Rockwell Automation 6012DB PowerFlex Medium Voltage Variable Frequency Drive - Manual (Page 21)

Rockwell Automation Publication 6000-UM001B-EN-P - October 2014 21
Drive System Layout Chapter 2
For drives with fixed-mounted power modules, the U and W phase
interconnections to the isolation transformer secondary windings are on the
front of the isolation transformer and the connections to the V phase are on the
rear of the isolation transformer. The power cable connections to the power
modules are made at the factory. Therefore, the field power cable connections
need to be made at the isolation transformer secondary winding termination
points (see
6000-IN006_-EN-P ).
For drives with drawout power modules, all of the interconnections between the
isolation transformer secondary windings and the power modules are made in the
rear of the isolation transformer and the connection to the power modules are
also in the rear. The power cable connections to the isolation transformer
secondary winding termination point are made at the factory. Therefore, the field
power cable connections must be made at the power module input points (see
6000-IN006_-EN-P ).
Isolation Transformer Temperature Monitor
A discrete transformer temperature monitor is mounted on the LV door in the
isolation transformer cabinet. Three temperature sensors are embedded in the
isolation transformer. The monitor can be set to indicate an alarm condition or a
trip condition, dependent on the temperature detected.
Figure 12 - Isolation Transformer Temperature Monitor
A separate user manual from the manufacturer is included in the documentation
package.