Rockwell Automation 1407-CGCM Combination Generator Control Module - Manual (Page 78)

78 Rockwell Automation Publication 1407-UM001G-EN-P - April 2013
Chapter 4 CGCM Unit Configuration
• Generator VT Configuration - The generator VT configuration selections
are (1) single-phase, (2) two-transformer open delta, (3) three-wire wye,
and (4) four-wire wye. Use the two-transformer open delta setting for any
delta configuration. This parameter is stored in the tag GenVT_Config in
the configuration table.
• Generator VT Primary Voltage - The primary voltage rating of the
generator voltage transformer is stored in tag GenVT_Pri_V in the
configuration table.
• Generator VT Secondary Voltage - The secondary voltage rating of the
generator voltage transformer connected to V Gen A, V Gen B, and V Gen
C, (and V Gen N for wye configurations) of the CGCM unit. This
parameter is stored in tag GenVT_Sec_V in the configuration table.
• Bus VT Configuration - The bus VT configuration selections are (1)
single-phase, (2) two-transformer open delta, (3) three-wire wye, (4)
four-wire wye, and (5) dual breaker. This parameter is stored in the tag
BusVT_Config
in the configuration table. For applications that require
synchronizing to one of two busses, dual breaker must be selected.
• Bus A VT Primary Voltage - The primary voltage rating of the bus voltage
transformer is stored in tag BusA_VT_Pri_V in the configuration table.
• Bus A VT Secondary Voltage - The secondary voltage rating of the bus
voltage transformer connected to V Bus A, V Bus B, and V Bus C (and V
Gen N for wye configurations) of the CGCM unit. This parameter is
stored in tag BusA_VT_Sec_V in the configuration table.
• Bus B VT Primary Voltage - The primary voltage rating of the second bus
voltage transformer when dual breaker bus VT configuration is selected.
This parameter is stored in tag BusB_VT_Pri_V in the configuration
table.
• Bus B VT Secondary Voltage - The secondary voltage rating of the second
bus voltage transformer connected to V Bus B, and V Bus N of the CGCM
unit. This parameter is stored in tag BusB_VT_Sec_V in the
configuration table.
The Bus B VT settings are used only by the CGCM unit if the Bus VT
configuration selection is dual breaker.
• Generator CT Primary Current - Is the primary current rating of the
generator current transformers. This parameter is stored in tag
GenCT_Pri_I
in the configuration table.
• Generator CT Secondary Current - The secondary current rating of the
generator current transformers connected to the CGCM unit’s terminals
I1, I2, and I3. This parameter is stored in tag GenCT_Sec_I in the
configuration table.
• Cross Current CT Primary Current - The primary current rating of the
cross current generator current transformer. This parameter is stored in tag
CCCT_Pri_I
in the configuration table. It is used for monitoring
generator reactive current in paralleling applications.