Rockwell Automation Allen-Bradley 2094-BM01-S - Transformer Selection

Rockwell Automation Publication 2094-UM001D-EN-P - May 2010 25
Planning the Kinetix 6000 Drive System Installation Chapter 2
Transformer Selection
The IAM module does not require an isolation transformer for three-phase input
power. However, a transformer may be required to match the voltage
requirements of the controller to the available service.
To size a transformer for the main AC power inputs, refer to Circuit
Breaker/Fuse Specifications on page 187
and Transformer Specifications for
Control Power Input on page 188
.
Example: Sizing a transformer to the voltage requirements of a
2094-BC01-M01-S Integrated Axis Module:
2094-BC01-M01-S = 6 kW continuous x 1.5 = 9.0 KVA transformer
IMPORTANT
If using an autotransformer, make sure that the phase to neutral/ground
voltages do not exceed the input voltage ratings of the drive.
IMPORTANT
Use a form factor of 1.5 for three-phase power (where form factor is used
to compensate for transformer, drive module, and motor losses, and to
account for utilization in the intermittent operating area of the torque
speed curve).