
I2 (- )
I1 (+) 1 A
I1 (+) 5 A
I1 (- )
TB3
Cross-current CT input
not required for parallel
droop operation.
Installation
Chapter 2
27
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