Rockwell Automation Publication 20Y-UM001F-EN-P - April 2017
165
Appendix
C
Application Notes
Sizing Guidelines
Use the following guidelines to size the AFE.
Basic Procedure to Size the AFE
1. Sum the DC Input current rating of the connected drives.
See the respective drive documentation specifications, or Drives in
Common Bus Configurations, publication
.
2. Multiply the total DC current by 0.9.
This step compensates for the boosted DC bus voltage that is provided
by the AFE.
3. Select the AFE with the DC current rating that meets or exceeds the
value calculated in
.
Examples:
Normal-duty (ND), 110%, 1 minute
Heavy-duty (HD), 150%, 1 minute
Topic
Page
DC Input Rating of Connected Drives
AFE
DC
Voltage
ND
Power
ND
Currents
ND Current
Sum x 0.9
ND Cont. DC
Output Amps
AC Input
Voltage
650V
5 x 60 Hp
1 x 30 Hp
5 x 84.5 = 422.5 A
1 x 85.8 A
457.5 A
520 A
480V
DC Input Rating of Connected Drives
AFE
DC
Voltage
HD
Power
HD
Currents
HD Current
Sum x 0.9
HD Cont. DC
Output Amps
AC Input
Voltage
650V
5 x 60 Hp
1 x 30 Hp
5 x 84.5 = 422.5 A
1 x 55.7 = 55.7 A
430.4 A
435 A
480V
Содержание Allen-Bradley PowerFlex 700AFE
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Страница 124: ...124 Rockwell Automation Publication 20Y UM001F EN P April 2017 Chapter 4 Programming and Parameters Notes ...
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Страница 164: ...164 Rockwell Automation Publication 20Y UM001F EN P April 2017 Appendix B HIM Overview Notes ...
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