10
Chapter
10-1
Transformers and Shunt Regulators
Chapter Objectives
Chapter 10 provides general information about the 1391 Isolation
Transformer. In addition, shunt regulator information is also provided.
1391 Transformers
The 1391-DES must operate from an isolation transformer having a
three-phase, 230V AC output and a single-phase, 36V AC output.
Transformers supplied with the 1391-DES can provide power for up to four
drives. Standard three-phase input voltages for the 60 Hz units are
available. The kVA values specified are the continuous outputs of the units
in a 60
°
C ambient.
Important: The maximum rating that can be connected to the 1391-DES is
15 kVA.
Important: The 1391-DES drive uses a 36V AC transformer tap to
provide power to the Logic Control Board. It is recommended that a 1391
Isolation Transformer be used. Contact your local Allen-Bradley Sales
Representative if a transformer of a different type must be used. Refer to
Figure 10.1 and Appendix B for connection information.
60 Hz Transformers
Two 60 Hz transformers are available and have input ratings of:
1. 240/480V AC , three-phase
2. 208/230/460/575V AC, three-phase
50/60 Hz Transformers
The 50/60 Hz transformer that is available has an input rating of
240/380/415/480V AC, three-phase.
NEMA Type 1 Enclosure
Dimensions for the NEMA Type 1 enclosures are shown in Appendix A.
Important: The NEMA Type 1 enclosure is shipped as a kit for customer
assembly.
If other input voltages or special enclosures are required, consult your local
Allen-Bradley Sales Representative. Refer to Figure 10.1 for connection
information and Appendix A for dimensions.
Summary of Contents for 1391-DES Series
Page 2: ...User Manual 1391 DES Digital AC Servo Drive ...
Page 10: ...Chapter 1 Introduction 1 10 End of Chapter ...
Page 38: ...Chapter 5 Inputs Outputs and Switch Settings 5 8 End of Chapter ...
Page 85: ...Chapter 8 Start Up 8 16 End of Chapter ...
Page 89: ...Chapter 9 1326 AC Servomotors 9 4 End of Chapter ...
Page 107: ...Chapter 11 Troubleshooting 11 12 End of Chapter ...
Page 123: ...Appendix B Interconnect Drawings B 12 End of Appendix ...
Page 127: ...Appendix C Cable Information C 4 End of Appendix ...
Page 135: ...Appendix E Parameter Record E 8 End of Appendix ...
Page 136: ...Notes ...
Page 137: ...Notes ...
Page 138: ...Notes ...
Page 139: ...Notes ...
Page 140: ...Notes ...
Page 141: ...Notes ...
Page 142: ...Notes ...
Page 143: ...Notes ...
Page 144: ...Notes ...
Page 145: ...Notes ...
Page 148: ...IMC is a trademark of Allen Bradley Company Inc ...